Intestinal Lactobacillus community structure and its correlation with diet of Southern Chinese elderly subjects§

Yuanyuan Pan; Da-Wen Sun; Quanyang Li

doi:10.1007/s12275-016-6131-7

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Intestinal Lactobacillus community structure and its correlation with diet of Southern Chinese elderly subjects§: Yuanyuan Pan ^1,2, Da-Wen Sun ^1,2,3, Quanyang Li ⁴; Journal of Microbiology 2016;54(9):594-601.
DOI: https://doi.org/10.1007/s12275-016-6131-7
Published online: August 31, 2016

¹School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, P. R. China, ²Academy of Contemporary Food Engineering, South China University of Technology, Guangzhou Higher Education Mega Center, Guangzhou 510006, P. R. China, ³Food Refrigeration and Computerized Food Technology (FRCFT), Agriculture and Food Science Centre, University College Dublin, National University of Ireland, Belfield, Dublin 4, Ireland, ⁴College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, P. R. China¹School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, P. R. China, ²Academy of Contemporary Food Engineering, South China University of Technology, Guangzhou Higher Education Mega Center, Guangzhou 510006, P. R. China, ³Food Refrigeration and Computerized Food Technology (FRCFT), Agriculture and Food Science Centre, University College Dublin, National University of Ireland, Belfield, Dublin 4, Ireland, ⁴College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, P. R. China

Corresponding author: Da-Wen Sun , Tel: -,
Quanyang Li , Tel: -,

Received: 18 March 2016 • Revised: 29 June 2016 • Accepted: 7 July 2016

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Abstract

This study aimed to investigate the relationship between the intestinal Lactobacillus species and diet of elderly subjects in a longevity area in Southern China. Healthy elderly subjects ranging from 80 to 99 years old were respectively selected from the regions of Bama and Nanning, Guangxi, China. The nested polymerase chain reaction and denaturing gradient gel electrophoresis (PCR-DGGE) technology was used to analyze the intestinal Lactobacillus community structure.
Results
showed that Weissella confusa, L. mucosae, L. crispatus, L. salivarius, and L. delbrueckii were the representative Lactobacillus of elderly subjects. Among them, L. crispatus and L. delbrueckii were the dominant Lactobacillus of all species. In comparison to Nanning elderly subjects, the detection frequencies of W. confusa and L. salivarius were significantly increased in Bama elderly subjects (P < 0.01), whereas L. mucosae was significantly decreased (P < 0.01). Interestingly, it was also found that there were 4 kinds of representative Lactobacillus, which were significantly correlated with dietary fiber. W. confusa (P < 0.01) and L. salivarius (P < 0.05) were significantly positively correlated with the intake of dietary fiber, while L. mucosae (P < 0.01) and L. crispatus (P < 0.05) were significantly negatively correlated with the intake of dietary fiber, respectively. Results confirmed that different diets had obvious effects on the intestinal Lactobacillus community structure of elderly subjects in Southern China, which may provide a certain theoretical basis for the elderly’s healthy food strategic design and probiotics product development.

Keywords: elderly;intestinal Lactobacillus community;structure diet;nested PCR-DGGE

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Intestinal Lactobacillus community structure and its correlation with diet of Southern Chinese elderly subjects§

J. Microbiol. 2016;54(9):594-601. Published online August 31, 2016

DOI: https://doi.org/10.1007/s12275-016-6131-7

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