CN104710638B - Method for improving oil resistance of isolated soy protein film - Google Patents
Method for improving oil resistance of isolated soy protein film Download PDFInfo
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- CN104710638B CN104710638B CN201510112258.5A CN201510112258A CN104710638B CN 104710638 B CN104710638 B CN 104710638B CN 201510112258 A CN201510112258 A CN 201510112258A CN 104710638 B CN104710638 B CN 104710638B
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Abstract
The invention relates to a method for improving oil resistance of an isolated soy protein film. The method is characterized by comprising the steps of dissolving isolated soy protein in distilled water to form suspension, heating and stirring in a water bath at a certain temperature, adding fatty acid sucrose ester, stirring uniformly at a high speed to form a clear solution, carrying out filtration and degassing, pouring the mixed solution onto an organic glass plate for uniform flow casting, placing horizontally, and putting in an oven for drying and film forming after forming of the surface of the film. The method can greatly improve the oil resistance of the isolated soy protein film, retard oil migration and diffusion and ensure stable product quality.
Description
Technical field
The invention belongs to polymeric material field is and in particular to a kind of side of raising soybean separation protein tunica albuginea oil resistance performance
Method.
Background technology
Edible food packaging film is a kind of new, and the porous network structure with edible natural material as raw material is thin
Film.It can be changed into a kind of edible raw material after realizing packaging function again.This packaging material will not produce discarded object, can make money
Source is utilized, and therefore, it is one of emphasis of following Packaging Industry development.In existing edible packing membrane
In, edible soy separation albumen（Soy protein isolate, SPI）The research and development of film enjoy the green grass or young crops of packaging material researcher
Look at.Due to the excellent film forming of soybean protein isolate, oxygen barrier and higher nutritive value, the exploitation of edible film enjoys
Concern.
The oil resistance performance of soybean separation protein tunica albuginea is strong and weak, is related to migration and the diffusion speed of grease, thus affecting product
The stablizing of quality.The molecular weight of soybean separation protein white matter molecule is larger, and molecular density is higher, and intermolecular have substantial amounts of two sulphur
Key, bonding action is stronger, thus combine stronger so that molecular cavities very little, the gelling performance of soybean protein isolate makes simultaneously
Obtain colloidal solution and there is certain concentration and viscosity, form fine and close film, but whole molecule hydrophobic grouping exposure is more, therefore
This film is weaker to the obstructing capacity of grease
Poor oil resistance performance limits its application in practice, and a lot of scholars attempt passing through various physics, chemistry, enzyme
To improve this performance of protein film with the method for blending.Tang Yali et al. have studied using plasticizer and baking temperature to soybean
The impact of protein film oil resistance performance, find increase plasticizer consumption can improve film elongation at break, reduce film tension strong
Degree, but inconspicuous to oil resistance performance impact.Film liquid is heat-treated, its tensile strength and elongation at break can be improved,
But oily coefficient can be caused to increase so that oil resistance performance reduces.Although some methods can improve soybean protein film to a certain extent
Oil resistance performance, but all be unfavorable for amplify it is difficult to adapt to industrialized production demand.
Content of the invention
It is an object of the invention to provide a kind of method improving soybean separation protein tunica albuginea oil resistance performance.
The method of the raising soybean separation protein tunica albuginea oil resistance performance that this patent is provided, is characterized in that technique is：By soybean
Separate albumen to be dissolved in distilled water, form suspension.Heating stirring in the water-bath of uniform temperature, adds fatty acid cane sugar ester
Class, and high-speed stirred is uniformly, forms clear solution, filters, degassing.Mixed solution is poured on poly (methyl methacrylate) plate to be cast uniformly,
Horizontal positioned.After film surface forming, put into drying and forming-film in baking oven.
Fatty acid sucrose esters of the present invention include stearic acid sucrose ester, palmitic acid sucrose ester and sucrose oleate ester.
The concentration adding fatty acid cane sugar ester of the present invention is 5% ~ 25%（W/W, fatty acid cane sugar ester/soybean separation
Albumen）.
The temperature of heating water bath of the present invention is 50 ~ 80 DEG C.
The time of heating water bath of the present invention is 30 ~ 150 min.
Oily coefficient is the index of the lipid obstructing capacity of film thoroughly.The assay method of oily coefficient is thoroughly：5 mL ready-mixed oils are added
Enter in test tube, with film to be measured sealing, be inverted on filter paper, place 7 days, weigh filter paper quality, observe the oil trace on filter paper.
Oily coefficient is calculated as follows thoroughly：
Wherein,poFor oily coefficient thoroughly, g mm/ (m2·d)；
∆WFor the change of filter paper quality, g；
FTFor thickness, mm；
SFor membrane area, m2；
TFor standing time, d.
In a preferred embodiment of the present invention, first, prepare 5%（W/V, albumen/Film-forming aqueous solution）Soybean divide
From protein solution, form suspension.Heat 90 min in 80 DEG C of water-bath, stir, then in protein solution
According to 5%（W/W, fatty acid sucrose esters material/soybean protein isolate）Add stearic acid sucrose ester, palmitic acid sucrose ester, oleic acid
One of sucrose ester, is mixing uniformly to form clear solution, filters, degassing；Mixed solution is poured on poly (methyl methacrylate) plate upper
Prolong uniformly, horizontal positioned 2 h.After film surface forming, put in 80 DEG C of baking ovens and 2 hs are dried, take off film；In 25 DEG C of temperature, relatively
48 h are preserved standby in the drier of humidity 50%.
Specific embodiment
Further describe the present invention following with embodiment, but be not construed as limiting the scope of invention.
Embodiment 1
Concentration is dissolved in distilled water for 50 mg/mL soybean protein isolates, forms suspension.80 DEG C of water-bath adds
Thermal agitation 90 min, adds stearic acid sucrose ester 5%（W/W, stearic acid sucrose ester/albumen）, and high-speed stirred is uniformly, is formed thoroughly
Bright solution, filters, degassing.Mixed solution is poured on poly (methyl methacrylate) plate to be cast uniformly, horizontal positioned 2 h.After film surface forming,
Put in 80 DEG C of baking ovens and 2 hs are dried, take off film immediately, in 25 DEG C of temperature, preserve 48 h in the drier of relative humidity 50% standby
With.
According to the assay method of above-mentioned oil coefficient, measure the thoroughly oily coefficient of this SPI filmpoFor 3.45 g mm/ (m2·
d).
Embodiment 2
Concentration is dissolved in distilled water for 50 mg/mL soybean protein isolates, forms suspension.50 DEG C of water-bath adds
Thermal agitation 150 min, adds palmitic acid sucrose ester 15%（W/W, palmitic acid sucrose ester/albumen）, and high-speed stirred is uniformly, is formed
Clear solution, filters, degassing.Mixed solution is poured on poly (methyl methacrylate) plate to be cast uniformly, horizontal positioned 2 h.Film surface forming
Afterwards, put in 80 DEG C of baking ovens and 2 hs are dried, take off film immediately, in 25 DEG C of temperature, in the drier of relative humidity 50%, preserve 48 h
Standby.
According to the assay method of above-mentioned oil coefficient, measure the thoroughly oily coefficient of this SPI filmpoFor 5.71 g mm/ (m2·
d).
Embodiment 3
Concentration is dissolved in distilled water for 50 mg/mL soybean protein isolates, forms suspension.65 DEG C of water-bath adds
Thermal agitation 30 min, adds sucrose oleate ester 25%（W/W, sucrose oleate ester/albumen）, and high-speed stirred is uniformly, is formed transparent molten
Liquid, filters, degassing.Mixed solution is poured on poly (methyl methacrylate) plate to be cast uniformly, horizontal positioned 2 h.After film surface forming, put into
2 hs are dried in 80 DEG C of baking ovens, take off film immediately, in 25 DEG C of temperature, preserve 48 h in the drier of relative humidity 50% standby.
According to the assay method of above-mentioned oil coefficient, measure the thoroughly oily coefficient of this SPI filmpoFor 7.43 g mm/ (m2·
d).
Embodiment 4（Do not add the control group of fatty acid sucrose esters）
Concentration is dissolved in distilled water for 50 mg/mL soybean protein isolates, forms suspension.80 DEG C of water-bath adds
Thermal agitation 90 min, forms clear solution, filters, degassing.Mixed solution is poured on poly (methyl methacrylate) plate and is cast uniformly, level is put
Put 2 h.After film surface forming, put in 80 DEG C of baking ovens and 2 hs are dried, take off film immediately, in 25 DEG C of temperature, relative humidity 50%
48 h are preserved standby in drier.
According to the assay method of above-mentioned oil coefficient, measure the thoroughly oily coefficient of this SPI filmpoFor 24.58 g mm/ (m2·
d).
Claims (5)
1. a kind of method improving soybean separation protein tunica albuginea oil resistance performance is it is characterised in that soluble in water by soybean protein isolate,
Form suspension；Heating water bath, adds fatty acid sucrose esters material, and high-speed stirred uniformly, forms clear solution, filters, and takes off
Gas；It is cast uniformly on the poly (methyl methacrylate) plate that mixed solution is poured on；After film surface forming, put into drying and forming-film in baking oven.
2. a kind of method of the raising soybean separation protein tunica albuginea oil resistance performance according to claim 1 is it is characterised in that institute
The fatty acid sucrose esters material stated is one of stearic acid sucrose ester, palmitic acid sucrose ester, sucrose oleate ester.
3. a kind of method of the raising soybean separation protein tunica albuginea oil resistance performance according to claim 1 is it is characterised in that add
The mass ratio entering the fatty acid sucrose esters material in soybean protein isolate suspension is：Fatty acid sucrose esters material/big
Beans separation albumen=5% ~ 25%.
4. a kind of method of the raising soybean separation protein tunica albuginea oil resistance performance according to claim 1 is it is characterised in that water
The temperature of bath heating is 50 ~ 80 DEG C.
5. a kind of method of the raising soybean separation protein tunica albuginea oil resistance performance according to claim 1 is it is characterised in that water
The time of bath heating is 30 ~ 150 min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510112258.5A CN104710638B (en) | 2015-03-16 | 2015-03-16 | Method for improving oil resistance of isolated soy protein film |
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| CN201510112258.5A CN104710638B (en) | 2015-03-16 | 2015-03-16 | Method for improving oil resistance of isolated soy protein film |
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| CN104710638A CN104710638A (en) | 2015-06-17 |
| CN104710638B true CN104710638B (en) | 2017-02-22 |
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| CN106243398B (en) * | 2016-07-27 | 2018-11-30 | 四川农业大学 | A kind of instant packaging film of folding basal part of the ear caraway edibility, flavor pack and preparation method thereof |
| CN109320971A (en) * | 2018-11-12 | 2019-02-12 | 蚌埠学院 | A kind of edible wheat embryo film and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101456979A (en) * | 2008-12-24 | 2009-06-17 | 曹龙奎 | Edible packaging film prepared by potato residue and preparation method |
| CN101496559A (en) * | 2008-01-31 | 2009-08-05 | 李柯庆 | Edible packaging film and preparation method thereof |
| CN102888123A (en) * | 2012-10-11 | 2013-01-23 | 沈阳创达技术交易市场有限公司 | Edible food packing film |
| CN102888124A (en) * | 2012-10-11 | 2013-01-23 | 沈阳创达技术交易市场有限公司 | Edible food packing film and preparation method thereof |
-
2015
- 2015-03-16 CN CN201510112258.5A patent/CN104710638B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101496559A (en) * | 2008-01-31 | 2009-08-05 | 李柯庆 | Edible packaging film and preparation method thereof |
| CN101456979A (en) * | 2008-12-24 | 2009-06-17 | 曹龙奎 | Edible packaging film prepared by potato residue and preparation method |
| CN102888123A (en) * | 2012-10-11 | 2013-01-23 | 沈阳创达技术交易市场有限公司 | Edible food packing film |
| CN102888124A (en) * | 2012-10-11 | 2013-01-23 | 沈阳创达技术交易市场有限公司 | Edible food packing film and preparation method thereof |
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