CN103397111A - Preparation method of granulated crystal sugar - Google Patents
Preparation method of granulated crystal sugar Download PDFInfo
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- CN103397111A CN103397111A CN2013102905884A CN201310290588A CN103397111A CN 103397111 A CN103397111 A CN 103397111A CN 2013102905884 A CN2013102905884 A CN 2013102905884A CN 201310290588 A CN201310290588 A CN 201310290588A CN 103397111 A CN103397111 A CN 103397111A
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Abstract
The invention relates to a preparation method of granulated crystal sugar. The method comprises the steps of raw material pre-treatment, crystallization, mixing, drying, screening and the like. The preparation method has the beneficial effects that the production flow of the existing process is shortened; the production equipment investment is reduced by about 30%; the production cost is reduced by about 40%; the product yield is improved above 85% from about 50%; the crystallization time is shortened to about 40 hours from 80-100 hours; less crystallization mother liquor needs cyclic treatment; high fructose syrup with poorer quality is not produced; the color, sweetness, taste and solubility of the obtained product reach or exceed the related indexes of sucrose; and the granulated crystal sugar does not absorb moisture and is not molten or agglomerated below 50 DEG C under the condition of proper packaging, can completely or partially replace sucrose and is widely applied in the food industry.
Description
[technical field]
The invention belongs to the β-amylose processing technique field.More specifically, the present invention relates to a kind of preparation method of sand shape crystallised sugar.
[background technology]
Sucrose is one of basic foodstuff additive of the mankind, the history of existing several thousand.Sugar take sucrose as main component is divided into again from high to low according to purity: rock sugar, white sugar, cotton white sugar and brown sugar (Saccharum Sinensis Roxb.) (also claiming brown sugar or brown sugar), normally used white sugar, brown sugar are all sucrose.Sucrose is decomposed into fructose and glucose through Digestive system in digestion, through intestinal absorption.
Sweet taste in food not only can increase local flavor and the mouthfeel of food, and generally believes that sweet food can make people's spiritual happiness, along with the raising of living standards of the people, the demand of sweeting agent is improved year by year.Sugarcane is as squeezing one of main raw material of sucrose, reason due to factors such as weathers, cultivated area at China's Guangxi province is the widest, but because this area has a large population in a small area, and mostly be mountain region, terrace cropping, all smaller by enlarging cultivated area and adopting the means such as mechanized cultivation to improve the possibility of output, and the factor impact such as output climate has larger fluctuation, and, along with the increase of the factors such as cost of labor, make the production cost of sucrose significantly improve since 2009.
In recent years, development along with new and high technologies such as zymotechnic, membrane technique, chromatographic techniques, the β-amylose industry is all being greatly developed in countries in the world, corn, crack rice, the raw material of the rich in starch such as cassava all is used to produce in a large number β-amylose, the output cumulative year after year of all kinds of β-amyloses, increasing Application Areas all starts to adopt β-amylose to replace sucrose to use, and in the maximum U.S. of pre-capita consumption sugar, the total amount of the β-amylose of annual consumption has surpassed the consumption of sucrose.since entering after human body, sucrose finally also to resolve into the utilization that is absorbed by the body of sucrose and fructose, if with to sucrose in glucose and fructose form similar ratio, by glucose and the composite use of fructose, as similar to the sugariness of the sucrose of same concentration as the F42 high fructose syrup, the solubleness of fructose is the highest in carbohydrate, dissolution rate is also very fast, before the sweet taste peak value appears at other composition local flavor peak values, so zestful not masking property of its tool, but also has the effect that strengthens other local flavors, not only can reach and use sucrose identical even better mouthfeel and local flavor, and sucrose decomposition course in vivo can discharge a large amount of heats, directly use above-mentioned composite sugar more favourable for the human consumer of needs control body weight.
Yet at present the composite product of glucose and fructose all is in a liquid state, and as F42 and F55 syrup, these syrup will use barreled, can not push or pile high, occupies larger space, and is very inconvenient when storing and transport; In use, because viscosity is larger, take inconvenience, and easily cause and use the sanitary condition in zone poor; When temperature was low, syrup also there will be precipitation, the impact that these inconveniences are serious the use of liquid sugar sirup, and almost can only use as the intermediate raw material of food-processing, can not be as end product directly for the human consumer.If liquid sugar sirup can be obtained to sand shape crystallised sugar by methods such as crystallization, dryings, its storage, transportation and the accessibility of using improve greatly, cost also will reduce greatly, and relative sucrose, its raw material sources is extensive, be not subjected to the impact of amblent air temperature, can produce in a large number the whole year, and production cost reduces greatly.Product not only can be used as the food intermediate raw material and uses in a large number, even can enter family with the small packages form, the ideal product that becomes substituting saccharose or be used in conjunction with sucrose.
But because glucose and fructose are all reducing sugars, so thermostability is poor than sucrose, be heated for a long time caramelization can occur, and can with a small amount of protein generation Maillard reaction in syrup, the color and luster that affect product reacts.And the method that adopts low-temperature vacuum drying in enormous quantities with relative low value-added product for, production cost is too high.And the dry fructose that obtains belongs to metamict, and water absorbability is very strong, in drying process, will all form molten state, and the very strong agglomerate of cooling rear formation water absorbability stores and uses all very inconvenient.Therefore, at present the course of processing of glucose and fructose is all to adopt crystallization processes, and one avoids syrup to be subjected to high temperature action, and two come the product water absorbability of the crystalline structure that crystallization forms less, are convenient to prolonged preservation and use.
at present, continuous progressive separating and purifying technology, and crystallization spraying, vacuum cooling, the appearance of the methods such as organic solvent dissolved, all comparative maturity is stable to have made a lot of highly purified monose crystallization processes and product, but the research to high fructose syrup from crystallizing technique, be showed no disclosed bibliographical information both at home and abroad, this be mainly because the solubleness of fructose much larger than glucose (during as 25 ℃, the solubleness of fructose is about 4 times of glucose), after high fructose syrup is concentrated, at first glucose reach hypersaturated state crystallization, and fructose unsaturation still, in precipitate, fructose content is very low.If syrup concentration is too high, its viscosity is too large, and mobility reduces greatly, can affect solute molecule and directly interact, and after whole feed liquid is cooling, can form glassy state, and not have crystal to separate out, and this product water absorbability is strong, is heated a little and namely presents molten state.
At present domestic also have producer to propose to use respectively high-purity glucose and fructose crystallization, then crystalline dextrose and crystal diabetin are mixed into to finished product by a certain percentage.Such method is in order to obtain highly purified crystal diabetin, first will be by high fructose syrup through chromatographic separation, obtain highly purified fructose syrups (general fructose content is more than 96%) and highly purified glucose syrup (general glucose content is more than 85%), but fructose syrups condensing crystal, obtain highly purified crystal diabetin and a large amount of mother liquors, glucose syrup is isomerization again again, and the gained syrup mixes with the mother liquor after the fructose crystallization, concentrates, through chromatographic separation, process again, so circulation.But the thermolability due to fructose; after it is heated for a long time; polymerization and color reaction can occur; therefore this process is after 3 circulations; consider the protection chromatographic fractionation system, the gained feed liquid just is not suitable for again circulating, and just can only sell this feed liquid this moment as syrup; and due to long heat effect, the indexs such as the color of this syrup and mouthfeel are all poor.Usually the crystallisation process of this process is at 80～100h, and the product yield only has an appointment 50%, and therefore this method facility investment is large, and the production cycle is long, and the product yield is low, and production cost is high.And two kinds of decomposite methods of the other crystallization of sugar, the outward appearances such as the color of two kinds of crystallised sugar products of requirement, granular size, transparency, crystal formation should be tried one's best unanimously, to guarantee the above-mentioned external appearance characteristic stable homogeneous of mixing prod, this has increased by two kinds of difficulty that sugared crystallization effect is controlled undoubtedly greatly.Therefore the present invention is intended to find out a kind of method that overcomes the problems referred to above.
[summary of the invention]
[technical problem that will solve]
The preparation method who the purpose of this invention is to provide a kind of sand shape crystallised sugar.
[technical scheme]
The present invention is achieved through the following technical solutions.
The present invention relates to a kind of preparation method of sand shape crystallised sugar.
Described preparation method's step is as follows:
A, raw materials pretreatment
Adopt concentration method that the dry substance concentration of high fructose syrup is brought up to concentrated high fructose syrup weighing scale 85%～90%, then put into crystallizer tank, be cooled to below 60 ℃;
B, crystallization
In the cold concentrated high fructose syrup that obtains toward steps A, add dry biomass 4～6% crystallised sugars of usining in described concentrated high fructose syrup as crystal seed, then stir; Again its feed liquid is cooled to 13～15 ℃ of temperature according to 3～4 ℃/h of speed; Then under the condition of 15～20 ℃ of temperature and stirring, be incubated 28～32h;
C, batch mixing
In mixing tank, allow the feed liquid that step B obtains mix according to weight ratio 1:0.8～1.2 with described crystallised sugar, obtain a kind of compound;
The D drying
Compound that step C obtains adopts flash drying equipment to carry out drying and dehydrating 130～150 ℃ of temperature, until its water-content is with the dried feed weighing scale below 4%; Then screening obtains described sand shape crystallised sugar.
A preferred embodiment of the invention, the DE value of described high fructose syrup is more than 96.
According to another kind of preferred implementation of the present invention, in steps A, described concentration method is to use the vacuum drum scraper drier to carry out concentration time 80～100s at 80～85 ℃ of temperature.
According to another kind of preferred implementation of the present invention, in steps A, described cooling be that to use plate-type heat exchanger to carry out heat exchange cooling.
According to another kind of preferred implementation of the present invention, in step B, described crystallised sugar crystal seed is comprised of according to weight ratio glucose and fructose at 58: 42.
According to another kind of preferred implementation of the present invention, in step B, the time that described feed liquid is lowered the temperature according to described speed is 8～12h.
According to another kind of preferred implementation of the present invention, in step C, the feed liquid that step B obtains uses high-speed mixer to mix with described crystallised sugar.
According to another kind of preferred implementation of the present invention, the inlet temperature of described flash drying equipment is 135 ℃, and air outlet temperature is 45 ℃.
Below the present invention will be described in more detail.
The present invention relates to a kind of preparation method of sand shape crystallised sugar.Described preparation method's step is as follows:
A, raw materials pretreatment
Adopt concentration method that the dry substance concentration of high fructose syrup is brought up to concentrated high fructose syrup weighing scale 85%～90%, then put into crystallizer tank, be cooled to below temperature 60 C;
The raw material that the inventive method is used is high fructose syrup, and high fructose syrup is the β-amylose crystalline substance of being made by plant amylum hydrolysis and isomerization, has peculiar flavour, is a kind of important sweeting agent.Its composition is mainly fructose and glucose.
The high fructose syrup that the present invention uses is product sold, for example Shandong Xiwang Sugar Co., Ltd, Shandong Luzhou Biological Science & Tech. Co., Ltd., Wuhan City Jin Dege sugar industry company limited product sold in the market.
Because the high fructose syrup concentration of selling in the market is generally in high fructose syrup gross weight 70%～76%, use this high fructose syrup not reach the reasons such as hypersaturated state due to glucose and fructose, so just can use after must concentrating.
In this step, the method that described high fructose syrup concentrates is to use the vacuum drum scraper drier to carry out concentration time 80～100s at 80～85 ℃ of temperature.
Described vacuum drum scraper drier is product sold in the market, for example the imperial drying plant of Changzhou person of outstanding talent company limited, the positive drying plant of Changzhou product company limited, the dry Engineering Co., Ltd of Jiangsu pioneer product sold.
Preferably, described high fructose syrup carries out concentration time 85～95s at 82～84 ℃ of temperature.
In the present invention, the DE value of described high fructose syrup is preferably more than 96.0.The DE value representation accounts for the per-cent of described syrup dry-matter with the reducing sugar of glucose meter.The measuring method of DE value is specifically referring to standard GB/T20885-2007.
In this step, described cooling be that to use plate-type heat exchanger to carry out heat exchange cooling.
Described plate-type heat exchanger is extensive product sold in the market, and for example the good strong machinofacture in Changzhou company limited, Changzhou Rong Zhen drying plant company limited, Changzhou are contained lattice interchanger company limited product sold.
B, crystallization
In the cold concentrated high fructose syrup that obtains toward steps A, add dry biomass 4～6% crystallised sugars of usining in described concentrated high fructose syrup as crystal seed, then stir; Again its feed liquid is cooled to 13～15 ℃ of temperature according to 3～4 ℃/h of speed; Then under the condition of 15～20 ℃ of temperature and stirring, be incubated 28～32h.
In this step, add the purpose of crystal seed to be in its crystallisation process, to form nucleus by adding insoluble additive crystal seed, in order to accelerate or promote the Fast Growth of its crystallisate.
In the present invention, described crystallised sugar crystal seed is comprised of according to weight ratio glucose and fructose at 58: 42.
In the present invention, described crystallization mode is to allow the concentrated high fructose syrup slurries that contain crystal seed be cooled to 13～15 ℃ of temperature with certain speed, makes its concentrated high fructose syrup slurries form gradually supersaturated solution.Described cooling rate is 3～4 ℃/h, if cooling rate during higher than 4 ℃/h, can be formed oarse-grained random crystal; If cooling rate during lower than 3 ℃/h, can extend crystallization time; Therefore, described cooling rate is that 3～4 ℃/h is suitable.In addition, when the temperature of its concentrated high fructose syrup slurries is reduced to lower than 13 ℃ of temperature, can cause material viscosity too large, poor fluidity, affect mass transfer; The temperature of its concentrated high fructose syrup slurries is reduced to when temperature is more than 15 ℃, can extend crystallization time.The time that described concentrated high fructose syrup feed liquid is lowered the temperature according to described speed is 8～12h.
Therefore, in process of cooling, need temperature and the temperature fall time strictly controlling cooling rate, lower the temperature and reach.
After cooling, need its concentrated high fructose syrup hydraulic control, built in 15～20 ℃ of temperature, under the condition of its temperature and stirring, to be incubated 28～32h.The effect of its insulation is to allow the crystallised sugar nucleus grow up gradually.
The holding temperature of its concentrated high fructose syrup slurries and time are all to need strict control after cooling, if its holding temperature and time surpass above-mentioned scope, can crystallization be unfavorable for too soon forming required regular crystal, make too slowly crystallization time oversize.
In the present invention, the mode of described insulation is circulating water heat insulation (regulating circulating water temperature according to room temperature).
C, batch mixing
In mixing tank, allow the feed liquid that step B obtains mix according to weight ratio 1:0.8～1.2 with described crystallised sugar, obtain a kind of compound;
In the present invention, the feed liquid that obtains of step B uses high-speed mixer to mix with described crystallised sugar.
Described high-speed mixer is a kind ofly by high-speed stirring, to make slurry and the uniform equipment of dry powder blend, the high-speed mixer that the present invention uses is product sold in the market, for example jump mechanical company limited, the Zhangjagang City mechanical company limited of grand base product sold of the triumphant mechanical company limited in Zhangjagang City ten thousand, Zhangjagang City tiger.
The D drying
Compound that step C obtains adopts flash drying equipment to carry out drying and dehydrating 130～150 ℃ of temperature, until its water-content is with the dried feed weighing scale below 4%; Then screening obtains described sand shape crystallised sugar.
Described flash drying equipment is a kind of equipment of quick flow drying.The inlet temperature of the flash drying equipment that the present invention uses is controlled at 135 ℃, air outlet temperature is controlled at 45 ℃, the flash drying equipment that the present invention uses is product sold, for example Jianda Drying Equipment Co., Ltd., Changzhou, the dry Engineering Co., Ltd of Jiangsu pioneer, the dry Engineering Co., Ltd of Changzhou power horse product sold in the market.
The water-content of described sand shape crystallised sugar is to adopt direct drying method to measure, specifically can be referring to standard GB5009.3-2010.
Dry sand shape crystallised sugar uses normally used screening plant in the art to sieve, and collects 15～25 purpose products, and sieve top is divided after crushed and divided with lower part of screen the crystal seed that is mixed for production method of the present invention.The product that obtains carries out packaging seal as early as possible under the condition of controlling packing humidity.
Method of the present invention has following characteristics:
I, with crystallization process respectively, compare, the present invention does not need syrup is carried out to separation and purification crystallization respectively again, facility investment is about 30% of difference crystallization processes, production cost is about 40% of crystallization respectively, the yield of product is by approximately 50% having brought up to more than 85%, and crystallization time has shortened to about 40h by 80～100h, has greatly shortened Production Flow Chart and cycle, reduced equipment investment cost and production cost, the operation easier of crystallization processes also reduces greatly;
II, with crystallization process respectively, compare, the present invention adopts method pre-crystallized and that flash drying combines to produce sand shape crystallised sugar, the yield of product is by approximately 50% having brought up to more than 85%, and do not have mother liquor to need iterative cycles to process, also can not produce the high fructose syrup of inferior quality, greatly improve raw material availability and quality product;
III, the product that obtains from directly adopting different dewaterings (as spraying drying, roller drying etc.) that high fructose syrup is dewatered are compared, products obtained therefrom of the present invention is owing to having adopted pre-crystallized technique, with siccative, mix and drying before, in feed liquid, just contained a large amount of crystal, the process of crystallization continues to run through whole batch mixing and dry process, complete the transformation of crystallizable syrup to crystallised sugar, products obtained therefrom is nonhygroscopic, can under hot conditions, molten state not appear, instantly-soluble is good, and is easy to use.During flash drying, mixed moisture content of material is low, and the material heated time is short, and product can not form bad color or local flavor.And relative and other drying modes, the air stream drying treatment capacity is large, can meet requirements of mass production.
[beneficial effect]
the invention has the beneficial effects as follows: shortened the Production Flow Chart of existing production technique, with existing crystallization processes, compare, the investment of production equipment of the inventive method reduces approximately 30%, production cost reduces approximately 40%, the yield of product is by approximately 50% having brought up to more than 85%, crystallization time has shortened to about 40h by 80～100h, and do not have a large amount of crystalline mother solutions to need circular treatment, the poor high fructose syrup of output quality not, the products obtained therefrom color, sugariness, mouthfeel and solvability all meet or exceed the index of correlation of sucrose, under suitable terms of packing, nonhygroscopic below 50 ℃, vitreous clinker not, can all or part of substituting saccharose, widespread use in food service industry.
[embodiment]
By following embodiment, can understand better the present invention.
Embodiment 1: adopt the inventive method to prepare sand shape crystallised sugar
The implementation step of this embodiment is as follows:
A, raw materials pretreatment
In Wuhan City Jin Dege sugar industry company limited, sell, its concentration is take the F42 high fructose syrup of high fructose syrup gross weight 75.4%, DE value 96.0 as raw material, the vacuum drum scraper drier that use is sold by the imperial drying plant of Changzhou person of outstanding talent company limited carries out concentration time 80s at 85 ℃ of temperature, the dry substance concentration of described high fructose syrup is brought up to concentrated high fructose syrup weighing scale 85%, then put into crystallizer tank, the plate-type heat exchanger that uses Changzhou to contain the sale of lattice interchanger company limited carries out heat exchange and is cooled to below 60 ℃.
Described dry substance concentration is to adopt Abbe refractometer to measure, and described DE value is that employing standard GB/T20885-2007 measures.
B, crystallization
In the cold concentrated high fructose syrup that obtains toward steps A, add dry biomass 6% crystallised sugar of usining in described concentrated high fructose syrup as crystal seed, described crystallised sugar crystal seed is comprised of according to weight ratio glucose and fructose at 58: 42; Then stir; Again its feed liquid is cooled to 15 ℃ of temperature according to 3 ℃/h of speed in temperature fall time 12h; Then under the condition of 15 ℃ of temperature and stirring, be incubated 28h;
C, batch mixing
In the Zhangjagang City tiger jumps the super mixer that mechanical company limited sells, allow the feed liquid that step B obtains mix according to weight ratio 1:0.8 with described crystallised sugar, obtain a kind of compound;
The D drying
The flash drying equipment that compound that step C obtains adopts Jianda Drying Equipment Co., Ltd., Changzhou to sell carries out drying and dehydrating 150 ℃ of temperature, until its water-content is with the dried feed weighing scale below 4%; Then screening obtains described sand shape crystallised sugar.Adopt the direct drying method that this specification sheets is described to measure, the water-content of sand shape crystallised sugar prepared by the present embodiment is in sand shape crystallised sugar gross weight 3.4%.
Dry sand shape crystallised sugar uses normally used screening plant in the art to sieve, and collects 15～25 purpose products, and sieve top is divided after crushed and divided with lower part of screen the crystal seed that is mixed for production method of the present invention.The product that obtains carries out packaging seal as early as possible under the condition of controlling packing humidity.
The present embodiment uses 1500kg F42 high fructose syrup raw material (concentration 75.4%, DE value 96.0), crystal seed 67.86kg(moisture content 3.7%) and batch mixing crystallised sugar 1050kg(moisture content 3.7%), prepare 1965.3kg sand shape crystallised sugar.
According to the following equation by F42 high fructose syrup material quantity with prepare sand shape crystallised sugar amount and calculate its productive rate:
Formula productive rate=sand shape crystallised sugar quality * dry matter content ÷ (high fructose syrup material quantity * dry matter content+crystal seed quality * dry matter content+batch mixing crystallised sugar * dry matter content)
The sand shape crystallised sugar productive rate of this embodiment is 86.0%.
Embodiment 2: adopt the inventive method to prepare sand shape crystallised sugar
The implementation step of this embodiment is as follows:
A, raw materials pretreatment
In Wuhan City Jin Dege sugar industry company limited, sell, its concentration is take the F42 high fructose syrup of high fructose syrup gross weight 80.0%, DE value 96.2 as raw material, the vacuum drum scraper drier that use is sold by the positive drying plant of Changzhou product company limited carries out concentration time 100s at 80 ℃ of temperature, the dry substance concentration of described high fructose syrup is brought up to concentrated high fructose syrup weighing scale 90%, then put into crystallizer tank, the plate-type heat exchanger that uses Changzhou to contain the sale of lattice interchanger company limited carries out heat exchange and is cooled to below 60 ℃; Dry substance concentration is identical with embodiment 1 with the measuring method of DE value.
B, crystallization
In the cold concentrated high fructose syrup that obtains toward steps A, add dry biomass 4% crystallised sugar of usining in described concentrated high fructose syrup as crystal seed, described crystallised sugar crystal seed is comprised of according to weight ratio glucose and fructose at 58: 42; Then stir; Again its feed liquid is cooled to 13 ℃ of temperature according to 4 ℃/h of speed in temperature fall time 8h; Then under the condition of 20 ℃ of temperature and stirring, be incubated 32h;
C, batch mixing
In the super mixer that the triumphant mechanical company limited in Zhangjagang City ten thousand sells, allow the feed liquid that step B obtains mix according to weight ratio 1:0.8 with described crystallised sugar, obtain a kind of compound;
The D drying
The flash drying equipment that compound that step C obtains adopts Jianda Drying Equipment Co., Ltd., Changzhou to sell carries out drying and dehydrating 130 ℃ of temperature, until its water-content is with the dried feed weighing scale below 4%; Then screening obtains described sand shape crystallised sugar.The water-content that adopts the measuring method identical with embodiment 1 to measure sand shape crystallised sugar prepared by the present embodiment is 3.0%.
Dry sand shape crystallised sugar uses normally used screening plant in the art to sieve, and collects 15～25 purpose products, and sieve top is divided after crushed and divided with lower part of screen the crystal seed that is mixed for production method of the present invention.The product that obtains carries out packaging seal as early as possible under the condition of controlling packing humidity.
Use 1800kg F42 high fructose syrup raw material (concentration 80.0%, DE value 96.2), crystal seed 57.6kg(moisture content 3.5%), batch mixing use crystallised sugar 1250kg(moisture content 3.5%), prepare 2403.7kg sand shape crystallised sugar.
According to the formula of embodiment 1, by F42 high fructose syrup material quantity, with the productive rate that makes sand shape crystallised sugar amount and calculate the shape crystallised sugar that shakes out, be 86.3%.
Embodiment 3: adopt the inventive method to prepare sand shape crystallised sugar
The implementation step of this embodiment is as follows:
A, raw materials pretreatment
In Shandong Xiwang Sugar Co., Ltd, sell, its concentration is take the F42 high fructose syrup of high fructose syrup gross weight 76.2%, DE value 96.6 as raw material, the vacuum drum scraper drier that use is sold by the dry Engineering Co., Ltd of Jiangsu pioneer carries out concentration time 85s at 83 ℃ of temperature, the dry substance concentration of described high fructose syrup is brought up to concentrated high fructose syrup weighing scale 88%, then put into crystallizer tank, the plate-type heat exchanger that uses Changzhou Rong Zhen drying plant company limited to sell carries out heat exchange and is cooled to below 60 ℃; Dry substance concentration is identical with embodiment 1 with the measuring method of DE value.
B, crystallization
In the cold concentrated high fructose syrup that obtains toward steps A, add dry biomass 5% crystallised sugar of usining in described concentrated high fructose syrup as crystal seed, described crystallised sugar crystal seed is comprised of according to weight ratio glucose and fructose at 58: 42; Then stir; Again its feed liquid is cooled to 14 ℃ of temperature according to 3.5 ℃/h of speed in temperature fall time 10h; Then under the condition of 18 ℃ of temperature and stirring, be incubated 30h;
C, batch mixing
In the super mixer that the mechanical company limited of the grand base in Zhangjagang City sells, allow the feed liquid that step B obtains mix according to weight ratio 1:1.0 with described crystallised sugar, obtain a kind of compound;
The D drying
The flash drying equipment that compound that step C obtains adopts the dry Engineering Co., Ltd of Jiangsu pioneer to sell carries out drying and dehydrating 145 ℃ of temperature, until its water-content is with the dried feed weighing scale below 4%; Then screening obtains described sand shape crystallised sugar.The water-content that adopts the measuring method identical with embodiment 1 to measure sand shape crystallised sugar prepared by the present embodiment is 3.2%.
Dry sand shape crystallised sugar uses normally used screening plant in the art to sieve, and collects 15～25 purpose products, and sieve top is divided after crushed and divided with lower part of screen the crystal seed that is mixed for production method of the present invention.The product that obtains carries out packaging seal as early as possible under the condition of controlling packing humidity.
Use 1200kg F42 high fructose syrup raw material (concentration 76.2%, DE value 96.6), crystal seed 45.72kg(moisture content 3.1%), batch mixing use crystallised sugar 1050kg(moisture content 3.1%), prepare 1775.5kg sand shape crystallised sugar.
According to the formula of embodiment 1, by F42 high fructose syrup material quantity, with preparing the productive rate that sand shape crystallised sugar amount calculates its sand shape crystallised sugar, be 85.5%.
Embodiment 4: adopt the inventive method to prepare sand shape crystallised sugar
The implementation step of this embodiment is as follows:
A, raw materials pretreatment
In Shandong Luzhou Biological Science & Tech. Co., Ltd., sell, its concentration is take the F42 high fructose syrup of high fructose syrup gross weight 75.2%, DE value 96.0 as raw material, the vacuum drum scraper drier that use is sold by the positive drying plant of Changzhou product company limited carries out concentration time 95s at 84 ℃ of temperature, the dry substance concentration of described high fructose syrup is brought up to concentrated high fructose syrup weighing scale 86%, then put into crystallizer tank, the plate-type heat exchanger that uses Changzhou good strong machinofacture company limited to sell carries out heat exchange and is cooled to below 60 ℃; Dry substance concentration is identical with embodiment 1 with the measuring method of DE value.
B, crystallization
In the cold concentrated high fructose syrup that obtains toward steps A, add dry biomass 4.6% crystallised sugar of usining in described concentrated high fructose syrup as crystal seed, described crystallised sugar crystal seed is comprised of according to weight ratio glucose and fructose at 58: 42; Then stir; Again its feed liquid is cooled to 14.5 ℃ of temperature according to 3.5 ℃/h of speed in temperature fall time 10h; Then under the condition of 16 ℃ of temperature and stirring, be incubated 29h;
C, batch mixing
In the super mixer that the triumphant mechanical company limited in Zhangjagang City ten thousand sells, allow the feed liquid that step B obtains mix according to weight ratio 1:1.1 with described crystallised sugar, obtain a kind of compound;
The D drying
The flash drying equipment that compound that step C obtains adopts the dry Engineering Co., Ltd of Changzhou power horse to sell carries out drying and dehydrating 135 ℃ of temperature, until its water-content is with the dried feed weighing scale below 4%; Then screening obtains described sand shape crystallised sugar.The water-content that adopts the measuring method identical with embodiment 1 to measure sand shape crystallised sugar prepared by the present embodiment is 2.9%.
Dry sand shape crystallised sugar uses normally used screening plant in the art to sieve, and collects 15～25 purpose products, and sieve top is divided after crushed and divided with lower part of screen the crystal seed that is mixed for production method of the present invention.The product that obtains carries out packaging seal as early as possible under the condition of controlling packing humidity.
Use 1000kg F42 high fructose syrup raw material (concentration 75.2%, DE value 96.0), crystal seed 34.59kg(moisture content 3.3%), batch mixing use crystallised sugar 950kg(moisture content 3.3%), prepare 1505.8kg sand shape crystallised sugar.
According to the formula of embodiment 1, by F42 high fructose syrup material quantity, with preparing the productive rate that sand shape crystallised sugar amount calculates its sand shape crystallised sugar, be 85.8%.
The comparative example 1: according to prior art, prepare sand shape crystallised sugar
With reference to sand shape crystallised sugar preparation method (Li Wei, Wang Fei, " a kind of novel sugared source-crystallization high fructose syrup ", " Chinese food industry ", the 10th phase in the 2006) preparation of extensively adopting at present.
Carry out in two steps crystallization.
Glucose crystallization: get the glucose syrup (concentration 25.1% of 5t through processing such as decolouring desalinations, DE value 96.2) triple-effect evaporator of selling via Jiangyin City China Sheng medicine equipment company limited is concentrated to concentration 72.5%, the plate-type heat exchanger adjusting feed temperature to 60 ℃ of selling with trade(brand)name through contained lattice interchanger company limited by Changzhou again, send into crystallizer.Then add the 31.4kg crystalline dextrose as crystal seed, stir.First adopt nature cooling 12h, feed temperature is about 46～48 ℃, then per hour lowering the temperature≤the speed cooling of 0.4 ℃ 28 hours, by sugared temperature drop to approximately 35 ℃, finally per hour lowering the temperature≤0.65 ℃ the syrup temperature is dropped to 22 ℃ from 35 ℃.In crystallisation process, the crystallizer mixing speed is 3min/360 °.Feed liquid is through centrifugation, and mother liquor gets rid of and takes off 4～6 minutes, then washes with water five times, each washing is wet sugared 20 seconds, finally dewatered 4 minutes, and discharging, the glucose crystal is through three grades of air stream dryings (secondary hot blast one-level cold wind, temperature are respectively 108～115 ℃, 30～40 ℃, 5～15 ℃).Obtain crystalline dextrose 840.9kg, isolated washing lotion and mother liquor enter the recycle of the refining workshop section in front road entirely after mixing, and after recycle, every 1t dry-matter glucose approximately can obtain the 670kg crystalline dextrose.
fructose crystallization: get 10t glucose syrup (concentration 45.1%, DE value 96.2), through the isomerization post of being sold by lake, Wuxi City shore medicine instrument factory, carry out conventional isomerization, obtain 42% high fructose syrup 12.3t(concentration 36.6%), through ion exchange system desalination under normal condition of being sold by Sandamo Science and Technology (Xiamen) Co., Ltd., material enters triple-effect evaporator again and is concentrated into concentration by weight 60.5%, through what by Sandamo Science and Technology (Xiamen) Co., Ltd., sold, simulation moving-bedly carry out the conventional chromatogram separation and purification again, obtain dried glucose syrup 8.5t(concentration 30.2%, in dry-matter, glucose content 88.2%) and high fructose syrup 5.7t(concentration 31.6%, in dry-matter, fructose content 96.4%), high glucose slurry is concentrated to concentration by weight 45%, return to next production cycle isomerization again again, high fructose syrup adopts conventional essence filter to take off flavor through the activated carbon column of being sold by lake, Wuxi City shore medicine instrument factory again, through triple-effect evaporator and cylinder scraper plate drying, must be concentrated to concentration 95.4%, add the crystal diabetin (moisture content 1.4%) of 45.7kg as crystal seed, feed temperature is down to 52～54 ℃, insulation growing the grain 80h, by crystal and mother liquor centrifugation, separate the xln process air stream drying that obtains, obtain the about 731.5kg(moisture content 1.5% of crystal diabetin).Separate and obtain the about 1.0t(concentration 57.9% of mother liquor, dry-matter fructose content 80.5%), mother liquor turns back to the refining workshop section of isomerization gained syrup, recycle.Circulate after three times, by the high glucose slurry that obtains after mother liquor and chromatographic separation and the residual mixing at night of mother liquor of crystalline dextrose, obtain the F55 high fructose syrup, 1t dry-matter glucose obtains 450kg crystal diabetin and 650kgF55 high fructose syrup.
As can be known by said process, 2t dry-matter glucose can obtain 450kg crystal diabetin and 670kg glucose, and crystal diabetin and crystallization glucose sugar are mixed in the ratio of 42: 58 is composite, can obtain the about 1070kg of sand shape crystallised sugar, residue 50kg glucose.
Embodiment 1-4 and comparative example's 1 result of implementation is come together in following table 1.
Table 1: embodiment 1-4 and comparative example's 1 result of implementation
The result of table 1 most clearly shows, with the comparative example, compares, and the technical process of the embodiment of the present invention is simplified greatly, and operation easier reduces greatly; The sugar producing rate of embodiment of the present invention 1-4 is far above the sugar producing rate of prior art, and without mother liquor and by product.The crystallization time of embodiment of the present invention 1-4 is far below the crystallization time of prior art, thereby improve very significantly plant factor and production efficiency, reduce very significantly facility investment, so the production cost of embodiment of the present invention 1-4 is significantly less than the production cost of prior art.
Claims (8)
1. the preparation method of a sand shape crystallised sugar is characterized in that the step of described method is as follows:
A, raw materials pretreatment
Adopt concentration method that the dry substance concentration of high fructose syrup is brought up to concentrated high fructose syrup weighing scale 85%～90%, then put into crystallizer tank, be cooled to below 60 ℃;
B, crystallization
In the cold concentrated high fructose syrup that obtains toward steps A, add dry biomass 4～6% crystallised sugars of usining in described concentrated high fructose syrup as crystal seed, then stir; Again its feed liquid is cooled to 13～15 ℃ of temperature according to 3～4 ℃/h of speed; Then under the condition of 15～20 ℃ of temperature and stirring, be incubated 28～32h;
C, batch mixing
In mixing tank, allow the feed liquid that step B obtains mix according to weight ratio 1:0.8～1.2 with described crystallised sugar, obtain a kind of compound;
The D drying
Compound that step C obtains adopts flash drying equipment to carry out drying and dehydrating 130～150 ℃ of temperature, until its water-content is with the dried feed weighing scale below 4%; Then screening obtains described sand shape crystallised sugar.
2. preparation method according to claim 1, is characterized in that the DE value of described high fructose syrup is more than 96.
3. preparation method according to claim 1, is characterized in that in steps A, and described concentration method is to use the vacuum drum scraper drier to carry out concentration time 80～100s at 80～85 ℃ of temperature.
4. preparation method according to claim 1, is characterized in that in steps A, described cooling be that to use plate-type heat exchanger to carry out heat exchange cooling.
5. preparation method according to claim 1, is characterized in that in step B, and described crystallised sugar crystal seed is comprised of according to weight ratio glucose and fructose at 58: 42.
6. preparation method according to claim 1, is characterized in that in step B, the time that described feed liquid is lowered the temperature according to described speed is 8～12h.
7. preparation method according to claim 1, is characterized in that in step C, and the feed liquid that step B obtains uses high-speed mixer to mix with described crystallised sugar.
8. preparation method according to claim 1, the inlet temperature that it is characterized in that described flash drying equipment is 135 ℃, air outlet temperature is 45 ℃.
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