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Microencapsulated chitosan-oligosaccharide, and preparing method and applications thereof

A technology for encapsulating chitosan oligosaccharide and chitosan oligosaccharide, which is applied in the directions of bacteria, applications, and dairy products used in food preparation

Active Publication Date: 2016-08-10
CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In addition, there is no microencapsulation treatment of chitosan oligosaccharides in the market and it is applied to the processing technology and finished products of dairy products.

Method used

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  • Microencapsulated chitosan-oligosaccharide, and preparing method and applications thereof
  • Microencapsulated chitosan-oligosaccharide, and preparing method and applications thereof
  • Microencapsulated chitosan-oligosaccharide, and preparing method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] Embodiment 1: the preparation of microencapsulated chitosan oligosaccharide

[0066] (1) Use deionized water to prepare a 8w / v% solution of whey protein isolate at room temperature, then stir with an electric mixer for 60 minutes to fully dissolve the whey protein isolate, adjust the pH to 8.0, and store at 4°C overnight Fully hydrate the whey protein isolate; finally, heat in a water bath at 80°C for 30 minutes, and cool to room temperature to obtain a whey protein isolate solution;

[0067] (2) Weigh sodium alginate according to the mass ratio of whey protein isolate to sodium alginate of 4:1, and slowly add sodium alginate into deionized water at a temperature of 50°C during the stirring process to fully dissolve After obtaining the sodium alginate solution with a mass fraction of 30%;

[0068] (3) Slowly add sodium alginate solution to the whey protein isolate solution, stir until completely dissolved, and obtain wall material solution;

[0069] (4) Add chitosan o...

Embodiment 2

[0072] Embodiment 2: the preparation of microencapsulated chitosan oligosaccharide

[0073] (1) Sodium caseinate was prepared into a 5w / v% solution with deionized water at room temperature, then stirred with an electric mixer for 120 minutes to fully dissolve the whey protein isolate, then adjusted the pH to 7.0, and stored at 4°C overnight Fully hydrate the whey protein isolate; finally, heat in a water bath at 95°C for 15 minutes, and cool to room temperature to obtain a sodium caseinate solution;

[0074] (2) Weigh maltodextrin according to the mass ratio of sodium caseinate to maltodextrin of 2:1, and slowly add maltodextrin into deionized water at a temperature of 60°C during the stirring process to fully dissolve After obtaining a mass fraction of 30% maltodextrin solution;

[0075] (3) Slowly add the maltodextrin solution to the sodium caseinate solution, stir until completely dissolved, and obtain the wall material solution;

[0076] (4) Add chitosan oligosaccharides...

Embodiment 3

[0080] Embodiment 3: the preparation of modulating milk

[0081] Select the qualified fresh milk of microorganism and physicochemical index, add 0.10% microencapsulated chitosan oligosaccharide with a wall-core ratio of 2:1, 0.3% commercially available stabilizer and 0.2% aspartame, and then heat Homogenization is carried out under the conditions of 58°C, primary homogenization pressure of 18MPa, and secondary homogenization pressure of 3MPa; finally, sterilized by ultra-high temperature sterilization at 135°C / 5s, and aseptically filled after cooling, to obtain Modified milk.

[0082] A 180-day storage experiment was carried out on the obtained modified milk, and the storage stability of the microencapsulated chitosan oligosaccharide modified milk was studied with the fat floating rate, protein precipitation rate and stability index as indicators. The milk and common modulation milk were used as a control, and the measurement results are shown in Tables 1, 2, and 3. It can b...

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Abstract

The invention discloses microencapsulated chitosan-oligosaccharide, and a preparing method and applications thereof, belonging to the technical field of food processing. A wall material of the microencapsulated chitosan-oligosaccharide is composed of protein and polysaccharide, the core material is chitosan-oligosaccharide the molecular weight of which is less than 5000 Da, and the mass ratio of the wall material to the core material is (2:1)-(10:1). The microencapsulated chitosan-oligosaccharide is prepared by separately dissolving the core material and the wall material, mixing to obtain a mixed solution, pretreating the mixed solution through a high-speed dispersing machine, homogenizing through a high-pressure microjet nanometer homogenizer, and performing spray-drying. The microencapsulated chitosan-oligosaccharide prepared by the method covers up amino characteristics, charge performance and color of the chitosan-oligosaccharide, and broadens the application range of the chitosan-oligosaccharide in the food industry on the basis of ensuring functions of the chitosan-oligosaccharide itself.

Description

technical field [0001] The invention belongs to the technical field of food processing, and in particular relates to a microencapsulated chitosan oligosaccharide and a preparation method and application thereof. Background technique [0002] Oligochitosan is the only positively charged oligosaccharide in nature. It is prepared by deacetylating chitosan. It has a wide range of sources. It has various physiological functions such as lowering blood fat, cholesterol, blood sugar, and inhibiting harmful bacteria. Absorbed and utilized by the body, it can have a greater benefit to human health. Oligochitosan was approved as a new food raw material by the National Health and Family Planning Commission in April 2014, and has broad development prospects in the field of food processing. [0003] Dairy products have become one of the indispensable foods in people's daily life, and have excellent nutritional carrier properties. Adding chitosan oligosaccharides to dairy products is an i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23P10/30A23C3/00A23C9/13A23C9/20A23C19/06A23C19/10A23L33/00A23L33/26A23L3/3562
CPCA23C3/00A23C9/1307A23C9/203A23C19/06A23C19/097A23L3/3562A23V2002/00A23V2400/125A23V2400/123A23V2400/165A23V2400/113A23V2400/231A23V2400/169A23V2400/249A23V2400/51A23V2200/30A23V2200/20A23V2250/5488A23V2250/28A23V2250/511A23V2250/5116A23V2250/70A23V2250/156A23V2250/1872A23V2300/26
Inventor 毛学英纪小敏
Owner CHINA AGRI UNIV
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