Optimization of Microwave Extraction of Total Phenols from Magnolia Bark by Orthogonal Array Design

doi:10.7506/spkx1002-6630-201308016

Abstract

Abstract: Microwave radial extraction method was applied to extract total phenols from magnolia bark using extraction rate of total phenols as evaluation index. The effects of extraction conditions on extraction rate of total phenols from magnolia bark were evaluated by single factor and orthogonal tests. The optimal extraction process parameters include 70% alcohol as extraction solvent, microwave radial time of 6 min, microwave power of 40% (240 W), and material-liquid ratio of 1:20 (g/mL). Under the optimal extraction conditions, the extraction rate of total phenols was up to 6.34%.

Key words: orthogonal test, magnolia bark, microwave method, total phenols

CLC Number:

TS201.1

ZHONG Ping，WANG Pin-pin. Optimization of Microwave Extraction of Total Phenols from Magnolia Bark by Orthogonal Array Design[J]. FOOD SCIENCE, 2013, 34(8): 82-84.

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