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Gaillac A, Gourin C, Dubreil L, Briandet R, Prévost H, Jaffrès E. Biofilm formation of the food spoiler Brochothrix thermosphacta on different industrial surface materials using a biofilm reactor. Food Microbiol 2024; 120:104457. [PMID: 38431311 DOI: 10.1016/j.fm.2023.104457] [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: 10/20/2023] [Revised: 12/15/2023] [Accepted: 12/22/2023] [Indexed: 03/05/2024]
Abstract
Brochothrix thermosphacta is considered as a major food spoiler bacteria. This study evaluates biofilm formation by B. thermosphacta CD337(2) - a strong biofilm producer strain - on three food industry materials (polycarbonate (PC), polystyrene (PS), and stainless steel (SS)). Biofilms were continuously grown under flow at 25 °C in BHI broth in a modified CDC biofilm reactor. Bacterial cells were enumerated by plate counting, and biofilm spatial organization was deciphered by combining confocal laser scanning microscopy and image analysis. The biofilms had the same growth kinetics on all three materials and reach 8log CFU/cm2 as maximal concentration. Highly structured biofilms were observed on PC and PS, but less structured ones on SS. This difference was confirmed by structural quantification analysis using the image analysis software tool BiofilmQ. Biofilm on SS show less roughness, density, thickness and volume. The biofilm 3D structure seemed to be related to the coupon topography and roughness. The materials used in this study do not affect biofilm growth. However, their roughness and topography affect the biofilm architecture, which could influence biofilm behaviour.
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Affiliation(s)
| | | | | | - Romain Briandet
- Université Paris-Saclay, INRAE, AgroParisTech, Micalis Institute, Jouy-en-Josas, France
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Ramos-Vivas J, Tapia O, Elexpuru-Zabaleta M, Pifarre KT, Armas Diaz Y, Battino M, Giampieri F. The Molecular Weaponry Produced by the Bacterium Hafnia alvei in Foods. Molecules 2022; 27:molecules27175585. [PMID: 36080356 PMCID: PMC9457839 DOI: 10.3390/molecules27175585] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 08/24/2022] [Accepted: 08/26/2022] [Indexed: 11/16/2022] Open
Abstract
Hafnia alvei is receiving increasing attention from both a medical and veterinary point of view, but the diversity of molecules it produces has made the interest in this bacterium extend to the field of probiotics, the microbiota, and above all, to its presence and action on consumer foods. The production of Acyl Homoserine Lactones (AHLs), a type of quorum-sensing (QS) signaling molecule, is the most often-studied chemical signaling molecule in Gram-negative bacteria. H. alvei can use this communication mechanism to promote the expression of certain enzymatic activities in fermented foods, where this bacterium is frequently present. H. alvei also produces a series of molecules involved in the modification of the organoleptic properties of different products, especially cheeses, where it shares space with other microorganisms. Although some strains of this species are implicated in infections in humans, many produce antibacterial compounds, such as bacteriocins, that inhibit the growth of true pathogens, so the characterization of these molecules could be very interesting from the point of view of clinical medicine and the food industry. Lastly, in some cases, H. alvei is responsible for the production of biogenic amines or other compounds of special interest in food health. In this article, we will review the most interesting molecules that produce the H. alvei strains and will discuss some of their properties, both from the point of view of their biological activity on other microorganisms and the properties of different food matrices in which this bacterium usually thrives.
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Affiliation(s)
- José Ramos-Vivas
- Research Group on Foods, Nutritional Biochemistry and Health, Universidad Europea del Atlántico, 39011 Santander, Spain
- Research Group on Foods, Nutritional Biochemistry and Health, Universidad Internacional Iberoamericana, Campeche 24560, Mexico
- CIBER of Infectious Diseases—CIBERINFEC, Instituto de Salud Carlos III, 28029 Madrid, Spain
- Correspondence: (J.R.-V.); (M.B.)
| | - Olga Tapia
- Research Group on Foods, Nutritional Biochemistry and Health, Universidad Europea del Atlántico, 39011 Santander, Spain
| | - María Elexpuru-Zabaleta
- Research Group on Foods, Nutritional Biochemistry and Health, Universidad Europea del Atlántico, 39011 Santander, Spain
| | - Kilian Tutusaus Pifarre
- Research Group on Foods, Nutritional Biochemistry and Health, Universidad Europea del Atlántico, 39011 Santander, Spain
- Research Group on Foods, Nutritional Biochemistry and Health, Universidad Internacional Iberoamericana, Campeche 24560, Mexico
| | - Yasmany Armas Diaz
- Department of Clinical Sciences, Polytechnic University of Marche, 60131 Ancona, Italy
| | - Maurizio Battino
- Research Group on Foods, Nutritional Biochemistry and Health, Universidad Europea del Atlántico, 39011 Santander, Spain
- Department of Clinical Sciences, Polytechnic University of Marche, 60131 Ancona, Italy
- International Joint Research Laboratory of Intelligent Agriculture and Agri-Products Processing, Jiangsu University, Zhenjiang 212013, China
- Correspondence: (J.R.-V.); (M.B.)
| | - Francesca Giampieri
- Research Group on Foods, Nutritional Biochemistry and Health, Universidad Europea del Atlántico, 39011 Santander, Spain
- Department of Biochemistry, Faculty of Sciences, King Abdulaziz University, Jeddah 80200, Saudi Arabia
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Li H, Xi B, Yang X, Wang H, He X, Li W, Gao Y. Evaluation of change in quality indices and volatile flavor components in raw milk during refrigerated storage. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.113674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Impact of Industrial Practices on the Microbial and Quality Attributes of Fresh Vacuum-Packed Lamb Joints. Foods 2022; 11:foods11131850. [PMID: 35804666 PMCID: PMC9266051 DOI: 10.3390/foods11131850] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 06/03/2022] [Accepted: 06/09/2022] [Indexed: 02/05/2023] Open
Abstract
The impact of different industrial practices at lamb export abattoirs in Ireland on the microbial and quality attributes of fresh vacuum-packed (VP) lamb leg joints, including Clean Livestock Policy (CLP), fleece clipping, carcass chilling times and vacuum pack storage, at typical chill and retail display temperatures was investigated. Five separate slaughter batches of lamb (ranging in size from 38 to 60 lambs) were followed at two lamb export plants over a two-year period, accounting for seasonal variation. In general, fleece clipping resulted in significantly lower microbial contamination on the fleece than the use of CLP alone. Lamb from carcasses chilled for 24 h had significantly lower psychrophilic total viable counts and Brochothrix thermosphacta and pseudomonad counts than carcasses chilled for 72 h. Following vacuum-packed (VP) storage of meat from these carcasses at 1.7 ± 1.6 °C for 23 days in the meat plant followed by retail display at 3.9 ± 1.7 °C (up to day 50), the dominant microorganisms were lactic acid bacteria, Br. thermosphacta, Enterobacteriaceae and pseudomonads, and all had reached maximum population density by storage day 34. Aligned with this, after day 34, the quality of the raw meat samples also continued to deteriorate, with off-odours and colour changes developing. While the mean values for cooked meat eating quality attributes did not change significantly over the VP storage period, high variability in many attributes, including off-flavours and off-odours, were noted for lamb meat from all storage times, highlighting inconsistences in lamb quality within and between slaughter batches.
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5
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Effect of plasma activated water on the nutritional composition, storage quality and microbial safety of beef. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2021.112794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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6
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Bassey AP, Ye K, Li C, Zhou G. Transcriptomic-proteomic integration: A powerful synergy to elucidate the mechanisms of meat spoilage in the cold chain. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2021.02.051] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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7
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Microbiological assessment of aerobically stored horse fillets through predictive microbiology and metabolomic approach. Meat Sci 2021; 172:108323. [DOI: 10.1016/j.meatsci.2020.108323] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 09/23/2020] [Accepted: 09/25/2020] [Indexed: 02/06/2023]
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8
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Heydari S, Jooyandeh H, Alizadeh Behbahani B, Noshad M. The impact of Qodume Shirazi seed mucilage-based edible coating containing lavender essential oil on the quality enhancement and shelf life improvement of fresh ostrich meat: An experimental and modeling study. Food Sci Nutr 2020; 8:6497-6512. [PMID: 33312535 PMCID: PMC7723187 DOI: 10.1002/fsn3.1940] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 09/22/2020] [Accepted: 09/26/2020] [Indexed: 02/03/2023] Open
Abstract
Today, food consumers prefer to use the foods that contain natural preservatives. The purpose of this study was to investigate the effect of Qodume Shirazi seed mucilage (QSSM) and lavender essential oil (LO) on the preservation of ostrich meat during cold storage. The chemical compounds of LO were identified through gas chromatography-mass spectrometry (GC/MS). The ostrich meat samples were coated with the mucilage containing the essential oil at concentrations of 0%, 0.5%, 1%, 1.5%, and 2%, v/v. The control and the coated ostrich meat samples were kept at 4°C and analyzed for microbiological (total viable count, psychrotrophic count, Escherichia coli, Staphylococcus aureus, coliforms, and fungi), physicochemical (moisture content, pH, texture, and color parameters), and sensorial (odor, color, and total acceptance) characteristics during 9 days of storage. GC/MS identified 12 compounds in the essential oil, among which linalool was the major one (43.3%). The lightness (L* value) and hardness of all the ostrich meat samples were reduced during the storage. From a microbiological point of view, the cold storage duration for the control and the coated sample without the essential oil was only 3 days, while for coated samples containing 0.5%, 1%, 1.5%, and 2% essential oil, it was 3, 3, 6, and 9 days, respectively. The coated ostrich meat containing 2% LO had an appropriate quality with an expanded shelf life. The results showed that neural network with 10 neurons in the hidden layer had the lowest mean squared error and mean absolute error and the highest correlation coefficient for predicting the quality and microbial properties of the coated meat samples during storage.
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Affiliation(s)
- Samaneh Heydari
- Department of Food Science and TechnologyFaculty of Animal Science and Food TechnologyAgricultural Sciences and Natural Resources University of KhuzestanMollasaniIran
| | - Hossein Jooyandeh
- Department of Food Science and TechnologyFaculty of Animal Science and Food TechnologyAgricultural Sciences and Natural Resources University of KhuzestanMollasaniIran
| | - Behrooz Alizadeh Behbahani
- Department of Food Science and TechnologyFaculty of Animal Science and Food TechnologyAgricultural Sciences and Natural Resources University of KhuzestanMollasaniIran
| | - Mohammad Noshad
- Department of Food Science and TechnologyFaculty of Animal Science and Food TechnologyAgricultural Sciences and Natural Resources University of KhuzestanMollasaniIran
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Lu P, Yang Y, Liu R, Liu X, Ma J, Wu M, Wang S. Preparation of sugarcane bagasse nanocellulose hydrogel as a colourimetric freshness indicator for intelligent food packaging. Carbohydr Polym 2020; 249:116831. [DOI: 10.1016/j.carbpol.2020.116831] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 07/24/2020] [Accepted: 07/25/2020] [Indexed: 02/07/2023]
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10
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Papadopoulou OS, Iliopoulos V, Mallouchos A, Panagou EZ, Chorianopoulos N, Tassou CC, Nychas GJE. Spoilage Potential of Pseudomonas ( P. fragi, P. putida) and LAB ( Leuconostoc mesenteroides, Lactobacillus sakei) Strains and Their Volatilome Profile During Storage of Sterile Pork Meat Using GC/MS and Data Analytics. Foods 2020; 9:E633. [PMID: 32423080 PMCID: PMC7278706 DOI: 10.3390/foods9050633] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 05/09/2020] [Accepted: 05/11/2020] [Indexed: 01/22/2023] Open
Abstract
The aim of the present study was to investigate the evolution of the volatile compounds of aerobically stored sterile pork meat as a consequence of the metabolic activities of inoculated specific spoilage microorganisms. Thus, Pseudomonas fragi, Pseudomonas putida, Lactobacillus sakei and Leuconostoc mesenteroides were inoculated in monocultures, dual cultures and a cocktail culture of all strains on sterile pork meat stored aerobically at 4 and 10 °C. Microbiological and sensory analyses, as well as pH measurements, were performed, along with headspace solid-phase microextraction gas chromatography/mass spectroscopy (headspace SPME-GC/MS) analysis. Data analytics were used to correlate the volatile compounds with the spoilage potential of each stain using multivariate data analysis. The results for the sensory discrimination showed that the volatiles that dominated in spoiled samples consisted mostly of alcohols, ketones and two esters (butyl acetate and ethyl acetate), while at fresh samples, dimethyl sulfide, furans, acetoin and ethyl lactate were detected. On the other hand, 2-butanone, diacetyl and acetaldehyde were among the volatile compounds that were mainly correlated with the inoculated meat during storage. In addition, P. fragi was positively correlated with a higher number of volatiles compared to the other strains, strengthening the hypothesis that volatile compound production is strain-dependent.
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Affiliation(s)
- Olga S. Papadopoulou
- Laboratory of Microbiology and Biotechnology of Foods, School of Food and Nutritional Sciences, Department of Food Science and Human Nutrition, Agricultural University of Athens, Iera Odos 75, 11855 Athens, Attica, Greece; (O.S.P.); (V.I.); (E.Z.P.)
- Hellenic Agricultural Organization “DEMETER”, Institute of Technology of Agricultural Products, Sof. Venizelou 1, 14123 Lycovrissi, Attica, Greece; (N.C.); (C.C.T.)
| | - Vasilis Iliopoulos
- Laboratory of Microbiology and Biotechnology of Foods, School of Food and Nutritional Sciences, Department of Food Science and Human Nutrition, Agricultural University of Athens, Iera Odos 75, 11855 Athens, Attica, Greece; (O.S.P.); (V.I.); (E.Z.P.)
| | - Athanasios Mallouchos
- Laboratory of Food Chemistry and Analysis, School of Food and Nutritional Sciences, Department of Food Science and Human Nutrition, Agricultural University of Athens, Iera Odos 75, 11855 Athens, Attica, Greece
| | - Efstathios Z. Panagou
- Laboratory of Microbiology and Biotechnology of Foods, School of Food and Nutritional Sciences, Department of Food Science and Human Nutrition, Agricultural University of Athens, Iera Odos 75, 11855 Athens, Attica, Greece; (O.S.P.); (V.I.); (E.Z.P.)
| | - Nikos Chorianopoulos
- Hellenic Agricultural Organization “DEMETER”, Institute of Technology of Agricultural Products, Sof. Venizelou 1, 14123 Lycovrissi, Attica, Greece; (N.C.); (C.C.T.)
| | - Chrysoula C. Tassou
- Hellenic Agricultural Organization “DEMETER”, Institute of Technology of Agricultural Products, Sof. Venizelou 1, 14123 Lycovrissi, Attica, Greece; (N.C.); (C.C.T.)
| | - George-John E. Nychas
- Laboratory of Microbiology and Biotechnology of Foods, School of Food and Nutritional Sciences, Department of Food Science and Human Nutrition, Agricultural University of Athens, Iera Odos 75, 11855 Athens, Attica, Greece; (O.S.P.); (V.I.); (E.Z.P.)
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Illikoud N, Gohier R, Werner D, Barrachina C, Roche D, Jaffrès E, Zagorec M. Transcriptome and Volatilome Analysis During Growth of Brochothrix thermosphacta in Food: Role of Food Substrate and Strain Specificity for the Expression of Spoilage Functions. Front Microbiol 2019; 10:2527. [PMID: 31781057 PMCID: PMC6856214 DOI: 10.3389/fmicb.2019.02527] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Accepted: 10/21/2019] [Indexed: 11/13/2022] Open
Abstract
Brochothrix thermosphacta is one of the main spoilers in food, responsible for meat and seafood spoilage through the production of malodorous volatile organic compounds. The molecules produced by this bacterium depend on the substrate (meat or seafood) and the storage conditions such as gas mixtures used in the packaging. It seems also that the spoilage potential is strain dependent as production of diacetyl and acetoin, two molecules responsible for seafood spoilage, varies with strains. Therefore, this suggests the involvement of different metabolic functions depending on both food substrate and strain capacities. In this study, we selected two strains with different abilities to produce diacetyl and acetoin and compared their behavior after grown in beef or cooked peeled shrimp juices. We determined the genes upregulated by both strains depending on the growth substrate and those that were specifically upregulated in only one strain. The genes upregulated by both strains in meat or in shrimp juice revealed the importance of the substrate for inducing specific metabolic pathways. The examination of genes that were specifically upregulated in only one of the two strains revealed strain features associated to specific substrates and also strain-specific regulations of metabolic pathways putatively leading to different levels of spoilage molecule production. This shows that the spoilage potential of B. thermosphacta depends on nutrients provided by food substrate and on metabolic activity potential that each strain possesses.
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Affiliation(s)
| | | | | | - Célia Barrachina
- MGX, CNRS, INSERM, University of Montpellier, Montpellier, France
| | - David Roche
- Génomique Métabolique, Génoscope, Institut François Jacob, CEA, CNRS, Université d'Evry, Université Paris-Saclay, Evry, France
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Wickramasinghe NN, Ravensdale J, Coorey R, Chandry SP, Dykes GA. The Predominance of Psychrotrophic Pseudomonads on Aerobically Stored Chilled Red Meat. Compr Rev Food Sci Food Saf 2019; 18:1622-1635. [DOI: 10.1111/1541-4337.12483] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 06/27/2019] [Accepted: 07/02/2019] [Indexed: 01/05/2023]
Affiliation(s)
- Nirmani N. Wickramasinghe
- School of Public HealthCurtin Univ. Perth Western Australia 6845 Australia
- Dept. of Agriculture and FoodCSIRO Werribee Victoria 3030 Australia
| | - Joshua Ravensdale
- School of Public HealthCurtin Univ. Perth Western Australia 6845 Australia
| | - Ranil Coorey
- School of Molecular an Health SciencesCurtin Univ. Perth Western Australia 6845 Australia
| | - Scott P. Chandry
- Dept. of Agriculture and FoodCSIRO Werribee Victoria 3030 Australia
| | - Gary A. Dykes
- School of Public HealthCurtin Univ. Perth Western Australia 6845 Australia
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A volatilomics approach for off-line discrimination of minced beef and pork meat and their admixture using HS-SPME GC/MS in tandem with multivariate data analysis. Meat Sci 2019; 151:43-53. [DOI: 10.1016/j.meatsci.2019.01.003] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2018] [Revised: 01/13/2019] [Accepted: 01/15/2019] [Indexed: 01/06/2023]
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14
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Janßen D, Ehrmann MA, Vogel RF. Monitoring of assertive Lactobacillus sakei and Lactobacillus curvatus strains using an industrial ring trial experiment. J Appl Microbiol 2018; 126:545-554. [PMID: 30383919 DOI: 10.1111/jam.14144] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2018] [Revised: 10/18/2018] [Accepted: 10/20/2018] [Indexed: 11/30/2022]
Abstract
AIMS In a previous study, we used a 5-day fermenting sausage model to characterize assertiveness of Lactobacillus curvatus and Lactobacillus sakei starter strains towards employ autochthonous contaminants. In this work, we probed those findings and their transferability to real sausage fermentation including the drying process in an industrial ring trial experiment. METHODS AND RESULTS Raw fermented sausages ('salami') were produced with three L. curvatus and four L. sakei strains as starter cultures in cooperation with three manufacturers from Germany. We monitored pH, water activity and microbiota dynamics at strain level over a total fermentation and ripening time of 21 days by MALDI-TOF-MS identification of isolates. The principal behaviour of the strains in real sausage fermentations was the same as that one observed in the 5-day model system delineating single strain assertiveness of a bacteriocin producer from co-dominance of strains. CONCLUSIONS The water activity decrease, which is concomitant with the sausage ripening process has only limited impact on the assertiveness and survival of the starter strains. SIGNIFICANCE AND IMPACT OF THE STUDY Results of a 5-day model can provide insight in the assertiveness of a specific starter strain in sausage fermentation.
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Affiliation(s)
- D Janßen
- Technische Universität München, Lehrstuhl für Technische Mikrobiologie, Freising, Germany
| | - M A Ehrmann
- Technische Universität München, Lehrstuhl für Technische Mikrobiologie, Freising, Germany
| | - R F Vogel
- Technische Universität München, Lehrstuhl für Technische Mikrobiologie, Freising, Germany
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Janßen D, Eisenbach L, Ehrmann MA, Vogel RF. Assertiveness of Lactobacillus sakei and Lactobacillus curvatus in a fermented sausage model. Int J Food Microbiol 2018; 285:188-197. [DOI: 10.1016/j.ijfoodmicro.2018.04.030] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Revised: 04/11/2018] [Accepted: 04/16/2018] [Indexed: 11/15/2022]
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16
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Reid R, Fanning S, Whyte P, Kerry J, Bolton D. An investigation of the effect of rapid slurry chilling on blown pack spoilage of vacuum-packaged beef primals. Lett Appl Microbiol 2017; 64:177-181. [PMID: 27981595 DOI: 10.1111/lam.12703] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Revised: 12/02/2016] [Accepted: 12/02/2016] [Indexed: 11/26/2022]
Abstract
The aim of this study was to investigate if rapid slurry chilling would retard or prevent blown pack spoilage (BPS) of vacuum-packaged beef primals. Beef primals were inoculated with Clostridium estertheticum subspp. estertheticum (DSMZ 8809), C. estertheticum subspp. laramenise (DSMZ 14864) and C. gasigenes (DSMZ 12272), and vacuum-packaged with and without heat shrinkage (90°C for 3 s). These packs were then subjected to immediate chilling in an ice slurry or using conventional blast chilling systems and stored at 2°C for up to 100 days. The onset and progress of BPS was monitored using the following scale; 0-no gas bubbles in drip; 1-gas bubbles in drip; 2-loss of vacuum; 3-'blown'; 4-presence of sufficient gas inside the packs to produce pack distension and 5-tightly stretched, 'overblown' packs/packs leaking. Rapid slurry chilling (as compared to conventional chilling) did not significantly affect (P > 0.05) the time to the onset or progress of BPS. It was therefore concluded that rapid chilling of vacuum-packaged beef primals, using an ice slurry system, may not be used as a control intervention to prevent or retard blown pack spoilage. SIGNIFICANCE AND IMPACT OF THE STUDY This study adds to our growing understanding of blown pack spoilage of vacuum-packaged beef primals and suggests that rapid chilling of vacuum-packaged beef primals is not a control option for the beef industry. The results suggest that neither eliminating the heat shrinkage step nor rapid chilling of vacuum-packaged beef retard the time to blown pack spoilage.
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Affiliation(s)
- R Reid
- Teagasc Food Research Centre, Ashtown, Dublin 15, Ireland
| | - S Fanning
- University College Dublin, Belfield, Dublin 4, Ireland
| | - P Whyte
- University College Dublin, Belfield, Dublin 4, Ireland
| | - J Kerry
- University College Cork, College Road, Cork, Ireland
| | - D Bolton
- Teagasc Food Research Centre, Ashtown, Dublin 15, Ireland
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Rodrigues JBM, Sarantópoulos CIGL, Bromberg R, Andrade JC, Brunelli K, Miyagusku L, Marquezini MG, Yamada EA. Evaluation of the effectiveness of non-irradiated and chlorine-free packaging for fresh beef preservation. Meat Sci 2016; 125:30-36. [PMID: 27883959 DOI: 10.1016/j.meatsci.2016.11.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Revised: 11/08/2016] [Accepted: 11/10/2016] [Indexed: 10/20/2022]
Abstract
This study evaluates the potential of using non-irradiated barrier-shrink bags containing ethylene-vinyl alcohol copolymer (EVOH), polyamide (PA) and ethylene ionomer in their structures to preserve vacuum-packaged fresh beef as an alternative to traditional gamma-ray cross-linked bags containing polyvinylidene chloride (PVDC). Boneless beef rib eye roll cuts were vacuum-packed in an industrial processing plant using EVOH 44% mol, EVOH 32% mol and a control PVDC barrier shrink bags. The cuts were evaluated during storage at 0.5°C. The EVOH films presented similar performance compared to control PVDC barrier shrink bags related to bacteria growth and purge loss. Packages with EVOH 32% mol film presented better performance than control bag with respect to the meat sensorial attributes, including fewer bubbles and better adhesion. EVOH 44% mol bags presented the highest rate of colour loss. The EVOH 32% mol non-irradiated and chlorine-free film is as effective for the preservation of fresh beef as traditional PVDC-irradiated shrink bags.
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18
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Behbahani BA, Shahidi F, Yazdi FT, Mortazavi SA, Mohebbi M. Use of Plantago major seed mucilage as a novel edible coating incorporated with Anethum graveolens essential oil on shelf life extension of beef in refrigerated storage. Int J Biol Macromol 2016; 94:515-526. [PMID: 27771410 DOI: 10.1016/j.ijbiomac.2016.10.055] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Revised: 10/03/2016] [Accepted: 10/17/2016] [Indexed: 01/03/2023]
Abstract
In this study, Plantago major seed mucilage (PMSM) was extracted from whole seeds using hot-water extraction (HWE). The dill (D) essential oil components were identified through gas chromatography (GC) and gas chromatography/mass spectrometry (GC/MS) and its antioxidant properties were examined through the methods of 2,2-diphenyl-1-picrylhydrazyl (DPPH), ferric reducing antioxidant potential (FRAP) and ß-carotene-linoleic acid assay (B-CL). Total phenolic content (TPC) was characterized through the Folin-Ciocalteu method and the antimicrobial effect was evaluated on 10 pathogenic microorganisms. PMSM edible coating incorporated were prepared in four different concentrations of essential oils, including 0, 0.5, 1 and 1.5% (w/w). The control and the coated beef samples were analyzed periodically for microbiological (total viable count, psychrotrophic count, Escherichia coli, Staphylococcus aureus and fungi), chemical (thiobarbituric acid, peroxide value and pH), and sensory characteristics. The IC50, FRAP, B-CL and TPC of the dill essential oil were equal to 11.44μg/ml, 9.45mmol/g, 82.86 and 162.65μg/ml GAE, respectively. PMSM extended the microbial shelf life of beef by 3days, whereas the PMSM+0.5%D, PMSM+1%D and PMSM+1.5%D resulted in a significant shelf life extension of the beef by 6, 9 and 9days, respectively, as compared to the control samples.
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Affiliation(s)
- Behrooz Alizadeh Behbahani
- Department of Food Science and Technology, Ferdowsi University of Mashhad, P.O. Box: 91775-1163, Mashhad, Iran
| | - Fakhri Shahidi
- Department of Food Science and Technology, Ferdowsi University of Mashhad, P.O. Box: 91775-1163, Mashhad, Iran.
| | - Farideh Tabatabaei Yazdi
- Department of Food Science and Technology, Ferdowsi University of Mashhad, P.O. Box: 91775-1163, Mashhad, Iran
| | - Seyed Ali Mortazavi
- Department of Food Science and Technology, Ferdowsi University of Mashhad, P.O. Box: 91775-1163, Mashhad, Iran
| | - Mohebbat Mohebbi
- Department of Food Science and Technology, Ferdowsi University of Mashhad, P.O. Box: 91775-1163, Mashhad, Iran
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Casu F, Pinu FR, Fedrizzi B, Greenwood DR, Villas-Boas SG. The effect of linoleic acid on the Sauvignon blanc fermentation by different wine yeast strains. FEMS Yeast Res 2016; 16:fow050. [PMID: 27364827 DOI: 10.1093/femsyr/fow050] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/20/2016] [Indexed: 11/13/2022] Open
Abstract
The level of linoleic acid in the Sauvignon blanc (SB) grape juice affects the development of different aroma compounds during fermentation by Saccharomyces cerevisiae EC1118, including key varietal thiols such as 3-mercaptohexanol (3MH) and 3-mercaptohexyl acetate (3MHA). However, it is still unknown if linoleic acid would affect in a similar way other commonly used S. cerevisiae wine strains. Here we investigated the effect of grape juice linoleic acid on the development of aroma compounds and other metabolites of SB wines using different wine yeast strains: EC1118, AWRI796 and VIN13. Linoleic acid clearly affected the levels of acetylated aroma compounds, several amino acids, and antioxidant molecules, independent of yeast strain, but the production of 3MH was affected by linoleic acid in a strain-specific manner. Moreover, the supplementation of deuterium-labelled 3MH also affected the production of varietal thiols in a strain-specific way. Linoleic acid reduced the acetylation process probably by inhibiting an acetyltransferase, an effect that was independent of the yeast strain. However, regulation of the 3MH biosynthesis is strain-specific, which suggests a mindful consideration not only towards the wine yeast but also to the linoleic acid concentration in the grape juice in order to obtain the desired wine aroma characteristics.
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Affiliation(s)
- Francesca Casu
- School of Biological Sciences, the University of Auckland, 3A Symonds Street, Auckland 1010, New Zealand
| | - Farhana R Pinu
- The New Zealand Institute for Plant and Food Research Limited, 120 Mt Albert Rd, Sandringham, Auckland 1025, New Zealand
| | - Bruno Fedrizzi
- School of Chemical Sciences, the University of Auckland, 23 Symonds Street, Auckland 1010, New Zealand
| | - David R Greenwood
- School of Biological Sciences, the University of Auckland, 3A Symonds Street, Auckland 1010, New Zealand The New Zealand Institute for Plant and Food Research Limited, 120 Mt Albert Rd, Sandringham, Auckland 1025, New Zealand
| | - Silas G Villas-Boas
- School of Biological Sciences, the University of Auckland, 3A Symonds Street, Auckland 1010, New Zealand
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Lyte JM, Legako JF, Martin JN, Thompson L, Surowiec K, Brooks J. Volatile compound characterization of modified atmosphere packaged ground beef held under temperature abuse. Food Control 2016. [DOI: 10.1016/j.foodcont.2015.04.041] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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21
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Nieminen TT, Dalgaard P, Björkroth J. Volatile organic compounds and Photobacterium phosphoreum associated with spoilage of modified-atmosphere-packaged raw pork. Int J Food Microbiol 2015; 218:86-95. [PMID: 26623935 DOI: 10.1016/j.ijfoodmicro.2015.11.003] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2015] [Revised: 10/13/2015] [Accepted: 11/10/2015] [Indexed: 01/24/2023]
Abstract
Accumulation of volatile organic compounds was monitored in association with sensory quality, bacterial concentrations and culture-independent microbial community analyses in raw pork loin and pork collar during storage under high-oxygen modified atmosphere at +4 °C. Of the 48 volatile compounds detected in the pork samples, the levels of acetoin, diacetyl and 3-methyl-1-butanol had the highest correlations with the sensory scores and bacterial concentrations. These compounds accumulated in all of the four monitored lots of non-sterile pork but not in the sterilized pork during chilled storage. According to the culture-dependent and culture-independent characterization of bacterial communities, Brochothrix thermosphacta, lactic acid bacteria (Carnobacterium, Lactobacillus, Lactococcus, Leuconostoc, Weissella) and Photobacterium spp. predominated in pork samples. Photobacterium spp., typically not associated with spoilage of meat, were detected also in 8 of the 11 retail packages of pork investigated subsequently. Eleven isolates from the pork samples were shown to belong to Photobacterium phosphoreum by phenotypic tests and sequencing of the 16S rRNA and gyrB gene fragments. Off-odors in pork samples with high proportion of Photobacterium spp. were associated with accumulation of acetoin, diacetyl and 3-methyl-1-butanol in meat, but these compounds did not explain all the off-odors reported in sensory analyses.
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Affiliation(s)
- Timo T Nieminen
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, University of Helsinki, P.O. Box 66, 00014, Finland.
| | - Paw Dalgaard
- National Food Institute (DTU Food), Technical University of Denmark, Søltofts Plads, Building 221, 2800 Kgs. Lyngby, Denmark
| | - Johanna Björkroth
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, University of Helsinki, P.O. Box 66, 00014, Finland
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Remenant B, Jaffrès E, Dousset X, Pilet MF, Zagorec M. Bacterial spoilers of food: Behavior, fitness and functional properties. Food Microbiol 2015; 45:45-53. [DOI: 10.1016/j.fm.2014.03.009] [Citation(s) in RCA: 132] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2014] [Revised: 03/11/2014] [Accepted: 03/13/2014] [Indexed: 01/24/2023]
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Argyri AA, Mallouchos A, Panagou EZ, Nychas GJE. The dynamics of the HS/SPME–GC/MS as a tool to assess the spoilage of minced beef stored under different packaging and temperature conditions. Int J Food Microbiol 2015; 193:51-8. [DOI: 10.1016/j.ijfoodmicro.2014.09.020] [Citation(s) in RCA: 89] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Revised: 06/15/2014] [Accepted: 09/20/2014] [Indexed: 02/07/2023]
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Iacumin L, Vendrame M, Comi G. Microbial spoilage of traditional dry sausages produced in small-scale facilities in Friuli, a north-eastern region of Italy. ACTA ALIMENTARIA 2013. [DOI: 10.1556/aalim.42.2013.3.12] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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26
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Säde E, Murros A, Björkroth J. Predominant enterobacteria on modified-atmosphere packaged meat and poultry. Food Microbiol 2013; 34:252-8. [DOI: 10.1016/j.fm.2012.10.007] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2012] [Revised: 10/11/2012] [Accepted: 10/23/2012] [Indexed: 01/20/2023]
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27
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Paczkowski S, Maibaum F, Paczkowska M, Schütz S. Decaying mouse volatiles perceived by Calliphora vicina Rob.-Desv. J Forensic Sci 2012; 57:1497-506. [PMID: 22970999 DOI: 10.1111/j.1556-4029.2012.02245.x] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2010] [Revised: 07/15/2011] [Accepted: 08/07/2011] [Indexed: 11/28/2022]
Abstract
Volatiles emitted by decaying human remains are in the focus of recent research. The identification of core volatiles in this field is of high importance, because cadaveric volatiles generally show high variation. In this study, the volatile profiles of five mice (Myodes glareolus) were sampled with charcoal filter tubes from their time of death until advanced decay. Eleven compounds were quantitated by means of gas chromatography-mass spectrometry. Electroantennographic experiments with female Calliphora vicina antennae led to the identification of dimethyl trisulfide, dimethyl disulfide, nonanal, hexan-1-ol, 1-octen-3-ol, 3-methylbutan-1-ol, and heptanal as electrophysiologically active compounds. When these were compared, dimethyl trisulfide (17 ng/μL) and dimethyl disulfide (11 ng/μL) were found to be emitted in higher concentrations. The roles of these compounds and nonanal as core volatiles for cadaver detection or postmortem time determination and their correlation to the stages of decay and the accumulated degree days are discussed.
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Affiliation(s)
- Sebastian Paczkowski
- Department of Forest Zoology and Forest Conservation, Büsgeninstitut, Georg-August-University, Göttingen, Germany.
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La Storia A, Ferrocino I, Torrieri E, Di Monaco R, Mauriello G, Villani F, Ercolini D. A combination of modified atmosphere and antimicrobial packaging to extend the shelf-life of beefsteaks stored at chill temperature. Int J Food Microbiol 2012; 158:186-94. [PMID: 22883207 DOI: 10.1016/j.ijfoodmicro.2012.07.011] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2012] [Revised: 07/03/2012] [Accepted: 07/08/2012] [Indexed: 10/28/2022]
Abstract
An antimicrobial polyethylene (PE) film was obtained by coating a nisin-based antimicrobial solution. PE sheets were coated on both sides and were used for the packaging of beefsteaks to be stored in air or modified atmosphere packaging (MAP, 60% O₂-40% CO₂). Microbial populations, species diversity, headspace volatile organic compounds, colour and sensory properties were monitored after 0, 1, 7 and 12 days of storage at 4 °C. The viable counts showed that there was an effect of MAP and antimicrobial film on the development of all the spoilage associated microbial populations. Carnobacterium spp., Brochothrix thermosphacta, Pseudomonas fragi and Rhanella aquatilis were found in most of the samples. C. maltaromaticum was identified in MRS bulk cells from samples stored in air as well as MAP. Quantitative data of headspace-SPME-GC/MS analysis showed that during storage the production of volatile organic compounds (VOCs) was affected by the use of the treated film and the MAP storage. Compounds such as phenylethylalcohol, nonanal, decanal and ethylbutanoate were produced only from 7 to 12 day of storage and only in the samples stored in air. In agreement with the microbiological and VOCs data, the meat stored in active packaging scored the best rankings in the sensory evaluation. Principal component analysis of microbial, sensory and instrumental data showed that beefsteaks stored with the combination of MAP and active packaging for 12 days at 4 °C differed from the other samples that were more associated to high microbial loads, VOCs concentration and meat off odour perception. In conclusion, the antimicrobial sheets in combination with MAP storage at 4 °C were effective for the storage of beefsteaks by retarding the growth of spoilage bacteria, determining lower concentration of VOCs and keeping acceptable levels of colour and other sensory parameters for more than 10 days.
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Affiliation(s)
- Antonietta La Storia
- Dipartimento di Scienza degli Alimenti, Università degli Studi di Napoli Federico II, Via Università 100, 80055 Portici, Italy
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Ecological and aromatic impact of two Gram-negative bacteria (Psychrobacter celer and Hafnia alvei) inoculated as part of the whole microbial community of an experimental smear soft cheese. Int J Food Microbiol 2012; 153:332-8. [DOI: 10.1016/j.ijfoodmicro.2011.11.022] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2011] [Revised: 11/07/2011] [Accepted: 11/23/2011] [Indexed: 11/17/2022]
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30
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Ercolini D, Ferrocino I, Nasi A, Ndagijimana M, Vernocchi P, La Storia A, Laghi L, Mauriello G, Guerzoni ME, Villani F. Monitoring of microbial metabolites and bacterial diversity in beef stored under different packaging conditions. Appl Environ Microbiol 2011; 77:7372-81. [PMID: 21803905 PMCID: PMC3194879 DOI: 10.1128/aem.05521-11] [Citation(s) in RCA: 189] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2011] [Accepted: 07/19/2011] [Indexed: 12/17/2022] Open
Abstract
Beef chops were stored at 4°C under different conditions: in air (A), modified-atmosphere packaging (MAP), vacuum packaging (V), or bacteriocin-activated antimicrobial packaging (AV). After 0 to 45 days of storage, analyses were performed to determine loads of spoilage microorganisms, microbial metabolites (by solid-phase microextraction [SPME]-gas chromatography [GC]-mass spectrometry [MS] and proton nuclear magnetic resonance [(1)H NMR]), and microbial diversity (by PCR-denaturing gradient gel electrophoresis [DGGE] and pyrosequencing). The microbiological shelf life of meat increased with increasing selectivity of storage conditions. Culture-independent analysis by pyrosequencing of DNA extracted directly from meat showed that Brochothrix thermosphacta dominated during the early stages of storage in A and MAP, while Pseudomonas spp. took over during further storage in A. Many different bacteria, several of which are usually associated with soil rather than meat, were identified in V and AV; however, lactic acid bacteria (LAB) dominated during the late phases of storage, and Carnobacterium divergens was the most frequent microorganism in AV. Among the volatile metabolites, butanoic acid was associated with the growth of LAB under V and AV storage conditions, while acetoin was related to the other spoilage microbial groups and storage conditions. (1)H NMR analysis showed that storage in air was associated with decreases in lactate, glycogen, IMP, and ADP levels and with selective increases in levels of 3-methylindole, betaine, creatine, and other amino acids. The meat microbiota is significantly affected by storage conditions, and its changes during storage determine complex shifts in the metabolites produced, with a potential impact on meat quality.
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Affiliation(s)
- Danilo Ercolini
- Dipartimento di Scienza degli Alimenti, Università degli Studi di Napoli Federico II, Via Università 100, 80055 Portici (NA), Italy.
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31
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Paczkowski S, Schütz S. Post-mortem volatiles of vertebrate tissue. Appl Microbiol Biotechnol 2011; 91:917-35. [PMID: 21720824 PMCID: PMC3145088 DOI: 10.1007/s00253-011-3417-x] [Citation(s) in RCA: 85] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2011] [Revised: 05/24/2011] [Accepted: 05/24/2011] [Indexed: 11/12/2022]
Abstract
Volatile emission during vertebrate decay is a complex process that is understood incompletely. It depends on many factors. The main factor is the metabolism of the microbial species present inside and on the vertebrate. In this review, we combine the results from studies on volatile organic compounds (VOCs) detected during this decay process and those on the biochemical formation of VOCs in order to improve our understanding of the decay process. Micro-organisms are the main producers of VOCs, which are by- or end-products of microbial metabolism. Many microbes are already present inside and on a vertebrate, and these can initiate microbial decay. In addition, micro-organisms from the environment colonize the cadaver. The composition of microbial communities is complex, and communities of different species interact with each other in succession. In comparison to the complexity of the decay process, the resulting volatile pattern does show some consistency. Therefore, the possibility of an existence of a time-dependent core volatile pattern, which could be used for applications in areas such as forensics or food science, is discussed. Possible microbial interactions that might alter the process of decay are highlighted.
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Affiliation(s)
- Sebastian Paczkowski
- Department of Forest Zoology and Forest Conservation, Büsgeninstitut, Georg August University, Büsgenweg 3, 37077 Göttingen, Germany.
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Spoilage-related activity of Carnobacterium maltaromaticum strains in air-stored and vacuum-packed meat. Appl Environ Microbiol 2011; 77:7382-93. [PMID: 21784913 DOI: 10.1128/aem.05304-11] [Citation(s) in RCA: 109] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
One hundred three isolates of Carnobacterium spp. from raw meat were analyzed by random amplification of polymorphic DNA (RAPD) and PCR and were identified by 16S rRNA gene sequencing. Forty-five strains of Carnobacterium maltaromaticum were characterized for their growth capabilities at different temperatures, NaCl concentrations, and pH values and for in vitro lipolytic and proteolytic activities. Moreover, their spoilage potential in meat was investigated by analyzing the release of volatile organic compounds (VOCs) in meat stored in air or vacuum packs. Almost all the strains were able to grow at 4, 10, and 20°C, at pH values of 6 to 9, and in the presence of 2.5% NaCl. The release of VOCs by each strain in beef stored at 4°C in air and vacuum packs was evaluated by headspace solid-phase microextraction (HS-SPME)-gas chromatography-mass spectrometry (GC-MS) analysis. All the meat samples inoculated and stored in air showed higher numbers of VOCs than the vacuum-packed meat samples. Acetoin, 1-octen-3-ol, and butanoic acid were the compounds most frequently found under both storage conditions. The contaminated meat samples were evaluated by a sensory panel; the results indicated that for all sensory odors, no effect of strain was significant (P > 0.05). The storage conditions significantly affected (P < 0.05) the perception of dairy, spoiled-meat, and mozzarella cheese odors, which were more intense in meat stored in air than in vacuum packs but were never very intense. In conclusion, different strains of C. maltaromaticum can grow efficiently in meat stored at low temperatures both in air and in vacuum packs, producing volatile molecules with low sensory impacts, with a negligible contribution to meat spoilage overall.
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Rivas-Cañedo A, Juez-Ojeda C, Nuñez M, Fernández-García E. Volatile compounds in ground beef subjected to high pressure processing: A comparison of dynamic headspace and solid-phase microextraction. Food Chem 2011. [DOI: 10.1016/j.foodchem.2010.07.045] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Abstract
Microbial volatile organic compounds (MVOCs) are a variety of compounds formed in the metabolism of fungi and bacteria. Of more than 200 compounds identified as MVOCs in laboratory experiments, none can be regarded as exclusively of microbial origin or as specific for certain microbial species. Thus, the recognition of microbially contaminated areas by MVOC measurements is not successful with current methods. In this review, the basic physical and chemical properties of 96 typical MVOCs have been summarised. Of these, toxicological and exposure data were gathered for the 15 MVOCs most often analysed and reported in buildings with moisture and microbial damage. The most obvious health effect of MVOC exposure is eye and upper-airway irritation. However, in human experimental exposure studies, symptoms of irritation have appeared at MVOC concentrations several orders of magnitude higher than those measured indoors (single MVOC levels in indoor environments have ranged from a few ng/m(3) up to 1 mg/m(3)). This is also supported by dose-dependent sensory-irritation response, as determined by the American Society for Testing and Materials mouse bioassay. On the other hand, the toxicological database is poor even for the 15 examined MVOCs. There may be more potent compounds and other endpoints not yet evaluated.
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Affiliation(s)
- Anne Korpi
- University of Kuopio, Department of Environmental Science, Kuopio, Finland.
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35
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Linton C, Wright S. Volatile organic compounds: microbiological aspects and some technological implications. ACTA ACUST UNITED AC 2008. [DOI: 10.1111/j.1365-2672.1993.tb03400.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Signorini M, Ponce‐Alquicira E, Guerrero‐Legarreta I. Proteolytic and Lipolytic Changes in Beef Inoculated with Spoilage Microorganisms and Bioprotective Lactic Acid Bacteria. INTERNATIONAL JOURNAL OF FOOD PROPERTIES 2007. [DOI: 10.1081/jfp-120016631] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Marcelo Signorini
- a Departamento de Biotecnología , Universidad Autónoma Metropolitana , Apartado Postal 55‐535, C.P. 09340 , Mexico D.F. , Mexico
- b Departamento de Salud Pública Veterinaria, Facultad de Ciencias Veterinarias , Universidad Nacional del Litoral , Provincia de Santa Fe , Argentina
| | - Edith Ponce‐Alquicira
- a Departamento de Biotecnología , Universidad Autónoma Metropolitana , Apartado Postal 55‐535, C.P. 09340 , Mexico D.F. , Mexico
| | - Isabel Guerrero‐Legarreta
- a Departamento de Biotecnología , Universidad Autónoma Metropolitana , Apartado Postal 55‐535, C.P. 09340 , Mexico D.F. , Mexico
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Swiegers JH, Pretorius IS. Modulation of volatile sulfur compounds by wine yeast. Appl Microbiol Biotechnol 2007; 74:954-60. [PMID: 17262212 DOI: 10.1007/s00253-006-0828-1] [Citation(s) in RCA: 134] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2006] [Revised: 12/21/2006] [Accepted: 12/25/2006] [Indexed: 11/24/2022]
Abstract
Sulfur compounds in wine can be a 'double-edged sword'. On the one hand, certain sulfur-containing volatile compounds such as hydrogen sulfide, imparting a rotten egg-like aroma, can have a negative impact on the perceived quality of the wine, and on the other hand, some sulfur compounds such as 3-mercaptohexanol, imparting fruitiness, can have a positive impact on wine flavor and aroma. Furthermore, these compounds can become less or more attractive or repulsive depending on their absolute and relative concentrations. This presents an interesting challenge to the winemaker to modulate the concentrations of these quality-determining compounds in wine in accordance with consumer preferences. The wine yeast Saccharomyces cerevisiae plays a central role in the production of volatile sulfur compounds. Through the sulfate reduction sequence pathway, the HS(-) is formed, which can lead to the formation of hydrogen sulfide and various mercaptan compounds. Therefore, limiting the formation of the HS(-) ion is an important target in metabolic engineering of wine yeast. The wine yeast is also responsible for the transformation of non-volatile sulfur precursors, present in the grape, to volatile, flavor-active thiol compounds. In particular, 4-mercapto-4-methylpentan-2-one, 3-mercaptohexanol, and 3-mercaptohexyl acetate are the most important volatile thiols adding fruitiness to wine. This paper briefly reviews the metabolic processes involved in the production of important volatile sulfur compounds and the latest strategies in the pursuit of developing wine yeast strains as tools to adjust wine aroma to market specifications.
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Affiliation(s)
- J H Swiegers
- The Australian Wine Research Institute, PO Box 197, Glen Osmond, SA 5064 Adelaide, Australia
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38
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Kai M, Effmert U, Berg G, Piechulla B. Volatiles of bacterial antagonists inhibit mycelial growth of the plant pathogen Rhizoctonia solani. Arch Microbiol 2006; 187:351-60. [PMID: 17180381 DOI: 10.1007/s00203-006-0199-0] [Citation(s) in RCA: 206] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2006] [Revised: 10/16/2006] [Accepted: 11/14/2006] [Indexed: 10/23/2022]
Abstract
Bacterial antagonists are bacteria that negatively affect the growth of other organisms. Many antagonists inhibit the growth of fungi by various mechanisms, e.g., secretion of lytic enzymes, siderophores and antibiotics. Such inhibition of fungal growth may indirectly support plant growth. Here, we demonstrate that small organic volatile compounds (VOCs) emitted from bacterial antagonists negatively influence the mycelial growth of the soil-borne phytopathogenic fungus Rhizoctonia solani Kühn. Strong inhibitions (99-80%) under the test conditions were observed with Stenotrophomonas maltophilia R3089, Serratia plymuthica HRO-C48, Stenotrophomonas rhizophila P69, Serratia odorifera 4Rx13, Pseudomonas trivialis 3Re2-7, S. plymuthica 3Re4-18 and Bacillus subtilis B2g. Pseudomonas fluorescens L13-6-12 and Burkholderia cepacia 1S18 achieved 30% growth reduction. The VOC profiles of these antagonists, obtained through headspace collection and analysis on GC-MS, show different compositions and complexities ranging from 1 to almost 30 compounds. Most volatiles are species-specific, but overlapping volatile patterns were found for Serratia spp. and Pseudomonas spp. Many of the bacterial VOCs could not be identified for lack of match with mass-spectra of volatiles in the databases.
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Affiliation(s)
- Marco Kai
- Department of Biological Sciences, University of Rostock, Albert-Einstein-Str. 3, 18059 Rostock, Germany
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Fonnesbech Vogel B, Venkateswaran K, Satomi M, Gram L. Identification of Shewanella baltica as the most important H2S-producing species during iced storage of Danish marine fish. Appl Environ Microbiol 2005; 71:6689-97. [PMID: 16269698 PMCID: PMC1287644 DOI: 10.1128/aem.71.11.6689-6697.2005] [Citation(s) in RCA: 137] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Shewanella putrefaciens has been considered the main spoilage bacteria of low-temperature stored marine seafood. However, psychrotropic Shewanella have been reclassified during recent years, and the purpose of the present study was to determine whether any of the new Shewanella species are important in fish spoilage. More than 500 H2S-producing strains were isolated from iced stored marine fish (cod, plaice, and flounder) caught in the Baltic Sea during winter or summer time. All strains were identified as Shewanella species by phenotypic tests. Different Shewanella species were present on newly caught fish. During the warm summer months the mesophilic human pathogenic S. algae dominated the H2S-producing bacterial population. After iced storage, a shift in the Shewanella species was found, and most of the H2S-producing strains were identified as S. baltica. The 16S rRNA gene sequence analysis confirmed the identification of these two major groups. Several isolates could only be identified to the genus Shewanella level and were separated into two subgroups with low (44%) and high (47%) G+C mol%. The low G+C% group was isolated during winter months, whereas the high G+C% group was isolated on fish caught during summer and only during the first few days of iced storage. Phenotypically, these strains were different from the type strains of S. putrefaciens, S. oneidensis, S. colwelliana, and S. affinis, but the high G+C% group clustered close to S. colwelliana by 16S rRNA gene sequence comparison. The low G+C% group may constitute a new species. S. baltica, and the low G+C% group of Shewanella spp. strains grew well in cod juice at 0 degrees C, but three high G+C Shewanella spp. were unable to grow at 0 degrees C. In conclusion, the spoilage reactions of iced Danish marine fish remain unchanged (i.e., trimethylamine-N-oxide reduction and H2S production); however, the main H2S-producing organism was identified as S. baltica.
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Affiliation(s)
- Birte Fonnesbech Vogel
- Danish Institute for Fisheries Research, Department of Seafood Research, Søltofts Plads, c/o Technical University of Denmark, Bldg. 221, DK-2800 Kgs. Lyngby, Denmark.
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Scotter JM, Langford VS, Wilson PF, McEwan MJ, Chambers ST. Real-time detection of common microbial volatile organic compounds from medically important fungi by Selected Ion Flow Tube-Mass Spectrometry (SIFT-MS). J Microbiol Methods 2005; 63:127-34. [PMID: 15893831 DOI: 10.1016/j.mimet.2005.02.022] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2004] [Revised: 02/22/2005] [Accepted: 02/25/2005] [Indexed: 11/23/2022]
Abstract
We describe a new method, Selected Ion Flow Tube-Mass Spectrometry (SIFT-MS) for the rapid and sensitive real-time detection and quantification of volatile organic compounds from medically important fungi, grown on a range of laboratory media. SIFT-MS utilises the chemical ionisation reactions of mass-selected ions to characterise volatile organic compounds (VOCs) that are produced as metabolites from fungi. This technique has the distinct advantage over others in that it readily detects low molecular weight, reactive volatiles, and allows for real-time, quantitative monitoring. The fungi examined in this study were Aspergillus flavus, Aspergillus fumigatus, Candida albicans, Mucor racemosus, Fusarium solani, and Cryptococcus neoformans grown on or in malt extract agar, Columbia agar, Sabouraud's dextrose agar, blood agar, and brain-heart infusion broth. Common metabolites (ethanol, methanol, acetone, acetaldehyde, methanethiol, and crotonaldehyde) were detected and quantified. We found the fingerprint of volatiles, in terms of presence and quantity of volatiles to be strongly dependent on the culture medium, both in terms of variety and quantity of volatiles produced, but may form the basis for species specific identification of medically important fungi.
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Affiliation(s)
- Jennifer M Scotter
- Department of Pathology, Christchurch School of Medicine, University of Otago, Christchurch, New Zealand
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Mayr D, Margesin R, Klingsbichel E, Hartungen E, Jenewein D, Schinner F, Märk TD. Rapid detection of meat spoilage by measuring volatile organic compounds by using proton transfer reaction mass spectrometry. Appl Environ Microbiol 2003; 69:4697-705. [PMID: 12902260 PMCID: PMC169070 DOI: 10.1128/aem.69.8.4697-4705.2003] [Citation(s) in RCA: 122] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The evolution of the microbial spoilage population for air- and vacuum-packaged meat (beef and pork) stored at 4 degrees C was investigated over 11 days. We monitored the viable counts (mesophilic total aerobic bacteria, Pseudomonas spp., Enterobacteriaceae, lactic acid bacteria, and Enterococcus spp.) by the microbiological standard technique and by measuring the emission of volatile organic compounds (VOCs) with the recently developed proton transfer reaction mass spectrometry system. Storage time, packaging type, and meat type had statistically significant (P < 0.05) effects on the development of the bacterial numbers. The concentrations of many of the measured VOCs, e.g., sulfur compounds, largely increased over the storage time. We also observed a large difference in the emissions between vacuum- and air-packaged meat. We found statistically significant strong correlations (up to 99%) between some of the VOCs and the bacterial contamination. The concentrations of these VOCs increased linearly with the bacterial numbers. This study is a first step toward replacing the time-consuming plate counting by fast headspace air measurements, where the bacterial spoilage can be determined within minutes instead of days.
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Affiliation(s)
- D Mayr
- Institute of Ion Physics. Institute of Microbiology, University of Innsbruck. Osterreichische Agentur für Gesundheit und Ernährungssicherheit, Lebensmitteluntersuchung Innsbruck, 6020 Innsbruck, Austria.
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ODUMERU J, BOULTER J, KNIGHT K, LU X, McKELLAR R. ASSESSMENT OF A WASH TREATMENT WITH WARM CHLORINATED WATER TO EXTEND THE SHELF?LIFE OF READY?TO?USE LETTUCE. J FOOD QUALITY 2003. [DOI: 10.1111/j.1745-4557.2003.tb00238.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Abstract
AIMS To study the regulation of the de novo pyrimidine biosynthetic enzymes in the food-spoilage agent Pseudomonas fragi ATCC 4973. METHODS AND RESULTS The de novo pyrimidine biosynthetic enzymes were measured in extracts of Ps. fragi ATCC 4973 cells and of cells from auxotrophs deficient for dihydroorotase or OMP decarboxylase activity. Pyrimidine biosynthetic enzyme activities in ATCC 4973 were influenced by pyrimidine supplementation to the culture medium. The pyrimidine limitation of each auxotroph elevated the de novo enzyme activities, indicating that this pathway may be repressible by a pyrimidine-related compound. Aspartate transcarbamoylase activity in ATCC 4973 was inhibited in vitro by pyrophosphate and purine or pyrimidine nucleotides. CONCLUSIONS Pyrimidine synthesis in Ps. fragi appeared to be controlled at the transcriptional level and at the level of activity for aspartate transcarbamoylase. Its transcriptional regulation seemed to be more highly controlled than what was observed in the closely related species Pseudomonas putida and Pseudomonas fluorescens. SIGNIFICANCE AND IMPACT OF THE STUDY This study demonstrates that pyrimidine synthesis is regulated in Ps. fragi. This could prove useful to future studies examining its biological control and its taxonomic assignment.
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Affiliation(s)
- T P West
- Olson Biochemistry Laboratories, Department of Chemistry and Biochemistry, South Dakota State University, Brookings, SD 57007, USA.
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Insausti K, Beriain M, Gorraiz C, Purroy A. Volatile Compounds of Raw Beef from 5 Local Spanish Cattle Breeds Stored Under Modified Atmosphere. J Food Sci 2002. [DOI: 10.1111/j.1365-2621.2002.tb10325.x] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Schöller CEG, Gürtler H, Pedersen R, Molin S, Wilkins K. Volatile metabolites from actinomycetes. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2002; 50:2615-2621. [PMID: 11958631 DOI: 10.1021/jf0116754] [Citation(s) in RCA: 112] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Twenty-six Streptomyces spp. were screened for their volatile production capacity on yeast starch agar. The volatile organic compounds (VOCs) were concentrated on a porous polymer throughout an 8-day growth period. VOCs were analyzed by gas chromatography with flame ionization detection and identified or characterized by gas chromatography-mass spectrometry. A total of 120 VOCs were characterized by retention index and mass spectra. Fifty-three compounds were characterized as terpenoid compounds, among which 18 could be identified. Among the VOCs were alkanes, alkenes, alcohols, esters, ketones, sulfur compounds, and isoprenoid compounds. Among the most frequently produced compounds were isoprene, acetone, 1-butanol, 2-methyl-1-propanol, 3-methyl-3-buten-1-ol, 3-methyl-1-butanol, 2-methyl-1-butanol, cyclopentanone, dimethyl disulfide, dimethyl trisulfide, 2-phenylethanol, and geosmin. The relationship between the excretion of geosmin and the production of spores was examined for one isolate. A good correlation between headspace geosmin and the number of spores was observed, suggesting that VOCs could be used to indicate the activity of these microorganisms in heterogeneous substrates.
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Affiliation(s)
- Charlotte E G Schöller
- Department of Indoor Environment, National Institute of Occupational Health, Lersø Parkallé 105, DK-2100 Copenhagen Ø, Denmark
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Rubio C, Costa D, Bellon-Fontaine M, Relkin P, Pradier C, Marcus P. Characterization of bovine serum albumin adsorption on chromium and AISI 304 stainless steel, consequences for the Pseudomonas fragi K1 adhesion. Colloids Surf B Biointerfaces 2002. [DOI: 10.1016/s0927-7765(01)00242-9] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Ellis DI, Goodacre R. Rapid and quantitative detection of the microbial spoilage of muscle foods: current status and future trends. Trends Food Sci Technol 2001. [DOI: 10.1016/s0924-2244(02)00019-5] [Citation(s) in RCA: 117] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Lindinger W, Hansel A, Jordan A. On-line monitoring of volatile organic compounds at pptv levels by means of proton-transfer-reaction mass spectrometry (PTR-MS) medical applications, food control and environmental research. ACTA ACUST UNITED AC 1998. [DOI: 10.1016/s0168-1176(97)00281-4] [Citation(s) in RCA: 1286] [Impact Index Per Article: 49.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Lebert I, Begot C, Lebert A. Growth of Pseudomonas fluorescens and Pseudomonas fragi in a meat medium as affected by pH (5.8-7.0), water activity (0.97-1.00) and temperature (7-25 degrees C). Int J Food Microbiol 1998; 39:53-60. [PMID: 9562876 DOI: 10.1016/s0168-1605(97)00116-5] [Citation(s) in RCA: 48] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
A total of 59 strains of Pseudomonas, isolated from meat products, were grown in micro-titer plates in a meat medium over a range of pH (5.8-7.0), alpha w (0.97-1.00) and temperature (7-25 degrees C). Growths were performed in a meat broth with an automated turbidimeter (Bioscreen C, Labsystem, France). The growth curves obtained in this study did not have sigmoidal shapes making it impossible to calculate growth parameters using the Gompertz equation. The medium was weakly oxygenated in the micro-titer plates and reached 0%-dissolved oxygen at the beginning of the exponential phase. Strains were separated into two groups: P. fragi and P. fluorescens. Strains of P. fragi had shorter lag times than those of P. fluorescens. The impact of such results is interesting in that these could assist to explain the succession of flora that is observed during the processing of meat: P. fluorescens is the dominant bacteria among Pseudomonas spp. at the beginning of a slaughter line and P. fragi becomes dominant during the chilling process.
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Affiliation(s)
- I Lebert
- Meat Research Department, National Institute of Agronomic Research, Saint-Genès Champanelle, France.
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