CN104431851A - Longan product rich in fructo-oligose and preparation method thereof - Google Patents
Longan product rich in fructo-oligose and preparation method thereof Download PDFInfo
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- CN104431851A CN104431851A CN201410750479.0A CN201410750479A CN104431851A CN 104431851 A CN104431851 A CN 104431851A CN 201410750479 A CN201410750479 A CN 201410750479A CN 104431851 A CN104431851 A CN 104431851A
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- longan
- fos
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- fruit juice
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- ZUFQODAHGAHPFQ-UHFFFAOYSA-N pyridoxine hydrochloride Chemical compound Cl.CC1=NC=C(CO)C(CO)=C1O ZUFQODAHGAHPFQ-UHFFFAOYSA-N 0.000 description 1
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- UFTFJSFQGQCHQW-UHFFFAOYSA-N triformin Chemical compound O=COCC(OC=O)COC=O UFTFJSFQGQCHQW-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L19/00—Products from fruits or vegetables; Preparation or treatment thereof
- A23L19/09—Mashed or comminuted products, e.g. pulp, purée, sauce, or products made therefrom, e.g. snacks
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L29/00—Foods or foodstuffs containing additives; Preparation or treatment thereof
- A23L29/06—Enzymes
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L33/00—Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23V—INDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
- A23V2002/00—Food compositions, function of food ingredients or processes for food or foodstuffs
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Nutrition Science (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Microbiology (AREA)
- Mycology (AREA)
- Coloring Foods And Improving Nutritive Qualities (AREA)
Abstract
The invention discloses a longan product rich in fructo-oligose and a preparation method thereof. The method comprises the following steps: pre-treating longans to obtain longan fruit juice, concentrating after heating and passivating enzyme treatment, and then using compound pectinase and glucose oxidase for conversion reaction so as to obtain fructo-oligose longan fruit juice; sterilizing and passivating enzyme activity by adopting an ultra-high-temperature instantaneous sterilizing manner and quickly cooling to room temperature; and sterilely filling to obtain the longan product rich in fructo-oligose. The longan product rich in fructo-oligose disclosed by the invention can be used for effectively retaining flavor and nutritional components in longans and meanwhile has an excellent health function of fructo-oligose. The product further contains other nutritional components of longans such as mineral elements: amino acids, potassium, phosphorus, calcium and vitamins and can be used as a base material of a longan functional food.
Description
Technical field
The invention belongs to food processing field.More specifically, a kind of longan goods being rich in FOS and preparation method thereof are related to.
Background technology
Longan, also known as " longan ", is China's south subtropics famous and expensive special local product, has the title of " southern longan, Radix Ginseng " in history.Longan fruit is rich in nutrition, is loved by the people, and is more regarded as precious tonic, and the nourishing function had is road alleged by people always.For the nutritive value of longan, the understanding of ancients can be found out from the description of Shennong's Herbal.Formerly to write: " take for a long time strong soul, clever, keep fit old, being proficient in the law of natural movement.An intelligence development ".
Longan pulp contains sugar, protein and the multiple nutritional labelings such as rope of supporting one's family.Its sugar content is very high, the total sugar content of each kind is 10.0% ~ 17.4%, soluble sugar mainly exists with the form of sucrose, glucose and fructose, especially the content of sucrose is high, if " Chu Liang " longan is to accumulate sucrose, its sucrose mass percentage reaches more than 10%, is fructose and glucose content 2 ~ 3 times respectively.
But from another aspect, because longan contains too high sugar, eat and too much easily get fat, do not meet the health standards of modern, and diabetes patient can not eat longan, easily causes blood glucose fluctuation.Be that the product of raw material mostly is and directly utilizes arillus longan or dried longan to prepare, as longan fruit juice, longan oral liquid etc. in the market with longan; Also have and use longan and other material mixed products, as various longan tea, longan beverage and longan health food.But these products do not solve the problem.
Research shows, FOS, as a kind of not digested new-type sweetener, meets the health diet custom of modern especially, is applicable to the patients suffering from the inedibility sugar such as diabetes.
FOS (FOS, Fructooligosaccharides) FOS is had another name called, its molecular structure is the oligosaccharides general name in conjunction with 1 ~ 3 fructose molecule on sucrose molecule, it forms mainly ketose (GF2), Nystose (GF3) and GF4 (GF4), it is the general name of the ketose, Nystose, GF4, sugarcane fruit six sugar and composition thereof that sucrose molecule is formed in conjunction with several D-Fructose with β-1,2 glycosidic bond.FOS sweet taste comparatively sucrose is low, and general purity is the sugariness of the FOS of 50% ~ 60% is 60% of sucrose, and purity is the sugariness of the FOS of 90% is 30% of sucrose, and sweet taste is salubrious, clean taste.FOS is within the scope of 0 ~ 70 DEG C, and viscosity is similar to isomerized sugar, rises and decline with temperature, still very stable 120 DEG C time in neutral environment, but pH value be 3, more than temperature 70 C time, FOS just easily decomposes.The water activity of FOS is suitable with sucrose, and FOS also has the advantages such as good dissolubility, non-staining, plastic property, alkali resistance, ageing resistance in addition.
FOS is that one is not digested, direct arrival large intestine, the probio proliferant agents such as Bifidobacterium are bred rapidly in enteron aisle, therefore also known as Oilgosaccharkdes, long-term taking can reduce the quantity of serum cholesterol, triglyceride, free fatty, improve lipid-metabolism, a series of angiocardiopathies such as the hypertension caused because blood fat is high, artery sclerosis are had a better role.FOS is generated Pfansteihl by bacterial fermentation in large intestine, can the mineral matter such as dissolving calcium, magnesium, iron, promotes that human body is to the absorption of mineral matter.Experiment confirms, FOS promotes that the absorptivity of calcium reaches 70.8%.Therefore, FOS can enhancing development, prevents osteoporosis.Also can promote the self-assembling formation of vitamin B1, B2, B3, B6, B12 and folic acid simultaneously, thus improve human metabolism's level, improve immunity and premunition.Prevention and improve the skin diseases that causes due to body endogenous toxic material, can prevent face sore, blackspot, freckle, whelk, age mark, makes that skin is beautiful, aging to be slowed down.After Bifidobacterium in body absorbs FOS; rapid propagation; the spoilage organisms such as Escherichia coli, salmonella and clostruidium are suppressed to be had an effect; reduce the generation of toxic metabolites (as indoles, nitroso ammonia); simultaneously rapid toxic metabolites to be excreted; alleviate burden of liver, play liver-protective effect, prevent the effects such as various chronic disease, cancer obviously.According to surveying and determination, the calorific value of FOS is below 1.5Kcal/g, and sucrose calorific value is 4.6Kcal/g, and after therefore taking in FOS, can not cause obesity, be desirable low heat value functional sweetener.FOS can not be utilized generation insoluble glucan by streptococcus mutans and provide oral microorganism to deposit the place (tartar) of producing acid and corroding, and therefore can prevent carious tooth.
In addition, confirm through the experiment of animal and human's body, FOS has good physiological function, after human body takes in FOS, bifidobacterium fermentation FOS produces SCFA and some antibiotic, the breeding of intrinsic putrefactivebacteria in external source pathogenic bacteria and intestines can be suppressed, reduce the generation of poisonous tunning and the propagation of harmful bacteria.FOS is a kind of excellent water-soluble dietary fiber, can promote small bowel peristalsis, accelerates degraded and the eliminating of putrefaction in enteron aisle; There is relaxing bowel, improve the effect of ight soil proterties, prevention and alleviate constipation and reduction serum cholesterol and blood fat.The health care excellent due to FOS and special physiologically active, it is as a kind of internationally recognized typical prebiotics representative, its edible safety has obtained the confirmation of government in many countries, as FDA (USFDA) has approved that FOS is the food ingredient of public security level.Canada, Australia, New Zealand, Israel also ratify to use, and allow to indicate on food labelling have the effect of Bifidobacterium expanding capacity.The FOS of nineteen ninety-five Japanese health ministry official approval Meiji Seika Kaisba company is health food, in Taiwan, also FOS is used as food ingredient.European Union's approved its be food ingredients.International market is the food kind of preparing burden comprises Yoghourt, dairy products, baby food, cake candy, biscuit, the pouring of ice fine jade, jelly, jam, fast food oatmeal, soup stock, energy stick and allotment milk powder, soymilk, tea beverage, coffee, solid beverage etc. with FOS.
The raw material preparing FOS is at present mainly sucrose, and such as, application number is in the patent application of 96106345.9, discloses a kind of preparation method of FOS, and it take sucrose as raw material; Application number is in the patent application of 200710021605.9, discloses a kind of production method of high-purity fructo oligosaccharides, and it adopts sucrose to be raw material, produces through industrialization enzymatic conversion method; Application number is that to disclose a kind of take blackstrap as the method that FOS prepared by raw material to 201310030780.X; Application number be 201310239424.9 and 201310026429.3 to patent discloses with sugar-cane juice be the method that FOS prepared by raw material.Directly use sucrose or blackstrap to be prepared in these technology, maybe need the sugaring through sucrose processing and the refining explained hereafter waiting complexity.FOS is as a kind of food additives, and production cost is high, and prior art prepares FOS because removing the nutritional labeling of nearly all non-sucrose in process as amino acid, organic acid, minerals and vitamins etc., causes the serious waste of nutrition.
FOS goods main be in the market all with industrial FOS product for additive, directly add in each based article, there are no with fruit (comprising longan) for the relevant report of FOS goods and preparation technology thereof directly prepared by raw material.
Summary of the invention
Technical problem to be solved by this invention overcomes the technical deficiency that in prior art, longan fabricated product exists, there is provided a kind of simple, effectively can reduce the cane sugar content in longan goods and retain local flavor and the nutritional labeling of longan, be rich in the preparation method of the longan goods of the excellent health care of FOS simultaneously.
The object of this invention is to provide a kind of longan goods being rich in FOS.
The preparation method of the longan goods of FOS is rich in described in another object of the present invention is to provide.
Above-mentioned purpose of the present invention is achieved through the following technical solutions:
The invention provides a kind of preparation method being rich in the longan goods of FOS, step is as follows:
S1. the longan fruit of fresh and healthy is chosen; Through cleaning, shelling, stoning of pulling an oar, squeezing, filtration obtain longan fruit juice;
S2. longan fruit juice is carried out adding the process of thermally inactivating enzyme activity, specifically longan fruit juice is heated to 75 ~ 85 DEG C in 2 ~ 5min, after keeping 3 ~ 5min, is cooled to room temperature rapidly;
S3. by the longan concentration of juices after the process of inactive enzyme activity, in the longan fruit juice after concentrated, add compound pulp enzyme and glucose oxidase, conversion reaction is carried out to longan fruit juice; Wherein, the total amount of compound pulp enzyme and glucose oxidase and the mass volume ratio of longan fruit juice are 1:1000 ~ 1:5000; The condition of described conversion reaction is under natural pH condition, 40 ~ 60 DEG C of reaction 8 ~ 18h;
S4. ultra high temperature short time sterilization inactive enzyme is active, and sterile filling, obtains the longan goods being rich in FOS.
Select as one, compound pulp enzyme described in S3 can be the pulp enzyme Pectinex Ultra SP-L(9500PG/mL of Novozymes Company); Glucose oxidase is the Gluzyme Mono 10000BG(10000GODU/g of Novozymes Company).
Alternatively, cleaning described in S1 can be adopt to soak sprinkling equipment clean surface dirt, microorganism and remains of pesticide etc.
Shell described in S1 and stainless pucellas or pincers can be adopted to pack into pedestrian's work shell.
Pulling an oar stoning described in S1 can after peeling be shelled, and collects pulp and is transported to pit-removed machine and carries out de-core, also the longan pulp beater after shelling can be isolated fruit stone and pulp; Fruit stone percentage of damage is less than 2%.
Preferably, when longan pulp pumps into beater, carry out sub-sieve with 0.5mm screen cloth.
Squeezing described in S1 uses belt press to carry out squeeze and filter.
The aperture of filtering described in S1 is 0.3 ~ 1mm.As a kind of scheme, some the larger particles in fruit juice can be separated by the screen cloth of belt filter press.
Preferably, recycle high-speed and continuous centrifugation apparatus after filtration to carry out being separated essence filter.
Preferably, the mass volume ratio of the compound pulp enzyme described in step S3 and the total amount of glucose oxidase and longan fruit juice is 1:2500.
Preferably, described in step S3, the mass ratio of compound pulp enzyme and glucose oxidase is 5:1 ~ 10:1.
Preferably, the condition of ultra high temperature short time sterilization described in step S4 is 130 ~ 132 DEG C, sterilizing 5 ~ 10s; Be more preferably sterilizing 5 ~ 8s.
Simmer down to Vacuum Concentration described in step S1, the condition of Vacuum Concentration is vacuum-0.08 ~-0.1Mpa, temperature 60 ~ 70 DEG C; Being concentrated into soluble solid content is 20 ~ 60Brix.
Preferably, the temperature of Vacuum Concentration is 55 ~ 65 DEG C.
The longan goods being rich in FOS prepared according to above-mentioned preparation method are also in protection scope of the present invention.In described longan goods, FOS accounts for 15% ~ 45% of soluble solid total amount.Described longan goods can be processed into a kind of the longan inspissated juice or the fruit powder product that are rich in FOS further, also can be used as the base-material of longan functional food.
The goods being rich in FOS main be in the market all with industrial FOS product for additive, directly add in each based article, there are no with fruit (comprising longan) for the report of the goods being rich in FOS directly prepared by raw material.Directly prepare by fruit the goods being rich in FOS also to need to overcome a series of technical barrier, on the one hand, even the fruit that sugar content is very high, its sugar content prepares for industry the concentration that FOS needs substrate, or on the low side; On the other hand, the complicated component of fruit, except containing except sugar, also containing a large amount of other materials all kinds of and the unknown factor.Comprising some bioenzyme activity inhibiting substances, as the carrying out along with conversion reaction, concentration of glucose improves, and can suppress the further accumulation of FOS.The sugared content of general fruit is based on reduced sugar, and glucose sugar content is higher.The present invention utilizes glucose oxidase by glucose oxidase, can eliminate the adverse effect to conversion reaction.
Because longan pulp contains sugar, protein and the multiple nutritional labelings such as rope of supporting one's family, its sugar content is very high relative to other fruit, the total sugar content of each kind is 10.0% ~ 17.4%, soluble sugar is mainly with sucrose, the form of glucose and fructose exists, especially the content of sucrose is high, if " Chu Liang " longan is to accumulate sucrose, its sucrose mass percentage reaches more than 10%, 2 ~ 3 times of fructose and glucose content respectively, the good substrates of FOS enzymatic conversion method reaction comparatively speaking, therefore the present inventor selects longan to be raw material, through long-term exploration and large quantity research, overcome a series of technical problem one by one, sum up a kind of method with longan being directly raw material preparation and being rich in FOS goods, and optimize preparation technology, the method technique is simple, easy enforcement, concentration of soluble solids 20 ~ the 60Brix being rich in the longan goods of FOS prepared, the mass percentage of FOS accounts for 15% ~ 45% of soluble solid, that (described soluble solid is the conventional technical parameter of food service industry one for more than 6 times of general longan converted products, refer to all general names being dissolved in the compound of water in liquid or fluid food, comprise sugar, acid, vitamin, mineral matter etc.).The described longan goods being rich in FOS of stating not only are rich in functional FOS, and by the endogenous sucrose inversion of longan self, more green safety; These goods also retains other nutritional labeling of longan simultaneously, as mineral matter element and vitamins such as amino acid, potassium, phosphorus, calcium; In addition, these goods also can be used as base-material or the additive of longan functional food, make various health-related food with other material mixtures.
The present invention has following beneficial effect:
The invention provides a kind of longan goods being rich in FOS and preparation method thereof, described method technique simply, is easily implemented, and is directly that raw material prepares a kind of longan goods being rich in FOS by compound pulp enzyme and glucose oxidase with longan.The described concentration of soluble solids 20 ~ 60Brix being rich in the longan goods of FOS, the mass percentage of FOS accounts for 15% ~ 45% of soluble solid, is more than 6 times of general longan converted products.The described longan goods being rich in FOS of stating not only are rich in functional FOS, and by the endogenous sucrose inversion of longan self, more green safety; These goods also retains local flavor and other the nutritional labeling of longan simultaneously, as mineral matter element and vitamins such as amino acid, potassium, phosphorus, calcium.
Simultaneously, prepared by the present invention is rich in the longan goods of FOS, a large amount of sugar is converted into FOS, FOS is that one is not digested, direct arrival large intestine, breeds the probio proliferant agents such as Bifidobacterium rapidly, also has much good physiological function in enteron aisle, more meet the health standards of modern, be also applicable to the patients suffering from the inedibility sugar such as diabetes.
In addition, the present invention is that the method that FOS goods prepared by raw material has also enriched the preparation technology of FOS with longan, the method overcome the preparation of existing FOS complicated with process for refining process, the technical deficiencies such as cost energy consumption is large, in addition, also overcome prior art prepare in FOS process remove nearly all non-sucrose nutritional labeling as amino acid, organic acid, minerals and vitamins etc., cause the defect that nutrition is wasted, the present invention directly utilizes pretreated longan, FOS is prepared through compound pulp enzyme and glucose oxidase conversion, nutrition and the local flavor of longan is maintained to greatest extent in preparation process, improve the nutritive value of product, there is excellent health care, these goods can be used as base-material or the FOS additive of longan functional food, various health-related food is made with other material mixtures.
Detailed description of the invention
Further illustrate the present invention below in conjunction with specific embodiment, but embodiment does not limit in any form to the present invention.Unless stated otherwise, the present invention adopts reagent, method and apparatus are the art conventional reagent, method and apparatus.
Unless stated otherwise, the raw material that following examples are used and chemical reagent are commercial.
embodiment 1
1, the present embodiment is with commercial longan for the longan goods being rich in FOS prepared by raw material, and step is as follows:
S1. raw material is selected: choose 100kg fresh mature, full free from insect pests, undamaged longan fruit.
S2 pretreatment:
S21. clean: adopt and soak sprinkling equipment cleaning removing shell surface contaminants, microorganism and remains of pesticide etc.;
S22. shell: adopt stainless pucellas or pincers cover manually to shell;
S23. to pull an oar stoning: collect band nacucum 80kg, be transported to pit-removed machine and carry out de-core, collect longan pulp, longan pulp is pumped into beater, carries out sub-sieve with 0.5mm screen cloth;
S24. squeeze: cross belt press squeeze and filter;
S25. filter: by some the larger particles in the mesh size size separation fruit juice of belt filter press, adopt high-speed and continuous centrifugation apparatus to carry out being separated essence filter, obtain longan fruit juice 50kg, total dissoluble solid content is 20Brix, cane sugar content 10%;
S3. thermally inactivating enzyme process is added: the process of thermally inactivating enzyme activity is added to the longan fruit juice obtained; Longan fruit juice is heated to 75 DEG C at rapid (in 2 ~ 5min), after keeping 5min, is then cooled to room temperature rapidly.
S4. enzymatic conversion: use compound pulp enzyme Pectinex Ultra SP-L and glucose oxidase to carry out conversion reaction to longan fruit juice, wherein, the total amount of compound pulp enzyme and glucose oxidase and the mass volume ratio of longan fruit juice are 1:5000; The mass ratio of compound pulp enzyme and glucose oxidase is 10:1; Conversion condition be nature pH condition, 45 DEG C, reaction 8h; Conversion process makes longan rob change into FOS slurry.
S5. sterilization inactive enzyme is active: adopt ultra high temperature short time sterilization, sterilising temp is 130 ~ 132 DEG C, and sterilization time is 5s; Be cooled to room temperature rapidly.
S6. sterile filling: carry out filling in clean environment, namely obtains the longan goods being rich in FOS.
2, through the display of GB/T12143-2008 and GBT 23528-2009 detection method result, the concentration of soluble solids of longan goods prepared by the present embodiment is 20Brix, FOS accounts for 15% of soluble solid.
Meanwhile, a large amount of sense of taste, vision, olfactory sensations show, and the longan goods color, smell and taste of prepared by the present embodiment be rich in FOS are all good, effectively remain local flavor and the nutritional labeling of longan, have the excellent health care of FOS simultaneously.
embodiment 2
1, the present embodiment is with commercial longan for the longan goods being rich in FOS prepared by raw material, and step is as follows:
S1. raw material is selected: choose 500kg fresh mature, full free from insect pests, undamaged longan fruit.
S2 pretreatment:
S21. clean: adopt and soak sprinkling equipment cleaning removing shell surface contaminants, microorganism and remains of pesticide etc.;
S22. shell: adopt stainless pucellas or pincers cover manually to shell;
S23. to pull an oar stoning: collect band nacucum 400kg, isolate fruit stone and pulp through beater, fruit stone be avoided broken, percentage of damage requires to be less than 2%, collects longan pulp, carries out sub-sieve with 0.5mm screen cloth;
S24. squeeze: cross belt press squeeze and filter;
S25. filter: by some the larger particles in the mesh size size separation fruit juice of belt filter press, adopt high-speed and continuous centrifugation apparatus to carry out being separated essence filter, obtain longan fruit juice 250kg, total dissoluble solid content is 20Brix, cane sugar content 10%;
S3. thermally inactivating enzyme process is added: the process of thermally inactivating enzyme activity is added to the longan fruit juice obtained; Longan fruit juice is heated to 80 DEG C at rapid (in 2 ~ 5min), after keeping 4min, is then cooled to room temperature rapidly.
S4. Vacuum Concentration: adopt Vacuum Concentration longan fruit juice, at vacuum-0.08 Mpa, under temperature 60 C condition, obtain concentrated longan fruit juice 125kg, wherein soluble solid content is 40Brix.
S5. enzymatic conversion: use compound pulp enzyme Pectinex Ultra SP-L and glucose oxidase to carry out conversion reaction to longan fruit juice, wherein, the total amount of compound pulp enzyme Pectinex Ultra SP-L and glucose oxidase and the mass volume ratio of longan fruit juice are 1:2500; The mass ratio of compound pulp enzyme Pectinex Ultra SP-L and glucose oxidase is 8:1; Conversion condition be nature pH condition, 50 DEG C, reaction 10h; Conversion process makes longan rob change into FOS slurry.
S6. sterilization inactive enzyme is active: adopt ultra high temperature short time sterilization, sterilising temp is 130 ~ 132 DEG C, and sterilization time is 5s; Be cooled to room temperature rapidly.
S7. sterile filling: carry out filling in clean environment, namely obtains the longan goods being rich in FOS.
2, through the display of GB/T12143-2008 and GBT 23528-2009 method testing result, the concentration of soluble solids of longan goods prepared by the present embodiment is 40Brix, FOS accounts for 30% of soluble solid.
Meanwhile, a large amount of sense of taste, vision, olfactory sensations show, and the longan goods color, smell and taste of prepared by the present embodiment be rich in FOS are all good, effectively remain local flavor and the nutritional labeling of longan, have the excellent health care of FOS simultaneously.
embodiment 3
1, the present embodiment is with commercial longan for the longan goods being rich in FOS prepared by raw material, and step is as follows:
S1. raw material is selected: choose 1000kg fresh mature, full free from insect pests, undamaged longan fruit.
S2 pretreatment:
S21. clean: adopt and soak sprinkling equipment cleaning removing shell surface contaminants, microorganism and remains of pesticide etc.;
S22. shell: adopt stainless pucellas or pincers cover manually to shell;
S23. to pull an oar stoning: collect band nacucum 800kg, isolate fruit stone and pulp through beater, fruit stone be avoided broken, percentage of damage requires to be less than 2%, collects longan pulp, carries out sub-sieve with 0.5mm screen cloth;
S24. squeeze: cross belt press squeeze and filter;
S25. filter: by some the larger particles in the mesh size size separation fruit juice of belt filter press, adopt high-speed and continuous centrifugation apparatus to carry out being separated essence filter, obtain longan fruit juice 500kg, total dissoluble solid content is 20Brix, cane sugar content 10%;
S3. thermally inactivating enzyme process is added: the process of thermally inactivating enzyme activity is added to the longan fruit juice obtained; Longan fruit juice is heated to 85 DEG C at rapid (in 2 ~ 5min), after keeping 3min, is then cooled to room temperature rapidly.
S4. Vacuum Concentration: adopt Vacuum Concentration longan fruit juice, at vacuum-0.1 Mpa, under temperature 70 C condition, obtain concentrated longan fruit juice 165kg, wherein soluble solid content is 60Brix.
S5. enzymatic conversion: use compound pulp enzyme Pectinex Ultra SP-L and glucose oxidase to carry out conversion reaction to longan fruit juice, wherein, the total amount of compound pulp enzyme Pectinex Ultra SP-L and glucose oxidase and the mass volume ratio of longan fruit juice are 1:1000; The mass ratio of compound pulp enzyme Pectinex Ultra SP-L and glucose oxidase is 5:1; Conversion condition be nature pH condition, 55 DEG C, reaction 18h; Conversion process makes longan rob change into FOS slurry.
S6. sterilization inactive enzyme is active: adopt ultra high temperature short time sterilization, sterilising temp is 130 ~ 132 DEG C, and sterilization time is 5s; Be cooled to room temperature rapidly.
S7. sterile filling: carry out filling in clean environment, namely obtains the longan goods being rich in FOS.
2, through the display of GB/T12143-2008 and GBT 23528-2009 method testing result, the concentration of soluble solids of longan goods prepared by the present embodiment is 60Brix, FOS accounts for 45% of soluble solid.
Meanwhile, a large amount of sense of taste, vision, olfactory sensations show, and the longan goods color, smell and taste of prepared by the present embodiment be rich in FOS are all good, effectively remain local flavor and the nutritional labeling of longan, have the excellent health care of FOS simultaneously.
embodiment 4
1, the present embodiment is with commercial longan for the longan goods being rich in FOS prepared by raw material, and step is as follows:
S1. raw material is selected: choose 1000kg fresh mature, full free from insect pests, undamaged longan fruit.
S2 pretreatment:
S21. clean: adopt and soak sprinkling equipment cleaning removing shell surface contaminants, microorganism and remains of pesticide etc.;
S22. shell: adopt stainless pucellas or pincers cover manually to shell;
S23. to pull an oar stoning: collect band nacucum 800kg, isolate fruit stone and pulp through beater, fruit stone be avoided broken, percentage of damage requires to be less than 2%, collects longan pulp, carries out sub-sieve with 0.5mm screen cloth;
S24. squeeze: cross belt press squeeze and filter;
S25. filter: by some the larger particles in the mesh size size separation fruit juice of belt filter press, adopt high-speed and continuous centrifugation apparatus to carry out being separated essence filter, obtain longan fruit juice 500kg, total dissoluble solid content is 20Brix, cane sugar content 10%;
S3. thermally inactivating enzyme process is added: the process of thermally inactivating enzyme activity is added to the longan fruit juice obtained; Longan fruit juice is heated to 85 DEG C at rapid (in 2 ~ 5min), after keeping 4min, is then cooled to room temperature rapidly.
S4. Vacuum Concentration: adopt Vacuum Concentration longan fruit juice, at vacuum-0.1 Mpa, under temperature 60 C condition, obtain concentrated longan fruit juice 180kg, wherein soluble solid content is 55Brix.
S5. enzymatic conversion: use compound pulp enzyme Pectinex Ultra SP-L and glucose oxidase to carry out conversion reaction to longan fruit juice, wherein, the total amount of compound pulp enzyme Pectinex Ultra SP-L and glucose oxidase and the mass volume ratio of longan fruit juice are 1:1500; The mass ratio of compound pulp enzyme Pectinex Ultra SP-L and glucose oxidase is 5:1; Conversion condition be nature pH condition, 40 DEG C, reaction 9h; Conversion process makes longan rob change into FOS slurry.
S6. sterilization inactive enzyme is active: adopt ultra high temperature short time sterilization, sterilising temp is 130 ~ 132 DEG C, and sterilization time is 10s; Be cooled to room temperature rapidly.
S7. sterile filling: carry out filling in clean environment, namely obtains the longan goods being rich in FOS.
2, through the display of GB/T12143-2008 and GBT 23528-2009 method testing result, the concentration of soluble solids of longan goods prepared by the present embodiment is 55Brix, FOS accounts for 40% of soluble solid.
Meanwhile, a large amount of sense of taste, vision, olfactory sensations show, and the longan goods color, smell and taste of prepared by the present embodiment be rich in FOS are all good, effectively remain local flavor and the nutritional labeling of longan, have the excellent health care of FOS simultaneously.
embodiment 5
1, the present embodiment is with commercial longan for the longan goods being rich in FOS prepared by raw material, and step is as follows:
S1. raw material is selected: choose 1000kg fresh mature, full free from insect pests, undamaged longan fruit.
S2 pretreatment:
S21. clean: adopt and soak sprinkling equipment cleaning removing shell surface contaminants, microorganism and remains of pesticide etc.;
S22. shell: adopt stainless pucellas or pincers cover manually to shell;
S23. to pull an oar stoning: collect band nacucum 800kg, isolate fruit stone and pulp through beater, fruit stone be avoided broken, percentage of damage requires to be less than 2%, collects longan pulp, carries out sub-sieve with 0.5mm screen cloth;
S24. squeeze: cross belt press squeeze and filter;
S25. filter: by some the larger particles in the mesh size size separation fruit juice of belt filter press, adopt high-speed and continuous centrifugation apparatus to carry out being separated essence filter, obtain longan fruit juice 520kg, total dissoluble solid content is 20Brix, cane sugar content 10%;
S3. thermally inactivating enzyme process is added: the process of thermally inactivating enzyme activity is added to the longan fruit juice obtained; Longan fruit juice is heated to rapidly 75 DEG C, after keeping 5min, is then cooled to room temperature rapidly.
S4. Vacuum Concentration: adopt Vacuum Concentration longan fruit juice, at vacuum-0.09 Mpa, under temperature 65 DEG C of conditions, obtain concentrated longan fruit juice 170kg, wherein soluble solid content is 58Brix.
S5. enzymatic conversion: use compound pulp enzyme Pectinex Ultra SP-L and glucose oxidase to carry out conversion reaction to longan fruit juice, wherein, the total amount of compound pulp enzyme Pectinex Ultra SP-L and glucose oxidase and the mass volume ratio of longan fruit juice are 1:1200; The mass ratio of compound pulp enzyme Pectinex Ultra SP-L and glucose oxidase is 5:1; Conversion condition be nature pH condition, 55 DEG C, reaction 15h; Conversion process makes longan rob change into FOS slurry.
S6. sterilization inactive enzyme is active: adopt ultra high temperature short time sterilization, sterilising temp is 130 ~ 132 DEG C, and sterilization time is 8s; Be cooled to room temperature rapidly.
S7. sterile filling: carry out filling in clean environment, namely obtains the longan goods being rich in FOS.
2, through the display of GB/T12143-2008 and GBT 23528-2009 method testing result, the concentration of soluble solids of longan goods prepared by the present embodiment is 58Brix, FOS accounts for 40% of soluble solid.
Meanwhile, a large amount of sense of taste, vision, olfactory sensations show, and the longan goods color, smell and taste of prepared by the present embodiment be rich in FOS are all good, effectively remain local flavor and the nutritional labeling of longan, have the excellent health care of FOS simultaneously.
embodiment 6
1, the present embodiment is with commercial longan for the longan goods being rich in FOS prepared by raw material, and step is as follows:
S1. raw material is selected: choose 1000kg fresh mature, full free from insect pests, undamaged longan fruit.
S2 pretreatment:
S21. clean: adopt and soak sprinkling equipment cleaning removing shell surface contaminants, microorganism and remains of pesticide etc.;
S22. shell: adopt stainless pucellas or pincers cover manually to shell;
S23. to pull an oar stoning: collect band nacucum 750kg, isolate fruit stone and pulp through beater, fruit stone be avoided broken, percentage of damage requires to be less than 2%, collects longan pulp, carries out sub-sieve with 0.5mm screen cloth;
S24. squeeze: cross belt press squeeze and filter;
S25. filter: by some the larger particles in the mesh size size separation fruit juice of belt filter press, adopt high-speed and continuous centrifugation apparatus to carry out being separated essence filter, obtain longan fruit juice 500kg, total dissoluble solid content is 20Brix, cane sugar content 10%;
S3. thermally inactivating enzyme process is added: the process of thermally inactivating enzyme activity is added to the longan fruit juice obtained; Longan fruit juice is heated to 85 DEG C at rapid (in 2 ~ 5min), after keeping 3min, is then cooled to room temperature rapidly.
S4. Vacuum Concentration: adopt Vacuum Concentration longan fruit juice, at vacuum-0.08Mpa, under temperature 60 C condition, obtain concentrated longan fruit juice 200kg, wherein soluble solid content is 50Brix.
S5. enzymatic conversion: use compound pulp enzyme Pectinex Ultra SP-L and glucose oxidase to carry out conversion reaction to longan fruit juice, wherein, the total amount of compound pulp enzyme Pectinex Ultra SP-L and glucose oxidase and the mass volume ratio of longan fruit juice are 1:2000; The mass ratio of compound pulp enzyme Pectinex Ultra SP-L and glucose oxidase is 5:1; Conversion condition be nature pH condition, 50 DEG C, reaction 12h; Conversion process makes longan rob change into FOS slurry.
S6. sterilization inactive enzyme is active: adopt ultra high temperature short time sterilization, sterilising temp is 130 ~ 132 DEG C, and sterilization time is 6s; Be cooled to room temperature rapidly.
S7. sterile filling: carry out filling in clean environment, namely obtains the longan goods being rich in FOS.
2, through the display of GB/T12143-2008 and GBT 23528-2009 method testing result, the concentration of soluble solids of longan goods prepared by the present embodiment is 50Brix, FOS accounts for 45% of soluble solid.
Meanwhile, a large amount of sense of taste, vision, olfactory sensations show, and the longan goods color, smell and taste of prepared by the present embodiment be rich in FOS are all good, effectively remain local flavor and the nutritional labeling of longan, have the excellent health care of FOS simultaneously.
embodiment 7 storage life is tested
The concentration of soluble solids that Example 1-6 obtains is 20 ~ 60Brix, FOS accounts for 15% ~ 40% of soluble solid, through the aseptic cooling of instantaneous sterilization filling in the longan goods of vial.Longan goods prepared by the present invention do not add any anticorrisive agent, and in stored at room temperature 6 months, the concentration of soluble solids of goods and FOS accounted for the constant rate of soluble solid.
In sum, the present invention directly utilizes pretreated longan, be rich in the process of longan goods of FOS through compound pulp enzyme and glucose oxidase conversion preparation, effectively inhibit because concentration of glucose increases impact sucrose inversion being become to FOS, the longan goods prepared are without the need to adding any anticorrisive agent, and storage life is the longest reaches half a year for it.And preparation technology of the present invention simply, easily implements, in preparation process, decrease the cane sugar content in goods, maintain nutrition and the local flavor of longan to greatest extent, improve the nutritive value of product, there is the excellent health care of FOS simultaneously, there is very large application value.
Claims (10)
1. be rich in a preparation method for the longan goods of FOS, it is characterized in that, comprise the steps:
S1. the longan fruit of fresh and healthy is chosen; Through cleaning, shelling, stoning of pulling an oar, squeezing, filtration obtain longan fruit juice;
S2. longan fruit juice is heated to 75 ~ 85 DEG C in 2 ~ 5min, after keeping 3 ~ 5min, is cooled to room temperature rapidly;
S3. by the longan concentration of juices after step S2 process, in the longan fruit juice after concentrated, add compound pulp enzyme and glucose oxidase, conversion reaction is carried out to longan fruit juice;
S4. ultra high temperature short time sterilization inactive enzyme is active, and sterile filling, obtains the longan goods being rich in FOS.
2. be rich in the preparation method of the longan goods of FOS according to claim 1, it is characterized in that, the total amount of compound pulp enzyme and glucose oxidase described in step S3 and the mass volume ratio of longan fruit juice are 1:1000 ~ 1:5000; The mass ratio of described compound pulp enzyme and glucose oxidase is 5:1 ~ 10:1.
3. be rich in the preparation method of the longan goods of FOS according to claim 1, it is characterized in that, the total amount of compound pulp enzyme and glucose oxidase described in step S3 and the mass volume ratio of longan fruit juice are 1:2500.
4. be rich in the preparation method of the longan goods of FOS according to claim 1, it is characterized in that, the condition of conversion reaction described in step S3 is under natural pH condition, 40 ~ 60 DEG C of reaction 8 ~ 18h.
5. be rich in the preparation method of the longan goods of FOS according to claim 1, it is characterized in that, pull an oar described in step S2 stoning time, fruit stone percentage of damage is less than 2%.
6. be rich in the preparation method of the longan goods of FOS according to claim 1, it is characterized in that, the condition of ultra high temperature short time sterilization described in step S4 is 130 ~ 132 DEG C, sterilizing 5 ~ 10s.
7. be rich in the preparation method of the longan goods of FOS according to claim 1, it is characterized in that, the aperture of filtering described in step S1 is 0.3 ~ 1mm.
8. be rich in the preparation method of the longan goods of FOS according to claim 1, it is characterized in that, simmer down to Vacuum Concentration described in step S3, the condition of Vacuum Concentration is vacuum-0.08 ~-0.1Mpa, temperature 60 ~ 70 DEG C; Being concentrated into soluble solid content is 20 ~ 60Brix.
9. the longan goods being rich in FOS prepared by method described in claim 1.
10. be rich in the longan goods of FOS according to claim 9, it is characterized in that, in longan goods, FOS accounts for 15% ~ 45% of soluble solid total amount.
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