Welcome to Chinese Journal of Tropical Crops,

Chinese Journal of Tropical Crops ›› 2019, Vol. 40 ›› Issue (7): 1367-1372.DOI: 10.3969/j.issn.1000-2561.2019.07.017

• Agricultural Product Processing, Preservation, Storage, Analysis and Detection • Previous Articles     Next Articles

Antioxidant Activity of Methanol Extract from Melaleuca bracteata Leaves

WU Yingxiang1,YU Xuefang2,ZHAN Xingdui3,LI Xinxin2,YANG Chao2,ZONG Weixun1,LI Yongyu2,*()   

  1. 1. Qingyuan Agricultural Science and Technology Extension Service Center, Qingyuan, Guangdong 511518, China
    2. College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
    3. Sanming Agricultural Market and Economic Information Workstation, Sanming, Fujian 365000, China
  • Received:2018-08-03 Revised:2019-02-16 Online:2019-07-25 Published:2019-08-01
  • Contact: LI Yongyu

Abstract:

In order to explore the antioxidant activity of the methanol extract from the leaves of M. bracteata, the in vitro antioxidant activities and the total phenols of the methanol extract and its different polarity fractions were determined in this study. The n-butyl alcohol fraction showed the highest total phenols content (453.75±0.75) mg/g. The methanol extract and its n-butyl alcohol fraction had better scavenging effects than VC on ABTS + radical. Reducing power followed the order of VC>n-butyl alcohol>methanol extract>water>ethyl acetate>BHT>petroleum ether fractions. The N-butyl alcohol and ethyl acetate fractions had better scavenging effect on DPPH radical than the methanol extract and water fractions, and the petroleum ether fraction had the weakest effect. In addition, positive correlation was existed between the total phenols content and the antioxidant activities of different polarity fractions. In addition to the petroleum ether fraction, methanol extract and its different polarity fractions showed excellent antioxidant activities, which could be used as a good natural antioxidant activity material.

Key words: Melaleuca bracteata leaves, alcohol extract, total polyphenol, antioxidant activity

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