Os efeitos inibitórios dos compostos fenólicos dos vinhos na actividade da lisozima contra as bactérias lácticas

m i c r o The inhibitory effects of wine phenolics on lysozyme activity against lactic acid bacteria F. Guzzo a, M.S. Cappello b, M. Azzolini c, E. Tosi c, G. Zapparoli a,⁎ a b c Dipartimento di Biotecnologie, Università degli Studi di Verona, strada Le Grazie 15, 37134 Verona, Italy CNR, Istituto di Scienze delle Produzioni Alimentari (ISPA), Prov.le Lecce-Monteroni, 73100 Lecce, Italy Centro per la Sperimentazione in Vitivinicoltura, Provincia di Verona, Servizio Agricoltura, Via della Pieve 64-37020 San Pietro in Cariano, Verona, Italy a r t i c l e i n f o a b s t r a c t The lysozyme of hen's egg white is used in winemaking to control spontaneous lactic acid bacteria (LAB). A total of eight LAB strains, isolated from grape must and wine, were used to assess the inhibitory effects of wine phenolics on lysozyme activity. The presence of phenolics, extracted from grape pomace, in growth medium reduced the mortality rate due to the lysozyme activity. This effect was especially clear in the case of strains belonging to Lactobacillus uvarum, Pediococcus parvulus and Oenococccus oeni, which are more sensitive to lysozyme than L. plantarum and L. hilgardii strains. Cell lysis assays carried out on four strains sensitive to lysozyme and Micrococcus lysodeikticus ATCC 4698, used as a reference strain, confirmed the inhibition of grape pomace phenolics on the muramidase. There was no interference from non-flavonoids, flavanols and flavonol compounds, when they…

market •Surface area of world vineyards • Grapes • Global production • Wine • Global wine production • Global wine consumption • Degree of market equilibrium in the world of wine • International trade 2 © OIV 2011 Surface area of vineyards worldwide 3 © OIV 2011 Surface area of vineyards worldwide 1000 ha 7586 4 © OIV 2011 Recent developments of the leading vineyards 1000 ha 5 © OIV 2011 Surface area of vineyards worldwide Areas planted…

Produção e composição química da uva de videiras Cabernet Sauvignon submetidas à adubação nitrogenada Grapes yield and chemistry composition in Cabernet Sauvignon grapevine with nitrogen fertilization Gustavo BrunettoI, 1; Carlos Alberto CerettaII; João KaminskiII; George Wellington de MeloIII; Eduardo GirottoII; Eder Efrain TrentinII; Cledimar Rogério LourenziII; Renan Costa Beber VieiraIV; Luciano Colpo GatiboniV IDepartamento de Engenharia de Biossistemas, Universidade…

secundário da aterosclerose Efficacy of grape, red wine and grape juice flavonoids in the prevention and secondary treatment of atherosclerosis MARA RÚBIA GIEHL1 SIMONE MORELO DAL BOSCO2 CAMILA MAURENTE LAFLOR3 BERNARDETE WEBER4 RESUMO ABSTRACT Objetivo: fazer uma revisão sobre a eficácia dos flavonóides presentes na uva, suco de uva e vinho tinto quanto a sua a ação antioxidante no colesterol LDL (low density lipoprotein – lipoproteína de baixa densidade) e demais efeitos…

sites are Maiata, Casas Próximas, Terra Baptista, Larano, Serrado, Cruz da Guarda, Massapez and Referta. The beach of Porto da Cruz is also known as beach lagoon. Its characterized by an imposing mountain overlooking the sea. This black sand beach has a good access to the sea and has a solarium, cafeteria, showers and toilets. Along the beach is a bathing complex with two pools and support structures. From the geological point of view, the Porto da Cruz is a true showcase of…

Trans-resveratrol é uma substância fenólica do tipo não flavanoídica que pode ser encontrado em várias plantas. Tem ocorrência também em chás, frutas, várias plantas medicinais e recentemente foi encontrada em vinhos, especialmente os tintos. Esta substância tem sido apontada como responsável por vários benefícios a saúde humana. Este trabalho é uma revisão da literatura existente para o resveratrol como parte de um estudo geral sobre a composição química de vinhos. Palavras-chave:…

índices bioclimáticos Delimitation of Agro-climatic aptitude for vine crop under irrigation conditions in the Northeast Brazil Abstract: Long term weather data were used together with simple regression models involving crop coefficient (Kc), reference evapotranspiration (ET0) and accumulated degree days (DDac) to quantify the vineyard water requirement (VWR) of wine grapes in the Brazilian Northeast. VWR joined with precipitation, allowed the development of a vineyard water…

Define the Business: The company is a wine producer and exporter. There are its own vineyards, wine producing and bottling facilities and also the most abundant proprietary wine distribution network in Chile. It cultivates over 21,538 acres (8,720 h ates, hectares) of the best wine in Chile. The variation of lands cultivating vineyards assures Concha y Toro the ability to guarantee the highest-quality grape supplies for the production of its wines. The business also counts with…

fatty acids and antioxidant capacity of red grape (Vitis vinifera L. and Vitis labrusca L.) pomace. 2008. 112 p. Dissertation (Master Degree in Food Science) – Agricultural Sciences Center, Federal University of Santa Catarina, 2008. ABSTRACT The wine production in Brazil is located mostly in Southern, Southeastern and Northeastern regions, being a well-established and of significant social and economical importance. In Santa Catarina state, vitiviniculture presents economical…

fatty acids and antioxidant capacity of red grape (Vitis vinifera L. and Vitis labrusca L.) pomace. 2008. 112 p. Dissertation (Master Degree in Food Science) – Agricultural Sciences Center, Federal University of Santa Catarina, 2008. ABSTRACT The wine production in Brazil is located mostly in Southern, Southeastern and Northeastern regions, being a well-established and of significant social and economical importance. In Santa Catarina state, vitiviniculture presents economical…