青砖茶水提多糖与茶渣碱提多糖综合提取工艺优化及乳液负载体系研究

Abstract

Abstract: Qingzhuan tea is a regional iconic product of Hubei Province. Although the yield is high, its market value needs to be improved. Tea polysaccharide, as a natural active substance with high content in crude old tea, has been proved to have a variety of biological activities. Therefore, it has unique advantages to extract tea polysaccharide from Qingzhuan tea. In this study, the response surface method was used to optimize the two extraction processes of water extraction and alkali extraction, and two different types of tea polysaccharides were obtained. Among them, the alkali extraction of tea polysaccharide is obtained by further extraction from tea residue after water extraction, so as to improve the utilization rate of raw materials. Subsequently, the physicochemical properties (such as molecular weight, antioxidant activity, monosaccharide composition and particle size potential) of these two tea polysaccharides were compared and analyzed, and their application potential in emulsion carriers was explored. The stability and loading effect of the emulsion during ten days of storage were investigated.

CLC Number:

GUO Yu¹, XIAO Liuyu², DU Qiuyi², TIAN Ye³, HAN Yu². Study on Comprehensive Extraction Process Optimization and Emulsion Loading System of Water-extracted Polysaccharides from Qingzhuan Tea and Alkali-extracted Polysaccharides from Tea Residue[J]. Journal of Tea Science.

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Study on Comprehensive Extraction Process Optimization and Emulsion Loading System of Water-extracted Polysaccharides from Qingzhuan Tea and Alkali-extracted Polysaccharides from Tea Residue

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