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The Separation and Extraction of Red Pigment Lonicera Edulis and the Study on the Technology of Its Sustained-release Microencapsulation

Author: TangZuoZuo
Tutor: ZhangZhi
School: Northeast Forestry University
Course: Of Food Science
Keywords: Indigo fruit red pigment Extract Microcapsules Sustained-release kinetics
CLC: TS202.3
Type: Master's thesis
Year: 2010
Downloads: 181
Quote: 1
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Abstract


Lonicera edulis (Lonicera edulis) are Caprifoliaceae plant taxonomy (Caprifoliaceae) Lonicera (Lonicera L.). Proved by clinical trials, cardiovascular and cerebrovascular diseases have a certain effect, and has anti-viral, anti-tumor, improve liver detoxification function. Indigo fruit red pigment extracted from natural wild indigo fruit which belong to the anthocyanins class polyphenolic derivatives, it is widely used in the food, beverage, cosmetic, and higher food and medicinal value. Indigo fruit red pigment is less stable by light, temperature, pH, and other external factors, through the the microencapsulation technique can improve the stability and range of applications. In this study, first experimental study of certain single factor extraction solvent, extractant concentration, solid-liquid ratio, extraction temperature and extraction time of indigo fruit red pigment extraction effect, followed by extraction conditions optimized by orthogonal finalized indigo fruit red pigments optimum extraction conditions: extraction agent acidified ethanol extraction temperature of 50 ° C, extraction time 1.5h, the acidified ethanol concentration of 60%, solid-liquid ratio of 1:15. Indigo fruit red pigment extracted liquid crude refined crude extracts, mentioned the high purity of indigo fruit red pigment by X-5 macroporous resin. Indigo fruit red pigment preparation of microcapsules process orifice prepared by single factor experiment to determine the composite wall material gelatin and sodium alginate composite ratio of 1:2, the optimal concentration of 3% of the wall material, the best core wall material ratio 1:3, of CaCl2 best concentration of 2.5%, the optimum cure time of 50min. On this basis of response surface analysis, optimization microencapsulated optimal conditions were as follows: the ratio of the amount of gelatin and sodium alginate to be added is 1:2, and the wall material and the concentration was 3.22%, the addition amount of the core material and wall material. ratio of 1:3.21, and CaCl2 concentration 2.40%, the embedding rate up to 88.39%. The test proved Lonicera edulis red pigment microencapsulation in the same light, temperature and pH value under the conditions of stability than the pigment microencapsulation. Through simulated gastric and intestinal fluid environment detection microcapsules release process, respectively, with zero-order kinetics, first-order kinetics and Higuchi equation fitting, the results show that the indigo fruit red pigment microcapsules release kinetics in the gastric and intestinal fluids environment intends The aggregate results of the merits of the order are: the Higuchi model equations, a kinetic equation, zero-order kinetics equation. Indigo fruit red pigment microcapsules release in the environment of gastric and intestinal fluids to comply with the the Higuchi model equations skeleton diffusion mechanism.

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CLC: > Industrial Technology > Light industry,handicrafts > Food Industry > General issues > Food ingredients and additives > Food Additives
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