Modified coffee, method of roasting coffee bean, coffee-like supplement and auxiliary food
A roasting method and coffee bean technology are applied in the field of improving coffee, and can solve the problems of poor flavor, delicious components, and loss of flavor components in decaffeinated coffee products.
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[0289] HPLC analysis method of niacin contained in roasted coffee beans
[0290] The Maillard reaction product, which is the basis of the aroma of coffee products, is produced at a roasting temperature of 200°C. Then, the most suitable roasting time for thermally converting the fenugreek base in the green beans into niacin is determined to be 40 minutes using Formula 1. . Under these conditions, 200 g of green coffee beans (produced in Brazil) were roasted and ground with a coffee grinder for 20 seconds. The obtained 10g powder was immersed in 30ml hot water. Centrifugation was carried out at 3000 rpm for 5 minutes, and 1 ml of the supernatant was poured into Sep-Pak PlusCl8 (trade name, manufactured by Soyota Co., Ltd.), and eluted with 3 ml of acetonitrile / pure water (7 / 93). The 5 μl eluate was analyzed by HPLC. The experimental conditions are as follows. A liquid feeding pump (trade name BIP-1 / manufactured by JASCO Corporation), a multi-wavelength ultraviolet ...
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