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CiteScore 2021

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Preparation of grape pomace powders and analysis of their nutritive compositions

Article history: Received 14 March 2021, Received in revised form 9 April 2021, Accepted 12 April 2021, Available online 15 April 2021

Pages: 22-31


Wenjuan Lou, Bo Li, Nataliya Grevtseva


Grape pomace (GP) is produced in large amounts worldwide, leading to waste of resources and environmental pollution. Using grapes grown in eastern China, the main nutrients and polyphenols in grape seeds (GS), skin (GSK), and GP powders were determined by conventional chemical composition analysis and HPLC-MS/MS. The antioxidative activity of a GP polyphenol extract was identified using DPPH and hydroxyl radical scavenging assays and reducing power assay. GSK and GP contained less total dietary fiber than GS. The total polyphenolic content of GS was significantly higher than that of GSK and GP. The hydrogen- and electron-donating activities of the GP polyphenol extract were superior to those of vitamin C.

DOI: https://doi.org/10.32933/ActaInnovations.39.3


nutritional content; polyphenolic content; grape seeds; grape skin; grape pomace; antioxidative activity