Factors affecting polyhydroxyalkanoates biodegradation in soil

Fernandes, Miguel; Salvador, A. F.; Alves, M. M.; Vicente, A. A.

doi:10.1016/j.polymdegradstab.2020.109408

Cited by 58 publications

(29 citation statements)

References 106 publications

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“…As for isobutyric acid, its production was negligible in all the continuous-flow experiments. Taken as a whole, these results clearly indicate that several factors (including material origin, composition, purity, and morphology) can affect PHA conversion into organic acids and, in turn, their potential degradation in subsurface environments [38].…”

Section: Column Fermentability Testsmentioning

confidence: 74%

Assessment of Long-Term Fermentability of PHA-Based Materials from Pure and Mixed Microbial Cultures for Potential Environmental Applications

Amanat

Matturro

Rossi

et al. 2021

Water

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The use of polyhydroxyalkanoates (PHA) as slow-release electron donors for environmental remediation represents a novel and appealing application that is attracting considerable attention in the scientific community. In this context, here, the fermentation pattern of different types of PHA-based materials has been investigated in batch and continuous-flow experiments. Along with commercially available materials, produced from axenic microbial cultures, PHA produced at pilot scale by mixed microbial cultures (MMC) using waste feedstock have been also tested. As a main finding, a rapid onset of volatile fatty acids (VFA) production was observed with a low-purity MMC-deriving material, consisting of microbial cells containing 56% (on weight basis) of intracellular PHA. Indeed, with this material a sustained, long-term production of organic acids (i.e., acetic, propionic, and butyric acids) was observed. In addition, the obtained yield of conversion into acids (up to 70% gVFA/gPHA) was higher than that obtained with the other tested materials, made of extracted and purified PHA. These results clearly suggest the possibility to directly use the PHA-rich cells deriving from the MMC production process, with no need of extraction and purification procedures, as a sustainable and effective carbon source bringing remarkable advantages from an economic and environmental point of view.

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Section: Column Fermentability Testsmentioning

confidence: 74%

Assessment of Long-Term Fermentability of PHA-Based Materials from Pure and Mixed Microbial Cultures for Potential Environmental Applications

Amanat

Matturro

Rossi

et al. 2021

Water

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“…As its name indicates, biodegradable polymers can be decomposed by microorganisms. Common biodegradable polymers studied as food packaging materials include but are not limited to polylactic acid (PLA) (Swaroop and Shukla 2018 , 2019 ; Mohamad et al 2020 ), polybutylene adipate terephthalate (PBAT) (Pattanayaiying et al 2019 ), polysaccharides (such as starch (Osorio et al 2019 ; Menzel 2020 ; Saraiva Rodrigues et al 2020 ), cellulose (Balasubramaniam et al 2020 ; Riaz et al 2020 ), pectin (Nešić et al 2018 ), chitosan (Haghighi et al 2020 ; Priyadarshi and Rhim 2020 )), polyhydroxyalkanoates (PHAs) such as polyhydroxybutyrate (PHB) (Adeleye et al 2020 ; Fernandes et al 2020 ; Shahid et al 2020 ), polycaprolactone (PCL) (Khalid et al 2018 ; Mugwagwa and Chimphango 2020 ), and cellulose acetate (Xie and Hung 2018 ; Rajeswari et al 2020 ).…”

Section: Emerging Studies On Environment and Food Safetymentioning

confidence: 99%

Environment and food safety: a novel integrative review

Jiang

Wang

et al. 2021

Environ Sci Pollut Res

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Environment protection and food safety are two critical issues in the world. In this review, a novel approach which integrates statistical study and subjective discussion was adopted to review recent advances on environment and food safety. Firstly, a scientometric-based statistical study was conducted based on 4904 publications collected from the Web of Science Core Collection database. It was found that the research on environment and food safety was growing steadily from 2001 to 2020. Interestingly, the statistical analysis of most-cited papers, titles, abstracts, keywords, and research areas revealed that the research on environment and food safety was diverse and multidisciplinary. In addition to the scientometric study, strategies to protect environment and ensure food safety were critically discussed, followed by a discussion on the emerging research topics, including emerging contaminates (e.g., microplastics), rapid detection of contaminants (e.g., biosensors), and environment friendly food packaging materials (e.g., biodegradable polymers). Finally, current challenges and future research directions were proposed. Supplementary Information The online version contains supplementary material available at 10.1007/s11356-021-16069-6.

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“…The use of synthetic products is an acute problem due to their ecotoxicity and low biodegradability. Therefore, the successful development of modern technologies involves the introduction of new eco-friendly substances, which include biosurfactants and biopolymers of microbial origin (Fernandes et al, 2020;Johnson et al, 2020). Actinobacteria of the genus Rhodococcus have practical potential, due to their ability to synthesize biosurfactants and biopolymersexopolysaccharides (EPS) and cellular polyhydroxyalkanoates (PHA).…”

Section: Introductionmentioning

confidence: 99%

BIOSYNTHESIS AND CHARACTERISTICS OF METABOLITES OF Rhodococcus erythropolis AU-1 STRAIN

Semeniuk¹,

Koretska

Кочубей³

et al. 2022

J microb biotech food sci

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Practically important metabolites of Rhodococcus erythropolis Au-1 strain were obtained: trehalose lipids, exopolysaccharide and cellular polymer – polyhydroxyalkanoate. The structures of the products were established by the methods of TLC, IR and UV-Vis spectroscopy. The purification of trehalose lipids from crude extract was carried out using silica gel column chromatography, one of the trehalose lipids fractions was identified as a trehalose dimycolate. The presence of (NН) group was detected in the exopolysaccharide. For the first time, a biodegradable polymer was isolated from bacteria cells of the strain R. erythropolis Au-1, іt was identified as the polyhydroxyalkanoate. The physico-chemical properties of the metabolites of the strain R. erythropolis Au-1 were established: the surface tension of trehalose lipids fractions was 30,5-43,2 mN/m; the emulsification activity of the exopolysaccharide solutions (1-10 g/L) with vaseline oil was 42-58%. The differential thermal analysis was used to define starting temperatures of degradation of trehalose dimycolate (130 °C), exopolysaccharide (180 °C) and polyhydroxyalkanoate (164 °C, melting point 42oC). The obtained results expand the possibilities of practical application of trehalose lipids, exopolysaccharide and polyhydroxyalkanoate of the strain R. erythropolis Au-1.

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Factors affecting polyhydroxyalkanoates biodegradation in soil

Cited by 58 publications

References 106 publications

Assessment of Long-Term Fermentability of PHA-Based Materials from Pure and Mixed Microbial Cultures for Potential Environmental Applications

Assessment of Long-Term Fermentability of PHA-Based Materials from Pure and Mixed Microbial Cultures for Potential Environmental Applications

Environment and food safety: a novel integrative review

BIOSYNTHESIS AND CHARACTERISTICS OF METABOLITES OF Rhodococcus erythropolis AU-1 STRAIN

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