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Determination of sinapine in rapeseed pomace extract: Its antioxidant and acetylcholinesterase inhibition properties

  • Sinapine is the main secondary metabolite present in rapeseed pomace (RSP) with its concentration being dependent on rapeseed processing, growing conditions, extraction parameters and the country of origin. Here we report, the concentration of sinapine from an extract of defatted RSP harvested in the North East of Scotland. Using liquid chromatography tandem mass spectrometry, the most abundant phenolic compound in the RSP extract was, as expected, sinapine (109.1 mg/g RSP extract). Additionally, sinapic, caffeic, ferulic and syringic acids were identified (0.159–3.91 mg/g RSP extract). Sinapine together with the phenolics at the concentration present in the RSP extract, exhibited ≥50% activity relative to the extract in antioxidant assays. Furthermore, sinapine provided plasmid DNA (pBR322) protection, from 2,2′-azobis(2-amidinopropane) dihydrochloride and inhibited acetylcholinesterase activity by 85%. Molecular docking was utilised to explain the inhibitory activity. RSP can be an excellent source of bioactive compounds for pharmaceuticals, food additive and nutraceutical applications.

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Metadaten
Document Type:Article
Language:English
Parent Title (English):Food Chemistry
Volume:276
First Page:768
Last Page:775
ISSN:0308-8146
DOI:https://doi.org/10.1016/j.foodchem.2018.10.045
Pubmed Id:http://www.ncbi.nlm.nih.gov/pubmed?term=30409660
Publisher:Elsevier
Date of first publication:2018/10/10
Tag:Acetylcholinesterase (AChE); Antioxidant assays; Canola; LC-MS/MS; Phenolic acids; Plasmid DNA (pBR322); Rapeseed pomace; Sinapine
Departments, institutes and facilities:Fachbereich Angewandte Naturwissenschaften
Dewey Decimal Classification (DDC):600 Technik, Medizin, angewandte Wissenschaften / 660 Chemische Verfahrenstechnik / 664 Lebensmitteltechnologie
Entry in this database:2018/11/10