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Ethanol‐free extraction of resveratrol and its glycoside from Japanese knotweed rhizome by liquefied dimethyl ether without pretreatments
Author(s) -
Kanda Hideki,
Oishi Kazuma,
Machmudah Siti,
Goto Motonobu
Publication year - 2020
Publication title -
asia‐pacific journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.348
H-Index - 35
eISSN - 1932-2143
pISSN - 1932-2135
DOI - 10.1002/apj.2600
Subject(s) - extraction (chemistry) , chemistry , dimethyl ether , polyphenol , chromatography , ethanol , resveratrol , glycoside , water extraction , raw material , ether , rhizome , solvent , botany , organic chemistry , methanol , biochemistry , biology , antioxidant
Herein, we carried out the extraction of polyphenol resveratrol and its glycoside (piceid) from raw Japanese knotweed via a simple method, employing dimethyl ether (DME) as the solvent. With DME extraction, the conventional drying and cell wall disruption steps can be left out. As a result, more resveratrol and piceid were obtained in DME extraction than in conventional ethanol extraction. Because the Hansen solubility parameters of DME are closer to ethanol than to water, it allowed us to extract resveratrol and piceid from raw Japanese knotweed, unlike water. Simultaneously, 83.5% of the initial water and 213 mg/g dry of organic extracts were extracted from raw Japanese knotweed. As DME extraction does not involve drying and grinding of the decomposed antioxidants, it is highly suitable for extracting antioxidants.