Microwave Heating Employed on the Tea Manufacture

Abstract

Abstract: Microwave heating is applicable to green tea manufacture.A microwave equipment for the manufacture of famous and nice quality green tea with microwave power unit of maximum 6 kW(at 2450MHz)and a 42cm wide teflon-coated grass fiber belt conveyor was studied.The speed of the belt could be adjusted. In the period of green tea processing, the time of microwave used to inhibit enzyme was about 2min and each step of the two-step microwave drying was about 5min. The quality of tea of microwave processed was superior to that of conventional processing. The chemical compound of tea processed by microwave contained more amino acid, caffeine and eluote than those of conventional processing.

Key words: Microwave heating , Green tea , Inhibiting-enzyme , Dry

LIU Xin, JIN Shou-Zhen, FU Shang-Wen, LU Zhen-Hui. Microwave Heating Employed on the Tea Manufacture[J]. FOOD SCIENCE, 2002, 23(10): 72-75.

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Microwave Heating Employed on the Tea Manufacture

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