Radical scavenging activity in fruit extracts.
Surinrut P., Kaewsutthi S., Surakarnkul R.
Author Affiliation: Department of Biochemistry, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok 10330, Thailand.
: 201-203
Abstract : The polyphenolic content and 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity of extracts obtained from 12 Thai fruits, i.e. grape, mulberry (Morus alba), mango, carambola, guava, lichee [lychee], mangosteen, sour orange, pomelo [pummelo], pawpaw, rose apple (Eugenia javanica) and jackfruit, were studied. We found that grape skins, mulberries, mango, carambola, guava and lichee possess strong activity to scavenge the DPPH radical (IC50 from 1.10 to 9.60 mg/ml). Moderate antioxidant activity was found in mangosteen, orange, pomelo, grapes and pawpaw (IC50 from 11.18 to 32.80 mg/ml). Low antioxidant activity (IC50 from 50.62 to 110.46 mg/ml) was found in sour orange, grape, rose apple and jackfruit.