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Drevin M, Plötz M, Krischek C. Investigation of the Suitability of a Combination of Ethyl-Να-dodecanyl-L-arginat_HCl (LAE) and Starter Culture Bacteria for the Reduction of Bacteria from Fresh Meat of Different Animal Species. Foods 2023; 12:4138. [PMID: 38002195 PMCID: PMC10670078 DOI: 10.3390/foods12224138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 11/10/2023] [Accepted: 11/14/2023] [Indexed: 11/26/2023] Open
Abstract
Meat can be contaminated with (pathogenic) microorganisms during slaughter, dissection and packaging. Therefore, preservation technologies are frequently used to reduce the risk of (fatal) human infections due to the consumption of meat. In this study, we first investigated, if the application of ethyl-Nα-dodecanyl-L-arginate hydrochloride (LAE) and the starter culture bacteria Staphylococcus carnosus and Lactobacillus sakei, either single or in combination, influences the bacteria number on pork, chicken meat and beef, inoculated with Brochothrix (Br.) thermosphacta (all meat species) or Salmonella (S.) Typhimurium (pork), Campylobacter (C.) jejuni (chicken) and Listeria (L.) monocytogenes (beef), before packaging under modified atmosphere and on days 7 and 14 of storage. To evaluate effects of the treatment on the appearance during storage, additionally, the physicochemical parameters color and myoglobin redox form percentages were analyzed. LAE regularly resulted in a significant reduction of the number of all bacteria species on day 1 of storage, whereas up to day 14 of storage, the preservation effect did not persist in nearly all samples, except in the beef with Br. thermosphacta. However, with the starter culture bacteria on day 1, only L. monocytogenes on beef was significantly reduced. Interestingly, on day 7 of storage, this reducing effect was also found with S. Typhimurium on pork. Br. thermosphacta, which was principally not influenced by the starter culture bacteria. The combinatory treatment mainly resulted in no additional effects, except for the S. Typhimurium and Br. thermosphacta results on pork on day 7 and the Br. thermosphacta results on beef on day 14. The physicochemical parameters were not influenced by the single and combinatory treatment. The results indicate that LAE was mainly responsible for the antimicrobial effects and that a combination with starter culture bacteria should be individually evaluated for the meat species.
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Affiliation(s)
| | | | - Carsten Krischek
- Institute of Food Quality and Food Safety, University of Veterinary Medicine Hannover, Foundation, Bischofsholer Damm 15, 30173 Hannover, Germany (M.P.)
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Toomik E, Rood L, Bowman JP, Kocharunchitt C. Microbial spoilage mechanisms of vacuum-packed lamb meat: A review. Int J Food Microbiol 2023; 387:110056. [PMID: 36563532 DOI: 10.1016/j.ijfoodmicro.2022.110056] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 12/04/2022] [Accepted: 12/05/2022] [Indexed: 12/13/2022]
Abstract
Lamb meat is an important export commodity, however chilled vacuum-packed (VP) lamb has approximately half the shelf-life of beef under the same storage conditions. This makes the industry more vulnerable to financial losses due to long shipping times and unexpected spoilage. Understanding the spoilage mechanisms of chilled VP lamb in relation to VP beef is important for developing effective strategies to extend the shelf-life of lamb. This review has discussed various key factors (i.e., pH, fat, and presence of bone) that have effects on microbial spoilage of VP lamb contributing to its shorter shelf-life relative to VP beef. A range of bacterial organisms and their metabolisms in relevance to lamb spoilage are also discussed. The data gap in the literature regarding the potential mechanisms of spoilage in VP red meat is highlighted. This review has provided the current understanding of key factors affecting the shelf-life of VP lamb relative to VP beef. It has also identified key areas of research to further understand the spoilage mechanisms of VP lamb. These include investigating the potential influence of fat and bone (including bone marrow) on the shelf-life, as well as assessing changes in the meat metabolome as the spoilage microbial community is developing using an integrated approach. Such new knowledge would aid the development of effective approaches to extend the shelf-life of VP lamb.
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Affiliation(s)
- Elerin Toomik
- Centre for Food Safety and Innovation, Tasmanian Institute of Agriculture, University of Tasmania, Private Bag 54, Hobart, TAS 7001, Australia.
| | - Laura Rood
- Centre for Food Safety and Innovation, Tasmanian Institute of Agriculture, University of Tasmania, Private Bag 54, Hobart, TAS 7001, Australia
| | - John P Bowman
- Centre for Food Safety and Innovation, Tasmanian Institute of Agriculture, University of Tasmania, Private Bag 54, Hobart, TAS 7001, Australia
| | - Chawalit Kocharunchitt
- Centre for Food Safety and Innovation, Tasmanian Institute of Agriculture, University of Tasmania, Private Bag 54, Hobart, TAS 7001, Australia
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3
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Effect of protective cultures on spoilage bacteria and the quality of vacuum-packaged lamb meat. FOOD BIOSCI 2022. [DOI: 10.1016/j.fbio.2022.102148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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4
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Rood L, Bowman JP, Ross T, Corkrey R, Pagnon J, Kaur M, Kocharunchitt C. Spoilage potential of bacterial species from chilled vacuum-packed lamb. Food Microbiol 2022; 107:104093. [DOI: 10.1016/j.fm.2022.104093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 07/02/2022] [Accepted: 07/12/2022] [Indexed: 11/27/2022]
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Esteves E, Whyte P, Gupta TB, Bolton D. The survival of blown pack spoilage associated Clostridium estertheticum and Clostridium gasigenes spores during the ensiling of grass. FEMS MICROBES 2021. [DOI: 10.1093/femsmc/xtab013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
ABSTRACT
Blown pack spoilage (BPS) of vacuum packaged primals, caused by Clostridium estertheticum and Clostridium gasigenes, is a serious issue for the beef industry. There are multiple sources of these bacteria on beef farms, including grass and associated feed preparations. The aim of this study was to investigate the survival of C. estertheticum and C. gasigenes spores during the ensiling of grass and the subsequent opening of the silos. Grass, harvested from fields, with and without cattle slurry amendment, was inoculated with approximately 100 spores/g and ensiled using a laboratory (silo) model system at 20°C in the dark. Adding formic acid or sucrose resulted in six treatment combination as follows: no slurry (NS), no slurry plus formic acid (NSFA), no slurry plus sucrose (NSS), slurry (S), slurry plus formic acid (SFA) and slurry plus sucrose (SS). During the silage fermentation, samples were removed periodically and tested for C. estertheticum, C. gasigenes, total viable, Escherichia coli, Enterobacteriaceae and lactic acid bacteria (LAB) counts. The pH, ethanol, volatile fatty acids (VFA), lactic acid and ammonia concentrations were also monitored throughout the experiment. C. estertheticum did not survive the ensiling process, regardless of treatment. In contrast, C. gasigenes grew in the early stages and was detected during the entirety of the fermentation for all treatments. Based on these observations, it was concluded that the silage fermentation process described would not remove C. gasigenes and contaminated grass may result in contaminated feed for animals.
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Affiliation(s)
- Eden Esteves
- Department of Food Safety, Teagasc Food Research Centre, Ashtown, Dublin 15, Ireland
- School of Veterinary Medicine, University College Dublin, Belfield, Dublin 4, Ireland
- Food Assurance Team, AgResearch Ltd, Hopkirk Research Institute, Massey University, Palmerston North 4472, New Zealand
| | - Paul Whyte
- School of Veterinary Medicine, University College Dublin, Belfield, Dublin 4, Ireland
| | - Tanushree B Gupta
- Food Assurance Team, AgResearch Ltd, Hopkirk Research Institute, Massey University, Palmerston North 4472, New Zealand
| | - Declan Bolton
- Department of Food Safety, Teagasc Food Research Centre, Ashtown, Dublin 15, Ireland
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Esteves E, Whyte P, Mills J, Brightwell G, Gupta TB, Bolton D. An investigation into the anaerobic spoilage microbiota of beef carcass and rump steak cuts using high- throughput sequencing. FEMS Microbiol Lett 2021; 368:6362601. [PMID: 34472614 DOI: 10.1093/femsle/fnab109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Accepted: 08/31/2021] [Indexed: 11/14/2022] Open
Abstract
The presence of anaerobic microflora on fresh beef carcass and rump steaks, which may contribute to meat spoilage, was explored in this study. A total of 120 carcass and 120 rump steak swabs were collected immediately after slaughtering and boning, respectively from five meat plants, anaerobically incubated and enriched at 4°C for 3 weeks. This was followed by DNA extraction and 16S rRNA amplicon sequencing using the Illumina MiSeq, with subsequent bioinformatics analysis. The enriched microbiota of the samples was classified and grouped into 149 operational taxonomic units (OTUs). The microbiota recovered from both sample types consisted mainly of Carnobacterium, with an average relative abundance of 28.4% and 32.8% in beef carcasses and beef rump steaks, respectively. This was followed by Streptococcus, Serratia, Lactococcus, Enterococcus, Escherichia-Shigella, Raoultella and Aeromonas ranging from 1.5 to 20% and 0.1 to 29.8% in enriched carcasses and rump steak swabs, respectively. Trichococcus, Bacteroides, Dysgomonas, Providencia, Paraclostridium and Proteus were also present ranging from 0 to 0.8% on carcass and 0 to 1.8% on rump steak swabs, respectively. Alpha and beta diversity measurements showed limited diversity between the two sample types, but some differences between samples from the beef plants investigated were evident. This study highlights the presence of potential spoilage bacteria, mainly anaerobic genera on and between carcass and rump steaks, as an indication of contamination on and between these samples.
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Affiliation(s)
- Eden Esteves
- Department of Food Safety, Teagasc Food Research Centre, Ashtown, Dublin 15, Ireland.,School of Veterinary Medicine, UCD, Belfield, Dublin 4, Ireland.,Food Assurance Team, AgResearch Limited, Hopkirk Research Institute, Massey University, Palmerston North 4472, New Zealand
| | - Paul Whyte
- School of Veterinary Medicine, UCD, Belfield, Dublin 4, Ireland
| | - John Mills
- Food Assurance Team, AgResearch Limited, Hopkirk Research Institute, Massey University, Palmerston North 4472, New Zealand
| | - Gale Brightwell
- Food Assurance Team, AgResearch Limited, Hopkirk Research Institute, Massey University, Palmerston North 4472, New Zealand
| | - Tanushree B Gupta
- Food Assurance Team, AgResearch Limited, Hopkirk Research Institute, Massey University, Palmerston North 4472, New Zealand
| | - Declan Bolton
- Department of Food Safety, Teagasc Food Research Centre, Ashtown, Dublin 15, Ireland
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Xu MM, Kaur M, Pillidge CJ, Torley PJ. Evaluation of the potential of protective cultures to extend the microbial shelf-life of chilled lamb meat. Meat Sci 2021; 181:108613. [PMID: 34218124 DOI: 10.1016/j.meatsci.2021.108613] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 05/13/2021] [Accepted: 06/21/2021] [Indexed: 02/03/2023]
Abstract
The use of protective cultures to inhibit spoilage bacteria is a promising natural preservation technique to extend the shelf-life of fresh meat. This study evaluated the effectiveness of six food-grade protective cultures (containing different combinations of Lactobacillus sakei, Pediococcus pentosaceus, Staphylococcus xylosus, and Staphylococcus carnosus) on naturally contaminated chill-stored (4 °C) lamb meat in different packaging systems. Only slight reductions of common meat spoilage bacteria Brochothrix thermosphacta, Pseudomonas spp., and Enterobacteriaceae were observed in culture-treated samples stored in modified atmosphere packaging (80% O2:20% CO2). Greater inhibitory effects were found in vacuum-packed lamb, with mixed cultures containing either L. sakei, S. carnosus, and S. xylosus or S. carnosus and L. sakei causing the most significant reductions. Protective cultures did not adversely affect meat color or pH. This study demonstrated the potential of protective cultures comprising lactic acid bacteria and coagulase-negative staphylococci in controlling microbial spoilage of lamb and, by inference, other types of meat as a natural solution for shelf-life extension.
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Affiliation(s)
- Michelle M Xu
- Biosciences and Food Technology, School of Science, RMIT University, Melbourne, Australia.
| | - Mandeep Kaur
- Biosciences and Food Technology, School of Science, RMIT University, Melbourne, Australia.
| | - Christopher J Pillidge
- Biosciences and Food Technology, School of Science, RMIT University, Melbourne, Australia.
| | - Peter J Torley
- Biosciences and Food Technology, School of Science, RMIT University, Melbourne, Australia.
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Xu MM, Kaur M, Pillidge CJ, Torley PJ. Microbial biopreservatives for controlling the spoilage of beef and lamb meat: their application and effects on meat quality. Crit Rev Food Sci Nutr 2021; 62:4571-4592. [PMID: 33533634 DOI: 10.1080/10408398.2021.1877108] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Biopreservation is a recognized natural method for controlling the growth of undesirable bacteria on fresh meat. It offers the potential to inhibit spoilage bacteria and extend meat shelf-life, but this aspect has been much less studied compared to using the approach to target pathogenic bacteria. This review provides comprehensive information on the application of biopreservatives of microbial origin, mainly bacteriocins and protective cultures, in relation to bacterial spoilage of beef and lamb meat. The sensory effect of these biopreservatives, an aspect that often receives less attention in microbiological studies, is also reviewed. Microbial biopreservatives were found to be able to retard the growth of the major meat spoilage bacteria, Brochothrix thermosphacta, Pseudomonas spp., and Enterobacteriaceae. Their addition did not have any discernible negative impact on the sensory properties of meat, whether assessed by human sensory panels or instrumental and chemical analyses. Although results are promising, the concept of biopreservation for controlling spoilage bacteria on fresh meat is still in its infancy. Studies in this area are still lacking, especially for lamb. Biopreservatives need more testing under conditions representative of commercial meat production, along with studies of any possible sensory effects, in order to validate their potential for large-scale industrial applications.
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Affiliation(s)
- Michelle M Xu
- Biosciences and Food Technology, School of Science, RMIT University, Melbourne, Australia
| | - Mandeep Kaur
- Biosciences and Food Technology, School of Science, RMIT University, Melbourne, Australia
| | - Christopher J Pillidge
- Biosciences and Food Technology, School of Science, RMIT University, Melbourne, Australia
| | - Peter J Torley
- Biosciences and Food Technology, School of Science, RMIT University, Melbourne, Australia
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9
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Comparative genomics of Clostridium species associated with vacuum-packed meat spoilage. Food Microbiol 2020; 95:103687. [PMID: 33397617 DOI: 10.1016/j.fm.2020.103687] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 11/17/2020] [Accepted: 11/18/2020] [Indexed: 12/23/2022]
Abstract
Bacterial species belonging to the genus Clostridium have been recognized as causative agents of blown pack spoilage (BPS) in vacuum packed meat products. Whole-genome sequencing of six New Zealand psychrotolerant clostridia isolates derived from three meat production animal types and their environments was performed to examine their roles in BPS. Comparative genome analyses have provided insight into the genomic diversity and physiology of these bacteria and divides clostridia into two separate species clusters. BPS-associated clostridia encode a large and diverse spectrum of degradative carbohydrate-active enzymes (CAZymes) that enable them to utilize the intramuscular carbohydrate stores and facilitate sporulation. In total, 516 glycoside hydrolases (GHs), 93 carbohydrate esterases (CEs), 21 polysaccharide lyases (PLs), 434 glycosyl transferases (GTs) and 211 carbohydrate-binding protein modules (CBM) with predicted activities involved in the breakdown and transport of carbohydrates were identified. Clostridia genomes have different patterns of CAZyme families and vary greatly in the number of genes within each CAZy category, suggesting some level of functional redundancy. These results suggest that BPS-associated clostridia occupy similar environmental niches but apply different carbohydrate metabolism strategies to be able to co-exist and cause meat spoilage.
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Ben Said L, Gaudreau H, Dallaire L, Tessier M, Fliss I. Bioprotective Culture: A New Generation of Food Additives for the Preservation of Food Quality and Safety. Ind Biotechnol (New Rochelle N Y) 2019. [DOI: 10.1089/ind.2019.29175.lbs] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Affiliation(s)
- Laila Ben Said
- Nutrition and Functional Foods Institute, Department of Food Science, Université Laval, Québec, Canada
| | - Hélène Gaudreau
- Nutrition and Functional Foods Institute, Department of Food Science, Université Laval, Québec, Canada
| | | | | | - Ismail Fliss
- Nutrition and Functional Foods Institute, Department of Food Science, Université Laval, Québec, Canada
- Ismail Fliss, PhD, is Full Professor, Nutrition and Functional Foods Institute, Department of Food science, Université Laval, G1V 0A6, Québec, Canada. Phone: (418) 656–2131.
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11
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Wambui J, Stephan R. Relevant Aspects of Clostridium estertheticum as a Specific Spoilage Organism of Vacuum-Packed Meat. Microorganisms 2019; 7:microorganisms7050142. [PMID: 31137543 PMCID: PMC6560419 DOI: 10.3390/microorganisms7050142] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Revised: 05/12/2019] [Accepted: 05/16/2019] [Indexed: 12/11/2022] Open
Abstract
Clostridium estertheticum is a psychrotolerant, gram-positive, motile, anaerobic, spore-forming, rod-shaped bacteria that causes blown pack spoilage (BPS). Spoilage occurs in vacuum-packed meat without temperature abuse. Having been reported in the last 30 years in several countries, BPS by Cl. estertheticum is a major issue around the world and presents a huge economic impact on the meat industry. Despite being an important spoilage microorganism, studies on Cl. estertheticum are challenged by numerous aspects. These include, lack or poor growth in laboratory media, long culturing periods, and unpredictable isolation on the media. These factors hamper the detection of Cl. estertheticum before occurrence of BPS, which further undermines efforts to prevent the occurrence of BPS. Nevertheless, considerable developments have taken place with regard to culture-independent methods. Although information on Cl. estertheticum is available, it is limited and remains highly fragmented. Therefore, this review collates the available information and discusses relevant aspects of Cl. estertheticum as a specific spoilage organism of BPS in vacuum-packed meat.
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Affiliation(s)
- Joseph Wambui
- Institute for Food Safety and Hygiene, Vetsuisse Faculty, University of Zurich, Winterthurerstrasse 272, 8057 Zurich, Switzerland.
| | - Roger Stephan
- Institute for Food Safety and Hygiene, Vetsuisse Faculty, University of Zurich, Winterthurerstrasse 272, 8057 Zurich, Switzerland.
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12
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Zhang Y, Zhu L, Dong P, Liang R, Mao Y, Qiu S, Luo X. Bio-protective potential of lactic acid bacteria: Effect of Lactobacillus sakei and Lactobacillus curvatus on changes of the microbial community in vacuum-packaged chilled beef. ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES 2017; 31:585-594. [PMID: 29059725 PMCID: PMC5838332 DOI: 10.5713/ajas.17.0540] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Revised: 09/04/2017] [Accepted: 09/26/2017] [Indexed: 11/27/2022]
Abstract
OBJECTIVE This study was to determine the bacterial diversity and monitor the community dynamic changes during storage of vacuum-packaged sliced raw beef as affected by Lactobacillus sakei and Lactobacillus curvatus. METHODS L. sakei and L. curvatus were separately incubated in vacuumed-packaged raw beef as bio-protective cultures to inhibit the naturally contaminating microbial load. Dynamic changes of the microbial diversity of inoculated or non-inoculated (control) samples were monitored at 4°C for 0 to 38 days, using polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE). RESULTS The DGGE profiles of DNA directly extracted from non-inoculated control samples highlighted the order of appearance of spoilage bacteria during storage, showing that Enterbacteriaceae and Pseudomonas fragi emerged early, then Brochothrix thermosphacta shared the dominant position, and finally, Pseudomonas putida showed up became predominant. Compared with control, the inoculation of either L. sakei or L. curvatus significantly lowered the complexity of microbial diversity and inhibited the growth of spoilage bacteria (p<0.05). Interestingly, we also found that the dominant position of L. curvatus was replaced by indigenous L. sakei after 13 d for L. curvatus-inoculated samples. Plate counts on selective agars further showed that inoculation with L. sakei or L. curvatus obviously reduced the viable counts of Enterbacteraceae, Pseudomonas spp. and B. thermosphacta during later storage (p< 0.05), with L. sakei exerting greater inhibitory effect. Inoculation with both bio-protective cultures also significantly decreased the total volatile basic nitrogen values of stored samples (p<0.05). CONCLUSION Taken together, the results proved the benefits of inoculation with lactic acid bacteria especially L. sakei as a potential way to inhibit growth of spoilage-related bacteria and improve the shelf life of vacuum-packaged raw beef.
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Affiliation(s)
- Yimin Zhang
- Lab of Beef Processing and Quality Control, College of Food Science and Engineering, Shandong Agricultural University, Taian, Shandong 271018, China
| | - Lixian Zhu
- Lab of Beef Processing and Quality Control, College of Food Science and Engineering, Shandong Agricultural University, Taian, Shandong 271018, China
| | - Pengcheng Dong
- Lab of Beef Processing and Quality Control, College of Food Science and Engineering, Shandong Agricultural University, Taian, Shandong 271018, China
| | - Rongrong Liang
- Lab of Beef Processing and Quality Control, College of Food Science and Engineering, Shandong Agricultural University, Taian, Shandong 271018, China
| | - Yanwei Mao
- Lab of Beef Processing and Quality Control, College of Food Science and Engineering, Shandong Agricultural University, Taian, Shandong 271018, China
| | - Shubing Qiu
- The municipal authority affairs administration, Dezhou, Shandong 253076, China
| | - Xin Luo
- Lab of Beef Processing and Quality Control, College of Food Science and Engineering, Shandong Agricultural University, Taian, Shandong 271018, China.,Jiangsu Synergetic Innovation Center of Meat Production and Processing Quality and Safety Control, Nanjing Jiangsu 210000, China
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Zagorec M, Champomier-Vergès MC. Lactobacillus sakei: A Starter for Sausage Fermentation, a Protective Culture for Meat Products. Microorganisms 2017; 5:microorganisms5030056. [PMID: 28878171 PMCID: PMC5620647 DOI: 10.3390/microorganisms5030056] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Revised: 08/29/2017] [Accepted: 09/05/2017] [Indexed: 12/28/2022] Open
Abstract
Among lactic acid bacteria of meat products, Lactobacillus sakei is certainly the most studied species due to its role in the fermentation of sausage and its prevalence during cold storage of raw meat products. Consequently, the physiology of this bacterium regarding functions involved in growth, survival, and metabolism during meat storage and processing are well known. This species exhibits a wide genomic diversity that can be observed when studying different strains and on which probably rely its multiple facets in meat products: starter, spoiler, or protective culture. The emerging exploration of the microbial ecology of meat products also revealed the multiplicity of bacterial interactions L. sakei has to face and their various consequences on microbial quality and safety at the end of storage.
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14
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Beristain-Bauza SDC, Mani-López E, Palou E, López-Malo A. Antimicrobial activity of whey protein films supplemented with Lactobacillus sakei cell-free supernatant on fresh beef. Food Microbiol 2017; 62:207-211. [DOI: 10.1016/j.fm.2016.10.024] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2015] [Revised: 10/11/2016] [Accepted: 10/12/2016] [Indexed: 01/12/2023]
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15
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Fougy L, Desmonts MH, Coeuret G, Fassel C, Hamon E, Hézard B, Champomier-Vergès MC, Chaillou S. Reducing Salt in Raw Pork Sausages Increases Spoilage and Correlates with Reduced Bacterial Diversity. Appl Environ Microbiol 2016; 82:3928-3939. [PMID: 27107120 PMCID: PMC4907177 DOI: 10.1128/aem.00323-16] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Accepted: 04/17/2016] [Indexed: 01/22/2023] Open
Abstract
UNLABELLED Raw sausages are perishable foodstuffs; reducing their salt content raises questions about a possible increased spoilage of these products. In this study, we evaluated the influence of salt reduction (from 2.0% to 1.5% [wt/wt]), in combination with two types of packaging (modified atmosphere [50% mix of CO2-N2] and vacuum packaging), on the onset of spoilage and on the diversity of spoilage-associated bacteria. After 21 days of storage at 8°C, spoilage was easily observed, characterized by noticeable graying of the products and the production of gas and off-odors defined as rancid, sulfurous, or sour. At least one of these types of spoilage occurred in each sample, and the global spoilage intensity was more pronounced in samples stored under modified atmosphere than under vacuum packaging and in samples with the lower salt content. Metagenetic 16S rRNA pyrosequencing revealed that vacuum-packaged samples contained a higher total bacterial richness (n = 69 operational taxonomic units [OTUs]) than samples under the other packaging condition (n = 46 OTUs). The core community was composed of 6 OTUs (Lactobacillus sakei, Lactococcus piscium, Carnobacterium divergens, Carnobacterium maltaromaticum, Serratia proteamaculans, and Brochothrix thermosphacta), whereas 13 OTUs taxonomically assigned to the Enterobacteriaceae, Enterococcaceae, and Leuconostocaceae families comprised a less-abundant subpopulation. This subdominant community was significantly more abundant when 2.0% salt and vacuum packaging were used, and this correlated with a lower degree of spoilage. Our results demonstrate that salt reduction, particularly when it is combined with CO2-enriched packaging, promotes faster spoilage of raw sausages by lowering the overall bacterial diversity (both richness and evenness). IMPORTANCE Our study takes place in the context of raw meat product manufacturing and is linked to a requirement for salt reduction. Health guidelines are calling for a reduction in dietary salt intake. However, salt has been used for a very long time as a hurdle technology, and salt reduction in meat products raises the question of spoilage and waste of food. The study was conceived to assess the role of sodium chloride reduction in meat products, both at the level of spoilage development and at the level of bacterial diversity, using 16S rRNA amplicon sequencing and raw pork sausage as a meat model.
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Affiliation(s)
- Lysiane Fougy
- Micalis Institute, INRA, AgroParisTech, Université Paris-Saclay, Jouy-en-Josas, France
- Aérial, Parc d'Innovation, Illkirch, France
| | | | - Gwendoline Coeuret
- Micalis Institute, INRA, AgroParisTech, Université Paris-Saclay, Jouy-en-Josas, France
| | | | | | | | | | - Stéphane Chaillou
- Micalis Institute, INRA, AgroParisTech, Université Paris-Saclay, Jouy-en-Josas, France
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Ferrari IDS, de Souza JV, Ramos CL, da Costa MM, Schwan RF, Dias FS. Selection of autochthonous lactic acid bacteria from goat dairies and their addition to evaluate the inhibition of Salmonella typhi in artisanal cheese. Food Microbiol 2016; 60:29-38. [PMID: 27554143 DOI: 10.1016/j.fm.2016.06.014] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Revised: 06/03/2016] [Accepted: 06/24/2016] [Indexed: 10/21/2022]
Abstract
This study aimed to select autochthonous lactic acid bacteria (LAB) with probiotic and functional properties from goat dairies and test their addition to artisanal cheese for the inhibition of Salmonella typhi. In vitro tests, including survival in the gastrointestinal tract (GIT), auto- and co-aggregation, the hemolytic test, DNase activity, antimicrobial susceptibility, antibacterial activity, tolerance to NaCl and exopolysaccharide (EPS), gas and diacetyl production were conducted for sixty isolates. Based on these tests, four LAB isolates (UNIVASF CAP 16, 45, 84 and 279) were selected and identified. Additional tests, such as production of lactic and citric acids by UNIVASF CAP isolates were performed in addition to assays of bile salt hydrolase (BSH), β-galactosidase and decarboxylase activity. The four selected LAB produced high lactic acid (>17 g/L) and low citric acid (0.2 g/L) concentrations. All selected strains showed BSH and β-galactosidase activity and none showed decarboxylase activity. Three goat cheeses (1, 2 and control) were produced and evaluated for the inhibitory action of selected LAB against Salmonella typhi. The cheese inoculated with LAB (cheese 2) decreased 0.38 log10 CFU/g of S. Typhy population while in the cheese without LAB inoculation (cheese 1) the pathogen population increased by 0.29 log units. Further, the pH value increased linearly over time, by 0.004 units per day in cheese 1. In the cheese 2, the pH value decreased linearly over time, by 0.066 units per day. The cocktail containing selected Lactobacillus strains with potential probiotic and technological properties showed antibacterial activity against S. typhi in vitro and in artisanal goat cheese. Thus, goat milk is important source of potential probiotic LAB which may be used to inhibit the growth of Salmonella population in cheese goat, contributing to safety and functional value of the product.
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Affiliation(s)
- Iris da Silva Ferrari
- Federal University of San Francisco Valley, Rod. BR 407, Km 12 - Lote 543 - Projeto de Irrigação Senador Nilo Coelho, s/nº - C1, 56.300-990, Petrolina, Pernambuco, Brazil
| | - Jane Viana de Souza
- Federal University of San Francisco Valley, Rod. BR 407, Km 12 - Lote 543 - Projeto de Irrigação Senador Nilo Coelho, s/nº - C1, 56.300-990, Petrolina, Pernambuco, Brazil
| | - Cintia Lacerda Ramos
- Federal University of Lavras, Biology Department, 37.200-000, Lavras, Minas Gerais, Brazil
| | - Mateus Matiuzzi da Costa
- Federal University of San Francisco Valley, Rod. BR 407, Km 12 - Lote 543 - Projeto de Irrigação Senador Nilo Coelho, s/nº - C1, 56.300-990, Petrolina, Pernambuco, Brazil
| | - Rosane Freitas Schwan
- Federal University of Lavras, Biology Department, 37.200-000, Lavras, Minas Gerais, Brazil
| | - Francesca Silva Dias
- Federal University of San Francisco Valley, Rod. BR 407, Km 12 - Lote 543 - Projeto de Irrigação Senador Nilo Coelho, s/nº - C1, 56.300-990, Petrolina, Pernambuco, Brazil.
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Di Gioia D, Mazzola G, Nikodinoska I, Aloisio I, Langerholc T, Rossi M, Raimondi S, Melero B, Rovira J. Lactic acid bacteria as protective cultures in fermented pork meat to prevent Clostridium spp. growth. Int J Food Microbiol 2016; 235:53-9. [PMID: 27400453 DOI: 10.1016/j.ijfoodmicro.2016.06.019] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Revised: 05/13/2016] [Accepted: 06/18/2016] [Indexed: 12/28/2022]
Abstract
In meat fermented foods, Clostridium spp. growth is kept under control by the addition of nitrite. The growing request of consumers for safer products has led to consider alternative bio-based approaches, the use of protective cultures being one of them. This work is aimed at checking the possibility of using two Lactobacillus spp. strains as protective cultures against Clostridium spp. in pork ground meat for fermented salami preparation. Both Lactobacillus strains displayed anti-clostridia activity in vitro using the spot agar test and after co-culturing them in liquid medium with each Clostridium strain. Only one of them, however, namely L. plantarum PCS20, was capable of effectively surviving in ground meat and of performing anti-microbial activity in carnis in a challenge test where meat was inoculated with the Clostridium strain. Therefore, this work pointed out that protective cultures can be a feasible approach for nitrite reduction in fermented meat products.
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Affiliation(s)
- Diana Di Gioia
- Department of Agricultural Science, University of Bologna, viale Fanin 42, 40136 Bologna, Italy.
| | - Giuseppe Mazzola
- Department of Agricultural Science, University of Bologna, viale Fanin 42, 40136 Bologna, Italy
| | - Ivana Nikodinoska
- Department of Agricultural Science, University of Bologna, viale Fanin 42, 40136 Bologna, Italy; Department of Biotechnology and Food Science, University of Burgos, Plaza Misael Bañuelos s/n, 09001 Burgos, Spain
| | - Irene Aloisio
- Department of Agricultural Science, University of Bologna, viale Fanin 42, 40136 Bologna, Italy
| | - Tomaz Langerholc
- Department of Microbiology, Biochemistry, Molecular Biology and Biotechnology, University of Maribor, Pivola 10, 2311 Hoce, Slovenia
| | - Maddalena Rossi
- Department of Life Science, University of Modena and Reggio Emilia, Via Campi 183, 41125 Modena, Italy
| | - Stefano Raimondi
- Department of Life Science, University of Modena and Reggio Emilia, Via Campi 183, 41125 Modena, Italy
| | - Beatriz Melero
- Department of Biotechnology and Food Science, University of Burgos, Plaza Misael Bañuelos s/n, 09001 Burgos, Spain
| | - Jordi Rovira
- Department of Biotechnology and Food Science, University of Burgos, Plaza Misael Bañuelos s/n, 09001 Burgos, Spain
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Húngaro HM, Caturla MY, Horita CN, Furtado MM, Sant'Ana AS. Blown pack spoilage in vacuum-packaged meat: A review on clostridia as causative agents, sources, detection methods, contributing factors and mitigation strategies. Trends Food Sci Technol 2016. [DOI: 10.1016/j.tifs.2016.04.010] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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19
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Control of Escherichia coli and Listeria monocytogenes in suckling-lamb meat evaluated using microbial challenge tests. Meat Sci 2015; 110:262-9. [PMID: 26298670 DOI: 10.1016/j.meatsci.2015.08.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2014] [Revised: 06/05/2015] [Accepted: 08/09/2015] [Indexed: 11/22/2022]
Abstract
Escherichia coli and Listeria monocytogenes microbial challenge tests were performed on fresh suckling-lamb meat. Hind leg slices were chilly stored under two modified atmosphere packaging (MAP) environments (A: 15%O2/60%CO2/25%N2, B: 15%O2/30%CO2/55%N2) and vacuum packaging (V). Only E. coli was reduced between 0.72-1.25 log cfu/g from day 1 to day 4 by the combined use of MAP/V, chilling storage and the growth of native lactic acid bacteria. However, L. monocytogenes was not inhibited by the application of V or MAP. Even do, in inoculated samples, this pathogen increased between 1.2-2.7 log cfu/g throughout the study. Consequently, a second experiment that combined the effects of MAP/V and a protective culture (Leuconostoc pseudomesenteroides PCK 18) against L. monocytogenes was designed. Two different levels of protective cultures were assayed (4 and 6 log cfu/g). Lc. pseudomesenteroides PCK 18 was able to control the growth of L. monocytogenes when the differences between them are higher than 2 log cfu/g. Moreover, when high level of protective culture was used a significant reduction of L. monocytogenes counts were noticed in samples packaged in 60% of CO2 along the storage period, although sensory properties were also affected.
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20
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Amadoro C, Rossi F, Piccirilli M, Colavita G. Features of Lactobacillus Sakei Isolated from Italian Sausages: Focus on Strains from Ventricina del Vastese. Ital J Food Saf 2015; 4:5449. [PMID: 27802352 PMCID: PMC5076685 DOI: 10.4081/ijfs.2015.5449] [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: 07/18/2015] [Revised: 09/23/2015] [Accepted: 10/09/2015] [Indexed: 01/24/2023] Open
Abstract
In this study bacterial isolates from Ventricina del Vastese sausage, previously identified as Lactobacillus (L.) sakei, were characterised genotypically, physiologically and on the basis of some technologically relevant traits. A total of 70 L. sakei isolates from sausages manufactured with spontaneous fermentation in the same producing plant were taken into account. Six genotypic groups were distinguished on the basis of Rep-polymerase chain reaction with the GTG5 primer, some of which were found only in the sausages ripened at temperatures lower than 10°C for the first two months and lower than 16°C for the remaining three months, according to the traditional ripening process. Six strains were selected as representative of the genotypic profiles and further characterised. A high diversity in their fermentation profiles was observed, and different groups were separated on the basis of growth and acidifying capacity in meat extract. None of the strains produced histamine or tyramine in vitro. One strain was able to slightly inhibit Listeria (L.) monocytogenes and L. innocua and all six strains were able to slightly inhibit Enterobacteriaceae isolated from Ventricina del Vastese sausages in vitro. Results showed that most L. sakei strains can have a role in improving the safety of low acidity fermented sausages, even though a limited acidifying capacity was observed in a meat-like substrate, and that L. sakei strains able to produce biogenic amines are unlikely to occur in spontaneously fermented meat products.
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Affiliation(s)
- Carmela Amadoro
- Department of Medicine and Health Sciences, University of Molise , Campobasso, Italy
| | - Franca Rossi
- Department of Medicine and Health Sciences, University of Molise , Campobasso, Italy
| | - Michele Piccirilli
- Department of Medicine and Health Sciences, University of Molise , Campobasso, Italy
| | - Giampaolo Colavita
- Department of Medicine and Health Sciences, University of Molise , Campobasso, Italy
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21
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Wang G, Zhao Y, Tian F, Jin X, Chen H, Liu X, Zhang Q, Zhao J, Chen Y, Zhang H, Chen W. Screening of adhesive lactobacilli with antagonistic activity against Campylobacter jejuni. Food Control 2014. [DOI: 10.1016/j.foodcont.2014.03.042] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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22
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Chaillou S, Christieans S, Rivollier M, Lucquin I, Champomier-Vergès M, Zagorec M. Quantification and efficiency of Lactobacillus sakei strain mixtures used as protective cultures in ground beef. Meat Sci 2014; 97:332-8. [DOI: 10.1016/j.meatsci.2013.08.009] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2013] [Revised: 08/06/2013] [Accepted: 08/09/2013] [Indexed: 10/26/2022]
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23
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Cálix-Lara TF, Rajendran M, Talcott ST, Smith SB, Miller RK, Castillo A, Sturino JM, Taylor TM. Inhibition of Escherichia coli O157:H7 and Salmonella enterica on spinach and identification of antimicrobial substances produced by a commercial Lactic Acid Bacteria food safety intervention. Food Microbiol 2014; 38:192-200. [DOI: 10.1016/j.fm.2013.09.006] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2013] [Revised: 09/04/2013] [Accepted: 09/29/2013] [Indexed: 11/28/2022]
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24
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Population genetics of Lactobacillus sakei reveals three lineages with distinct evolutionary histories. PLoS One 2013; 8:e73253. [PMID: 24069179 PMCID: PMC3777942 DOI: 10.1371/journal.pone.0073253] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2013] [Accepted: 07/19/2013] [Indexed: 11/20/2022] Open
Abstract
Lactobacillus sakei plays a major role in meat fermentation and in the preservation of fresh meat. The large diversity of L. sakei strains represents a valuable and exploitable asset in the development of a variety of industrial applications; however, an efficient method to identify and classify these strains has yet to be developed. In this study, we used multilocus sequence typing (MLST) to analyze the polymorphism and allelic distribution of eight loci within an L. sakei population of 232 strains collected worldwide. Within this population, we identified 116 unique sequence types with an average pairwise nucleotide diversity per site (π) of 0.13%. Results from Structure, goeBurst, and ClonalFrame software analyses demonstrated that the L. sakei population analyzed here is derived from three ancestral lineages, each of which shows evidence of a unique evolutionary history influenced by independent selection scenarios. However, the signature of selective events in the contemporary population of isolates was somewhat masked by the pervasive phenomenon of homologous recombination. Our results demonstrate that lineage 1 is a completely panmictic subpopulation in which alleles have been continually redistributed through the process of intra-lineage recombination. In contrast, lineage 2 was characterized by a high degree of clonality. Lineage 3, the earliest-diverging branch in the genealogy, showed evidence of both clonality and recombination. These evolutionary histories strongly indicate that the three lineages may correspond to distinct ecotypes, likely linked or specialized to different environmental reservoirs. The MLST scheme developed in this study represents an easy and straightforward tool that can be used to further analyze the population dynamics of L. sakei strains in food products.
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25
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Hernández-Macedo M, Contreras-Castillo C, Tsai S, Da Cruz S, Sarantopoulos C, Padula M, Dias C. Gases and volatile compounds associated with micro-organisms in blown pack spoilage of Brazilian vacuum-packed beef. Lett Appl Microbiol 2012; 55:467-75. [DOI: 10.1111/lam.12004] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2012] [Revised: 09/18/2012] [Accepted: 09/19/2012] [Indexed: 11/26/2022]
Affiliation(s)
- M.L. Hernández-Macedo
- Departamento de Agroindústria, Alimentos e Nutrição, ESALQ; Universidade de São Paulo; São Paulo Brazil
| | - C.J. Contreras-Castillo
- Departamento de Agroindústria, Alimentos e Nutrição, ESALQ; Universidade de São Paulo; São Paulo Brazil
| | - S.M. Tsai
- Centro de Energia Nuclear na Agricultura, CENA; Universidade de São Paulo; São Paulo Brazil
| | - S.H. Da Cruz
- Departamento de Agroindústria, Alimentos e Nutrição, ESALQ; Universidade de São Paulo; São Paulo Brazil
| | - C.I.G.L. Sarantopoulos
- Centro de Tecnologia de Embalagem; Instituto de Tecnologia de Alimentos; São Paulo Brazil
| | - M. Padula
- Centro de Tecnologia de Embalagem; Instituto de Tecnologia de Alimentos; São Paulo Brazil
| | - C.T.S. Dias
- Departamento de Ciências Exatas, ESALQ; Universidade de São Paulo; São Paulo Brazil
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26
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Bigwood T, Hudson JA, Cooney J, McIntyre L, Billington C, Heinemann JA, Wall F. Inhibition of Listeria monocytogenes by Enterococcus mundtii isolated from soil. Food Microbiol 2012; 32:354-60. [PMID: 22986201 DOI: 10.1016/j.fm.2012.07.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2012] [Revised: 07/23/2012] [Accepted: 07/30/2012] [Indexed: 11/15/2022]
Abstract
Two bacterial isolates with inhibitory activity against Listeria monocytogenes and Enterococcus faecalis were obtained from soil. Genotypic and phenotypic characterization identified them as Enterococcus mundtii, a species whose ability to compete with L. monocytogenes is relatively unexplored compared to other members of the genus. The thermal stability of the inhibitory factor and its sensitivity to proteolytic enzymes indicate that it is most likely a bacteriocin. Both isolates grew at comparable rates to L. monocytogenes at 5 °C and 10 °C in vitro. One isolate killed L. monocytogenes when it reached concentrations of 10(6)-10(8) CFU ml(-1). Minimum inocula of 10(6) and 10(5) CFU ml(-1) of E. mundtii were required to reduce and maintain L. monocytogenes concentrations beneath the level of detection at 5 °C and 10 °C, respectively. In situ experiments at 5 °C showed that E. mundtii inhibited the growth of L. monocytogenes on vacuum-packed cold smoked salmon during its four week shelf life. E. mundtii could, therefore, control the growth of L. monocytogenes at low temperatures, indicating a potential application in controlling this pathogen in chilled foods. To control growth of Listeria, the concentration of E. mundtii needs to be high, but it is possible that a purified bacteriocin could be used to achieve the same effect.
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Affiliation(s)
- T Bigwood
- Food Safety Programme, Institute of Environmental Science and Research Ltd (ESR), Christchurch Science Centre, PO Box 29-181, Ilam, Christchurch, New Zealand.
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27
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Chaves RD, Silva AR, Sant’Ana AS, Campana FB, Massaguer PR. Gas-producing and spoilage potential of Enterobacteriaceae and lactic acid bacteria isolated from chilled vacuum-packaged beef. Int J Food Sci Technol 2012. [DOI: 10.1111/j.1365-2621.2012.03030.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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28
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Cálix-Lara TF, Duong T, Taylor TM. Addition of a surfactant to tryptic soy broth allows growth of a lactic acid bacteria food antimicrobial, Escherichia coli O157:H7, and Salmonella enterica. Lett Appl Microbiol 2012; 54:392-7. [PMID: 22313253 DOI: 10.1111/j.1472-765x.2012.03218.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
AIMS This study aimed to determine the survival and growth of Escherichia coli O157:H7 and Salmonella enterica subsp. enterica in a medium supporting the growth of a Lactic Acid Bacteria (LAB) food antimicrobial culture. METHODS AND RESULTS Foodborne pathogens and LAB were cultured individually in tryptic soy broth (TSB), tryptic soy broth supplemented with one g l(-1) Tween 80(®) (TSB-T80), and de Man, Rogosa and Sharpe (MRS) broth. Growth of E. coli O157:H7 and Salmonella was similar in TSB and TSB-T80 but was significantly less in MRS. Conversely, LAB growth was similar in MRS and TSB-T80 but was significantly less in TSB. CONCLUSIONS Supplementation of TSB with Tween 80(®) allows growth of LAB to levels similar to that observed with MRS but does not inhibit the growth of E. coli O157:H7 and Salmonella. We present the formulation of a medium useful in studies useful for evaluating competitive inhibition of foodborne pathogens by LAB in vitro. SIGNIFICANCE AND IMPACT OF THE STUDY This study reports the utility of TSB-T80 for the completion of in vitro competitive inhibition assays incorporating a Lactic Acid Bacteria food safety culture.
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Affiliation(s)
- T F Cálix-Lara
- Texas AgriLife Research, Department of Animal Science, College Station, TX 77843, USA
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29
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Liu Y, Betti M, Gänzle MG. High pressure inactivation of Escherichia coli, Campylobacter jejuni, and spoilage microbiota on poultry meat. J Food Prot 2012; 75:497-503. [PMID: 22410223 DOI: 10.4315/0362-028x.jfp-11-316] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
This study evaluated the high pressure inactivation of Campylobacter jejuni, Escherichia coli, and poultry meat spoilage organisms. All treatments were performed in aseptically prepared minced poultry meat. Treatment of 19 strains of C. jejuni at 300 MPa and 30°C revealed a large variation of pressure resistance. The recovery of pressure-induced sublethally injured C. jejuni depended on the availability of iron. The addition of iron content to enumeration media was required for resuscitation of sublethally injured cells. Survival of C. jejuni during storage of refrigerated poultry meat was analyzed in fresh and pressuretreated poultry meat, and in the presence or absence of spoilage microbiota. The presence of spoilage microbiota did not significantly influence the survival of C. jejuni. Pressure treatment at 400 MPa and 40°C reduced cell counts of Brochothrix thermosphacta, Carnobacterium divergens, C. jejuni, and Pseudomonas fluorescens to levels below the detection limit. Cell counts of E. coli AW1.7, however, were reduced by only 3.5 log (CFU/g) and remained stable during subsequent refrigerated storage. The resistance to treatment at 600 MPa and 40°C of E. coli AW1.7 was compared with Salmonella enterica, Shiga toxin-producing E. coli and nonpathogenic E. coli strains, and Staphylococcus spp. Cell counts of all organisms except E. coli AW 1.7 were reduced by more than 6 log CFU/g. Cell counts of E. coli AW1.7 were reduced by 4.5 log CFU/g only. Moreover, the ability of E. coli AW1.7 to resist pressure was comparable to the pressure-resistant mutant E. coli LMM1030. Our results indicate that preservation of fresh meat requires a combination of high pressure with high temperature (40 to 60°C) or other antimicrobial hurdles.
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Affiliation(s)
- Yang Liu
- Department of Agricultural, Food and Nutritional Sciences, University of Alberta, Edmonton, Alberta T6G 2P5, Canada
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30
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Jiang J, Shi B, Zhu D, Cai Q, Chen Y, Li J, Qi K, Zhang M. Characterization of a novel bacteriocin produced by Lactobacillus sakei LSJ618 isolated from traditional Chinese fermented radish. Food Control 2012. [DOI: 10.1016/j.foodcont.2011.07.027] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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31
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Lucquin I, Zagorec M, Champomier-Vergès M, Chaillou S. Fingerprint of lactic acid bacteria population in beef carpaccio is influenced by storage process and seasonal changes. Food Microbiol 2011; 29:187-96. [PMID: 22202872 DOI: 10.1016/j.fm.2011.08.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2011] [Revised: 08/01/2011] [Accepted: 08/03/2011] [Indexed: 10/17/2022]
Abstract
We have investigated the population structure of lactic acid bacteria (LAB) for several beef carpaccio available on the market with the purpose of comparing the effect of storage process (modified-atmosphere packaging and vacuum-packaging) and of seasonal changes on this microbial population. Out of 60 samples we have characterised 214 isolates accounting for 10 LAB species and 35 isolates accounting for 11 non-LAB species. Lactobacillus sakei, Leuconostoc carnosum and Leuconostoc mesenteroides were the most prevailing LAB species with a frequency of identification within 66%, 62% and 52% of the samples respectively. These 3 species were also characterised by a phenotypic intra-species diversity of isolates based on colony morphology. We showed that the prevalence was increased 1.5 fold for L. sakei and L. mesenteroides during the summer sampling in comparison to the spring or the fall sampling suggesting an environmental origin of these two species. Seasonal variations were also observed for the prevalence of Lactobacillus fuchuensis and L. carnosum in spring (2- and 1.5-fold increase, respectively) and of Brochothrix thermosphacta in fall (6-fold increase). Finally, we demonstrated that the growth potential after the sell-by-date was favourable of 1.25 log(10) cfu g(-1) to Leuconostoc spp. in modified-atmosphere packaging and of 1.38 log(10) cfu g(-1) to Lactobacillus spp. in vacuum-packaging. In conclusion, we show that important and unsuspected traits in bacterial population dynamics can be unravelled by large sampling strategies. We discuss about the need to take this assessment into account for further studies on bacterial ecosystems of meat.
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Affiliation(s)
- Isabelle Lucquin
- INRA, UMR1319 Micalis, F-78350 Jouy-en-Josas, France; AgroParisTech, UMR Micalis, F-78350 Jouy-en-Josas, France
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32
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Winkelströter LK, Gomes BC, Thomaz MR, Souza VM, De Martinis EC. Lactobacillus sakei 1 and its bacteriocin influence adhesion of Listeria monocytogenes on stainless steel surface. Food Control 2011. [DOI: 10.1016/j.foodcont.2011.02.021] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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33
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Silva AR, Paulo EN, Sant'Ana AS, Chaves RD, Massaguer PR. Involvement of Clostridium gasigenes and C. algidicarnis in 'blown pack' spoilage of Brazilian vacuum-packed beef. Int J Food Microbiol 2011; 148:156-63. [PMID: 21669470 DOI: 10.1016/j.ijfoodmicro.2011.05.016] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2011] [Revised: 05/12/2011] [Accepted: 05/19/2011] [Indexed: 11/26/2022]
Abstract
The objectives of this study were to isolate psychrotrophic clostridia from Brazilian vacuum-packed beef cuts (spoiled or not) and to identify the isolates by using 16S rRNA gene sequencing. Anaerobic psychrotrophic microorganisms were also enumerated and samples were collected to verify the incidence of psychrotrophic clostridia in the abattoir environment. Vacuum-packed beef cuts (n=8 grossly distended and n=5 non-spoiled) and environmental samples were obtained from a beef packing plant located in the state of São Paulo, Brazil. Each sample was divided in three subsamples (exudate, beef surface and beef core) that were analyzed for vegetative forms, total spore-forming, and sulfide reducing spore-forming, both activated by alcohol and heat. Biochemical profiles of the isolates were obtained using API20A, with further identification using 16S rRNA gene sequencing. The growth temperature and the pH range were also assessed. Populations of psychrotrophic anaerobic vegetative microorganisms of up to 10(10)CFU/(g, mL or 100 cm(2)) were found in 'blown pack' samples, while in non-spoiled samples populations of 10(5)CFU/(g, CFU/mL or CFU/100 cm(2)) was found. Overall, a higher population of total spores and sulfide reducing spores activated by heat in spoiled samples was found. Clostridium gasigenes (n=10) and C. algidicarnis (n=2) were identified using 16S rRNA gene sequencing. Among the ten C. gasigenes isolates, six were from spoiled samples (C1, C2 and C9), two were isolated from non-spoiled samples (C4 and C5) and two were isolated from the hide and the abattoir corridor/beef cut conveyor belt. C. algidicarnis was recovered from spoiled beef packs (C2). Although some samples (C3, C7, C10 and C14) presented signs of 'blown pack' spoilage, Clostridium was not recovered. C. algidicarnis (n=1) and C. gasigenes (n=9) isolates have shown a psychrotrophic behavior, grew in the range 6.2-8.2. This is the first report on the isolation of psychrotrophic Clostridium (C. gasigenes and C. algidicarnis) in Brazil. This study shows that psychrotrophic Clostridium may pose a risk for the stability of vacuum-packed beef produced in tropical countries during shelf-life and highlights the need of adopting control measures to reduce their incidence in abattoir and the occurrence of 'blown pack' spoilage.
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Affiliation(s)
- Alessandra R Silva
- Department of Food Science, Faculty of Food Engineering (FEA), University of Campinas (UNICAMP), Campinas, SP, Brazil.
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Yang X, Balamurugan S, Gill CO. Effects on the development of blown pack spoilage of the initial numbers of Clostridium estertheticum spores and Leuconostoc mesenteroides on vacuum packed beef. Meat Sci 2011; 88:361-7. [PMID: 21316870 DOI: 10.1016/j.meatsci.2011.01.010] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2010] [Revised: 01/13/2011] [Accepted: 01/17/2011] [Indexed: 10/18/2022]
Abstract
Beef steaks were inoculated with Clostridium estertheticum spores and Leuconostoc mesenteroides cells at all combinations of numbers of 0, 10, 100 or 1000/cm(2) for each organism. After vacuum packaging the steaks were stored at 4, 1, or -1.5°C. Pack volumes were determined by water displacement at suitable intervals. Irrespective of L. mesenteroides numbers, for packs containing meat inoculated with 0, 10, 100 or 1000 spores/cm(2), 60, 16, 3 and 1 of 60 packs did not swell. The times of onset of swelling were twice as long at -1.5 as at 4°C, but they were not affected by the inoculated numbers of L. mesenteroides. Rates of pack swelling increased with increasing storage temperature and number of spores, but decreased with increasing numbers of inoculated L. mesenteroides. Lactic acid bacteria can apparently prevent development of blown pack spoilage of vacuum packs containing meat contaminated with low numbers of C. estertheticum.
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Affiliation(s)
- X Yang
- Agriculture and Agri-Food Canada Lacombe Research Centre, 6000 C & E Trail, Lacombe, Alberta, Canada T4L 1W1
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Development of a novel bioactive packaging based on the incorporation of Lactobacillus sakei into sodium-caseinate films for controlling Listeria monocytogenes in foods. Food Res Int 2010. [DOI: 10.1016/j.foodres.2010.09.020] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Klein G. Antibiotic resistance and molecular characterization of probiotic and clinical Lactobacillus strains in relation to safety aspects of probiotics. Foodborne Pathog Dis 2010; 8:267-81. [PMID: 21034236 DOI: 10.1089/fpd.2010.0672] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The evaluation of the safety of probiotic strains includes the exclusion of antibiotic resistance of clinical importance. Ninety-two strains from the genus Lactobacillus isolated from probiotics, food, and clinical sources were included in the investigation. Species tested were the L. acidophilus group, L. casei group, L. reuteri/fermentum group, and L. sakei/curvatus group. Cell and colony morphology, fermentation patterns, and growth characteristics as well as soluble whole cell proteins were analyzed. Antibiotic resistance against clinically important agents was determined by broth dilution tests. The vanA and tet genes were confirmed. Resistances occurred mainly against gentamicin, ciprofloxacin, clindamycin, sulfonamides, and, in some cases, glycopeptides. The natural glycopeptide resistance within the L. casei group and L. reuteri appears to be not of clinical relevance, as there was no vanA gene present. Therefore, the transfer of this resistance is very unlikely. Tet-(A), -(B), -(C), -(M), or -(O) gene could not be detected. The protein fingerprinting within the L. casei group proved that L. rhamnosus strains of clinical origin clustered together with probiotic strains. For safety evaluations resistance patterns of a broad range of strains are a useful criterion together with the exclusion of known resistance genes (like the vanA gene) and can be used for decision making on the safety of probiotics, both by authorization bodies and manufacturers.
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Affiliation(s)
- Günter Klein
- Institute of Food Quality and Food Safety, University of Veterinary Medicine, Hannover, Germany.
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