期刊
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
卷 60, 期 47, 页码 11832-11838出版社
AMER CHEMICAL SOC
DOI: 10.1021/jf303736h
关键词
vitamin C; phenolics; antioxidant activity; Mangifera; fruit fleshes; mangiferin
资金
- Universiti Sains Malaysia [1001/PBIOLOGI/813O49]
Mature-green and ripe fleshes from 12 samples of Mangifera were selected for this study. The mature-green fleshes were found to have higher vitamin C contents than the ripe fleshes. However, not all higher total or individual phenolic contents were measured from the mature-green fleshes. The highest contents of vitamin C and total phenolics were respectively measured from the aqueous extracts of mature-green (255.86 +/- 12.98 mu g AAE/g sample) and ripe (142.57 +/- 0.38 mu g GAE/g sample) fleshes of M. petandra cv. Pauh. Gallic acid and mangiferin were detected in all aqueous extracts. The extracts of the mature-green flesh of M. indica cv. Chokanan and the ripe flesh of M. indica cv. Siku Raja, respectively, exhibited the greatest 1,1-dipheny1-2-picrylhydrazyl radical (DPPH)-scavenging activity (408.21 +/- 5.37 mu g TE/g sample) and metal chelating activity (93.68 +/- 0.74%). The combined or potentiation effects of the moderate vitamin C, gallic acid, and mangiferin contents in both extracts may be responsible for the activities. The highest mangiferin content (31.72 +/- 2.57 mu g/g sample) in the mature-green M. caesia (Binjai) could be the major contributor to its highest FRAP activity (868.29 +/- 2.71 mu g TE/g sample). This paper reports apparently the first comparative study highlighting the antioxidant activities of these fruit fleshes.
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