Phytochemicals from Camellia nitidissima Chi inhibited the formation of advanced glycation end-products by scavenging methylglyoxal

•The total phenolic and quercetin content in ethanolic extract and different fractions were studied.•16 phenolic compounds were identified using HPLC/HRMS method.•The dichloromethane and ethyl acetate fraction possessed better effects of inhibiting AGE formation.•Both mono- and di-methylglyoxal quer...

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Bibliographic Details
Published in:Food chemistry 2016-08, Vol.205, p.204-211
Main Authors: Wang, Weixin, Liu, Haiyan, Wang, Zhennan, Qi, Jing, Yuan, Shengtao, Zhang, Weijie, Chen, Hongjuan, Finley, John W., Gu, Liwei, Jia, Ai-Qun
Format: Article
Language:English
Subjects:
Advanced glycation end-products
Camellia - chemistry
Camellia nitidissima Chi
Glycation End Products, Advanced - chemistry
Phytochemicals - chemistry
Plant Extracts - chemistry
Pyruvaldehyde - chemistry
Quercetin
Quercetin - chemistry
Scavenging methylglyoxal
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Summary:•The total phenolic and quercetin content in ethanolic extract and different fractions were studied.•16 phenolic compounds were identified using HPLC/HRMS method.•The dichloromethane and ethyl acetate fraction possessed better effects of inhibiting AGE formation.•Both mono- and di-methylglyoxal quercetin adducts were detected using HPLC–ESI-MSn. The objective of this study was to investigate the inhibitory effects of Camellia nitidissima Chi (CNC) on the advanced glycation end-product (AGE) formation. CNC was extracted with ethanol and further separated into dichloromethane, ethyl acetate, n-butanol, and water soluble fractions. Ethyl acetate fraction had the highest total phenolic and quercetin content compared with other fractions. Sixteen phenolic compounds were identified using HPLC Triple TOF MS/MS. Bovine serum albumin (BSA)–glucose assay showed that dichloromethane and ethyl acetate fraction inhibited AGE formation by 88.1% and 87.5% at 2.5mg/mL. BSA–methylglyoxal assay showed that ethyl acetate fraction inhibited 54.1% AGE formation while dichloromethane fraction inhibited 28.1%. Over 96.0% of methylglyoxal was scavenged by different fractions within 12h. Both mono- and di-methylglyoxal quercetin adducts were identified after incubating quercetin with methylglyoxal using HPLC–ESI-MSn. The results in this study suggest that CNC extracts inhibited AGEs formation in part through scavenging methylglyoxal by phenolic compounds.
ISSN:0308-8146
1873-7072
DOI:10.1016/j.foodchem.2016.03.019