Research on hydrolysis of hea residue
Abstract：With the development of tea beverage, many large enterprises began study on processing and extracting of tea, along with which is the accumulation of a large number of tea residue. In this article, dilute sulfuric acid and acetic acid is used in the black tea residue's hydrolysis, using lichens phenol method and 3,5 - dinitrosalicylic acid (DNS method) on the determination of the pentose and reducing sugar in tea residue. The author studied the effect of temperature, time, sulfuric acid concentration, solid-liquid ratio on the hydrolysis results. While acetic acid and sulfuric acid hydrolysis were compared, the optimum temperature is 121 ℃, the hydrolysis time is 60min, acid concentration of 3.0%, acid and tea residue of the solid-liquid ratio of 20g: 100ml. At temperature of 60 ℃, the efficiency of tea residue deproteinization hydrolysis in alkaline is better.
