FOOD SCIENCE ›› 2004, Vol. 25 ›› Issue (12): 112-115.

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Studies on Extraction of Hesperidin and Other Active Components from Citrus Peels and Their Antimicrobial Effects

 MA  Qing-Yi, CHEN  Chun-Tao, JING  Xiao-Yan, YUAN  Wei-Xia   

  1. Deptartment of Food and Biological Engineering,Zhengzhou Institute of Light Industry
  • Online:2005-12-15 Published:2011-10-24

Abstract: In this experiment several pigments and hesperidin were extracted from citrus peels, then hesperetin was obtained from hesperidin through acidic hydrolysis. The following activities were confirmed by antimicrobial effect assay:P2, P4 against Es.coli, Sta. Aureus;P1 against Penicllium;hesperidin (2mg/ml, pH4)against Es.coli, Sta. Aureus, Bacillus subtilis,Penicllium, Asper. Niger, Rhizopus and Mucors; hesperetin against Es.coli(weaker). The results revealed that the major antibacterial active components were alcohol-soluble pigments and hesperidin, however, the main antifungal ingredient was petroether-soluble pigment. Only at pH4, the hesperedin with synergistic acid became the major mould-inhibitor, but the hydrolyzed product, hesperitin had not any anti-mould effect.

Key words: citrus peels pigments, hesperidin, hesperitin, antimicrobial activity