Carotenoids from heterotrophic bacteria isolated from Fildes Peninsula, King George Island, Antarctica

Vila, Eugenia; Hornero‐Méndez, Dámaso; Azziz, Gastón; Lareo, Claudia; Saravia, Verónica

doi:10.1016/j.btre.2019.e00306

Cited by 72 publications

(47 citation statements)

References 37 publications

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“…Although humans must obtain carotenoids from the diet, some microbes in the environment have been shown to synthesize carotenoids for protection against oxidative damage (Saejung & Ampornpat, 2019; Vila, Hornero‐Méndez, Azziz, Lareo, & Saravia, 2019). Therefore, it is plausible to consider that some of the biological effects that carotenoids have in humans may be related to the activities of the gut microbiota, but this has neither been adequately studied nor demonstrated within the literature (Lyu, Wu, Wang, Shen, & Lin, 2018).…”

Section: Introductionmentioning

confidence: 99%

Dietary and plasma carotenoids are positively associated with alpha diversity in the fecal microbiota of pregnant women

Schmidt

Haddad

Sugino

et al. 2021

Journal of Food Science

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Because microbes use carotenoids as an antioxidant for protection, dietary carotenoids could be associated with gut microbiota composition. We aimed to determine associations among reported carotenoid intake, plasma carotenoid concentrations, and fecal bacterial communities in pregnant women. Pregnant women (n = 27) were enrolled in a two‐arm study designed to assess feasibility of biospecimen collection and delivery of a practical nutrition intervention. Plasma and fecal samples were collected and women were surveyed with a 24‐hr dietary checklist and recalls. Plasma carotenoids were analyzed by HPLC using photodiode array detection. Fecal bacteria were analyzed by 16S rRNA DNA sequencing. Results presented are cross‐sectional from the 36‐week gestational study visit combined across both study arms due to lack of significant differences between intervention and usual care groups (n = 23 women with complete data). Recent intake of carotenoid‐containing foods included carrots, sweet potatoes, mangos, apricots, and/or bell peppers for 48% of women; oranges/orange juice (17%); egg (39%); tomato/tomato‐based sauces (52%); fruits (83%); and vegetables (65%). Average plasma carotenoid concentrations were 6.4 µg/dL α‐carotene (AC), 17.7 µg/dL β‐carotene (BC), 11.4 µg/dL cryptoxanthin, 39.0 µg/dL trans‐lycopene, and 29.8 µg/dL zeaxanthin and lutein. AC and BC concentrations were higher in women who recently consumed foods high in carotenoids. CR concentrations were higher in women who consumed oranges/orange juice. Microbiota α‐diversity positively correlated with AC and BC. Microbiota β‐diversity differed significantly across reported intake of carotenoid containing foods and plasma concentrations of AC. This may reflect an effect of high fiber or improved overall dietary quality, rather than a specific effect of carotenoids.Practical ApplicationLittle is known about the association between the gut microbiome and specific dietary microconstituents, such as carotenoids, especially during pregnancy. This research demonstrates that a carotenoid‐rich diet during pregnancy supports a diverse microbiota, which could be one mechanism by which carotenoids promote health.

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Section: Introductionmentioning

confidence: 99%

Dietary and plasma carotenoids are positively associated with alpha diversity in the fecal microbiota of pregnant women

Schmidt

Haddad

Sugino

et al. 2021

Journal of Food Science

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“…TDMA-8 (1.1 mg/gdb), and two strains of Sphingomonas genus—TDMA-16 (1.7 mg/gdb) and TDMA-17 (2.8 mg/gdb). On the other hand, Vila et al [ 45 ] examined strains isolated from King George Island for carotenoid production. In this study, the production of carotenoids oscillated around 0.5 mg/gdb for Planococcus sp.…”

Section: Resultsmentioning

confidence: 99%

Genome-Based Insights into the Production of Carotenoids by Antarctic Bacteria, Planococcus sp. ANT_H30 and Rhodococcus sp. ANT_H53B

et al. 2020

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Antarctic regions are characterized by low temperatures and strong UV radiation. This harsh environment is inhabited by psychrophilic and psychrotolerant organisms, which have developed several adaptive features. In this study, we analyzed two Antarctic bacterial strains, Planococcus sp. ANT_H30 and Rhodococcus sp. ANT_H53B. The physiological analysis of these strains revealed their potential to produce various biotechnologically valuable secondary metabolites, including surfactants, siderophores, and orange pigments. The genomic characterization of ANT_H30 and ANT_H53B allowed the identification of genes responsible for the production of carotenoids and the in silico reconstruction of the pigment biosynthesis pathways. The complex manual annotation of the bacterial genomes revealed the metabolic potential to degrade a wide variety of compounds, including xenobiotics and waste materials. Carotenoids produced by these bacteria were analyzed chromatographically, and we proved their activity as scavengers of free radicals. The quantity of crude carotenoid extracts produced at two temperatures using various media was also determined. This was a step toward the optimization of carotenoid production by Antarctic bacteria on a larger scale.

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“…From this multiple alignment result, the final phylogenetic tree was constructed using the bootstrap method by the neighbor-joining algorithm in MEGA7 software. For the construction of the phylogenetic tree, an out-group was considered as Staphylococcus aureus df5 (LN929744) [ [47] , [48] , [49] ].…”

Section: Methodsmentioning

confidence: 99%

Production, purification, and process optimization of intracellular pigment from novel psychrotolerant Paenibacillus sp. BPW19

Padhan

Poddar

Sarkar

et al. 2021

Biotechnology Reports

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Carotenoids from heterotrophic bacteria isolated from Fildes Peninsula, King George Island, Antarctica

Cited by 72 publications

References 37 publications

Dietary and plasma carotenoids are positively associated with alpha diversity in the fecal microbiota of pregnant women

Dietary and plasma carotenoids are positively associated with alpha diversity in the fecal microbiota of pregnant women

Genome-Based Insights into the Production of Carotenoids by Antarctic Bacteria, Planococcus sp. ANT_H30 and Rhodococcus sp. ANT_H53B

Production, purification, and process optimization of intracellular pigment from novel psychrotolerant Paenibacillus sp. BPW19

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