Studies On The Processing Technology Of Instant Tea Of Polygonatum

Polygonatum of perennial herb in the lily family is used Chinese traditional medicinewhich can use both as food and medicine. The Polygonatum resources is however, the vastmajority Polygonatum are used in Chinese medicine, Its value can not be fully reflected, inorder to expand the range of applications, Its can be developed into the Polygonatumhealth beverage industry. Therefore, According to the modern instant tea technology onthis experiment, Instant Polygonatum tea was finally developed.Chooseing materials in different specific years: principal components analysis ofPolygonatum, The Polygonatum mainly contained the polysaccharides, saponins, aminoacids and other active ingredients. According to component analysis of Polygonatum, themain chemical components of different years Polygonatum were analysed, to compare itsmeasurement. The result showed that the main chemical component of Polygonatumchanged slightly after three years, while Polygonatum growed quickly and effectiveingredients increased obviously Between AD1and2. The result was that Polygonatumharveste at least three years.Extraction technology: taken Polygonatum as material, the effects of extractiontemperature, ratio of solid to solution and extraction time on the extraction of Polygonatumwater extract, polysaccharides and saponin were investigated by using single factor designand orthogonal design. The result showed that extraction temperature and ratio of solid tosolution were more distinct factors affecting the synthetic extraction amount and extractiontime was less by using single factor design; the optimum extraction conditions byorthogonal design analys is as follows: extraction temperature80℃,the ratio of solid tosolution1g:30mL, extraction time3h.Under this condition, the extraction amount ofPolygonatum water extract, polysaccharides and saponin were67.92%,25.82%and6.64%,respectively.Clarify technology: different effect on clarifying by7kinds of clarifying agents wasanalysed respectively. Diatomite, bentonite and chitosan have better clarifying effects.Chitosan could effectively keep the active component such as Polysaccharides andSaponins of Polygonatum water extract. Results showed that the optimum parameters ofchitosan were:3%adding amount, water bath an hour in the condition of50℃by singlefactor and orthogonal experiments. The optimized parameters micro-filtrated clarifyingwas: micro-filtrated extraction liquid by0.5μm aperture of ceramic membrane. These twoclarifying technology could both effectively keep the active component such as Polysaccharides and Saponins of Polygonatum water extract and had simple operationwhich can improve the stability of Polygonatum water extract.Concentrated technology: concentration efficiency by the methods of vacuumevaporation and reverse osmosis membrane were compared, and drew that concentrated bythe reverse osmosis membrane had more advantages, and its effect was better than vacuumevaporation.Drying technology: two ways for drying (spray drying and vacuum freeze-drying)were compared, and indications were: the two methods both had advantage, but,considering factors such as cost of production, spray drying has obvious advantages.Blend: when add green tea or black tea with the proportion of9.7:1,13.6:1,respectively, the final products could show better coordination. Each experimental productare relatively easy to accept the taste, so we can adjust green tea or black tea of addingamount, according to consumer acceptability and cost of production factors.