Effect of particle size on the phenolic and flavonoid contents of Amla (Indian gooseberry) extract

Abstract

Amla (Indian gooseberry) is a traditional medicinal plant that contains phenolic and flavonoid compounds which can treat gastric ailments, diabetic, as an antioxidant and antimicrobial. This study investigated the effects of particle size on the yield, phenolic and flavonoid contents of amla extract. Fresh amla was oven-dried and ground into powder to obtain samples with different particle sizes. Extraction of phenolic and flavonoid contents on amla was carried out by maceration method using ethanol 96%. The phenolic and flavonoid contents of amla extract were analyzed quantitatively using spectrophotometry UV-Vis. The highest yield (31.43%) of amla extract was found at particle sizes between 0.250-0.149 mm. The results appeared that diverse particle size had a major impact on phenolic and flavonoid content. The highest phenolic content of 289.365 mg GAE/g and flavonoid content of 7.476 mg QE/g were obtained at particle sizes between 0.250-0.149 mm.