FOOD SCIENCE ›› 2008, Vol. 29 ›› Issue (6): 130-132.

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Optimization of Extraction Conditions of Usnic Acid from Cladonia furcata

 GU  Li-Na-·Ba-Ke, SONG  Man-Shu, A  Bu-Du-La-·A-Ba-Si   

  1. 1.School of Animal Sciences, Xinjiang Agricultural University; 2.School of Public Health and Family Medecine, Capital Medical University; 3.College of Life Sciences and Technology, Xinjiang University
  • Online:2008-06-15 Published:2011-08-26

Abstract: In the present study, the optimized extraction conditions of usnic acid in Cladonia furcata are as follows: proportion of sample to solvent 1:10, extraction time 4 h, temperature 60 ℃, and extraction times twice. The melting point scope of acicular yellow-green crystal and absorption peak are consistent with the characteristics of usnic acid reported. The results indicated that Cladonia furcata (Hudson) Schrade is a good extraction material for usnic acid. This will expand raw material for the future development and application of usnic acid, and lay certain research foundation.

Key words: Cladonia furcata (Hudson) Schrader, usnic acid, extraction condition, optimization