The effect of pectolytic enzyme treatments of Merlot red grape mashes on the microbiological quality of wines

• Autorzy: Kiro Mojsov
• Języki publikacji: EN

Abstrakty

EN

The paper investigates effects of pectolytic enzyme treatments of red grape mashes on the microbiological quality of wines and wine stability with counting of the presence yeast cells (Saccharomyces cerevisiae), after incubation on Sabourald-maltose agar. Also wine samples were investigated for the presence of moulds and other bacteria, including dangerous bacteria Salmonella and Shigella, Staphylococus aureus, Proteus spp., Sulphite-reducing clostridy and Escherichia coli. All wine samples the results showed the presence of yeasts Saccharomyces cerevisiae. Saccharomyces is regarded as spoilage organism only if it is found in the wrong place at the wrong time (e.g. in a bottle of semi-sweet wine) causing re-fermentation. Pectinolytic enzyme preparation Trenolin Rot DF showed the best results. Pectolytic enzyme treatments of red grape mashes had a pronounced effect on the microbiological quality of wines and wine stability. Results from comparison of effects of pectolytic enzyme preparations in winemaking on the microbiological quality of wines can contribute to a better orientation in the choice of suitable enzyme preparations in wine industry. (original abstract)

Słowa kluczowe

PL

Produkcja wina; Rynek wina; Mikrobiologia; Jakość mikrobiologiczna

EN

Wine production; Wine market; Microbiology; Microbiological quality

• Czasopismo: Perspectives of Innovations, Economics and Business
• Rocznik: 2012
• Tom: 11
• Numer: nr 2
• Strony: 110-116

Twórcy

autor

Kiro Mojsov

• Goce Delcev University in Stip, Macedonia

Bibliografia

• Amerine, M., Kunkee, R., Ough, C., Singleton, V. and Webb, A., 1980. The technology of wine making,  (4th Ed), AVI Publishing Co. Inc: Westport, Connecticut
• Bartowsky, E. and Henschke, P., 2004. "Acetic acid bacteria and wine: All is well until oxygen enters the scene,"  Aust. N.Z. Grapegrower Winemaker , 485a, pp.86-91
• Boulton, R., Singleton, V., Bisson, L. and Kunkee, R., 1996. Principles and practices of winemaking, New York: Chapman&Hall
• Canal-Llaubères, R., 1993. "Enzymes in winemaking," In: Fleet, GH. (Ed.), Wine microbiology and biotechnology, Philadelphia: Harwood Academic Publishers
• Du Toit, M. and Pretorius, I., 2000. "Microbial Spoilage and Preservation of Wine: Using weapons from nature'own  arsenal. A review," South African Journal of Enology and Viticulture, Vol.21, pp.74-96
• Du Toit, M. and Pretorius, I., 2002. "The occurrence, control and esoteric effects of acetic acid bacteria in winemaking,"  Annals of Microbiology, Vol.52, pp.155-79
• Revilla, I. and Gonzalez-San Jose, M., 2003. "Addition of pectolytic enzymes: an enological practice which improves the chromaticity and stability of red wines," Int. J. Food Sci. Technol., Vol.38, pp.29-36
• Shimazu, Y. and Watanabe, M., 1981. "Effects of yeast strains and environmental conditions on forming organic acids in must during fermentation," J. Ferment. Technol., Vol.59, pp.27-32
• Van Rensburg, P. and Pretorius, I., 2000.  "Enzymes in winemaking: harnessing natural catalysts for efficient biotransformations. A review," South African Journal of Enology and Viticulture, Vol.21, pp. 52-73
• Zoecklein, B., Fugelsang, K., Gump, B. and Nury, F., 1995. Wine analysis and production. New York: Chapman and Hall Enology Library