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Kim YY, Kim JC, Kim S, Yang JE, Kim HM, Park HW. Heterotypic stress-induced adaptive evolution enhances freeze-drying tolerance and storage stability of Leuconostoc mesenteroides WiKim33. Food Res Int 2024; 175:113731. [PMID: 38128991 DOI: 10.1016/j.foodres.2023.113731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 11/15/2023] [Accepted: 11/22/2023] [Indexed: 12/23/2023]
Abstract
Lactic acid bacteria (LAB) are currently being investigated for their potential use as probiotics and starter cultures. Researchers have developed powdering processes for the commercialization of LAB. Previous studies have focused on identifying innovative cryoprotective agents and freeze-drying (FD) techniques to enhance the stability of LAB. In this study, adaptive laboratory evolution (ALE) was employed to develop a strain with high FD tolerance and enhanced storage stability. Leuconostoc mesenteroids WiKim33 was subjected to heterotypic shock (heat and osmosis shock) to induce the desired phenotype and genotype. An FD-tolerant enhanced Leu. mesenteroides WiKim33 strain (ALE50) was obtained, which harbored a modified fatty acid composition and cell envelope characteristics. Specifically, ALE50 showed a lower unsaturated fatty acid (UFA)/saturated fatty acid (SFA) ratio and a higher cyclic fatty acid (CFA) composition. Moreover, the exopolysaccharide (EPS) thickness increased significantly by 331% compared to that of the wild type (WT). FD tolerance, which was evaluated using viability testing after FD, was enhanced by 33.4%. Overall, we demonstrated the feasibility of ALE to achieve desirable characteristics and provided insights into the mechanisms underlying increased FD tolerance.
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Affiliation(s)
- Yeong Yeol Kim
- Technology Innovation Research Division, World Institute of Kimchi, Gwangju 61755, Republic of Korea; Department of Integrative Food, Bioscience and Biotechnology, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Jong-Cheol Kim
- Technology Innovation Research Division, World Institute of Kimchi, Gwangju 61755, Republic of Korea
| | - Seulbi Kim
- Technology Innovation Research Division, World Institute of Kimchi, Gwangju 61755, Republic of Korea; Division of Applied Bioscience & Biotechnology, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Jung Eun Yang
- Technology Innovation Research Division, World Institute of Kimchi, Gwangju 61755, Republic of Korea
| | - Ho Myeong Kim
- Technology Innovation Research Division, World Institute of Kimchi, Gwangju 61755, Republic of Korea.
| | - Hae Woong Park
- Technology Innovation Research Division, World Institute of Kimchi, Gwangju 61755, Republic of Korea.
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2
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Cheng Z, Yan X, Wu J, Weng P, Wu Z. Effects of freeze drying in complex lyoprotectants on the survival, and membrane fatty acid composition of Lactobacillus plantarum L1 and Lactobacillus fermentum L2. Cryobiology 2022; 105:1-9. [DOI: 10.1016/j.cryobiol.2022.01.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 01/16/2022] [Accepted: 01/17/2022] [Indexed: 12/16/2022]
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3
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Girardeau A, Passot S, Meneghel J, Cenard S, Lieben P, Trelea IC, Fonseca F. Insights into lactic acid bacteria cryoresistance using FTIR microspectroscopy. Anal Bioanal Chem 2021; 414:1425-1443. [PMID: 34967915 DOI: 10.1007/s00216-021-03774-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 10/31/2021] [Accepted: 11/04/2021] [Indexed: 10/19/2022]
Abstract
Freezing is widely used for bacterial cell preservation. However, resistance to freezing can greatly vary depending on bacterial species or growth conditions. Our study aims at identifying cellular markers of cryoresistance based on the comparison of three lactic acid bacteria (LAB) exhibiting different tolerance to freezing: Carnobacterium maltaromaticum CNCM I-3298, Lactobacillus delbrueckii subsp. bulgaricus ATCC 11842, and Lactobacillus delbrueckii subsp. bulgaricus CFL1. A thorough characterization of their cytoplasmic membrane properties was carried out by measuring their fatty acid composition, membrane fluidity, and lipid phase transition upon cooling from 50 to -50 °C. Vitrification temperatures of the intra- and extra-cellular compartments were also quantified by differential scanning calorimetry. Additionally, the cell biochemical characterization was carried out using a recently developed Fourier transform infrared (FTIR) micro-spectroscopic approach allowing the analysis of live bacteria in an aqueous environment. The multivariate analysis of the FTIR spectra of fresh and thawed cells enabled the discrimination of the three bacteria according to their lipid, protein, and cell wall peptidoglycan components. It also revealed freezing-induced modifications of these three cellular components and an increase in bacteria heterogeneity for the two strains of L. bulgaricus, the freeze-sensitive bacteria. No cellular damage was observed for C. maltaromaticum, the freeze-resistant bacteria. Comparison of the results obtained from the different analytical methods confirmed previously reported cryoresistance markers and suggested new ones, such as changes in the absorbance of specific infrared spectral bands. FTIR microspectroscopy could be used as a rapid and non-invasive technique to evaluate the freeze-sensitivity of LAB.
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Affiliation(s)
- Amélie Girardeau
- UMR SayFood, Université Paris-Saclay, INRAE, 78850, Thiverval-Grignon, AgroParisTech, France
| | - Stéphanie Passot
- UMR SayFood, Université Paris-Saclay, INRAE, 78850, Thiverval-Grignon, AgroParisTech, France
| | - Julie Meneghel
- UMR SayFood, Université Paris-Saclay, INRAE, 78850, Thiverval-Grignon, AgroParisTech, France
| | - Stéphanie Cenard
- UMR SayFood, Université Paris-Saclay, INRAE, 78850, Thiverval-Grignon, AgroParisTech, France
| | - Pascale Lieben
- UMR SayFood, Université Paris-Saclay, INRAE, 78850, Thiverval-Grignon, AgroParisTech, France
| | - Ioan-Cristian Trelea
- UMR SayFood, Université Paris-Saclay, INRAE, 78850, Thiverval-Grignon, AgroParisTech, France
| | - Fernanda Fonseca
- UMR SayFood, Université Paris-Saclay, INRAE, 78850, Thiverval-Grignon, AgroParisTech, France.
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4
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Gao X, Kong J, Zhu H, Mao B, Cui S, Zhao J. Lactobacillus, Bifidobacterium and Lactococcus response to environmental stress: Mechanisms and application of cross-protection to improve resistance against freeze-drying. J Appl Microbiol 2021; 132:802-821. [PMID: 34365708 DOI: 10.1111/jam.15251] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 06/12/2021] [Accepted: 07/07/2021] [Indexed: 01/30/2023]
Abstract
The review deals with lactic acid bacteria in characterizing the stress adaptation with cross-protection effects, mainly associated with Lactobacillus, Bifidobacterium and Lactococcus. It focuses on adaptation and cross-protection in Lactobacillus, Bifidobacterium and Lactococcus, including heat shocking, cold stress, acid stress, osmotic stress, starvation effect, etc. Web of Science, Google Scholar, Science Direct, and PubMed databases were used for the systematic search of literature up to the year 2020. The literature suggests that a lower survival rate during freeze-drying is linked to environmental stress. Protective pretreatment under various mild stresses can be applied to lactic acid bacteria which may enhance resistance in a strain-dependent manner. We investigate the mechanism of damage and adaptation under various stresses including heat, cold, acidic, osmotic, starvation, oxidative and bile stress. Adaptive mechanisms include synthesis of stress-induced proteins, adjusting the composition of cell membrane fatty acids, accumulating compatible substances, etc. Next, we reveal the cross-protective effect of specific stress on the other environmental stresses. Freeze-drying is discussed from three perspectives including the regulation of membrane, accumulation of compatible solutes and the production of chaperones and stress-responsive proteases. The resistance of lactic acid bacteria against technological stress can be enhanced via cross-protection, which improves industrial efficiency concerning the survival of probiotics. However, the adaptive responses and cross-protection are strain-dependent and should be optimized case by case.
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Affiliation(s)
- Xinwei Gao
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, P.R. China.,School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
| | - Jie Kong
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
| | - Hongkang Zhu
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
| | - Bingyong Mao
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, P.R. China.,School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
| | - Shumao Cui
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, P.R. China.,School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
| | - Jianxin Zhao
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, P.R. China.,School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
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5
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de Oliveira APD, de Oliveira Almeida TJ, Santos TMB, Dias FS. Symbiotic goat milk ice cream with umbu fortified with autochthonous goat cheese lactic acid bacteria. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2021.110888] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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6
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Min B, Yoo D, Lee Y, Seo M, Kim H. Complete Genomic Analysis of Enterococcus faecium Heat-Resistant Strain Developed by Two-Step Adaptation Laboratory Evolution Method. Front Bioeng Biotechnol 2020; 8:828. [PMID: 32793575 PMCID: PMC7391244 DOI: 10.3389/fbioe.2020.00828] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Accepted: 06/29/2020] [Indexed: 12/14/2022] Open
Abstract
Stress resistance is an important trait expected of lactic acid bacteria used in food manufacturing. Among the various sources of stress, high temperature is a key factor that interrupts bacterial growth. In this regards, constant efforts are made for the development of heat-resistant strains, but few studies were done accompanying genomic analysis to identify the causal factors of the resistance mechanisms. Furthermore, it is also thought that tolerance to multiple stresses are equally important. Herein, we isolated one Enterococcus faecium strain named BIOPOP-3 and completed a full-length genome sequence. Using this strain, a two-step adaptive laboratory evolution (ALE) method was applied to obtain a heat-resistant strain, BIOPOP-3 ALE. After sequencing the whole genome, we compared the two full-length sequences and identified one non-synonymous variant and four indel variants that could potentially confer heat resistance, which were technically validated by resequencing. We experimentally verified that the evolved strain was significantly enhanced in not only heat resistance but also acid and bile resistance. We demonstrated that the developed heat-resistant strain can be applied in animal feed manufacturing processes. The multi-stress-resistant BIOPOP-3 ALE strain developed in this study and the two-step ALE method are expected to be widely applied in industrial and academic fields. In addition, we expect that the identified variants which occurred specifically in heat-resistant strain will enhance molecular biological understanding and be broadly applied to the biological engineering field.
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Affiliation(s)
- Bonggyu Min
- Department of Agricultural Biotechnology, and Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, South Korea
| | - DongAhn Yoo
- Interdisciplinary Program in Bioinformatics, Seoul National University, Seoul, South Korea
| | - Youngho Lee
- Interdisciplinary Program in Bioinformatics, Seoul National University, Seoul, South Korea
| | - Minseok Seo
- Department of Computer Convergence Software, Korea University, Sejong, South Korea
| | - Heebal Kim
- Department of Agricultural Biotechnology, and Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, South Korea.,Interdisciplinary Program in Bioinformatics, Seoul National University, Seoul, South Korea.,C&K Genomics Inc., Seoul, South Korea
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7
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Fonseca F, Pénicaud C, Tymczyszyn EE, Gómez-Zavaglia A, Passot S. Factors influencing the membrane fluidity and the impact on production of lactic acid bacteria starters. Appl Microbiol Biotechnol 2019; 103:6867-6883. [DOI: 10.1007/s00253-019-10002-1] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Revised: 06/25/2019] [Accepted: 06/27/2019] [Indexed: 01/09/2023]
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8
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Gaucher F, Bonnassie S, Rabah H, Marchand P, Blanc P, Jeantet R, Jan G. Review: Adaptation of Beneficial Propionibacteria, Lactobacilli, and Bifidobacteria Improves Tolerance Toward Technological and Digestive Stresses. Front Microbiol 2019; 10:841. [PMID: 31068918 PMCID: PMC6491719 DOI: 10.3389/fmicb.2019.00841] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Accepted: 04/02/2019] [Indexed: 01/15/2023] Open
Abstract
This review deals with beneficial bacteria, with a focus on lactobacilli, propionibacteria, and bifidobacteria. As being recognized as beneficial bacteria, they are consumed as probiotics in various food products. Some may also be used as starters in food fermentation. In either case, these bacteria may be exposed to various environmental stresses during industrial production steps, including drying and storage, and during the digestion process. In accordance with their adaptation to harsh environmental conditions, they possess adaptation mechanisms, which can be induced by pretreatments. Adaptive mechanisms include accumulation of compatible solutes and of energy storage compounds, which can be largely modulated by the culture conditions. They also include the regulation of energy production pathways, as well as the modulation of the cell envelop, i.e., membrane, cell wall, surface layers, and exopolysaccharides. They finally lead to the overexpression of molecular chaperones and of stress-responsive proteases. Triggering these adaptive mechanisms can improve the resistance of beneficial bacteria toward technological and digestive stresses. This opens new perspectives for the improvement of industrial processes efficiency with regard to the survival of beneficial bacteria. However, this bibliographical survey evidenced that adaptive responses are strain-dependent, so that growth and adaptation should be optimized case-by-case.
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Affiliation(s)
- Floriane Gaucher
- STLO, Agrocampus Ouest, Institut National de la Recherche Agronomique, Paris, France
- Bioprox, Levallois-Perret, France
| | - Sylvie Bonnassie
- STLO, Agrocampus Ouest, Institut National de la Recherche Agronomique, Paris, France
- Science de la Vie et de la Terre, Université de Rennes 1, Rennes, France
| | - Houem Rabah
- STLO, Agrocampus Ouest, Institut National de la Recherche Agronomique, Paris, France
- Pôle Agronomique Ouest, Bba, Rennes, France
| | | | | | - Romain Jeantet
- STLO, Agrocampus Ouest, Institut National de la Recherche Agronomique, Paris, France
| | - Gwénaël Jan
- STLO, Agrocampus Ouest, Institut National de la Recherche Agronomique, Paris, France
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9
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Li P, Tian W, Jiang Z, Liang Z, Wu X, Du B. Genomic Characterization and Probiotic Potency of Bacillus sp. DU-106, a Highly Effective Producer of L-Lactic Acid Isolated From Fermented Yogurt. Front Microbiol 2018; 9:2216. [PMID: 30294310 PMCID: PMC6158304 DOI: 10.3389/fmicb.2018.02216] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Accepted: 08/30/2018] [Indexed: 01/23/2023] Open
Abstract
Bacillus sp. DU-106, a newly isolated member of Bacillus cereus group, exhibits the predominant ability to produce L-lactic acid. The probiotic potency of test strain revealed its survivability at acidic pH, bile salts and viability in simulated gastric juice in vitro. The acute oral toxicity test indicated its no toxicity to laboratory mice in vivo. We further determined the complete genome of strain DU-106 to understand genetic basis as a potential probiotic. It has a circular chromosome and three plasmids for a total genome 5,758,208 bp in size with a G + C content of 35.10%. Genes associated with lactate synthesis were found in the DU-106 genome. We also annotated various stress-related, bile salt resistance, and adhesion-related domains in this strain, which likely provide support in exerting probiotic action by enabling adhesion to host epithelial cells and survival under gastrointestinal tract. Moreover, strain DU-106 genome lacks the virulence genes encodes cereulide synthetase, enterotoxin FM, and cytotoxin K. These phenotypic and genomic probiotic potencies facilitate its potential candidate as probiotic starter in food industry.
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Affiliation(s)
- Pan Li
- College of Food Science, South China Agricultural University, Guangzhou, China
| | - Wenni Tian
- College of Food Science, South China Agricultural University, Guangzhou, China
| | - Zhuo Jiang
- College of Food Science, South China Agricultural University, Guangzhou, China
| | - Zuanhao Liang
- College of Food Science, South China Agricultural University, Guangzhou, China
| | - Xueyin Wu
- College of Food Science, South China Agricultural University, Guangzhou, China
| | - Bing Du
- College of Food Science, South China Agricultural University, Guangzhou, China
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10
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Wang W, He J, Pan D, Wu Z, Guo Y, Zeng X, Lian L. Metabolomics analysis of Lactobacillus plantarum ATCC 14917 adhesion activity under initial acid and alkali stress. PLoS One 2018; 13:e0196231. [PMID: 29795550 PMCID: PMC5967736 DOI: 10.1371/journal.pone.0196231] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2017] [Accepted: 04/09/2018] [Indexed: 12/25/2022] Open
Abstract
The adhesion ability of Lactobacillus plantarum affects retention time in the human gastro-intestinal tract, as well as influencing the interaction with their host. In this study, the relationship between the adhesion activity of, and metabolic changes in, L. plantarum ATCC 14917 under initial acid and alkali stress was evaluated by analyzing auto-aggregation, protein adhesion and cell adhesion in vitro. Based on scanning electron microscope (SEM) and transmission electron microscope (TEM) analysis, the morphology of the bacteria became thickset and the thickness of their cell walls decreased under initial alkali stress. The fold changes of auto-aggregation, adhere to mucin and HT-29 cell lines of L. plantarum ATCC 14917 in the acid group were increased by 1.141, 1.125 and 1.156, respectively. But decreased significantly in the alkali group (fold changes with 0.842, 0.728 and 0.667). Adhesion-related protein increased in the acid group but declined in the alkali group at the mRNA expression level according to real time polymerase chain reaction (RT-PCR) analysis. The changes in the metabolite profiles of L. plantarum ATCC 14917 were characterized using Ultra-Performance Liquid Chromatography-Electrospray ionization-Quadrupole-Time of Flight-mass spectrometry (UPLS-ESI-Q-TOF-MS). In the alkali group, the content of a lot of substances involved in the energy and amino acid metabolism decreased, but the content of some substances involved in the energy metabolism was slightly increased in the acid group. These findings demonstrate that energy metabolism is positively correlated with the adhesion ability of L. plantarum ATCC 14917. The amino-acids metabolism, especially the amino acids related to pH-homeostasis mechanisms (lysine, aspartic acid, arginine, proline and glutamic acid), showed an obvious effect on the adhesion ability of L. plantarum ATCC 14917. This investigation provides a better understanding of L. plantarum's adhesion mechanisms under initial pH stress.
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Affiliation(s)
- Wenwen Wang
- Key Laboratory of Animal Protein Deep Processing Technology of Zhejiang, Marine Science School, Ningbo University, Ningbo, Zhejiang, P. R. China
| | - Jiayi He
- Key Laboratory of Animal Protein Deep Processing Technology of Zhejiang, Marine Science School, Ningbo University, Ningbo, Zhejiang, P. R. China
| | - Daodong Pan
- Key Laboratory of Animal Protein Deep Processing Technology of Zhejiang, Marine Science School, Ningbo University, Ningbo, Zhejiang, P. R. China
- Department of Food Science and Nutrition, Ginling College, Nanjing Normal University, Nanjing, P. R. China
- * E-mail: (DDP); (ZW)
| | - Zhen Wu
- Key Laboratory of Animal Protein Deep Processing Technology of Zhejiang, Marine Science School, Ningbo University, Ningbo, Zhejiang, P. R. China
- * E-mail: (DDP); (ZW)
| | - Yuxing Guo
- Department of Food Science and Nutrition, Ginling College, Nanjing Normal University, Nanjing, P. R. China
| | - Xiaoqun Zeng
- Key Laboratory of Animal Protein Deep Processing Technology of Zhejiang, Marine Science School, Ningbo University, Ningbo, Zhejiang, P. R. China
| | - Liwei Lian
- Ningbo Dairy Group, Ningbo, Zhejiang, China
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11
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Phospholipid composition of the outer membrane of Escherichia coli influences its susceptibility against antimicrobial peptide apidaecin 1b. Diagn Microbiol Infect Dis 2018; 90:316-323. [DOI: 10.1016/j.diagmicrobio.2017.11.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Revised: 11/08/2017] [Accepted: 11/11/2017] [Indexed: 12/30/2022]
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12
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Deuscher Z, Bonny JM, Boué F, Cheynier V, Clerjon S, Devaux MF, Meneghel J, Guillon F, Jamme F, Le Feunteun S, Passot S, Réfrégiers M, Rogniaux H, Ropartz D, Thévenot J, Vallverdu-Queralt A, Canon F. Selected case studies presenting advanced methodologies to study food and chemical industry materials: From the structural characterization of raw materials to the multisensory integration of food. INNOV FOOD SCI EMERG 2018. [DOI: 10.1016/j.ifset.2017.10.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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13
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Chen MJ, Tang HY, Chiang ML. Effects of heat, cold, acid and bile salt adaptations on the stress tolerance and protein expression of kefir-isolated probiotic Lactobacillus kefiranofaciens M1. Food Microbiol 2017; 66:20-27. [DOI: 10.1016/j.fm.2017.03.020] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Revised: 03/23/2017] [Accepted: 03/28/2017] [Indexed: 01/01/2023]
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14
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Subcellular membrane fluidity of Lactobacillus delbrueckii subsp. bulgaricus under cold and osmotic stress. Appl Microbiol Biotechnol 2017; 101:6907-6917. [DOI: 10.1007/s00253-017-8444-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Revised: 07/16/2017] [Accepted: 07/19/2017] [Indexed: 01/10/2023]
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15
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Amund O. Exploring the relationship between exposure to technological and gastrointestinal stress and probiotic functional properties of lactobacilli and bifidobacteria. Can J Microbiol 2016; 62:715-25. [DOI: 10.1139/cjm-2016-0186] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Strains of Lactobacillus and Bifidobacterium are considered probiotic because of their associated potential health benefits. Probiotics are commonly administered orally via incorporation into food products. Microorganisms for use as probiotics encounter stress conditions, which include acid, bile, osmotic, oxidative, heat and cold stresses. These can occur during processing and storage and during passage through the gastrointestinal tract, and can affect viability. Probiotic bacteria have to remain viable to confer any health benefits. Therefore, the ability to withstand technological and gastrointestinal stresses is crucial probiotic selection criteria. While the stress tolerance mechanisms of lactobacilli and bifidobacteria are largely understood, the impact of exposure to stressful conditions on the functional properties of surviving probiotic microorganisms is not clear. This review explores the potentially positive and negative relationships between exposure to stress conditions and probiotic functional properties, such as resistance to gastric acid and bile, adhesion and colonization potential, and tolerance to antibiotics. Protective strategies can be employed to combat negative effects of stress on functional properties. However, further research is needed to ascertain synergistic relationships between exposure to stress and probiotic properties.
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Affiliation(s)
- O.D. Amund
- School of Life Sciences, Faculty of Health and Life Sciences, Coventry University, Priory Street, Coventry CV1 5FB, UK
- School of Life Sciences, Faculty of Health and Life Sciences, Coventry University, Priory Street, Coventry CV1 5FB, UK
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16
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Gandhi A, Shah NP. Effect of salt stress on morphology and membrane composition of Lactobacillus acidophilus, Lactobacillus casei, and Bifidobacterium bifidum, and their adhesion to human intestinal epithelial-like Caco-2 cells. J Dairy Sci 2016; 99:2594-2605. [DOI: 10.3168/jds.2015-10718] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Accepted: 12/30/2015] [Indexed: 11/19/2022]
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17
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Zhai Z, An H, Wang G, Luo Y, Hao Y. Functional role of pyruvate kinase from Lactobacillus bulgaricus in acid tolerance and identification of its transcription factor by bacterial one-hybrid. Sci Rep 2015; 5:17024. [PMID: 26581248 PMCID: PMC4652205 DOI: 10.1038/srep17024] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Accepted: 10/23/2015] [Indexed: 12/17/2022] Open
Abstract
Lactobacillus delbrueckii subsp. bulgaricus develops acid tolerance response when subjected to acid stress conditions, such as the induction of enzymes associated with carbohydrate metabolism. In this study, pyk gene encoding pyruvate kinase was over-expressed in heterologous host Lactococcus lactis NZ9000, and SDS-PAGE analysis revealed the successful expression of this gene in NZ9000. The survival rate of Pyk-overproducing strain was 45-fold higher than the control under acid stress condition (pH 4.0). In order to determine the transcription factor (TF) which regulates the expression of pyk by bacterial one-hybrid, we constructed a TF library including 65 TFs of L. bulgaricus. Western blotting indicated that TFs in this library could be successfully expressed in host strains. Subsequently, the promoter of pfk-pyk operon in L. bulgaricus was identified by 5′-RACE PCR. The bait plasmid pH3U3-p01 carrying the deletion fragment of pfk-pyk promoter captured catabolite control protein A (CcpA) which could regulate the expression of pyk by binding to a putative catabolite-responsive element (5′-TGTAAGCCCTAACA-3′) upstream the -35 region. Real-time qPCR analysis revealed the transcription of pyk was positively regulated by CcpA. This is the first report about identifying the TF of pyk in L. bulgaricus, which will provide new insight into the regulatory network.
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Affiliation(s)
- Zhengyuan Zhai
- Key Laboratory of Functional Dairy, Co-constructed by Ministry of Education and Beijing Municipality, College of Food Science &Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Haoran An
- Key Laboratory of Functional Dairy, Co-constructed by Ministry of Education and Beijing Municipality, College of Food Science &Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Guohong Wang
- Key Laboratory of Functional Dairy, Co-constructed by Ministry of Education and Beijing Municipality, College of Food Science &Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Yunbo Luo
- Key Laboratory of Functional Dairy, Co-constructed by Ministry of Education and Beijing Municipality, College of Food Science &Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Yanling Hao
- Key Laboratory of Functional Dairy, Co-constructed by Ministry of Education and Beijing Municipality, College of Food Science &Nutritional Engineering, China Agricultural University, Beijing 100083, China
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Mazzeo MF, Lippolis R, Sorrentino A, Liberti S, Fragnito F, Siciliano RA. Lactobacillus acidophilus-Rutin Interplay Investigated by Proteomics. PLoS One 2015; 10:e0142376. [PMID: 26544973 PMCID: PMC4636146 DOI: 10.1371/journal.pone.0142376] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2015] [Accepted: 10/21/2015] [Indexed: 11/24/2022] Open
Abstract
Dietary polyphenols are bioactive molecules that beneficially affect human health, due to their anti-oxidant, anti-inflammatory, cardio-protective and chemopreventive properties. They are absorbed in a very low percentage in the small intestine and reach intact the colon, where they are metabolized by the gut microbiota. Although it is well documented a key role of microbial metabolism in the absorption of polyphenols and modulation of their biological activity, molecular mechanisms at the basis of the bacteria-polyphenols interplay are still poorly understood. In this context, differential proteomics was applied to reveal adaptive response mechanisms that enabled a potential probiotic Lactobacillus acidophilus strain to survive in the presence of the dietary polyphenol rutin. The response to rutin mainly modulated the expression level of proteins involved in general stress response mechanisms and, in particular, induced the activation of protein quality control systems, and affected carbohydrate and amino acid metabolism, protein synthesis and cell wall integrity. Moreover, rutin triggered the expression of proteins involved in oxidation-reduction processes.This study provides a first general view of the impact of dietary polyphenols on metabolic and biological processes of L. acidophilus.
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Affiliation(s)
| | - Rosa Lippolis
- Institute of Biomembranes and Bioenergetics, National Research Council, Bari, Italy
| | - Alida Sorrentino
- Institute of Food Sciences, National Research Council, Avellino, Italy
| | - Sarah Liberti
- Institute of Food Sciences, National Research Council, Avellino, Italy
- Department of Chemical Sciences, University of Naples Federico II, Naples, Italy
| | - Federica Fragnito
- Institute of Food Sciences, National Research Council, Avellino, Italy
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Li C, Sun J, Qi X, Liu L. NaCl stress impact on the key enzymes in glycolysis from Lactobacillus bulgaricus during freeze-drying. Braz J Microbiol 2015; 46:1193-9. [PMID: 26691481 PMCID: PMC4704629 DOI: 10.1590/s1517-838246420140595] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Accepted: 02/02/2015] [Indexed: 11/22/2022] Open
Abstract
The viability of Lactobacillus bulgaricus in freeze-drying is of significant commercial interest to dairy industries. In the study, L.bulgaricus demonstrated a significantly improved (p < 0.05) survival rate during freeze-drying when subjected to a pre-stressed period under the conditions of 2% (w/v) NaCl for 2 h in the late growth phase. The main energy source for the life activity of lactic acid bacteria is related to the glycolytic pathway. To investigate the phenomenon of this stress-related viability improvement in L. bulgaricus, the activities and corresponding genes of key enzymes in glycolysis during 2% NaCl stress were studied. NaCl stress significantly enhanced (p < 0.05) glucose utilization. The activities of glycolytic enzymes (phosphofructokinase, pyruvate kinase, and lactate dehydrogenase) decreased during freeze-drying, and NaCl stress were found to improve activities of these enzymes before and after freeze-drying. However, a transcriptional analysis of the corresponding genes suggested that the effect of NaCl stress on the expression of the pfk2 gene was not obvious. The increased survival of freeze-dried cells of L. bulgaricus under NaCl stress might be due to changes in only the activity or translation level of these enzymes in different environmental conditions but have no relation to their mRNA transcription level.
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Affiliation(s)
- Chun Li
- Ministry of Education, College of Food Science, Key Laboratory of Dairy Science, Northeast Agricultural University, Harbin, China
| | - Jinwei Sun
- Ministry of Education, College of Food Science, Key Laboratory of Dairy Science, Northeast Agricultural University, Harbin, China
| | - Xiaoxi Qi
- Ministry of Education, College of Food Science, Key Laboratory of Dairy Science, Northeast Agricultural University, Harbin, China
| | - Libo Liu
- Ministry of Education, College of Food Science, Key Laboratory of Dairy Science, Northeast Agricultural University, Harbin, China
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Ma Z, Tan Y, Cui G, Feng Y, Cui Q, Song X. Transcriptome and gene expression analysis of DHA producer Aurantiochytrium under low temperature conditions. Sci Rep 2015; 5:14446. [PMID: 26403200 PMCID: PMC4585886 DOI: 10.1038/srep14446] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Accepted: 08/28/2015] [Indexed: 01/05/2023] Open
Abstract
Aurantiochytrium is a promising docosahexaenoic acid (DHA) production candidate due to its fast growth rate and high proportions of lipid and DHA content. In this study, high-throughput RNA sequencing technology was employed to explore the acclimatization of this DHA producer under cold stress at the transcriptional level. The overall de novo assembly of the cDNA sequence data generated 29,783 unigenes, with an average length of 1,200 bp. In total, 13,245 unigenes were annotated in at least one database. A comparative genomic analysis between normal conditions and cold stress revealed that 2,013 genes were differentially expressed during the growth stage, while 2,071 genes were differentially expressed during the lipid accumulation stage. Further functional categorization and analyses showed some differentially expressed genes were involved in processes crucial to cold acclimation, such as signal transduction, cellular component biogenesis, and carbohydrate and lipid metabolism. A brief survey of the transcripts obtained in response to cold stress underlines the survival strategy of Aurantiochytrium; of these transcripts, many directly or indirectly influence the lipid composition. This is the first study to perform a transcriptomic analysis of the Aurantiochytrium under low temperature conditions. Our results will help to enhance DHA production by Aurantiochytrium in the future.
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Affiliation(s)
- Zengxin Ma
- Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, Shandong, China
- Qingdao Engineering Laboratory of Single Cell Oil, Qingdao, Shandong, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Yanzhen Tan
- Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, Shandong, China
- Qingdao Engineering Laboratory of Single Cell Oil, Qingdao, Shandong, China
| | - Guzhen Cui
- Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, Shandong, China
- Qingdao Engineering Laboratory of Single Cell Oil, Qingdao, Shandong, China
| | - Yingang Feng
- Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, Shandong, China
- Qingdao Engineering Laboratory of Single Cell Oil, Qingdao, Shandong, China
| | - Qiu Cui
- Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, Shandong, China
- Key Laboratory of Biofuels, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, Shandong, China
- Qingdao Engineering Laboratory of Single Cell Oil, Qingdao, Shandong, China
| | - Xiaojin Song
- Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, Shandong, China
- Qingdao Engineering Laboratory of Single Cell Oil, Qingdao, Shandong, China
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Hansen MLRW, Clausen A, Ejsing CS, Risbo J. Modulation of the Lactobacillus acidophilus La-5 lipidome by different growth conditions. MICROBIOLOGY-SGM 2015. [PMID: 26197785 DOI: 10.1099/mic.0.000145] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Probiotics are bacteria used in the food industry due to their potential health benefits. In this study, the plasma membrane of the probiotic Lactobacillus acidophilus La-5 was investigated using state-of-the-art high-resolution shotgun lipidomics. Comparisons of the lipidome of the plasma membrane were done after altering the fatty acid composition by supplementing L. acidophilus La-5 with saturated, mono-, di- and tri-unsaturated fatty acids during fermentation. The plasma membrane with the highest degree of saturation resulted in a lipid composition with the highest proportion of cardiolipin (CL) and lowest proportion of monolysocardiolipin (MLCL). No significant changes were found for other lipid classes. The bacteria grown with di- and tri-unsaturated fatty acids were expected to have more unsaturated plasma membranes than bacteria grown with mono-unsaturated fatty acids. This was also the case for MLCL, but the numbers of double bonds for CL were quite similar for these three samples. The results indicate that L. acidophilus La-5 possesses a molecular mechanism for remodelling and optimizing the fatty acid composition of CL and MLCL species and the molar ratio of CL and MLCL. This study contributes new knowledge on the previously uninvestigated lipidome of L. acidophilus La-5.
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Affiliation(s)
| | | | - Christer S Ejsing
- Department of Biochemistry and Molecular Biology, VILLUM Center for Bioanalytical Sciences, University of Southern Denmark, Denmark
| | - Jens Risbo
- Department of Food Science, University of Copenhagen, Denmark
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22
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Haddaji N, Khouadja S, Fdhila K, Krifi B, Ben Ismail M, Lagha R, Bakir K, Bakhrouf A. Acid stress suggests different determinants for polystyrene and HeLa cell adhesion in Lactobacillus casei. J Dairy Sci 2015; 98:4302-9. [DOI: 10.3168/jds.2014-9198] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2014] [Accepted: 04/06/2015] [Indexed: 02/02/2023]
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23
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Goto S, Kawamoto J, Sato SB, Iki T, Watanabe I, Kudo K, Esaki N, Kurihara T. Alkyl hydroperoxide reductase enhances the growth of Leuconostoc mesenteroides lactic acid bacteria at low temperatures. AMB Express 2015; 5:11. [PMID: 25852988 PMCID: PMC4384994 DOI: 10.1186/s13568-015-0098-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2014] [Accepted: 01/20/2015] [Indexed: 11/21/2022] Open
Abstract
Lactic acid bacteria (LAB) can cause deterioration of food quality even at low temperatures. In this study, we investigated the cold-adaptation mechanism of a novel food spoilage LAB, Leuconostoc mesenteroides NH04 (NH04). L. mesenteroides was isolated from several spoiled cooked meat products at a high frequency in our factories. NH04 grew rapidly at low temperatures within the shelf-life period and resulted in heavy financial losses. NH04 grew more rapidly than related strains such as Leuconostoc mesenteroides NBRC3832 (NBRC3832) at 10°C. Proteome analysis of NH04 demonstrated that this strain produces a homolog of alkyl hydroperoxide reductase––AhpC––the expression of which can be induced at low temperatures. The expression level of AhpC in NH04 was approximately 6-fold higher than that in NBRC3832, which was grown under the same conditions. Although AhpC is known to have an anti-oxidative role in various bacteria by catalyzing the reduction of alkyl hydroperoxide and hydrogen peroxide, the involvement of AhpC in cold adaptation of food spoilage bacteria was unclear. We introduced an expression plasmid containing ahpC into NBRC3832, which grows slower than NH04 at 10°C, and found that expression of AhpC enhanced growth. These results demonstrated that AhpC, which likely increases anti-oxidative capacity of LAB, plays an important role in their rapid growth at low temperatures.
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Velly H, Bouix M, Passot S, Penicaud C, Beinsteiner H, Ghorbal S, Lieben P, Fonseca F. Cyclopropanation of unsaturated fatty acids and membrane rigidification improve the freeze-drying resistance of Lactococcus lactis subsp. lactis TOMSC161. Appl Microbiol Biotechnol 2014; 99:907-18. [DOI: 10.1007/s00253-014-6152-2] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2014] [Accepted: 10/09/2014] [Indexed: 11/29/2022]
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25
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Zhao D, Shah NP. Influence of tea extract supplementation on bifidobacteria during soymilk fermentation. Int J Food Microbiol 2014; 188:36-44. [DOI: 10.1016/j.ijfoodmicro.2014.07.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2014] [Revised: 06/09/2014] [Accepted: 07/13/2014] [Indexed: 10/25/2022]
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26
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Proteomic analysis of the response to NaCl stress of Lactobacillus bulgaricus. Biotechnol Lett 2014; 36:2263-9. [DOI: 10.1007/s10529-014-1601-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2014] [Accepted: 06/17/2014] [Indexed: 10/25/2022]
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27
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Shao Y, Gao S, Guo H, Zhang H. Influence of culture conditions and preconditioning on survival of Lactobacillus delbrueckii subspecies bulgaricus ND02 during lyophilization. J Dairy Sci 2014; 97:1270-80. [DOI: 10.3168/jds.2013-7536] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2013] [Accepted: 11/08/2013] [Indexed: 11/19/2022]
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28
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Nguyen HTH, Ong L, Kentish SE, Gras SL. The Effect of Fermentation Temperature on the Microstructure, Physicochemical and Rheological Properties of Probiotic Buffalo Yoghurt. FOOD BIOPROCESS TECH 2014. [DOI: 10.1007/s11947-014-1278-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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29
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Zhang J, Li Y, Chen W, Du GC, Chen J. Glutathione improves the cold resistance of Lactobacillus sanfranciscensis by physiological regulation. Food Microbiol 2012; 31:285-92. [PMID: 22608235 DOI: 10.1016/j.fm.2012.04.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2011] [Revised: 04/01/2012] [Accepted: 04/03/2012] [Indexed: 10/28/2022]
Abstract
The microenvironmental manipulation of glutathione (GSH) on improving cold resistance of Lactobacillus sanfranciscensis DSM 20451(T) was investigated in this study. It was proved that GSH relieves the metabolic disorder of cells under cold stress, and prevents the decreased activities of related key enzymes such as pyruvate kinase (PK), glyceraldehyde-3-phosphate dehydrogenase (GAPDH) and lactate dehydrogenase (LDH) upon cold challenges. Higher intracellular ATP level was also found in cells with GSH under cold stress. Moreover, cells with imported GSH had significantly higher intracellular than the control during cold treatment. In addition, proteomics analysis showed more exciting findings that the protective function of GSH under cold stress was related to metabolic regulation and the multi-control against induced cross-stresses. These results broaden the knowledge about the physiological function of GSH, and suggest a practicable approach to improve the cold resistance of L. sanfranciscensis, a starter culture for sourdough, by the addition of GSH.
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Affiliation(s)
- Juan Zhang
- State Key Laboratory of Food Science and Technology, Jiangnan University, China
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30
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Mills S, Stanton C, Fitzgerald GF, Ross RP. Enhancing the stress responses of probiotics for a lifestyle from gut to product and back again. Microb Cell Fact 2011; 10 Suppl 1:S19. [PMID: 21995734 PMCID: PMC3231925 DOI: 10.1186/1475-2859-10-s1-s19] [Citation(s) in RCA: 103] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Before a probiotic bacterium can even begin to fulfill its biological role, it must survive a battery of environmental stresses imposed during food processing and passage through the gastrointestinal tract (GIT). Food processing stresses include extremes in temperature, as well as osmotic, oxidative and food matrix stresses. Passage through the GIT is a hazardous journey for any bacteria with deleterious lows in pH encountered in the stomach to the detergent-like properties of bile in the duodenum. However, bacteria are equipped with an array of defense mechanisms to counteract intracellular damage or to enhance the robustness of the cell to withstand lethal external environments. Understanding these mechanisms in probiotic bacteria and indeed other bacterial groups has resulted in the development of a molecular toolbox to augment the technological and gastrointestinal performance of probiotics. This has been greatly aided by studies which examine the global cellular responses to stress highlighting distinct regulatory networks and which also identify novel mechanisms used by cells to cope with hazardous environments. This review highlights the latest studies which have exploited the bacterial stress response with a view to producing next-generation probiotic cultures and highlights the significance of studies which view the global bacterial stress response from an integrative systems biology perspective.
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Affiliation(s)
- Susan Mills
- Teagasc Food Research Centre, Moorepark, Fermoy, Co, Cork, Ireland
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31
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Roger P, Delettre J, Bouix M, Béal C. Characterization of Streptococcus salivarius growth and maintenance in artificial saliva. J Appl Microbiol 2011; 111:631-41. [PMID: 21672100 DOI: 10.1111/j.1365-2672.2011.05077.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
AIMS To help gain a better understanding of factors influencing the establishment within the oral cavity of Streptococcus salivarius K12, a commensal oral bacterium, we characterized its behaviour in artificial saliva. METHODS AND RESULTS Streptococcus salivarius K12 was grown in artificial saliva complemented with a representative meal, under oral pH and temperature conditions. Exponential growth phase was characterized by a high specific growth rate (2.8 h(-1)). During maintenance phase, an uncoupling between growth and lactic acid production occurred, which allowed maintaining viability (95%), intracellular pH (6.6) and membrane polarisation (95%), and thus proton motive force. However, in late stationary phase, viability (64%) and vitality were degraded as a result of lower synthesis of energetic and glycogen-related proteins as compared to a richer medium. CONCLUSIONS Streptococcus salivarius was able to rapidly grow in complemented artificial saliva. Nevertheless, a degradation of its physiological state was observed in late-stationary phase. SIGNIFICANCE AND IMPACT OF THE STUDY This work demonstrates, for the first time, that artificial saliva was a convenient medium that permitted Strep. salivarius to grow in oral conditions (physico-chemical environment, addition of meals) but not to maintain cellular viability and vitality in starvation conditions.
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Affiliation(s)
- P Roger
- AgroParisTech, INRA, UMR782, Thiverval-Grignon, France
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32
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Kurdrid P, Senachak J, Sirijuntarut M, Yutthanasirikul R, Phuengcharoen P, Jeamton W, Roytrakul S, Cheevadhanarak S, Hongsthong A. Comparative analysis of the Spirulina platensis subcellular proteome in response to low- and high-temperature stresses: uncovering cross-talk of signaling components. Proteome Sci 2011; 9:39. [PMID: 21756373 PMCID: PMC3162491 DOI: 10.1186/1477-5956-9-39] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2011] [Accepted: 07/15/2011] [Indexed: 11/23/2022] Open
Abstract
The present study focused on comparative proteome analyses of low- and high-temperature stresses and potential protein-protein interaction networks, constructed by using a bioinformatics approach, in response to both stress conditions. The data revealed two important points: first, the results indicate that low-temperature stress is tightly linked with oxidative stress as well as photosynthesis; however, no specific mechanism is revealed in the case of the high-temperature stress response. Second, temperature stress was revealed to be linked with nitrogen and ammonia assimilation. Moreover, the data also highlighted the cross-talk of signaling pathways. Some of the detected signaling proteins, e.g., Hik14, Hik26 and Hik28, have potential interactions with differentially expressed proteins identified in both temperature stress conditions. Some differentially expressed proteins found in the Spirulina protein-protein interaction network were also examined for their physical interactions by a yeast two hybrid system (Y2H). The Y2H results obtained in this study suggests that the potential PPI network gives quite reliable potential interactions for Spirulina. Therefore, the bioinformatics approach employed in this study helps in the analysis of phenomena where proteome analyses of knockout mutants have not been carried out to directly examine for specificity or cross-talk of signaling components.
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Affiliation(s)
- Pavinee Kurdrid
- BEC Unit, National Center for Genetic Engineering and Biotechnology, 49 Soi Theintalay 25, Thakham, Bangkhuntien, Bangkok, 10150, Thailand
| | - Jittisak Senachak
- BEC Unit, National Center for Genetic Engineering and Biotechnology, 49 Soi Theintalay 25, Thakham, Bangkhuntien, Bangkok, 10150, Thailand
| | - Matura Sirijuntarut
- Pilot Plant Development and Training Institute, King Mongkut's University of Technology Thonburi, 49 Soi Theintalay 25, Thakham, Bangkhuntien, Bangkok, 10150, Thailand
| | - Rayakorn Yutthanasirikul
- Pilot Plant Development and Training Institute, King Mongkut's University of Technology Thonburi, 49 Soi Theintalay 25, Thakham, Bangkhuntien, Bangkok, 10150, Thailand
| | - Phuttawadee Phuengcharoen
- Pilot Plant Development and Training Institute, King Mongkut's University of Technology Thonburi, 49 Soi Theintalay 25, Thakham, Bangkhuntien, Bangkok, 10150, Thailand
| | - Wattana Jeamton
- Pilot Plant Development and Training Institute, King Mongkut's University of Technology Thonburi, 49 Soi Theintalay 25, Thakham, Bangkhuntien, Bangkok, 10150, Thailand
| | - Sittiruk Roytrakul
- BEC Unit, National Center for Genetic Engineering and Biotechnology, 49 Soi Theintalay 25, Thakham, Bangkhuntien, Bangkok, 10150, Thailand
| | - Supapon Cheevadhanarak
- School of Bioresources and Technology, King Mongkut's University of Technology Thonburi, 49 Soi Theintalay 25, Thakham, Bangkhuntien, Bangkok, 10150, Thailand
| | - Apiradee Hongsthong
- BEC Unit, National Center for Genetic Engineering and Biotechnology, 49 Soi Theintalay 25, Thakham, Bangkhuntien, Bangkok, 10150, Thailand
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Gorissen L, Weckx S, Vlaeminck B, Raes K, De Vuyst L, De Smet S, Leroy F. Linoleate isomerase activity occurs in lactic acid bacteria strains and is affected by pH and temperature. J Appl Microbiol 2011; 111:593-606. [DOI: 10.1111/j.1365-2672.2011.05087.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Mykytczuk NCS, Trevors JT, Foote SJ, Leduc LG, Ferroni GD, Twine SM. Proteomic insights into cold adaptation of psychrotrophic and mesophilic Acidithiobacillus ferrooxidans strains. Antonie Van Leeuwenhoek 2011; 100:259-77. [DOI: 10.1007/s10482-011-9584-z] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2011] [Accepted: 04/29/2011] [Indexed: 11/29/2022]
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35
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Rault A, Bouix M, Béal C. Cryotolerance of Lactobacillus delbrueckii subsp. bulgaricus CFL1 is influenced by the physiological state during fermentation. Int Dairy J 2010. [DOI: 10.1016/j.idairyj.2010.05.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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36
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Streit F, Athès V, Bchir A, Corrieu G, Béal C. Microfiltration conditions modify Lactobacillus bulgaricus cryotolerance in response to physiological changes. Bioprocess Biosyst Eng 2010; 34:197-204. [DOI: 10.1007/s00449-010-0461-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2010] [Accepted: 08/04/2010] [Indexed: 11/29/2022]
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37
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Synthesis of cyclopropane fatty acid and its effect on freeze-drying survival of Lactobacillus bulgaricus L2 at different growth conditions. World J Microbiol Biotechnol 2009. [DOI: 10.1007/s11274-009-0060-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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38
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Gagnaire V, Jardin J, Jan G, Lortal S. Invited review: Proteomics of milk and bacteria used in fermented dairy products: From qualitative to quantitative advances. J Dairy Sci 2009; 92:811-25. [DOI: 10.3168/jds.2008-1476] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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39
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Hongsthong A, Sirijuntarut M, Prommeenate P, Lertladaluck K, Porkaew K, Cheevadhanarak S, Tanticharoen M. Proteome analysis at the subcellular level of the cyanobacterium Spirulina platensis in response to low-temperature stress conditions. FEMS Microbiol Lett 2009; 288:92-101. [PMID: 18764876 DOI: 10.1111/j.1574-6968.2008.01330.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
The present study addresses the differential expression of Spirulina platensis proteins detected during cold-induced stress, analyzed at the subcellular level. In performing differential expression analysis, the results revealed upregulated proteins in every subcellular fraction, including two-component response systems, DNA repair, molecular chaperones, stress-induced proteins and proteins involved in other biological processes such as secretion systems and nitrogen assimilation. The chlorophyll biosynthetic proteins, protochlorophyllide oxidoreductase and ChlI, had unique expression patterns as detected in the thylakoid membrane; the levels of these proteins immediately decreased during the first 45 min of low-temperature exposure. In contrast, their expression levels significantly increased after low-temperature exposure, indicating the relevance of the chlorophyll biosynthesis in Spirulina in response to low-temperature stress in the light condition. In addition, this is the first report in which genome-based protein identification in S. platensis by peptide mass fingerprinting was performed using the database derived from the unpublished Spirulina genome sequence.
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Streit F, Delettre J, Corrieu G, Béal C. Acid adaptation ofLactobacillus delbrueckiisubsp.bulgaricusinduces physiological responses at membrane and cytosolic levels that improves cryotolerance. J Appl Microbiol 2008; 105:1071-80. [DOI: 10.1111/j.1365-2672.2008.03848.x] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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41
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Streit F, Corrieu G, Béal C. Effect of Centrifugation Conditions on the Cryotolerance of Lactobacillus bulgaricus CFL1. FOOD BIOPROCESS TECH 2008. [DOI: 10.1007/s11947-008-0067-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Schoug Å, Fischer J, Heipieper HJ, Schnürer J, Håkansson S. Impact of fermentation pH and temperature on freeze-drying survival and membrane lipid composition of Lactobacillus coryniformis Si3. J Ind Microbiol Biotechnol 2007; 35:175-81. [DOI: 10.1007/s10295-007-0281-x] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2007] [Accepted: 11/09/2007] [Indexed: 11/29/2022]
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Oh JY, Kim MK, Shin KS, Shin MS, Wee WR, Lee JH, Ko SM, Lee JL. Efficient Cryopreservative Conditions for Cultivated Limbal and Conjunctival Epithelial Cells. Cornea 2007; 26:840-6. [PMID: 17667619 DOI: 10.1097/ico.0b013e318073c1ed] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE To examine the effects of cryopreservation on the viability of cultivated corneal limbal and conjunctival epithelial cells and to evaluate the optimal conditions for cryopreservation. METHODS The cultivated human limbal epithelial cells (HLECs) were stored in media including 20%, 50%, and 90% fetal bovine serum (FBS) and 10% dimethyl sulfoxide (DMSO) at -196 degrees C for 1 week. The cultivated rabbit conjunctival epithelial cells were stored in 10%, 20%, and 50% FBS with 10% glycerol or DMSO as a cryoprotectant at -196 degrees C for 1 week. After thawing, cell viability was assessed using the trypan blue vital staining and 3-[4,5-dimethylthiazol-2-yl]-2,5-dephenyl tetrazolium bromide (MTT) assay. Immunofluorescent staining was performed with cytokeratin 3/12 antibody. Colony-forming efficiency (CFE) was evaluated 2 weeks after culture. RESULTS HLECs cryopreserved with 50% FBS showed the highest cell viability, whereas those with 20% FBS revealed the lowest survival rate (87.1% +/- 0.8% and 79.8% +/- 4.01%, respectively; P = 0.030). CFE of HLECs was 2.13 +/- 1.35%, 2.31 +/- 2.23%, and 1.94 +/- 0.72% in cells with 20%, 50%, and 90% FBS, respectively (P > 0.05). For conjunctival epithelial cells, the cell viability was the highest with 50% FBS and 10% glycerol (95.0% +/- 4.27%), and the lowest survival rate was observed in the condition of 10% FBS and 10% DMSO (80.0% +/- 5.49%). CFE of cryopreserved conjunctival epithelial cells was 14.1% +/- 1.9% in cells with 20% FBS and glycerol and 13.5% +/- 2.0% in those with 20% FBS and DMSO (P > 0.05). HLECs expressed CK3/12 after cryopreservation in all conditions examined. CONCLUSIONS The best results were yielded by 50% FBS for cell viability in HLECs. Glycerol seems to be superior to DMSO in cell viability of the rabbit conjunctival epithelium after cryopreservation.
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Affiliation(s)
- Joo Youn Oh
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea
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Rivals JP, Béal C, Thammavongs B, Guéguen M, Panoff JM. Cryotolerance of Lactobacillus delbrueckii subsp. bulgaricus CFL1 is modified by acquisition of antibiotic resistance. Cryobiology 2007; 55:19-26. [PMID: 17537423 DOI: 10.1016/j.cryobiol.2007.04.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2006] [Revised: 03/08/2007] [Accepted: 04/12/2007] [Indexed: 11/23/2022]
Abstract
This study aimed to relate the acquisition of different antibiotic resistances and the corresponding physiological responses to cold stress of Lactobacillus delbrueckii subsp. bulgaricus strain CFL1. Six resistant mutants were spontaneously obtained and studied depending on the target of the antibiotic: (i) bacitracin and vancomycin (Bac(R), Van(R), wall synthesis), (ii) novobiocin (Nov(R), DNA replication), and (iii) kanamycin, spiramycin, streptomycin (Kan(R), Spi(R), Str(R), RNA translation). The mutations modified the growth and the cold stress response at three different physiological levels: (i) Van(R) and Spi(R) mutants showed significant lower growth rates compared to the wild type strain. (ii) Van(R) and Bac(R) mutants displayed a slightly higher resistance to a freezing-thawing challenge whereas Str(R) and Spi(R) mutants were more sensitive compared to the wild type. (iii) The recovery of acidification activity after freezing and during frozen storage was improved by considering the Nov(R) strain, but not with the Van(R) and Spi(R) mutants. Thus, acquisition of some antibiotic resistance by spontaneous mutation led to modification of the cold stress response. The hypothesis of a unique cellular thermostat is discussed regarding the diversity of the tested antibiotics.
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Affiliation(s)
- Jean-Paul Rivals
- Laboratoire de Microbiologie Alimentaire, IBFA-ISBIO, Université de Caen Basse-Normandie, 14032 Caen cedex, France.
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Rault A, Béal C, Ghorbal S, Ogier JC, Bouix M. Multiparametric flow cytometry allows rapid assessment and comparison of lactic acid bacteria viability after freezing and during frozen storage. Cryobiology 2007; 55:35-43. [PMID: 17577587 DOI: 10.1016/j.cryobiol.2007.04.005] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2007] [Revised: 04/18/2007] [Accepted: 04/30/2007] [Indexed: 11/30/2022]
Abstract
Freezing is widely used for the long-term preservation of lactic acid bacteria, but often affects their viability and technological properties. Different methods are currently employed to determine bacterial cryotolerance, but they all require several hours or days before achieving results. The aim of this study was to establish the advantages of multiparametric flow cytometry by using two specific fluorescent probes to provide rapid assessment of the viability of four strains of Lactobacillus delbrueckii after freezing and during frozen storage. The relevance of carboxyfluorescein diacetate and propidium iodide to quantify bacterial viability was proven. When bacterial suspensions were simultaneously stained with these two fluorescent probes, three major subpopulations were identified: viable, dead and injured cells. The cryotolerance of four L. delbrueckii strains was evaluated by quantifying the relative percentages of each subpopulation before and after freezing, and throughout one month of storage at -80 degrees C. Results displayed significant differences in the resistance to freezing and frozen storage of the four strains when they were submitted to the same freezing and storage procedures. Whereas resistant strains displayed less than 10% of dead cells after one month of storage, one sensitive strain exhibited more than 50% of dead cells, together with 14% of stressed cells after freezing. Finally, this study proved that multiparametric flow cytometry was a convenient and rapid tool to evaluate the viability of lactic acid bacteria, and was well correlated with plate count results. Moreover, it made it possible to differentiate strains according to their susceptibility to freezing and frozen storage.
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Affiliation(s)
- Aline Rault
- AgroParisTech, INRA, UMR 782 Génie et Microbiologie des Procédés Alimentaires, CBAI, 78850 Thiverval-Grignon, France
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