Abstract—Mango peels, wastes generated from fruit can processing, are a good source of functional ingredients such as phenolic compounds that has potential antioxidant properties. This study investigated the extraction of phenolic compounds from mango peels using subcritical water extraction (SCW). Experiments were performed in a batch laboratory-built equipment (50 ml volume of vessel) immersed in oil bath and temperatures ranging from 160 to 220 °C, extraction time of 30 to 120 min., material particle sizes of 30 to 70 mesh, solid to water ratio of 1:10 to 1:50 and pH of solution 2 to 8. The highest phenolic content was obtained 50.25 mg GAE / g DW at the condition as follows: 180 °C, 90 min, solid to water ratio as 1:40 and pH 4. The amount of phenolic compounds from mango peels using SCW extraction was higher than that using soxhlet extraction at extraction time 60 min as 1.5 times. SCW extraction might be an alternative green technology for phenolic compounds extraction from agricultural wastes which substitute conventional method using organic solvents.
Index Terms—Subcritical water extraction, phenolic compounds, mango peels.
The authors are with the Mahidol University, Faculty of Engineering, Department of Chemical Engineering, Salaya, Thailand 73170 (e-mail: SRWT_001@ hotmail.com, mohammand.esh@ mahidol.ac.th, nuttawan.yos@ mahidol.ac.th).
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Cite:S. Tunchaiyaphum, M. N. Eshtiaghi, and N. Yoswathana, "Extraction of Bioactive Compounds from Mango Peels Using Green Technology," International Journal of Chemical Engineering and Applications vol. 4, no. 4 pp. 194-198, 2013.
