A Change of Chemical Components and Effect on Anti-allergic Activity in 'Benifuuki' Green Tea Which was Produced With Low Caffeine Processing Machine

概要

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The low caffeine processing machine that we developed to have infants, a pregnant woman, and a senior citizen drink 'Benifuuki' green tea was able to decrease a caffeine content more than 50% without reducing anti-allergic epigallocatechin-3-<I>O</I>- (3-<I>O</I>-methyl) gallate (EGCG3 Me) content by processing to spray a heated water shower of 95 degrees Celsius on plucked new tea shoots more than 90 seconds. We installed this processing machine before primary tea rolling dryer at a normal processed tea production line, and put plucked new shoot slit in processing machine while adjusting tea leaf to equal thickness and atomized water of normal temperature and cooled off after having sprayed heated water showers more than 95 degrees Celsius while transferring tea leaves with a net conveyer. About 1.8 times establishment areas are necessary in comparison with conventional rotary net drum tea steaming machine (800K) . Quantity of circulation heated water which it is necessary is about 360, 00 L/hr, and include water injection and a rise and a loss share of green leaf temperature, and the heat capacity that it is necessary is approximately 350, 000 kcal/hr. In addition, by this processing, anti-allergic activity of 'Benifuuki' green tea did not reduce.
日本食品工学会の論文