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EFFECT OF THE HEAT PUMP DRYING PROCESS TO TOTAL PHENOLIC AND FLAVONOID CONTENT FROM THE LEAF OF ANDROGRAPHIS PANICULATA
Authors: Le Thi My Chau, Nguyen Tan Thanh, Tran Phuong Chi, Nguyen Thi Huyen, Dao Thi Thanh Xuan, Dang Thi Ngoc, Doan Manh Dung, Nguyen Duc Anh
233    1
:     : 494-500
: 1212_2022-B31-TB CNSH Y Dược.pdf
Publishing year: 10/2022
The purpose of this study is to determine the optimal conditions for the heat pump drying process of total phenolic and flavonoid content from leaf of Andrographis paniculata. Experimental arrangement according to the Box -Benhken Design (BBK), with optimal model of the heat pump drying process was built with three factors: drying temperature (X1), drying speed (X2) and drying time (X2), two responses were total flavonoid content (Y1,mgQE/g) and total phenolic content (Y2, mg GAE/g). The optimal parameters of the heat pump drying process were the drying temperature of 50oC, the drying speed of 1.8 m/s and the drying time of 15 hours. Under this condition, the final moisture content of the product is less than 10% the total flavonoid content highest was 15.42±0.12 mgQE/g and the total phenolic content highest was 74.15±0.35 mgGAE/g
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