Effects of Fining Treatments on Color and Clearness of Apple Wine
2017
Bang, B.H., Eulji University, Daejeon, Republic of Korea | Jeong, E.J., Eulji University, Daejeon, Republic of Korea | Kang, H., Konkuk University, Seoul, Republic of Korea | Rhee, M.S., Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea | Yi, D.H., Konkuk University, Seoul, Republic of Korea | Paik, J.K., Eulji University, Daejeon, Republic of Korea
Comparative fining trials were conducted in a laboratory to study the effects of fining treatments including polyvinylpolypyrrolidone (PVPP) and bentonite on the color and clearness of apple wine. The wines were subjected to three different fining treatments: PVPP, PVPP+bentonite (applied at the same time), and PVPP+bentonite (24 h later). Based on the results, all treatments induced noticeable decreases in wine color (APHA value) and turbidity. The treatment including PVPP and bentonite at the same time provided the best results in relation to wine color and clearness. PVPP was the most effective in the reduction of phenolic compounds, which means it helped wine obtain a paler color. Organic acids and aromatic profile were not altered by the fining treatments.
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