Determination of Sulfur Dioxide in Grapes and Wines

摘要: Very probably sulfur dioxide (SO2) is analyzed in wines more often than any other component. For the best product careful and judicious use of SO2 required. Most well-run wineries will check before after addition to first determine if it should be added, then sure correct amount has been added. The usefulness grape juice reviewed many times. A few reviews are Kielhofer 1963; Wucherpfennig 1975; Ough 1983; Schopfer Aerny 1985. performs several functions preservation a or wine. It inhibits polyphenol oxidase enzymes (White 1973; Ribereau-Gayon et al. 1976b; Traverso-Rueda Singleton 1973), prevents oxidation wine by binding with aldehydes ketones (Lafon-Lafourcade 1985), preventing Maillard-type reactions, reacts phenols prevent their further such as pinking (Simpson 1983). decreases red color adding 2- 4-position on anthocyanin.