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Red grape pomace contains many secondary metabolites including anthocyanins and phenolic acids which significantly contribute to its antioxidant capacity. Herein, anthocyanins were extracted from grape pomace by using supercritical carbon dioxide. Ethyl alcohol was used as cosolvent. The temperature and pressure were kept constant during the extraction (95°C and 100 bar). The total extraction time was 180 min. The total monomeric anthocyanin content (TMAC) and total antioxidant capacity (TAC) were analyzed by taking samples from the extract at the 30th, 60th, 90th, 120th, 150th, and 180th min. The TMAC of grape pomace is 1,932.1 mg/kg dry matter. The TMAC and TAC values at each time intervals were calculated to be 579.2,

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The effects of raw and leached cocoa bean hulls were investigated as a fat replacer in pound cakes. This substitution was applied for raw (RCBH) and leached (LCBH) grinded cacao bean hulls/oil in the ratios of 30/70 (30%), 40/60 (40%) and 50/50 (50%). Chemical, physical and sensorial properties of raw and leached cocoa bean hulls were studied as well as fat substituted cakes. Ash, protein, total phenolic compounds and total antioxidant activity decreased with leaching process. Crude fiber content increased in fat substituted cakes compared to control cake. RCBH cakes showed higher bioactive components than LCBH cakes because of raw cocoa bean hulls were higher phenolic compounds and total antioxidant activities than leached cocoa bean hulls. The results showed that 50% of vegetable oil replacement with raw cocoa bean hull in cake formulation significantly improved chemical, physical and sensory properties of fat substituted cakes.

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