一种Lactococcus lactis启动培养物减少了高发酵中的膨胀器缺陷,这些发酵物用低盐水
Benjamin Blouin1, Christian Pagan-Medina2, Ilenys M Pérez-Díaz3
1Department of Food, Bioprocessing and Nutrition Sciences, North Carolina State University, Raleigh, North Carolina, USA.
Journal of food science
|September 29, 2025
概括
乳球菌可防止黄瓜膨胀器缺陷在减少盐盐水中. 与特定的乳酸细菌共同注射,不包括Lactiplantibacillus pentosus,显示出商业黄瓜发酵的前景.
科学领域:
- 食品微生物学 食品微生物学
- 发酵科学 发酵科学
- 农业科学 农业科学
背景情况:
- 黄瓜发酵容易受到由内在细菌 (如Enterobacter和Leuconostoc) 产生的二氧化碳引起的膨胀缺陷.
- 减少化盐加剧了膨胀器的缺陷,影响了商业可行性.
- 乳植物菌 (Lactiplantibacillus pentosus) 是晚期发酵阶段的关键细菌,但其在预防早期膨胀缺陷方面的作用尚不清楚.
研究的目的:
- 研究乳球菌作为起始培养物的潜力,以防止黄瓜发酵中的膨胀器缺陷.
- 评估同注射Lc.的影响. 乳糖与其他细菌对二氧化碳的产生和膨胀形成的影响.
- 为了确定最佳的初始培养组合,以减少盐发酵.
主要方法:
- 在黄瓜发酵细菌体中选27种假定脱碳酶酶.
- 使用Lc.c.进行的同注射实验. 乳糖与Leuconostoc或Enterobacter物种在黄瓜汁中等 (CJM).
- 使用各种初始培养和减少化盐水,对巴氏化和新鲜黄瓜进行发酵试验.
主要成果:
- 肠杆菌群具有显著更多的脱碳酶酶 (89%) 比乳酸细菌 (37%).
- 与Lc.c.的同时注射. 乳糖减少了酸和乙醇的形成,并显著减少了Enterobacter种群.
- 在 Lc. 与Enterobacter cancerogenus或Leuconostoc lactis共同注射的乳糖减少了巴氏杀菌黄瓜中的二氧化碳产量和膨胀指数.
结论:
- 一种混合的Lc.初始培养物. 乳糖与乳酸细菌,除了Lp. pentosus,可以防止低盐黄瓜发酵中的膨胀器缺陷.
- 在 Lc. 乳糖显示出商业应用的潜力,以防止因膨胀器缺陷造成的经济损失.
- 在Lc.的同时. 虽然lactis可以减少膨胀器缺陷,但它不能完全防止它们,这表明需要进一步优化.
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