The unclarified Cabernet Sauvignon red wine and Chardonnay white wine were used as research object, the clarification effect of wine grape pomace on the wine samples was studied. The three pomaces were 70% ethanol-extracted peels (P1), 70% ethanol-extracted stalks (P2) and non-ethanol-extracted stalks (P3) derived from Cabernet Sauvignon. The results showed that the best clarification effect on Cabernet Sauvignon red wine was 4 g/L for all three pomaces. The turbidity value of wine samples treated with 4 g/L P1 was 2.60 NTU, with a light transmittance of 86.50%. Adding 4 g/L of P2, the turbidity and light transmittance of the wine were 2.01 NTU and 84.85%, respectively, while the total phenol content had the minimal decline compared with unclarified wine sample. While the concentration of P3 was 4 g/L, the turbidity and light transmittance were 3.17 NTU and 82.92%, respectively. All three types of pomaces showed good clarification effect for Cabernet Sauvignon red wine and little effect on Chardonnay white wine.
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