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Study on the Microwave-assisted Extraction Total Flavonoids of Tatary Buckwheat Shell and Its Antioxidation Capacity(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2014年20期
Page:
144-149
Research Field:
Publishing date:

Info

Title:
Study on the Microwave-assisted Extraction Total Flavonoids of Tatary Buckwheat Shell and Its Antioxidation Capacity
Author(s):
WEI Zeng-yun1; ZHANG Hai-rong2; CHEN Jin-e2; JIA Jun1; DONG Fang-juan1; BO Yi-lan1; LI Jing-yu1
1.College of Xinzhou Occupation Technology,Xinzhou,Shanxi 034000;
2.Institute of Biochemical Analysis,Xinzhou Teachers’ University,Xinzhou,Shanxi 034000
Keywords:
tatary buckwheat shell; response surface analysis method; total flavonoids; microwave-assisted extraction; antioxidation capacity
PACS:
TS 201.2
DOI:
-
Abstract:
Taking dry powder of tatary buckwheat shell from Lingqiu of Shanxi as malerial,the total flavonoids of tatary buckwheat shell was studied with the microwave-assisted extraction technology.The quadratic polynomial regression equation prediction model was obtained by using the Box-Behnken central composite test and response surface analysis based on the single factor experiments,such as different alcohol concentration (A),time (B),liquid-solid ratio (C),and the microwave power(D).The free radical scavenging rates of the flavonoids of tatary buckwheat shell using DPPH was tested with tert-butyl hydroquinone as the contrast.The results showed that the optimal conditions of microwave-assisted extraction of the total flavonoids were as follows：57.54% of solvent concentration,time of 41.09 s,65.4∶1 mL/g of the ratio of liquid to solid,power of 264.16 W,the yield of total flavonoids was up to 1.9800%,the predictive was of 2.004%.The flavonoids of tatary buckwheat shell had a strong antioxidant effect,the scavenging rates of tatary buckwheat shell flavonoids was up to 50% to DPPH,C50% of tatary buckwheat shell flavonoids were at 0.96 μg/mL with ultrasonic method,1.40 μg/mL with microwave-assisted extraction,1.27 μg/mL with soxhlet extraction，and 2.40 μg/mL of the tert-butyl hydroquinone(CK),respectively.The tatary buckwheat shell flavonoids was a promising natural antioxidant.

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Last Update: 2014-11-21