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Ultrasound Assisted Extraction (UAE) has been used for the extraction of mangosteen peel (Garcinia mangostana L.) in producing xanton. Mangosteen peel extraction with UAE has been carried out to determine the effect of frequency, temperature, and time of sonication on the xanton content. The parameters controlled are frequency (20 - 40 kHz), temperature (25 - 35oC), and sonication time (20 - 40 minutes). The solvent used in the extraction was methanol with a ratio of mangosteen peel: solvent = 1: 10 and analysis of xanton content in the extraction. Extraction results showed that the content of xanthones from the extraction results of mangosteen (Gracinia mangostana L.) peel with UAE had optimum values at a frequency of 40 kHz, temperature of 35oC, and sonication time of 30 minutes. At the same frequency, temperature, and time, conventionally showed xanthones content of mangosteen rind extract of 93 ppm. The results show that the extraction yield using UAE is greater than that of conventional methods. From the results of this experiment, it can be concluded that the use of the UAE in the xanthones extraction process of mangosteen peel (Gracinia mangostana L.) is more optimal when compared to conventional methods.

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Effect of frequency, temperature, and time of sonication on xanton content of mangosteen (Garcinia mangostana L.) peel extract through ultrasound assisted extraction