Sustainable use of agro-industrial wastes as potential feedstocks for exopolysaccharide production by selected Halomonas strains

Joulak, Ichrak; Concórdio‐Reis, Patrícia; Torres, Cristiana A.V.; Sevrin, Chantal; Grandfils, Christian; Attia, Hamadi; Freitas, Filomena; Reis, Maria A. M.; Azabou, Samia

doi:10.1007/s11356-021-17207-w

Cited by 15 publications

(5 citation statements)

References 56 publications

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“…Similarly, bacteria can also be utilised to produce exopolysaccharides (EPS), a major component of biofilms from wastes. Halomonas strains were used to produce EPS rich in galactose from cheese whey wastes [ 156 ]. EPS production was evaluated by inoculation of lactic acid bacteria (LAB) Leuconostoc mesenteroides WiKim32 in spent media wastewater (SMW) derived from kimchi fermentation and exhibited antioxidant activity [ 157 ].…”

Section: Discussionmentioning

confidence: 99%

An Insight into Microbial Inoculants for Bioconversion of Waste Biomass into Sustainable “Bio-Organic” Fertilizers: A Bibliometric Analysis and Systematic Literature Review

Kiruba

Saeid

2022

IJMS

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The plant-microbe holobiont has garnered considerable attention in recent years, highlighting its importance as an ecological unit. Similarly, manipulation of the microbial entities involved in the rhizospheric microbiome for sustainable agriculture has also been in the limelight, generating several commercial bioformulations to enhance crop yield and pest resistance. These bioformulations were termed biofertilizers, with the consistent existence and evolution of different types. However, an emerging area of interest has recently focused on the application of these microorganisms for waste valorization and the production of “bio-organic” fertilizers as a result. In this study, we performed a bibliometric analysis and systematic review of the literature retrieved from Scopus and Web of Science to determine the type of microbial inoculants used for the bioconversion of waste into “bio-organic” fertilizers. The Bacillus, Acidothiobacillus species, cyanobacterial biomass species, Aspergillus sp. and Trichoderma sp. were identified to be consistently used for the recovery of nutrients and bioconversion of wastes used for the promotion of plant growth. Cyanobacterial strains were used predominantly for wastewater treatment, while Bacillus, Acidothiobacillus, and Aspergillus were used on a wide variety of wastes such as sawdust, agricultural waste, poultry bone meal, crustacean shell waste, food waste, and wastewater treatment plant (WWTP) sewage sludge ash. Several bioconversion strategies were observed such as submerged fermentation, solid-state fermentation, aerobic composting, granulation with microbiological activation, and biodegradation. Diverse groups of microorganisms (bacteria and fungi) with different enzymatic functionalities such as chitinolysis, lignocellulolytic, and proteolysis, in addition to their plant growth promoting properties being explored as a consortium for application as an inoculum waste bioconversion to fertilizers. Combining the efficiency of such functional and compatible microbial species for efficient bioconversion as well as higher plant growth and crop yield is an enticing opportunity for “bio-organic” fertilizer research.

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Section: Discussionmentioning

confidence: 99%

An Insight into Microbial Inoculants for Bioconversion of Waste Biomass into Sustainable “Bio-Organic” Fertilizers: A Bibliometric Analysis and Systematic Literature Review

Kiruba

Saeid

2022

IJMS

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“…In terms of S. monoica, the predicted pathways were the upregulation of L-rhamnose degradation, glucose degradation, and nitrate reduction, which could be due to the abundance of halotolerant strains such as Halomonas elongata. Previous studies reported that Halomonas strains contain high quantities of glucose, mannose, and rhamnose and express nitrate reductases (Maheshwari and Saraf, 2016;Joulak et al, 2021). Moreover, several lipid biosynthesis pathways were upregulated such as archaetidylinositol and CDP-archaeol biosynthesis pathways.…”

Section: Discussionmentioning

confidence: 97%

The Microbiome of Suaeda monoica and Dipterygium glaucum From Southern Corniche (Saudi Arabia) Reveals Different Recruitment Patterns of Bacteria and Archaea

Jalal

Sheikh²,

Alotaibi³

et al. 2022

Front. Mar. Sci.

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Soil and plant interact differently in response to the same stress (e.g., salinity) and recruit certain bacteria. The southern corniche (Saudi Arabia) has limited plant growth, which could be due to the high temperature and salinity. The study aimed to determine the soil microbiome of selected plants and the interactions between soil and these plants. Suaeda monoica and Dipterygium glaucum soil samples were collected from the crust (surface) and rhizosphere, while soil with no plant growth from the nearby area was used as control. High-throughput hypervariable V3–V4 region of the 16S rRNA gene was used to evaluate the shifts in soil microbiome due to growth of plant growth. The analysis detected up to 16% archaeal strains in S. monoica-associated samples, while D. glaucum and control samples contained 100% bacterial strains. The top 10 phyla composition of the soil samples were Proteobacteria, Actinobacteria, Firmicutes, Gemmatimonadota, Bacteroidota, Halobacterota, Cyanobacteria, Cloroflexi, Planctomycetota, and Myxococcota. The V3–V4 region analysis successfully clustered the 5 samples into 3 clusters (control, D. glaucum, and S. monoica) at higher-order classification but not at the species level due to unidentified bacteria. The main differences between soil samples were due to halophyte S. monoica samples containing high amounts of halophilic archaea and halophilic bacteria. This showed that selected plants interacted differently with the soil. EC- and KO-based analyses of functional genes and pathways showed that 5 pathways were specific to control, 11 pathways were observed only in D. glaucum samples, 12 pathways were expressed in S. monoica samples only, and 9 pathways were common in all samples. The study also detected numerous relatively novel genera in high abundance such as Aliifodinibius, Pontibacter, and Lacunisphaera. This showed that the soil in the sampling area is not well explored and that novel species could be isolated from the soil samples and used for future research.

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“…Extremophiles have been recently discovered to be capable of utilising renewable feedstocks into high value products (Joulak et al, 2022 ). The study of halophiles has attracted scientific interest due to their ability to survive in extreme environments and their potential applications in the production of biomolecules.…”

Section: Resultsmentioning

confidence: 99%

Halomonas alkaliantarctica as a platform for poly(3‐hydroxybutyrate‐co‐3‐hydroxyvalerate) production from biodiesel‐derived glycerol

Możejko‐Ciesielska,

Moraczewski,

Czaplicki

2023

Environ Microbiol Rep

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Polyhydroxyalkanoates (PHAs) are biodegradable polyesters produced by a wide range of microorganisms, including extremophiles. These unique microorganisms have gained interest in PHA production due to their ability to utilise low‐cost carbon sources under extreme conditions. In this study, Halomonas alkaliantarctica was examined with regards to its potential to produce PHAs using crude glycerol from biodiesel industry as the only carbon source. We found that cell dry mass concentration was not dependent on the applying substrate concentration. Furthermore, our data confirmed that the analysed halophile was capable of metabolising crude glycerol into poly(3‐hydroxybutyrate‐co‐3‐hydroxyvalerate) copolymer within 24 h of the cultivation without addition of any precursors. Moreover, crude glycerol concentration affects the repeat units content in the purified PHAs copolymers and their thermal properties. Nevertheless, a differential scanning calorimetric and thermogravimetric analysis showed that the analysed biopolyesters have properties suitable for various applications. Overall, this study described a promising approach for the valorisation of crude glycerol as a future strategy of industrial waste management to produce high value microbial biopolymers.

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Sustainable use of agro-industrial wastes as potential feedstocks for exopolysaccharide production by selected Halomonas strains

Cited by 15 publications

References 56 publications

An Insight into Microbial Inoculants for Bioconversion of Waste Biomass into Sustainable “Bio-Organic” Fertilizers: A Bibliometric Analysis and Systematic Literature Review

An Insight into Microbial Inoculants for Bioconversion of Waste Biomass into Sustainable “Bio-Organic” Fertilizers: A Bibliometric Analysis and Systematic Literature Review

The Microbiome of Suaeda monoica and Dipterygium glaucum From Southern Corniche (Saudi Arabia) Reveals Different Recruitment Patterns of Bacteria and Archaea

Halomonas alkaliantarctica as a platform for poly(3‐hydroxybutyrate‐co‐3‐hydroxyvalerate) production from biodiesel‐derived glycerol

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