ABSTRACT

In the present study, total phenolic and flavonoid contents in the methanol extracts of kernels obtained from the selected fruits such as Mangifera indica, Citrus sinensis, Citrus limetta, Punica granatum, and Carica papaya commonly marketed in India and their antioxidant properties were studied. Total phenolic and flavonoid contents in kernel extracts (measures in mg gallic acid equivalent (GAE)/g fresh weight and mg quercetin equivalent (QE)/g fresh weight, respectively) varied significantly with species (p <0.05) and ranged between 2.35–7.79 and 0.16–1.17, respectively. Antioxidant activities in kernel extract in terms of 2, 2-Diphenyl-1-picrylhydrazyl, 2, 2ʹ-Azino-bis 3-ethylbenzothiazoline-6-sulfonic acid and ferric reducing antioxidant power (expressed in µM ascorbic acid equivalent (AAE)/g fresh weight) was found maximum in M. indica (102.8, 182.3 and 48.8, respectively) among the tested fruits. Cluster analysis based on biochemical attributes indicated that the kernel of M. indica is biochemically different from other kernels. Thus the present study concludes that the kernel of M. indica should be scaled up for industrial utilization as it possesses significantly higher antioxidant activities as compared to other kernels.

摘要

在本研究中，研究了从印度芒果（Mangifera indica），中华柑桔（Citrus sinensis），柑桔柑桔（Citrus limetta），石榴（Punica granatum）和番木瓜（Carica papaya）等精选水果中提取的籽仁的甲醇提取物中的总酚和类黄酮含量及其抗氧化性能。籽粒中酚和类黄酮的总含量（分别以毫克没食子酸当量（GAE）/克鲜重和毫克槲皮素当量（QE）/克鲜重计）随物种的不同而有显着差异（p<0.05），范围分别在2.35–7.79和0.16–1.17之间。谷粒提取物中的抗氧化剂活性包括2，2-二苯基-1-吡啶并肼，2，2ʹ-叠氮基双3-乙基苯并噻唑啉-6-磺酸和三价铁还原抗氧化剂的能力（以µM抗坏血酸当量（AAE）/ g表示）在测试的果实中，印度fruits（M。indica ）的最大鲜重（分别为102.8、182.3和48.8）最大。基于生化特性的聚类分析表明，印度M麦的仁在生化上与其他仁不同。因此，本研究得出结论，由于与其他麦粒相比，其具有明显更高的抗氧化活性，因此应将印度麦粒扩大到工业应用规模。