Determination of chemical constituents in processed [Japanese] green tea by near infrared analysis
1990
Ikegaya, K. (National Research Inst. of Vegetables, Ornamental Plants and Tea, Kanaya, Shizuoka (Japan))
Applicability of the near infrared reflectance (NIR) spectroscopy method was examined to estimate total nitrogen, caffeine, total free amino acids, theanine and tannin (catechines) in processed green tea (Sencha in Japanese) as a substitute for the conventional time-consuming method commonly used in Japan. It was confirmed that these chemical consituents of green tea could be estimated accurately by the (NIR) spectroscopy method
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