Analysis of Antioxidant Activity and Total Phenolic Content in Garcinia mangostana Using Response Surface Methodology

Abstract:

This study investigates the antioxidant activity and total phenolic content on different parts of Garcinia mangostana which are pericarp, leaf, fruit, and seed. 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay was used to determine the antioxidant activity and the total phenolic content was determined by Folin-Ciocalteu method. Response surface method (RSM) was used to determine the effect of the two extraction variables: extraction time (30-120 minutes) and extraction temperature (30-50°C) on yield of total phenolic content and antioxidant activity of different parts of Garcinia mangostana. The significant factors on each experimental design response were identified from the analysis of variance (ANOVA). The best condition for total phenolic content of different parts of Garcinia mangostana was chosen based on the desirability obtained by using extraction temperature of 30°C and extraction time of 60.09 minutes, which resulted in 0.0274 mg GAE/g of total phenolic content in pericarp, 0.2501 mg GAE/g of total phenolic content in leaf, 0.0202 mg GAE/g of total phenolic content in fruit, and 0.0198 mg GAE/g of total phenolic content in seed of Garcinia mangostana. Under this conditions, it was found that the antioxidant activity of pericarp, leaf, fruit, and seed of Garcinia mangostana were 89.45%, 86.58%, 93.33%, and 78.80% of radical scavenging activity, respectively.

• Periodical: Advanced Materials Research (Volume 1113)
• Pages: 217-222
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1113.217
• Online since: July 2015
• Authors: Ummi Kalthum Ibrahim*, Amira Sofea Mahamad Husin, Ruzitah Mohd Salleh
• Keywords: Antioxidant, Garcinia mangostana, Optimization, Response Surface Methodology (RSM), Total Phenolic Content

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