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A proteólise, as propriedades viscoelásticas e a aceitação sensorial de queijo prato light fabricado com e sem adição de cultura adjunta (CAD) foram avaliadas. Os queijos foram fabricados a partir de leite microfiltrado. Dois tratamentos foram testados em duplicata: o queijo controle foi fabricado apenas com cultura mesófila tradicional (acidificante e aromatizante), e o outro foi fabricado com adição de CAD (Lactobacillus helveticus), além da cultura tradicional. A composição dos queijos foi determinada no quinto dia após a fabricação. A proteólise e as propriedades reológicas foram avaliadas nos dias 5, 25 e 45 após a fabricação. Os parâmetros viscoelásticos foram obtidos a partir de testes de relaxação. As amostras foram avaliadas sensorialmente por meio de testes de aceitação. Não houve diferença significativa (p>0,05) na composição dos queijos. Os índices de profundidade de proteólise foram significativamente (p<0,05) maiores ao final do tempo de maturação para o queijo fabricado com adição de CAD. As propriedades viscoelásticas dos queijos não foram influenciadas pelo uso de CAD (p>0,05). Nos testes de aceitação sensorial, o queijo produzido com CAD obteve notas significativamente (p<0,05) mais altas para os atributos aroma, textura e impressão global. Em relação ao atributo intenção de compra, 70% dos consumidores, certamente ou provavelmente, comprariam o queijo com CAD, enquanto apenas 43,4% teriam a mesma atitude em relação ao queijo controle. Proteolysis, viscoelastic properties and sensory acceptance of reduced fat Prato cheeses made with and without adjunt culture (AC) were evaluated. The cheeses were made from microfiltered milk. Two different treatments were replicated twice: control cheese was made only with traditional starter, while the other was made with the addition of both AC (Lactobacillus helveticus) and traditional starter. Cheese composition was determined after 5 days of manufacture. Proteolysis and rheological properties were evaluated after 5, 25 and 45 days. Viscoelastic parameters were obtained using relaxation tests. Cheese sensory properties were evaluated using acceptability tests. There was no statistical difference (p>0,05) in cheese composition. The proteolysis depth indexes were significantly higher (p<0.05) at the end of maturation for cheese made with AC. There was no statistical difference (p>0.05) in viscoelastic parameters for cheeses made with and without AC. Sensory acceptability tests indicated significant difference (p<0.05) between samples for flavor, texture and global impression. Cheese made with AC was better graded than cheese made only with starter. Buying intention grades showed that 70% consumers would certainly or probably buy cheese made with AC, while only 43.4% would behave the same with control cheese

Efeito do uso de cultura adjunta (Lactobacillus helveticus) na proteólise, propriedades viscoelásticas e aceitação sensorial de queijo prato light