Antioxidant activity and consumer acceptance of grape seed flour-containing food products

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Grape seed flour (GSF) is produced from the pomace waste generated during winemaking. The inclusion of Merlot and Cabernet Sauvignon GSFs in cereal bars, pancakes and noodles was evaluated using antioxidant activity measurements [2,2 diphenyl-1-picrylhydrazyl (DPPH) radical scavenging]. Each product (noodles, pancakes and cereal bars) was also evaluated on separate days for consumer acceptance (n = 100 per panel). In comparing antioxidant activities, the highest DPPH radical-scavenging activity was in pancakes containing Cabernet Sauvignon GSF (25% and 30%), noodles containing Cabernet Sauvignon GSF (20%) and cereal bars containing Merlot GSF (5%). From consumer sensory evaluation, cereal bars made with Merlot GSF, control pancakes and control noodles had high consumer acceptance. Products with low consumer acceptance included pancakes containing 25% Cabernet Sauvignon GSF and noodles containing 20% Cabernet Sauvignon GSF. Overall, the cereal bar containing 5% Merlot GSF showed a good balance of high antioxidant activity with consumer acceptability, making this a promising GSF-containing new food product.

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