IMPACT OF GRAPE POMACE MACERATION ON THE QUALITY OF RHINE RIESLING WINE

Abstract

Vina Rajnskog rizlinga proizvedena standardnom tehnologijom za bijela vina te maceracijom masulja od 3 sata i maceracijom masulja od 6 sati analizirana su kako bi se utvrdile razlike u kemijskom sastavu i senzornim svojstvima. Kemijska analiza provedena je nakon fermentacije, a senzorno ocjenjivanje 3 mjeseca nakon fermentacije. Vina dobivena maceracijom masulja od 3 sata senzorno su ocijenjena najbolje dok su vina dobivena maceracijom od 6 sati te standardnom tehnologijom bila slabije kakvoće. Po kemijskom sastavu vina dobivena maceracijom masulja nisu se međusobno razlikovala, dok su vina dobivena standardnim postupkom proizvodnje za bijela vina imala niži ukupni ekstrakt, pepeo, hlapivu kiselost i ukupne fenole.Rhine riesling wines produced by usual technology for white wines and by maceration for 3 hours and maceration for 6 hours were investigated for differences in chemical composition and sensory properties. Chemical analyses were performed after fermentation and sensory testing was done 3 months after fermentation. Wine produced by maceration for 3 hours was evaluated as sensory the best while the wine produced by maceration for 6 hours and usual technology was of inferior quality. In chemical composition there was no difference between wine produced by maceration of grape pomace while wines produced by standard technology for white wine had lower total extract, ashes, volatyle acidity and total phenols

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