Microbe-Microbe Interactions

Dolfing, Jan; Gottschal, Jan C.

doi:10.1007/978-1-4757-0322-1_10

Cited by 11 publications

(8 citation statements)

References 282 publications

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“…On the other hand, studies with fresh meat have shown that pseudomonads predominated over the other meat bacteria because of their faster growth rates, their greater affinity for oxygen, and, as a consequence, their greater catabolism of glucose and lactate (26,27). In general, the microbe-microbe interaction can also be influenced by factors such as oxygen and substrate limitation (14), and thus, microbial competition (21, 55) not only affects the development of microbial association in a fish ecosystem but could also influence the chemical changes which are essentially an expression of the development of such an ecosystem. Indeed, this can be seen in our findings.…”

Section: Discussionmentioning

confidence: 99%

Chemical and Sensory Changes Associated with Microbial Flora of Mediterranean Boque ( Boops boops ) Stored Aerobically at 0, 3, 7, and 10°C

Koutsoumanis

Nychas

1999

Appl Environ Microbiol

154

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The development of a microbial population and changes in the physicochemical and sensorial characteristics of Mediterranean boque (Boops boops), called gopa in Greece, stored aerobically at 0, 3, 7, and 10°C were studied. Pseudomonads andShewanella putrefaciens were the dominant bacteria at the end of the storage period, regardless of the temperature tested. Enterobacteria and Brochothrix thermosphacta also grew, but their population density was always 2 to 3 log10CFU g−1 less than that of pseudomonads. The concentration of potential indicators of spoilage, glucose and lactic acid, decreased while that of the α-amino groups increased during storage. The concentrations of these carbon sources also decreased on sterile fish blocks inoculated with strains isolated from fish microbial flora. The organic acid profile of sterile fish blocks inoculated with the above-mentioned bacteria and that of naturally spoiled fish differed significantly. An excellent correlation (r = −0.96) between log10 counts of S. putrefaciensor Pseudomonas bacteria with freshness was observed in this study.

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Section: Discussionmentioning

confidence: 99%

Chemical and Sensory Changes Associated with Microbial Flora of Mediterranean Boque ( Boops boops ) Stored Aerobically at 0, 3, 7, and 10°C

Koutsoumanis

Nychas

1999

Appl Environ Microbiol

154

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“…The anaerobic microbial communities of the gut are exceedingly complex, however, being characterized by high cell densities and strain diversity and a significant degree of interspecies cross-feeding and microbial interaction (9). Recent molecular studies have demonstrated that up to 75% of the 16S ribosomal DNA (rDNA) sequence diversity is apparently unrelated to known bacterial species (13,25).…”

mentioning

confidence: 99%

Acetate Utilization and Butyryl Coenzyme A (CoA):Acetate-CoA Transferase in Butyrate-Producing Bacteria from the Human Large Intestine

Duncan¹,

Barcenilla²,

Stewart³

et al. 2002

Appl Environ Microbiol

609

452

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Seven strains of Roseburia sp., Faecalibacterium prausnitzii, and Coprococcus sp. from the human gut that produce high levels of butyric acid in vitro were studied with respect to key butyrate pathway enzymes and fermentation patterns. Strains of Roseburia sp. and F. prausnitzii possessed butyryl coenzyme A (CoA):acetateCoA transferase and acetate kinase activities, but butyrate kinase activity was not detectable either in growing or in stationary-phase cultures. Although unable to use acetate as a sole source of energy, these strains showed net utilization of acetate during growth on glucose. In contrast, Coprococcus sp. strain L2-50 is a net producer of acetate and possessed detectable butyrate kinase, acetate kinase, and butyryl-CoA:acetate-CoA transferase activities. These results demonstrate that different functionally distinct groups of butyrate-producing bacteria are present in the human large intestine.

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“…In this case, the peaks in coliform density would be expected to correlate with those in biofloc concentrations, although this was only observed in the 8th week of the study period (Table 1), when a peak was recorded in both concentrations. However, coliforms were unaffected by the second peak in biofloc concentrations (Table 2), indicating that the population dynamics of these bacteria in this closed system is regulated by other factors, such as competition with other groups of microorganisms (Dolfing & Gottschal 1997).…”

Section: Resultsmentioning

confidence: 95%

Microbiological quality ofLitopenaeus vannameiculture using conventional and biofloc systems

et al. 2015

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Shrimp farming is a fast-expanding activity that has supported the growth in the supply of these crustaceans to consumers around the world. However, the end product is vulnerable to contamination at all stages of the process, including the rearing tanks, where current practices prioritize to raise stocking densities and the minimization of water renewal. It is thus important to evaluate the potential of these systems for the proliferation of undesirable microorganisms, which may render the product unfit for human consumption. In the present study, the presence of coagulase-positive Staphylococcus, Salmonella spp., Vibrio spp., and total and thermotolerant coliforms was verified in biofloc tank and conventional pond systems used for the rearing of Litopenaeus vannamei in Pernambuco, Brazil, and the results were compared with the legislation regulating the marketing of fresh shrimp. Samples were collected from two biofloc tanks with a density of 375 shrimp m À2 , and two conventional ponds with 12 shrimp m À2 . None of the samples tested positive for either Salmonella spp. or coagulase-positive Staphylococcus, which is consistent with the legislation. While no standards are defined legally for Vibrio spp. or coliforms, very low concentrations were recorded in both systems, in comparison with other studies. While some variation in bacterial contamination was observed over the rearing process, the end product of both systems was fit for human consumption. The results of the study indicate that, while the water is not renewed in the biofloc system, the development of undesirable microorganisms can be controlled, with no adverse effects for the end product.

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Microbe-Microbe Interactions

Cited by 11 publications

References 282 publications

Chemical and Sensory Changes Associated with Microbial Flora of Mediterranean Boque ( Boops boops ) Stored Aerobically at 0, 3, 7, and 10°C

Chemical and Sensory Changes Associated with Microbial Flora of Mediterranean Boque ( Boops boops ) Stored Aerobically at 0, 3, 7, and 10°C

Acetate Utilization and Butyryl Coenzyme A (CoA):Acetate-CoA Transferase in Butyrate-Producing Bacteria from the Human Large Intestine

Microbiological quality ofLitopenaeus vannameiculture using conventional and biofloc systems

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