浙江农业学报 ›› 2021, Vol. 33 ›› Issue (2): 335-345.DOI: 10.3969/j.issn.1004-1524.2021.02.17

• 食品科学 • 上一篇    下一篇

我国特色发酵蔬菜降解亚硝酸盐菌株的筛选鉴定及应用

忻晓庭1(), 刘大群1, 张程程1, 吴敏2, 陈登高3, 章检明1,*()   

  1. 1.浙江省农业科学院 食品科学研究所,浙江省果蔬保鲜与加工技术研究重点实验室,浙江 杭州 310021
    2.浙江大学 生命科学学院,浙江 杭州 310058
    3.浙江三统菜业有限公司,浙江 绍兴 312000
  • 收稿日期:2020-07-29 出版日期:2021-02-25 发布日期:2021-02-25
  • 通讯作者: 章检明
  • 作者简介:章检明,E-mail: zjm1990523@163.com
    忻晓庭(1992—),女,浙江德清人,硕士,研究方向为蔬菜精深加工与综合利用。E-mail: 18758022771@163.com
  • 基金资助:
    国家自然科学基金(31671865);浙江省重点研发计划(2020C04008)

Screening, identification and application of high efficient nitrite degrading functional strains in Chinese characteristic fermented vegetables

XIN Xiaoting1(), LIU Daqun1, ZHANG Chengcheng1, WU Min2, CHEN Denggao3, ZHANG Jianming1,*()   

  1. 1. Institute of Food Science, Zhejiang Academy of Agricultural Sciences, Key Laboratory of Fruits and Vegetables Postharvest and Processing Technology Research of Zhejiang Province, Hangzhou 310021, China
    2. College of Lile Sciences, Zhejiang University, Hangzhou 310058, China
    3. Zhejiang Santong Vegetables Industry Co., Ltd., Shaoxing 312000, China
  • Received:2020-07-29 Online:2021-02-25 Published:2021-02-25
  • Contact: ZHANG Jianming

摘要:

从中国传统特色发酵蔬菜中分离纯化出72株乳酸菌,从中筛选出30株亚硝酸盐降解率在85%以上的乳酸菌,并将其进行耐酸耐胆盐试验,获得5株对胃酸和胆盐有较好耐受力的菌株。通过形态学以及16S rDNA测序鉴定,5株乳酸菌均为植物乳杆菌。对这5株菌进行发酵特性研究,结果表明,JLSC2-6生长繁殖旺盛,产酸能力强,耐盐性能好,功能优良,且具有高效降解亚硝酸盐的能力。接种JLSC2-6发酵泡菜,测定发酵过程中泡菜的pH值、亚硝酸盐含量,结果发现,JLSC2-6发酵泡菜的pH值和亚硝酸盐含量与自然发酵泡菜相比显著下降。因此,植物乳杆菌JLSC2-6可作为一种高效安全的发酵菌株应用于发酵蔬菜。

关键词: 降解亚硝酸盐, 乳酸菌, 筛选, 鉴定

Abstract:

Seventy two strains of lactic acid bacteria were isolated and purified from traditional fermented vegetables in China. Their ability to degrade nitrite was determined. Thirty strains of lactic acid bacteria with a degradation rate of more than 85% were screened out. Five strains with good tolerance for gastric acid and bile salt were obtained by acid and bile salt tolerance test. The morphology and 16S rDNA sequencing results showed that all strains were Lactobacillus plantarum. The results of fermentation characteristics showed that Lactobacillus plantarum JLSC2-6 had strong growth, strong acid production capacity, good salt tolerance and excellent function, and had the ability to degrade nitrite efficiently. The pH value and nitrite content of pickles fermented by Lactobacillus plantarum JLSC2-6 were determined. The results showed that the pH value and nitrite content of pickles fermented by JLSC2-6 were significantly different from those of natural fermentation pickles. Therefore, Lactobacillus plantarum JLSC2-6 can be used as an efficient and safe starter for fermented vegetables.

Key words: degradation of nitrite, lactic acid bacteria, screening, identification

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