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Study on Production Proanthocyanidins by Membrane Technology and Microwave-Assisted Water Extraction Method

Author: ChenYing
Tutor: WanDuanJi
School: Hubei University of Technology
Course: Chemical processes
Keywords: Proanthocyanidins Membrane Technology Microwave Cleaner Production
CLC: R284.1
Type: Master's thesis
Year: 2009
Downloads: 52
Quote: 1
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Abstract


Of this research project is the use of membrane technology integrated microwave-assisted water extraction, the winery waste grape seed extract isolated, purified and refined, and the preparation of proanthocyanidins cleaner production processes. The research identified proanthocyanidins method by the the film impurity concentration process and parameters, proanthocyanidins macroporous resin model and adsorption in the refining process, elution conditions. The proanthocyanidins characterization Folin-Ciocalteau method. Experimental standard curve correlation coefficient R2 = 0.9948, the repeated experiment a standard deviation of 0.001, the relative standard deviation was 0.15%, the result of high accuracy, and reliability. The proanthocyanidins process studies to determine the microwave-assisted water extraction to extract proanthocyanidins from grape seeds, extraction effect, no pollution. Various factors on the extraction of procyanidins single factor and orthogonal test to determine the net charge of the process parameters, optimum conditions proanthocyanidins was 94.28%. 3 on the the procyanidins extracted liquid film impurity, the concentration process were studied, discussed the effect of the type of the separation membrane to extract the impurity, and concentrated, identified by the ultrafiltration membrane Ⅰ impurity, the process of reverse osmosis and concentrated. The separation membrane flux during operation, the average flux of ultrafiltration membranes and reverse osmosis 88.5L · h-1 · m-2 and 9.2 L · h-1 · m-2, the stable operation of the whole process. Cleaning of the organic film used in the experiments carried out a study to determine the method of preparation of chemical cleaning agents and cleaning of working conditions. The experiments show that the use of the composite cleaning agent for cleaning the contaminated film is preferably restored to the level close to the new film, so that the pure water flux under the experimental conditions. Reverse osmosis concentrate macroporous resin refined experimental study to determine the optimum process route. This process has been proanthocyanidins product purity of 97.65%, in line with market standards. The entire process of the subject using the water as the extraction solvent, to avoid the use of organic solvents, reducing costs, and improve the safety of the product; microwave-assisted water mention, significantly improve the extraction rate of procyanidins, shorten the extraction time; film technology on the original anthocyanins extract the impurity, and concentrated, to save power consumption, simplify the production process, and significantly improve the purity and yield of the product, with the extractant water recycling; using a macroporous resin was purified, to further improve the purity of the product . The whole process does not produce waste pollution, pollution control at the source, and truly clean production, in line with the concept of circular economy and sustainable development strategies in response to the National Cleaner Production Promotion Law.

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CLC: > Medicine, health > Chinese Medicine > Of Pharmacy > Traditional Chinese medicine chemical > Chemical analysis and identification
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