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- Title
Nutritional Content and in vitro Antioxidant Potential of Garcinia atroviridis (Asam gelugor) Leaves and Fruits.
- Authors
Nursakinah I.; Zulkhairi H. A.; Norhafizah M.; Hasnah B.; Zamree Md. S.; Farrah Shafeera I.; Razif D.; Hamzah Fansuri H.
- Abstract
Introduction: The objective of this study was to determine antioxidant potential of Garcinia atroviridis leaves and fruits extracts in vitro. Methods: Antioxidant activity was assessed using 1,1-diphenyl-2-picrylhydrazyl (DPPH) and ferric reducing antioxidant power (FRAP) assays. Total phenolic content (TPC) of the extracts was estimated as gallic acid equivalent by Folin-Ciocalteau method. Proximate analysis was determined based on the Association of Official Analytical Chemists (AOAC) procedures. Results: Garcinia atroviridis leaves extracted at 100°C/15 min demonstrated the highest TPC value (21.21 ± 0.28 mg GAE/mg) and was significantly different (p<0.05) from that of leaves extracted at 60°C/6 h and 40°C/12 h. On the other hand, the fruit extracted at 60°C/6 h showed the highest TPC value (16.23 ± 0.18 mg GAE/mg) (p<0.05) compared to the fruit extracted at 40°C/12 h and 100°C/15 h respectively. The antioxidant activities of both samples were positively correlated with the TPC values based on DPPH-radical-scavenging activity and ferric reducing power estimation. Garcinia atroviridis leaf extract contained significantly higher proteins, carbohydrate and ash contents (2.16% ± 0.08; 15.98% ± 0.12 and 0.72% ± 0.07 respectively) than its fruit extract (0.46% ± 0.08, 8.64% ± 0.06 and 0.15% ± 0.06) respectively). The energy content was also found to be higher in the leaf (73.64% ± 2.15) compared to the fruit (38.38% ± 1.72) (p<0.05). Conclusion: The findings indicate that G. atroviridis leaves and fruits have potential for use as a source of natural antioxidants and nutrients for therapeutic purposes against free radical mediated health conditions.
- Publication
Malaysian Journal of Nutrition, 2012, Vol 18, Issue 3, p363
- ISSN
1394-035X
- Publication type
Academic Journal