Cooperation of lactic acid bacteria regulated by the AI-2/LuxS system involve in the biopreservation of refrigerated shrimp

Li, Jianpeng; Yang, Xiaocui; Shi, Guocui; Chang, Jing; Liu, Zunying; Zeng, Mingyong

doi:10.1016/j.foodres.2018.11.025

Cited by 41 publications

(27 citation statements)

References 35 publications

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“…In contrast to dairy plant environments, a study reported that bacteria, such as Psychrobacter, Rhodococcus, Leuconostoc, and Yersinia genera, had been detected in meat processing plant surfaces, with Yersinia spp. being the most abundant [45]. Unlike these results, we found Pseudomonas and Acinetobacter as the predominant genera across meat processing plants, P3 and P4.…”

Section: Discussioncontrasting

confidence: 99%

“…This fact was enough to generate a change at the phylum level, since P2 was the only plant where the Firmicutes presented a very high proportion. LAB is a group of microorganisms capable of growing at low temperatures, and some species are relatively tolerant to stress conditions [45], thus providing them with a high food spoilage ability [46,47]. Sample points where Lactobacillus genus predominated neither Pseudomonas spp.…”

Section: Discussionmentioning

confidence: 99%

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Metagenomic characterization of bacterial biofilm in four food processing plants in Colombia

et al. 2020

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Bacteria inside biofilms are more persistent and resistant to stress conditions found in the production environment of food processing plants, thus representing a constant risk for product safety and quality. Therefore, the aim of this study was to characterize, using 16S rRNA sequencing, the bacterial communities from biofilms found in four food processing plants (P1, P2, P3, and P4). In total, 50 samples from these four processing plants were taken after cleaning and disinfection processes. Four phyla: Proteobacteria, Firmicutes, Actinobacteria, and Bacteroides represented over 94% of the operational taxonomic units found across these four plants. A total of 102 families and 189 genera were identified. Two genera, Pseudomonas spp. and Acinetobacter spp., were the most frequently found (93.47%) across the four plants. In P1, Pseudomonas spp. and Lactobacillus spp. were the dominant genera, whereas Lactobacillus spp. and Streptococcus spp. were identified in P2. On the other hand, biofilms found in P3 and P4 mainly consisted of Pseudomonas spp. and Acinetobacter spp. Our results indicate that different bacterial genera of interest to the food industry due to their ability to form biofilm and affect food quality can coexist inside biofilms, and as such, persist in production environments, representing a constant risk for manufactured foods. In addition, the core microbiota identified across processing plants evaluated was probably influenced by type of food produced and cleaning and disinfection processes performed in each one of these.

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Section: Discussioncontrasting

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Metagenomic characterization of bacterial biofilm in four food processing plants in Colombia

et al. 2020

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“…The expression of mRNA was detected according to the methods of Li et al [48]. Total RNA was extracted as previously described [49].…”

Section: Methodsmentioning

confidence: 99%

Oyster-Derived Zinc-Binding Peptide Modified by Plastein Reaction via Zinc Chelation Promotes the Intestinal Absorption of Zinc

Chen

Wang

et al. 2019

Marine Drugs

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Zinc-binding peptides from oyster (Crassostrea gigas) have potential effects on zinc supplementation. The aim of this study was to prepare efficient zinc-binding peptides from oyster-modified hydrolysates by adding exogenous glutamate according to the plastein reaction and to further explore the zinc absorption mechanism of the peptide-zinc complex (MZ). The optimum conditions for the plastein reaction were as follows: pH 5.0, 40 °C, substrate concentration of 40%, pepsin dosage of 500 U/g, reaction time of 3 h and l-[1-13C]glutamate concentration of 10 mg/mL. The results of 13C isotope labelling suggested that the addition of l-[1-13C]glutamate contributed to the increase in the zinc-binding capacity of the peptide. The hydrophobic interaction was the main mechanism of action of the plastein reaction. Ultraviolet spectra and scanning electronic microscopy (SEM) revealed that the zinc-binding peptide could bind with zinc and form MZ. Furthermore, MZ could significantly enhance zinc bioavailability in the presence of phytic acid, compared to the commonly used ZnSO4. Additionally, MZ significantly promoted the intestinal absorption of zinc mainly through two pathways, the zinc ion channel and the small peptide transport pathway. Our work attempted to increase the understanding of the zinc absorption mechanism of MZ and to support the potential application of MZ as a supplementary medicine.

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“…Signaling associated with AI-2 in these bacteria is associated with adaptation to environmental conditions, affecting biofilm formation (Rickard et al, 2006; Lebeer et al, 2007; Cuadra-Saenz et al, 2012; Sun et al, 2014; Liu et al, 2017, 2018a) and resistance to stressors during the passage through the digestive tract (Yeo et al, 2015; Liu et al, 2018a). Additionally, the luxS system is required for the synthesis of bacteriocins by Escherichia coli (Lu et al, 2017), Streptococcus pneumoniae (Miller et al, 2018), Streptococcus mutans (Merritt et al, 2005; Sztajer et al, 2008), and Lactobacillus (Jia et al, 2017; Li et al, 2019). It was observed that AI-2 produced by Aggregatibacter actinomycetemcomitans is a factor directly involved in the inhibition of both biofilm formation and transformation into the filamentous form by Candida albicans (Bachtiar et al, 2014).…”

Section: The First Objection – the Selectivity Of Quorum Quenching Sumentioning

confidence: 99%

Challenges and Limitations of Anti-quorum Sensing Therapies

Krzyżek

2019

Front. Microbiol.

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Quorum sensing (QS) is a mechanism allowing microorganisms to sense population density and synchronously control genes expression. It has been shown that QS supervises the activity of many processes important for microbial pathogenicity, e.g., sporulation, biofilm formation, and secretion of enzymes or membrane vesicles. This contributed to the concept of anti-QS therapy [also called quorum quenching (QQ)] and the opportunity of its application in fighting against various types of pathogens. In recent years, many published articles reported promising results indicating the possibility of reducing pathogenicity of tested microorganisms and their easier eradication when co-treated with antibiotics. The aim of the present article is to point to the opposite, negative side of the QQ therapy, with particular emphasis on three fundamental properties attributed to anti-QS substances: the selectivity, virulence reduction, and lack of resistance against QQ. This point of view may highlight new directions of research, which should be taken into account in the future before the widespread introduction of QQ therapies in the treatment of people.

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Cooperation of lactic acid bacteria regulated by the AI-2/LuxS system involve in the biopreservation of refrigerated shrimp

Cited by 41 publications

References 35 publications

Metagenomic characterization of bacterial biofilm in four food processing plants in Colombia

Metagenomic characterization of bacterial biofilm in four food processing plants in Colombia

Oyster-Derived Zinc-Binding Peptide Modified by Plastein Reaction via Zinc Chelation Promotes the Intestinal Absorption of Zinc

Challenges and Limitations of Anti-quorum Sensing Therapies

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