Validation of LC for the Determination of a-Mangostin in Mangosteen Peel Extract: A Tool for Quality Assessment of Garcinia mangostana L.

摘要

Mangosteen, Garcinia mangostana L, is known as the "Queen of fruits" and can be cultivated in the tropical rainforest such as Malaysia, Indonesia, and Thailand. Compounds isolated from the fruit peel of mangosteen contain abundant xanthones (especially a-mangostin). It has been used as traditional medicine such as anti-inflammatory and antibacterial and is popularly applied to cosmetic and pharmaceutical products. However, there is little information for quality and quantity determination of а_mangostin in mangosteen. Thus, the aim of this study was to set up a validated and stability-indicated isocratic reverse-phase high-performance liquid chromatographic (HPLC) method for quality control and quantity determination of a-mangostin from mangosteen peel extract. The assay was fully validated and shown to be linear (r~2 > 0.999), sensitive (LOD = 0.02 μg/mL and LOQ = 0.08 μg/mL), accurate (intra-day was between 98.1-100.8%, inter-day was between 90.0-101.3%), precise (intra-day variation __ 1.8%, inter-day variation __ 4.3%), specific, and with good recovery. Total analysis was __ 8 min. The finalized method is also a stability-indicating assay. The present method should be useful for analytical research and for routine quality control analysis of χmangostin in mangosteen peel extract and products of mangosteen.