Metabolite Profiling of Persimmon Vinegar Residue Extract (Diospyros Kaki) Using Uplc-Ms Method
Abstract
Persimmon (Diospyros kaki L.) is known as a plant with potential use as an herbal remedy to help address various health problems and as a natural source of antioxidants. In the process of producing vinegar, persimmon residue is generally discarded as waste, even though it still contains various valuable metabolite compounds. Therefore, metabolite profiling analysis is needed to identify the chemical components present in the vinegar residue of D. kaki. This study aims to determine the metabolite profile of the 96% ethanol extract of Diospyros kaki (L.) vinegar residue using UPLC-QToF-MS/MS. The thick extract was prepared using 96% ethanol at a ratio of 1:10 (w/v) through the Ultrasound-Assisted Extraction (UAE) method. The extract was then prepared using methanol and DCM before 5 µL was injected into the UPLC-QToF-MS/MS for analysis with the MassLynx 4.1 and ChemSpider software. The analysis showed that the vinegar residue of Diospyros kaki (L.) contains 25 metabolite compounds. The three major compounds detected were Harmane (12.83%), 9-Methylbistetrazolo[1,5-a:5′,1′-c]quinoxaline (8.60%), and Andrographolide (6.28%).
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