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dc.contributor.authorPreaploy Hong-inen_US
dc.contributor.authorWaranya Neimkhumen_US
dc.contributor.authorChanun Punyoyaien_US
dc.contributor.authorSuwannee Sriyaben_US
dc.contributor.authorWantida Chaiyanaen_US
dc.description.abstractThis study is the first to compare the chemical compositions and biological activities of a conventional dried Dimocarpus longan with a novel black D. longan that underwent a thermal ageing process. Pericarp, aril, and seed of both D. longan were macerated in 95% v/v ethanol. Their chemical compositions were investigated using a Folin–Ciocalteu assay, aluminum chloride assay, and high-performance liquid chromatography. Antioxidant activities were evaluated in terms of radical scavenging and iron (III) reduction capacity. An enzyme inhibition assay was used to evaluate the hyaluronidase inhibition. Inflammatory cytokine secretion was evaluated with an enzyme-linked immunosorbent assay. After being exposed to a heating and ageing procedure, gallic acid and ellagic acid content were increased tenfold, while the corilagin content was doubled. Black D. longan seed extract was the most potent anti-hyaluronidase and antioxidant with the strongest free radical scavenging and reduction power, while black D. longan aril extract resulted in the highest inhibition of inflammatory cytokine secretion. Black D. longan contained more biologically active compounds and possessed more potent biological activities than conventional dried D. longan. Therefore, thermal ageing treatment is suggested for producing black D. longan, for which seed extract is suggested as a cosmeceutical active ingredient and aril extract for anti-inflammation.en_US
dc.titleEnhancement of phenolics content and biological activities of longan (Dimocarpus longan Lour.) treated with thermal and ageing processen_US
article.title.sourcetitleScientific Reportsen_US
article.volume11en_US Chalermprakiet Universityen_US Mai Universityen_US
Appears in Collections:CMUL: Journal Articles

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