Abstract:1.54
%和0.58%。The effect of different fixing methods, drying temperature and duration on the content of chlorogenic acid and flavonoids in Eucommia green tea were measured using high performance liquid chromatography and spectrophotometry respectively. The results show that chlorogenic acid and total flavonoid content decrease significantly after fixing. Microwave fixing was the best fixing mode, next came the dry fixing and steam fixing, and the largest decline of the activity contents was caused by blanching of boiling water. The optimum microwave fixing conditions were 800W and 1min. The single factor and quadratic general rotation design experiments suggested that roast temperature and duration affect the active ingredient obviously. After drying, the chlorogenic acid content decrease, and the total flavonoid content increase, but total flavonoid content decrease when the temperature exceeds 200℃. When the duration of drying was 9 minutes and the temperature was 130℃, the content of chlorogenic acid and the flavonoid reached maximum of 1.54% and 0.58% respectively. |
Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.
|