CN108586624A - A kind of method of air normal pressure plasma jet modification of microcrystalline starch - Google Patents
A kind of method of air normal pressure plasma jet modification of microcrystalline starch Download PDFInfo
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- CN108586624A CN108586624A CN201810461992.6A CN201810461992A CN108586624A CN 108586624 A CN108586624 A CN 108586624A CN 201810461992 A CN201810461992 A CN 201810461992A CN 108586624 A CN108586624 A CN 108586624A
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- starch
- plasma jet
- normal pressure
- pressure plasma
- modification
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B30/00—Preparation of starch, degraded or non-chemically modified starch, amylose, or amylopectin
- C08B30/12—Degraded, destructured or non-chemically modified starch, e.g. mechanically, enzymatically or by irradiation; Bleaching of starch
Abstract
The invention discloses a kind of methods of air normal pressure plasma jet modification of microcrystalline starch.This method is that starch is passed through certain density HCl treatment, then mild de- branch is gelatinized, recrystallizes, obtain the higher Microcrystalline Starch of crystallinity, distilled water is added and is made into a certain concentration starch milk, directly air normal pressure plasma jet is used to handle.It is then centrifuged for being precipitated, absolute ethyl alcohol washs 3 times, vacuum freeze drying, grinds, and sieving obtains modification of microcrystalline starch.This starch has higher water binding ability and water swelling volume etc., a degree of destruction has occurred in terms of starch structure, this can provide theoretical foundation for the further research of starch, can be used in starch industry, improve the characteristic of starch-based product well.
Description
Technical field
The invention belongs to modified starch production technical fields, and in particular to a kind of air normal pressure plasma jet modification is micro-
The method of brilliant starch.
Background technology
Recently, starch is handled with plasma apparatus, by plasma depolymerization, etching and crosslinked action, to starch
The research of modified aspect receives the favor of domestic and foreign scholars.Because there are many applied defects, such as cold water not to allow for starch itself, add
Heat gelatinization, viscosity is high, and transparency is low, and to enzyme tolerance etc., the modified aspect of starch always is the main flow direction of this research field,
Wherein physical modification has the characteristics that pollution is low, and modified starch is used directly for food service industry, and corona treatment is close
Emerging a kind of non-thermal physical refining processes over year, has green pollution-free, and low energy consumption, and efficiency is high, and processing is simple, at present
Have become the research hotspot of field of starch modification.
Currently, researcher completes modification of the plasma to starch using dry process mostly, and both for
The modification of ative starch mainly directly handles dried starch, it has been found that dry process is easy to plasma reaction device
Acquisition modified starch, the method simple process, reaction mechanism are also very clear.But in practical operation, the method exists certain
Defect such as occurs handling non-uniform phenomenon, and the sample size that dry process disposably obtains is seldom, plasma modification starch
Method also needs to be further improved.
Air normal pressure plasma technique is in atmospheric conditions, using high-tension current by part of atoms in air or original
The ionization of son group generates the electroneutral ionized gas substance of negative ions composition, can make substance by corona treatment
A variety of physics, chemical change, such as surface etching effect, internal depolymerization or formation cross-linked layer etc., to reach food sterilization,
The purpose of enzyme deactivation, raising percentage of seedgermination, modified starch.
Microcrystalline Starch is that a kind of crystallinity is high, and solubility property is good, and transparency is high, is not easy the Acid modified starch being gelatinized, has
Industry and food processing application prospect well.Corona treatment is formed sediment as emerging starch conversion method in crystallite
Research in terms of powder modification not yet, is handled Microcrystalline Starch with air normal pressure plasma jet technology, in crystallite
Some oxygen-containing polar groups are introduced in starch, improve Microcrystalline Starch hydrophily, and caking property etc. further increases the reality of Microcrystalline Starch
Border application performance.The present invention can also provide the new direction of starch conversion for the scholar in later this direction of researcher, be ground for starch
Study carefully field and more theory supports are provided.
Invention content
For problems of the prior art, the present invention provides a kind of air normal pressure plasma jet modification of microcrystalline shallow lake
The method of powder belongs to novel physical modification technology, and the sample of sufficient amount can be obtained using this method processing starch, and relative to
General dry process, modification is more abundant, directly handles certain density starch milk using plasma torch jet stream, this just has
The inhomogeneities of dry process is avoided to effect, air normal pressure plasma also reduces energy consumption of reaction well.
In order to solve the above technical problems, the present invention uses following technical scheme：
A kind of method of air normal pressure plasma jet modification of microcrystalline starch, includes the following steps：
（1）With hydrochloric acid solution acid-thinned potato starch, every 30 min homogeneous is primary, uniform acidolysis；
（2）It after acidolysis, filters and removes hydrochloric acid solution, filter cake is washed with distilled water 2 times, then adjusts pH to 7 with NaOH solution, is taken out
Water is filtered out, absolute ethyl alcohol washs 3 times, collects filter cake and is placed in and dries to obtain acid-thinned potato starch at room temperature, spare；
（3）With deionized water by step（2）Acid-thinned potato starch obtained is configured to the acid-thinned potato that mass concentration is 10%
Starch emulsion, Heat Gelatinization, boil 2-3 min, and room temperature drops to 25 DEG C, centrifuging and taking supernatant, in -18 DEG C of sharp freezings 12
H, water removal is filtered when thaw at RT to mixture of ice and water, and absolute ethyl alcohol washs 3 times, takes filter cake to be placed in and dry at room temperature, obtain crystallite
Starch；
（4）It takes Microcrystalline Starch that distilled water is added and obtains starch milk, handled with air normal pressure plasma jet；
（5）Air normal pressure plasma jet after treatment, centrifuging and taking precipitation, absolute ethyl alcohol wash 3 times；
（6）Vacuum freeze drying, -50 DEG C, 1.5 h, grinding crosses 100 mesh standard sieves, obtains modification of microcrystalline starch.
The step（1）A concentration of 2.2 mol/L of middle hydrochloric acid solution.
The step（1）The temperature of middle acidolysis is 35 DEG C, and the acidolysis time is 1-7d.
The step（2）The mass concentration of middle NaOH solution is 3%.
The step（3）Rotating speed when middle centrifugation is 3000rpm, centrifugation time 10min.
The step（4）The mass concentration of starch milk is 5-20%.
The step（4）The time of middle air atmospheric plasma jet stream processing is 1-7 min, power 750W, height
For 14.13mm.
The step（5）Rotating speed when middle centrifugation is 3000rpm, centrifugation time 10min.
Potato ative starch is added directly into the hydrochloric acid solution of 2.2 mol/L by the present invention, 35 DEG C of 3 d of mild acidolysis,
Acidified starch is obtained, the acidified starch Heat Gelatinization for being 10% by mass concentration, boil 2-3min, -18 DEG C of sharp freezing 12h, solution
Freeze, filters, obtain the Microcrystalline Starch of relatively high crystallinity, then directly handled with normal pressure gas plasma jet stream, it is different
The Microcrystalline Starch lotion of time, various concentration and different acidolysis number of days, finally centrifugation are precipitated, and vacuum freeze drying is ground
Mill, sieving, obtains plasma jet modification of microcrystalline starch.
Modified starch prepared by the present invention is the white powder of exquisiteness, free from admixture free from extraneous odour.
Above-mentioned homogeneous, suction filtration, vortex, freezing etc. are all the general technologies in current food processing field.
It has the following advantages that compared with prior art：
(1) the normal pressure gas plasma jet stream that the present invention uses is a kind of novel non-thermal physical processing techniques；(2) this hair
The normal pressure gas plasma jet stream of bright middle use handles Microcrystalline Starch；(3) normal pressure gas plasma is used in the present invention
Jet stream handles starch suspension, referred to as wet-treating；（4）The present invention is using potato starch as raw material, by hydrochloric acid solution
Mild acidolysis, the acidified starch for being 10% with mass concentration are gelatinized, and recrystallization obtains the Microcrystalline Starch of higher crystallinity, then
Certain density potato Microcrystalline Starch suspension is chosen, uses air normal pressure plasma jet spray treatment under certain condition,
Plasma can form a kind of novel modified starch to the processing of Microcrystalline Starch, and this starch has higher water binding ability
With water swelling volume etc., a degree of destruction has occurred in terms of starch structure, this can be the further research of starch
Theoretical foundation is provided, can be used in starch industry, improves the characteristic of starch-based product well.
Specific implementation mode
With reference to specific embodiment, the present invention will be further described.It should be understood that following embodiment is merely to illustrate this
The person skilled in the art of the range of invention and is not intended to limit the present invention, the field can make one according to the content of foregoing invention
A little nonessential modifications and adaptations.
Embodiment 1
The method of the air normal pressure plasma jet modification of microcrystalline starch of the present embodiment, includes the following steps：
（1）Using 2.2 mol/L hydrochloric acid solution acid-thinned potato starch, 35 DEG C, acidolysis 3d, every 30 min homogeneous is primary, uniformly
Acidolysis；
（2）After acidolysis, desalination acid solution is filtered, filter cake is washed with distilled water 2 times, the 3rd NaOH solution with mass concentration 3%
PH to 7 is adjusted, water removal is filtered, absolute ethyl alcohol washs 3 times, collects filter cake and is placed in and dries at room temperature, spare；
（3）With deionized water by step（2）Acid-thinned potato starch obtained is configured to the acid-thinned potato that mass concentration is 10%
Starch emulsion, Heat Gelatinization, boil 2-3 min, cools to 25 DEG C at room temperature, 3000 rpm centrifuge 10 min, take supernatant -18
DEG C, 12 h, thaw at RT, until filtering water removal when mixture of ice and water, absolute ethyl alcohol washs 3 times, takes filter cake to be placed in and dries at room temperature,
Obtain Microcrystalline Starch；
（4）It takes Microcrystalline Starch that the starch milk that distilled water obtains 5% is added, 1,3,5 and 7 is handled with air normal pressure plasma jet
Min, 750 W of power, 14.13 mm of height；
（5）After treatment, 3000 rpm centrifuge 10 min, and precipitation, absolute ethyl alcohol is taken to wash 3 times；
（6）With vacuum freeze drying, -50 DEG C, 1.5 h, grinding crosses 100 mesh standard sieves, obtains modification of microcrystalline starch.
After measuring the processing of normal pressure gas plasma jet stream, the architectural characteristic of sample is deteriorated, water binding ability and water expansion
Volume increases, that is to say, that bright this method has destruction to the architectural characteristic of Microcrystalline Starch, and improves Microcrystalline Starch
Physical property, and the method, the influence to Microcrystalline Starch increase with the increase of processing time.
Influence of the different atmospheric plasma jet stream processing time of table 1 to Microcrystalline Starch
Embodiment 2
The method of the air normal pressure plasma jet modification of microcrystalline starch of the present embodiment, includes the following steps：
（1）Using 2.2 mol/L hydrochloric acid solution acid-thinned potato starch, 35 DEG C, acidolysis 3d, every 30 min homogeneous is primary, uniformly
Acidolysis；
（2）After acidolysis, desalination acid solution is filtered, filter cake is washed with distilled water 2 times, the 3rd NaOH solution with mass concentration 3%
PH to 7 is adjusted, water removal is filtered, absolute ethyl alcohol washs 3 times, collects filter cake and is placed in and dries at room temperature, spare；
（3）With deionized water by step（2）Acid-thinned potato starch obtained is configured to the acid-thinned potato that mass concentration is 10%
Starch emulsion, Heat Gelatinization, boil 2-3 min, cools to 25 DEG C at room temperature, 3000 rpm centrifuge 10 min, take supernatant -18
DEG C, 12 h, thaw at RT, until filtering water removal when mixture of ice and water, absolute ethyl alcohol washs 3 times, takes filter cake to be placed in and dries at room temperature,
Obtain Microcrystalline Starch；
（4）Take Microcrystalline Starch that the starch milk that distilled water obtains 5,10,15 and 20% is added, at air normal pressure plasma jet
Manage 5 min, 750 W of power, 14.13 mm of height；
（5）After treatment, 3000 rpm centrifuge 10 min, and precipitation, absolute ethyl alcohol is taken to wash 3 times；
（6）With vacuum freeze drying, -50 DEG C, 1.5 h, grinding crosses 100 mesh standard sieves, obtains modification of microcrystalline starch.
After measuring the processing of normal pressure gas plasma jet stream, the architectural characteristic of sample is deteriorated, water binding ability and water expansion
Volume increases, but the concentration of this change degree and processing Microcrystalline Starch changes unrelated, this method, the influence to Microcrystalline Starch
Degree and the concentration variation of Microcrystalline Starch when processing are almost unrelated.
Influence of the 2 atmospheric plasma jet stream of table to various concentration Microcrystalline Starch
Embodiment 3
The method of the air normal pressure plasma jet modification of microcrystalline starch of the present embodiment, includes the following steps：
（1）Using 2.2 mol/L hydrochloric acid solution acid-thinned potato starch, 35 DEG C, acidolysis 1,3,5 and 7d, every 30 min homogeneous one
It is secondary, uniform acidolysis；
（2）After acidolysis, desalination acid solution is filtered, filter cake is washed with distilled water 2 times, the 3rd NaOH solution with mass concentration 3%
PH to 7 is adjusted, water removal is filtered, absolute ethyl alcohol washs 3 times, collects filter cake and is placed in and dries at room temperature, spare；
（3）With deionized water by step（2）Acid-thinned potato starch obtained is configured to the acid-thinned potato that mass concentration is 10%
Starch emulsion, with deionized water by step（2）Acid-thinned potato starch obtained is configured to the acidolysis Ma Ling that mass concentration is 10%
Sweet potato starch lotion, Heat Gelatinization, boil 2-3 min, cools to 25 DEG C at room temperature, 3000 rpm centrifuge 10 min, take supernatant-
18 DEG C, 12 h, thaw at RT, until filtering water removal when mixture of ice and water, absolute ethyl alcohol washs 3 times, takes filter cake to be placed in and dries in the air at room temperature
It is dry, obtain Microcrystalline Starch；
（4）It takes Microcrystalline Starch that the starch milk that distilled water obtains 5% is added, 5 min, work(is handled with air normal pressure plasma jet
750 W of rate, 14.13 mm of height；
（5）After treatment, 3000 rpm centrifuge 10 min, and precipitation, absolute ethyl alcohol is taken to wash 3 times；
（6）With vacuum freeze drying, -50 DEG C, 1.5 h, grinding crosses 100 mesh standard sieves, obtains modification of microcrystalline starch.
After measuring the processing of normal pressure gas plasma jet stream, the architectural characteristic of sample is deteriorated, water binding ability and water expansion
Volume increases, and this change degree increases with the increase of Microcrystalline Starch acidolysis number of days.
Influence of the 3 atmospheric plasma jet stream of table to different acidolysis number of days Microcrystalline Starch
The basic principles and main features and advantages of the present invention of the present invention have been shown and described above.The technology people of the industry
Member is it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this hairs
Bright principle, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these variations
It all fall within the protetion scope of the claimed invention with improvement.The claimed scope of the invention is by appended claims and its waits
Effect object defines.
Claims (8)
1. a kind of method of air normal pressure plasma jet modification of microcrystalline starch, it is characterised in that include the following steps：
（1）With hydrochloric acid solution acid-thinned potato starch, every 30 min homogeneous is primary, uniform acidolysis；
（2）It after acidolysis, filters and removes hydrochloric acid solution, filter cake is washed with distilled water 2 times, then adjusts pH to 7 with NaOH solution, is taken out
Water is filtered out, absolute ethyl alcohol washs 3 times, collects filter cake and is placed in and dries to obtain acid-thinned potato starch at room temperature, spare；
（3）With deionized water by step（2）Acid-thinned potato starch obtained is configured to the acid-thinned potato that mass concentration is 10%
Starch emulsion, Heat Gelatinization, boil 2-3 min, and room temperature drops to 25 DEG C, centrifuging and taking supernatant, in -18 DEG C of sharp freezings 12
H, water removal is filtered when thaw at RT to mixture of ice and water, and absolute ethyl alcohol washs 3 times, takes filter cake to be placed in and dry at room temperature, obtain crystallite
Starch；
（4）It takes Microcrystalline Starch that distilled water is added and obtains starch milk, handled with air normal pressure plasma jet；
（5）Air normal pressure plasma jet after treatment, centrifuging and taking precipitation, absolute ethyl alcohol wash 3 times；
（6）Vacuum freeze drying, -50 DEG C, 1.5 h, grinding crosses 100 mesh standard sieves, obtains modification of microcrystalline starch.
2. the method for air normal pressure plasma jet modification of microcrystalline starch according to claim 1, it is characterised in that：Institute
State step（1）A concentration of 2.2 mol/L of middle hydrochloric acid solution.
3. the method for air normal pressure plasma jet modification of microcrystalline starch according to claim 1, it is characterised in that：Institute
State step（1）The temperature of middle acidolysis is 35 DEG C, and the acidolysis time is 1-7 d.
4. the method for air normal pressure plasma jet modification of microcrystalline starch according to claim 1, it is characterised in that：Institute
State step（2）The mass concentration of middle NaOH solution is 3%.
5. the method for air normal pressure plasma jet modification of microcrystalline starch according to claim 1, it is characterised in that：Institute
State step（3）Rotating speed when middle centrifugation is 3000rpm, centrifugation time 10min.
6. the method for air normal pressure plasma jet modification of microcrystalline starch according to claim 1, it is characterised in that：Institute
State step（4）The mass concentration of starch milk is 5-20%.
7. the method for air normal pressure plasma jet modification of microcrystalline starch according to claim 1, it is characterised in that：Institute
State step（4）The time of middle air atmospheric plasma jet stream processing is 1-7 min, power 750W, is highly 14.13mm.
8. the method for air normal pressure plasma jet modification of microcrystalline starch according to claim 1, it is characterised in that：Institute
State step（5）Rotating speed when middle centrifugation is 3000rpm, centrifugation time 10min.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109762074A (en) * | 2019-03-01 | 2019-05-17 | 郑州轻工业学院 | A kind of method of plasma-activated water-wet heat modification native starch |
| CN110229241B (en) * | 2019-06-21 | 2021-07-20 | 华南理工大学 | Method for preparing potato hydroxypropyl starch based on cold plasma |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109762074A (en) * | 2019-03-01 | 2019-05-17 | 郑州轻工业学院 | A kind of method of plasma-activated water-wet heat modification native starch |
| CN110229241B (en) * | 2019-06-21 | 2021-07-20 | 华南理工大学 | Method for preparing potato hydroxypropyl starch based on cold plasma |
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