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Study on screening of high acid-produing strains and mechanism of acid-produing
Author(s): 
Pages: 189-190,193
Year: Issue:  1
Journal: Science and Technology of Food Industry

Keyword:  酸奶 乳酸菌 酸度 β-半乳糖苷酶;
Abstract: 为选择产酸性能优良的乳酸菌用于酸奶生产,本实验对生产酸奶常用的保加利亚乳杆菌和嗜热链球菌的产酸能力进行了研究,测定了其发酵过程中滴定酸度和pH的变化,并对其产酸机理进行了初探。研究结果表明,乳酸菌各菌株的产酸能力各不相同,菌株TM111-S产酸速度较快,pH下降速度较快,发酵凝乳最终pH较低。乳酸菌产酸能力与菌体细胞内β-半乳糖苷酶的量相关。筛选性能优良乳酸菌菌株对生产高质量的酸奶,提高工业化生产效率具有一定的意义。
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