At semi-industrial scale it was obtained two cheeses, one with aromatic culture (CHN) and the other with also L. helveticus (CHN + LH). Proteolysis during ripening was evaluated using proteolytic indices, electrophore...At semi-industrial scale it was obtained two cheeses, one with aromatic culture (CHN) and the other with also L. helveticus (CHN + LH). Proteolysis during ripening was evaluated using proteolytic indices, electrophoretic profile Urea-PAGE and release of free amino acids. Sensory evaluation was performed by acceptability test. It was observed a 5-fold increase in the fraction corresponding to αs1-I-casein in the CHN cheese and 6.5 times in the CHN + LH cheese and 7.2 and 8.2 increase respectively, for total amino acids. Prato cheese with the adjunct culture showed higher acceptability in terms of overall aroma and flavor.展开更多
对分离自中国和蒙古国传统发酵乳制品中194株瑞士乳杆菌(Lactobacillus helveticus)的发酵、益生及感官特性进行研究,旨在筛选得到优良特性菌株应用于活性乳酸菌饮料的生产当中。以菌株发酵产酸速率、人工胃肠液耐受性和胆盐耐受性为主...对分离自中国和蒙古国传统发酵乳制品中194株瑞士乳杆菌(Lactobacillus helveticus)的发酵、益生及感官特性进行研究,旨在筛选得到优良特性菌株应用于活性乳酸菌饮料的生产当中。以菌株发酵产酸速率、人工胃肠液耐受性和胆盐耐受性为主要指标,筛选出产酸速率快且益生特性优良的菌株L. helveticus IMAU30040和IMAU40086,并以商业化菌株Lactobacillus paracasei Lc-01为对照制作活性乳酸菌饮料并研究其贮藏稳定性。L. helveticus IMAU30040和IMAU40086发酵活性乳酸菌饮料于4℃贮藏28 d过程中,pH值无显著变化,活菌数仍均保持在10^(8)mL^(-1)以上,且IMAU30040在贮藏期间的活菌数高于IMAU40086。感官评价结果表明,L. helveticus发酵活性乳酸菌饮料的口感、滋味、风味和状态得分在同一贮藏时间与对照组无显著差异。综上所述,L. helveticus IMAU30040具有作为活性乳酸菌饮料发酵菌种的潜力。展开更多
文摘At semi-industrial scale it was obtained two cheeses, one with aromatic culture (CHN) and the other with also L. helveticus (CHN + LH). Proteolysis during ripening was evaluated using proteolytic indices, electrophoretic profile Urea-PAGE and release of free amino acids. Sensory evaluation was performed by acceptability test. It was observed a 5-fold increase in the fraction corresponding to αs1-I-casein in the CHN cheese and 6.5 times in the CHN + LH cheese and 7.2 and 8.2 increase respectively, for total amino acids. Prato cheese with the adjunct culture showed higher acceptability in terms of overall aroma and flavor.
文摘对分离自中国和蒙古国传统发酵乳制品中194株瑞士乳杆菌(Lactobacillus helveticus)的发酵、益生及感官特性进行研究,旨在筛选得到优良特性菌株应用于活性乳酸菌饮料的生产当中。以菌株发酵产酸速率、人工胃肠液耐受性和胆盐耐受性为主要指标,筛选出产酸速率快且益生特性优良的菌株L. helveticus IMAU30040和IMAU40086,并以商业化菌株Lactobacillus paracasei Lc-01为对照制作活性乳酸菌饮料并研究其贮藏稳定性。L. helveticus IMAU30040和IMAU40086发酵活性乳酸菌饮料于4℃贮藏28 d过程中,pH值无显著变化,活菌数仍均保持在10^(8)mL^(-1)以上,且IMAU30040在贮藏期间的活菌数高于IMAU40086。感官评价结果表明,L. helveticus发酵活性乳酸菌饮料的口感、滋味、风味和状态得分在同一贮藏时间与对照组无显著差异。综上所述,L. helveticus IMAU30040具有作为活性乳酸菌饮料发酵菌种的潜力。
