一些孟加拉当地产水果的抗氧化活性

Antioxidant Activities of some Local Bangladeshi Fruits (Artocarpus heterophyllus, Annona squamosa, Terminalia bellirica, Syzygium samarangense, Averrhoa carambola and Olea europa)

摘要:

研究了A. heterophyllus, A. squamosa, T. bellirica, S. samarangense, A. carambola and O. europa 水果的抗氧化活性。首先将这些成熟的水果切成小片，然后用日光晒干，最后用研磨器磨成粉末。这些水果粉末用99.99%的乙醇进行乙醇提取。这些提取物的活性通过其清除稳定的1, 1-diphenyl-2-picrylhydrazyl (DPPH)自由基的能力进行测定。实验结果表明，所有A. heterophyllus, A. squamosa, T. bellirica, S. samarangense, A. carambola and O. europa这些水果的乙醇提取物都具有抗氧化活性，这些水果的乙醇提取物的的IC₅₀值分别是410, 250, 34, 200, 30 和76μg/mL。其中A. carambola具有最高的抗氧化活性，其次是T. bellirica, O. europa, S. samarangense, A. squamosa 和 A. heterophyllus 。结果表明A. carambola, T. bellirica 和 O. europa对人体健康是非常有益的。

关键词:抗氧化剂，抗坏血酸，乙醇提取物，自由基，紫外分光光度计

Abstract:

In the present study, antioxidant activities of the fruits of A. heterophyllus, A. squamosa, T. bellirica, S. samarangense,A. carambola and O. europa were investigated. For this, at first matured fruits of them were sliced into small pieces and dried in the sun and finally crushed in a grinder to make powder. Ethanolic extracts of fruit powder were prepared using 99.99% ethanol. The antioxidative activities of these extracts were determined according to their abilities of scavenging 1, 1-diphenyl-2-picrylhydrazyl (DPPH) free radical .It was demonstrated that all the ethanolic extracts of A. heterophyllus, A. squamosa, T. bellirica, S. samarangense,A. carambola and O. europashowed antioxidant activities. The IC50 of the ethanolic extracts of A. heterophyllus, A. squamosa, T. bellirica, S. samarangense,A. carambola and O. europa were 410, 250, 34, 200, 30 and 76μg/mL, respectively. Among them, A. carambola showed the highest antioxidant activities followed by T. bellirica, O. europa, S. samarangense, A. squamosa and A. heterophyllus indicating that fruits of A. carambola, T. bellirica and O. europa are very beneficial to human health.

Key words:antioxidant, ascorbic acid, ethanolic extracts, free radicals, UV spectrophotometer