Main Groups of Microorganisms of Relevance for Food Safety and Stability

Lorenzo, José M.; Munekata, Paulo E.S.; Domínguez, Raimundo Outerelo; Pateiro, Mirian; Saraiva, Jorge A.; Franco, Daniel

doi:10.1016/b978-0-12-811031-7.00003-0

Cited by 153 publications

(123 citation statements)

References 211 publications

(204 reference statements)

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“…Therefore, the presence in the LM of WHWTs of these 2 genera could activate the immune system, alter the airway epithelium and induce or perpetuate the airway inflammation in CIPF. Little is known about the metabolism and the potential pathogenic role of bacteria of the Brochothrix, Pseudarcicella, Rhodoluna and Limnohabitans genera [28,30,31,[36][37][38]. Data of the present study showed that both healthy and CIPF WHWTs had a distinct microbiota compared with other healthy domestic dogs.…”

Section: The Lm In Cipf Whwtsmentioning

confidence: 51%

Assessment of the lung microbiota in dogs: influence of the type of breed, living conditions and canine idiopathic pulmonary fibrosis

et al. 2020

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Background: Literature about the lung microbiota (LM) in dogs is sparse. Influence of breed and living conditions on the LM in healthy dogs is currently unknown, as well as the influence of chronic respiratory diseases such as canine idiopathic pulmonary fibrosis (CIPF) in West highland white terriers (WHWTs). Aims of this study were (1) to assess the characteristics of the healthy LM according to breed and living conditions, and (2) to study LM changes associated with CIPF in WHWTs. Forty-five healthy dogs divided into 5 groups: domestic terriers (n = 10), domestic shepherds (n = 11), domestic brachycephalic dogs (n = 9), domestic WHWTs (n = 6) (H-WHWTs) and experimental beagles (n = 9) and 11 diseased WHWTs affected with CIPF (D-WHWTs) were included in the study to achieve those objectives.Results: In healthy domestic dogs, except in H-WHWTs, the presence of few discriminant genera in each type of breed was the only LM modification. LM of experimental dogs displayed a change in b-diversity and an increased richness compared with domestic dogs. Moreover, Prevotella_7 and Dubosiella genera were more abundant and 19 genera were discriminant in experimental dogs. LM of both H-WHWTs and D-WHWTs revealed increased abundance of 6 genera (Brochothrix, Curvibacter, Pseudarcicella, Flavobacteriaceae genus, Rhodoluna and Limnohabitans) compared with other healthy domestic dogs. Brochothrix and Pseudarcicella were also discriminant in D-WHWTs compared with H-WHWTs and other healthy domestic dogs.Conclusions: In domestic conditions, except for H-WHWT, the breed appears to have minor influence on the LM. LM modifications were found in experimental compared with domestic living conditions. LM modifications in H-WHWTs and D-WHWTs compared with other healthy domestic dogs were similar and seemed to be linked to the breed. Whether this breed difference might be related with the high susceptibility of WHWTs for CIPF requires further studies.

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Section: The Lm In Cipf Whwtsmentioning

confidence: 51%

Assessment of the lung microbiota in dogs: influence of the type of breed, living conditions and canine idiopathic pulmonary fibrosis

et al. 2020

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“…Eleven species of Staphylococcus can be isolated from humans as commensals, some of them pathogenic in persons debilitated by chronic illness, traumatic injury, burns or immunosuppression [109] ; Laceyella is considered to be an environment thermophilic bacteria [110]. From Lactobacillales, Desemzia is a lactic acid bacteria (as the rest of the order) common in sh gut considered to be sometimes abundant in the intestine, notably in freshwater sh [111]; Alloiococcus has only one known species with implications as a secondary pathogen in human otitis [112]. The rest of Lactobacillales of this cluster 2 are ubiquitous bacteria, usually found in decomposing plants, milk products and foods in fermentation (including sh) contributing to the healthy microbiota of animals and humans [113].…”

Section: Resultsmentioning

confidence: 99%

Metagenomics Analysis Reveals An Extraordinary Bacterial Diversity in Anisakids (Nematoda: Anisakidae) L3 Larvae

Arcos

Lira

Robertson

et al. 2020

Preprint

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Background: L3 larvae of anisakid nematodes are an important problem for the fisheries industry and pose a potential risk for human health by acting as agents causing allergies and as potential vectors of pathogens microrganisms. In spite of the close bacteria-nematode relationship very little is known of the Anisakids microbiote. Fresh fish could be contaminated by bacteria vectored in the cuticle or in the intestine of Anisakids when the L3 larvae migrate through the muscles. As a consequence the bacterial inoculum will be spread, affecting the quality of the fish, and possible clinical effects cannot be discardedResults: A total of 2,689,113 16S rRNA gene sequences from a total of 113 L3 individuals obtained from fish captured along the FAO 27 area were studied. Bacteria were taxonomically characterized through 1803 representative OTUsequences. Fourteen Phyla, 31 Classes, 52 Orders, 129 Families and 187 genera were unambiguously identified. We have found as part of microbiome an average of 123 OTUs per L3 individual. Diversity Indices (Shannon and Simpson indices) indicate an extraordinary diversity of bacteria at a OTU level. There are clusters of Anisakids individuals (samples) defined by the associated bacteria which however are not significantly related with fish hosts or anisakid taxa. This suggests that association or relationship among bacteria in Anisakids, exists without the influence of fishes or nematodes. The lack of relationships with hosts of Anisakids taxa has to be necessarily expresssed by the association among bacterial OTUs or other taxonomical levels which are ranging from OTUs to phylum level. Conclusions: There are significant biological structural associations of microbiota in anisakid nematodes which manifest in clusters of bacteria ranging from plyllum to genus level which could also be anindicator of degree of fish contamination or from the geographic zone of fish capture. Actinobacteria, Aquificae, Firmicutes, and Proteobacteria are the phyla whose abundance value discriminate for difining such structures.

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“…(Lorenzo et al., 2018) while the most common toxigenic and spoilage fungal genera of refrigerated and processed foods are Aspergillus, Alternaria, Fusarium , Mucor, Penicillium , etc. Besides, some nonfilamentous yeast species are also known to spoil food and feedstocks, few examples are Candida sp, Debaryomyces hansenii , and Dekkera/Brettanomyces, and Zygosaccharomyces (Lorenzo et al., 2018; Odeyemi et al., 2020). Consumption of foods contaminated with bacterial and mycotoxins leads to numerous toxicosis incidents and deaths (Bräse, 2013; Kim, 2005).…”

Section: Introductionmentioning

confidence: 99%

Broad‐spectrum antimicrobial efficacy of Pediococcus acidilactici LAB001 against food spoilage and toxigenic bacteria and fungi

Das

Mandal

2020

J Food Process Preserv

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The present study aims to explore the dual broad‐spectrum antibacterial and antifungal potentials of Pediococcus acidilactici LAB001 (GenBank Ac. No.: FJ457014) against some food spoilage bacteria and fungi. The strain produced the highest amount of bacteriocin in a low‐cost TGE + Tween 80 + Buffer medium within 24 hr fermentation at 30°C. The bacteriocin causes lethality to spoilage bacteria with the loss of essential solute like K+. The sublethal injury by EDTA‐bacteriocin (20 mM EDTA with 2,000 AU/ml) treatment for 1 hr caused resistant Pseudomonas aeruginosa and Salmonella typhimurium MTCC98 strains to bacteriocin sensitive strains. The strain also had broad‐spectrum inhibitory efficacy against the food spoilage and toxigenic fungal pathogens of fresh and processed foods. Therefore, selective characterization and mass‐scale production of these antimicrobial compounds could substitute conventional synthetic food preservatives in many fresh and fermented food products to extend their shelf life. Practical applications The use of lactic acid bacteria for food fermentation and preservation has a long‐standing scientific validation. However, their uses greatly rely on the degree of fermenting and preservation aptitudes of the strains. This needs to search and explore new strains of LAB for these beneficial attributes. Pediococcus spp. are such an important group of LAB species that have multifaceted uses in food and feed fermentation and industrial exploitation. The present study reports on the dual broad‐spectrum efficacy of P. acidilactici LAB001 (GenBank Ac. No.: FJ457014) against the food spoilage and toxigenic bacterial and fungal strains through bacteriocin and antifungal compound production. The large‐scale production and application of the antimicrobial compounds from this strain can be used in food and feed preservation.

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Main Groups of Microorganisms of Relevance for Food Safety and Stability

Cited by 153 publications

References 211 publications

Assessment of the lung microbiota in dogs: influence of the type of breed, living conditions and canine idiopathic pulmonary fibrosis

Assessment of the lung microbiota in dogs: influence of the type of breed, living conditions and canine idiopathic pulmonary fibrosis

Metagenomics Analysis Reveals An Extraordinary Bacterial Diversity in Anisakids (Nematoda: Anisakidae) L3 Larvae

Broad‐spectrum antimicrobial efficacy of Pediococcus acidilactici LAB001 against food spoilage and toxigenic bacteria and fungi

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