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Microencapsulated DHA micro-algal oil containing antioxidant peptides and preparation method thereof

An antioxidant peptide and microencapsulation technology, which is applied in the direction of antimicrobial preservation of food ingredients, food shaping, and food ingredient functions, etc., can solve food safety problems, high use requirements, etc., and achieve good tissue status, Improves stability and contributes to oxidation stability

Inactive Publication Date: 2017-05-10
NORTHEAST AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] There are many types of antioxidants, but chemically synthesized antioxidants such as BHA, BHT, TBHT, etc., although they can inhibit the oxidation of oils, they will also bring food safety problems, so the requirements for their use are getting higher and higher

Method used

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  • Microencapsulated DHA micro-algal oil containing antioxidant peptides and preparation method thereof
  • Microencapsulated DHA micro-algal oil containing antioxidant peptides and preparation method thereof
  • Microencapsulated DHA micro-algal oil containing antioxidant peptides and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0024] Concrete preparation method comprises the following steps:

[0025] (1) Prepare whey protein concentrate into a 3% (w / v) solution, add DHA microalgae oil according to the core wall mass ratio of 1:3, mix at 800rpm / min, and homogenize twice under 40Mpa high pressure , so that it is completely dispersed in the solution;

[0026] (2) After the homogeneous solution is cooled, the antioxidant peptide is added to the homogenized mixed solution at a ratio of 0.1%, and mixed;

[0027] (3) Prepare a mixed emulsion, mix the gum arabic solution and the solution containing the antioxidant peptide at a mass ratio of 1:3, and prepare the gum arabic into a 3% (w / v) solution, and use 2% lemon The acid adjusts the pH value to 3.75, causing complex coagulation reaction to occur;

[0028] (4) Lowering the adjusted pH value of the solution to 5° C. at a rate of 5° C. per hour under ice bath conditions, causing the microcapsules to settle and form wet capsules;

[0029] (5) The mixture o...

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Abstract

The invention relates to the field of micro-algal oil DHA microencapsulation processing, specifically to microencapsulated DHA micro-algal oil containing antioxidant peptides and a preparation method thereof. Whey protein concentrate and Arabic gum serve as microcapsule wall materials, the antioxidant peptides generated by fermentation of natural whey protein are added into the DHA micro-algal oil, a complex-coacervation method and a spraying drying method are utilized to prepare the microencapsulated DHA micro-algal oil containing the antioxidant peptides, and the shortcoming of low oxidation stability caused by the fact that the DHA micro-algal oil oxidizes easily is overcome. After the prepared DHA micro-algal oil is stored for 25 days, the peroxide value of the DHA micro-algal oil is reduced by 8 meq / kg or above compared with when no DHA micro-algal oil without the antioxidant peptides, and the microencapsulated DHA micro-algal oil is high in oxidation stability and high in sensory value. The prepared DHA micro-algal oil is wide in applied range, can serve as functional factors to be applied to industries such as medicine, food and feed, particularly to infant foods having strict regulations on additives, and the microencapsulated DHA micro-algal oil is favorable for improving memory and enhancing brain development and the like.

Description

technical field [0001] The invention relates to the effect of adding antioxidant peptides produced by fermented whey protein into DHA microalgae oil microcapsules as antioxidants, its oxidation stability and a production method, and belongs to the technical field of microcapsule processing. Background technique [0002] DHA has obvious prevention and treatment effects in delaying aging, preventing neurological diseases, such as preventing senile dementia, slowing down the condition of bipolar disorder, anti-cancer, suppressing tumors, preventing osteoporosis, preventing diabetes and anti-inflammation. Many studies at home and abroad have proved that DHA has superior physiological regulation functions in many aspects. DHA can ensure the healthy development of infants, promote brain development of infants, and improve memory. Microalgae oil is considered to be one of the main sources of DHA, and microalgae oil is prone to oxidation, which will affect product flavor and qualit...

Claims

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Application Information

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IPC IPC(8): A23L33/115A23L33/18A23L33/19A23P10/30
CPCA23V2002/00A23V2200/10A23V2200/302A23V2250/1868A23V2250/54252A23V2250/55
Inventor 李晓东王春潮刘璐曲秀伟王立娜王海霞张秀秀
Owner NORTHEAST AGRICULTURAL UNIVERSITY
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