Microwave-assisted Extraction of Aloin from Fresh Aloe Leaves

Abstract

Abstract: A detail procedure for extracting aloin from fresh aloe leaves was developed by using an obturated microwave-assisted extraction (MAE) device with a pressure controlling unit. The mechanism of the microwave-assisted extraction was studied by transmission electronic micrography. The effects of the solvent sort, solvent, concentration, radiation time and microwave power were discussed in orthogonal experiments. The results show that the optimized extraction parameters were ethanol-water(volume ratio is 70∶30), radiation time 4 min, microwave power 340 W. Compared with Soxhlet extraction and ultrosonic extraction, microwave extraction is a rapid method with a higher yield and less solvent consumption.

Key words: Microwave-assisted extraction, Aloe, Aloin, HPLC

CLC Number:

O657.7

TrendMD:

YANG Yi, HOU Xiang-Yan, GUO Zhen-Ku. Microwave-assisted Extraction of Aloin from Fresh Aloe Leaves[J]. Chem. J. Chinese Universities, 2005, 26(9): 1623.

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Microwave-assisted Extraction of Aloin from Fresh Aloe Leaves

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