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Analyses of physicochemical properties, bacterial microbiota, and lactic acid bacteria of fresh camel milk collected in Inner Mongolia.

Authors
  • Zhao, Jingna1
  • Fan, Hui1
  • Kwok, Lai-Yu1
  • Guo, Fucheng2
  • Ji, Rimutu2
  • Ya, Mei3
  • Chen, Yongfu4
  • 1 Key Laboratory of Dairy Biotechnology and Engineering, Ministry of Education, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010018, China; Key Laboratory of Dairy Products Processing, Ministry of Agriculture and Rural Affairs, Hohhot, Inner Mongolia 010018, China. , (China)
  • 2 Key Laboratory of Dairy Biotechnology and Engineering, Ministry of Education, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010018, China; Inner Mongolian Institute of Camel Research, Hohhot, Inner Mongolia 010018, China. , (China)
  • 3 Xilingol Vocational College, Xilinhot, Inner Mongolia 026000, China. , (China)
  • 4 Key Laboratory of Dairy Biotechnology and Engineering, Ministry of Education, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010018, China; Key Laboratory of Dairy Products Processing, Ministry of Agriculture and Rural Affairs, Hohhot, Inner Mongolia 010018, China. Electronic address: [email protected] , (China)
Type
Published Article
Journal
Journal of Dairy Science
Publisher
American Dairy Science Association
Publication Date
Jan 01, 2020
Volume
103
Issue
1
Pages
106–116
Identifiers
DOI: 10.3168/jds.2019-17023
PMID: 31629514
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

Camel milk has significant economic value and is an important food in the region of Alxa Left Banner of Inner Mongolia. Fifteen fresh camel milk samples were collected from domesticated camels in a pasture of Alxa Left Banner. The physicochemical properties and bacterial diversity of camel milk samples were analyzed. The average values of fat, total protein, nonfat milk solids, acidity, and density were 4.40%, 3.87%, 9.50%, 16.95°T, and 1.02 g/cm3, respectively. The bacterial microbiota of the collected fresh camel milk was investigated using PacBio single-molecule real-time (Pacific Biosciences, Menlo Park, CA) sequencing. The camel milk microbiota was highly diverse and comprised 8,513 operational taxonomic units belonging to 32 phyla, 377 genera, and 652 species. The major phyla included Proteobacteria, Firmicutes, Deinococcus-Thermus, Bacteroidetes, and Actinobacteria. A small number of lactic acid bacteria sequences were detected, representing the species Streptococcus thermophilus, Lactobacillus helveticus, Lactococcus lactis, and Leuconostoc mesenteroides. A total of 72 strains of lactic acid bacteria were isolated and identified from 15 samples, including Lactobacillus paracasei, Enterococcus italicus, Enterococcus durans, Lactococcus lactis ssp. lactis, Weissella confusa, and Enterococcus faecium. These results confirm that fresh camel milk has a high bacterial diversity and is a valuable natural resource for isolation of novel lactic acid bacteria. Copyright © 2020 American Dairy Science Association. Published by Elsevier Inc. All rights reserved.

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