Tailoring the Microbial Community for Improving the Biodegradation of Chitosan Films in Composting Environment

Altun, Emine; Çelik, Eda; Ersan, Hülya Yavuz

doi:10.1007/s10924-020-01711-0

Cited by 10 publications

(5 citation statements)

References 46 publications

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“…It is crucial to recognize the diversity of microorganisms present in compost ecosystems to know which taxonomic class produces the most adequate degradation enzymes to each biopolymer, making the composting more effective. This was the aim that supported the research paper “Tailoring the microbial community for improving the biodegradation of chitosan films in composting environment” by Altun et al [ 61 ]. The work was divided into two parts.…”

Section: Current Biodegradation Assays Methodologiesmentioning

confidence: 62%

“…Composting is an aerobic method of solid waste management, wherein the presence of microorganisms, under controlled conditions, biodegradable materials are biologically decomposed into humus, which is a good nutrition source for strengthening soil productivity and agricultural yield. This process may be incredibly helpful in the disposal problem and to diminish greenhouse gases emissions since the compost is a beneficial organic amendment and substrate that can be reintroduced into the economic system [ 17 , 61 , 62 , 63 ].…”

Section: Current Biodegradation Assays Methodologiesmentioning

confidence: 99%

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Methodologies to Assess the Biodegradability of Bio-Based Polymers—Current Knowledge and Existing Gaps

et al. 2022

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Our society lives in a time of transition where traditional petroleum-based polymers/plastics are being replaced by more sustainable alternative materials. To consider these bioproducts as more viable options than the actual ones, it is demanded to ensure that they are fully biodegradable or compostable and that there is no release of hazardous compounds to the environment with their degradation. It is then essential to adapt the legislation to support novel specific guidelines to test the biodegradability of each biopolymer in varied environments, and consequently, establish consistent data to design a coherent labeling system. This review work aims to point out the current standards that can serve as a basis for the characterization of biopolymers’ biodegradation profile in different environments (soil, compost, and aquatic systems) and identify other laboratory methodologies that have been adopted for the same purpose. With the information gathered in this work, it was possible to identify remaining gaps in existing national and international standards to help establish new validation criteria to be introduced in future research and policies related to bioplastics to boost the sustainable progress of this rising industry.

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Section: Current Biodegradation Assays Methodologiesmentioning

confidence: 62%

Section: Current Biodegradation Assays Methodologiesmentioning

confidence: 99%

Methodologies to Assess the Biodegradability of Bio-Based Polymers—Current Knowledge and Existing Gaps

et al. 2022

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“…One literature study on a composite film of chitosan–PCL–grapefruit seed extract reported a dry weight loss of 27% over 16 weeks . Moreover, Altun et al reported the CO 2 emission data for chitosan degradation in reactors inoculated with microorganisms, concluding that microorganisms capable of producing chitosanase enzymes improved the efficiency of the degradation process . Overall, these results indicate that the material is promising in terms of compliance with degradation legislation, although further tests are required to confirm this property.…”

Section: Resultsmentioning

confidence: 90%

Vanillin Cross-Linked Chitosan Film with Controlled Release of Green Tea Polyphenols for Active Food Packaging

Westlake,

Laabei,

Jiang

et al. 2023

ACS Food Sci. Technol.

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We report a novel cross-linked chitosan composite film containing vanillin, glycerol, and green tea extract. The effects of vanillin-mediated cross-linking and the incorporation of antimicrobial green tea polyphenols were investigated. The cross-linking effect, confirmed by Fourier transform infrared (FTIR) analysis, increased the tensile strength of the biopolymer film to 20.9 ± 3 MPa. The release kinetics of polyphenols from the chitosan–vanillin matrix was studied, and we reported an initial burst release (8 h) followed by controlled release (8 to 400 h). It was found that both vanillin and green tea polyphenols were successful inhibitors of foodborne bacteria, with a minimum inhibitory concentration of the tea polyphenols determined as 0.15 mg/mL (Staphylococcus aureus). These active components also displayed strong antioxidant capacities, with polyphenols quenching >80% of 2,2-diphenyl-1-picrylhydrazyl (DPPH) radicals at all concentrations tested. Degradation results revealed that there was a significant (>85%) mass loss of all samples after being buried in compost for 12 weeks. The biopolymeric films, prepared by solvent casting methods, adhere to green chemistry and waste valorization principles. The one-pot recipe reported may also be applied to other cross-linkers and active compounds with similar chemical functionalities. Based on the obtained results, the presented material provides a promising starting point for the development of a degradable active packaging material.

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“…Composting is a significant method of waste management, including polymer films. Altun et al [66] used controlled composting reactors to study the biodegradation of chitosan films. Microbial diversity was also determined by PCR-denaturing gradient gel electrophoresis (DGGE).…”

Section: Biodegradation Of Chitosan Films In the Compost After Applic...mentioning

confidence: 99%

Application Potential of Trichoderma in the Degradation of Phenolic Acid-Modified Chitosan

Swiontek Brzezinska,

Kaczmarek-Szczepańska,

Dąbrowska

et al. 2023

Foods

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The aim of the study was to determine the potential use of fungi of the genus Trichoderma for the degradation of phenolic acid-modified chitosan in compost. At the same time, the enzymatic activity in the compost was checked after the application of a preparation containing a suspension of the fungi Trichoderma (spores concentration 105/mL). The Trichoderma strains were characterized by high lipase and aminopeptidase activity, chitinase, and β-1,3-glucanases. T. atroviride TN1 and T. citrinoviride TN3 metabolized the modified chitosan films best. Biodegradation of modified chitosan films by native microorganisms in the compost was significantly less effective than after the application of a formulation composed of Trichoderma TN1 and TN3. Bioaugmentation with a Trichoderma preparation had a significant effect on the activity of all enzymes in the compost. The highest oxygen consumption in the presence of chitosan with tannic acid film was found after the application of the consortium of these strains (861 mg O2/kg after 21 days of incubation). Similarly, chitosan with gallic acid and chitosan with ferulic acid were found after the application of the consortium of these strains (849 mgO2/kg and 725 mg O2/kg after 21 days of incubation). The use of the Trichoderma consortium significantly increased the chitinase activity. The application of Trichoderma also offers many possibilities in sustainable agriculture. Trichoderma can not only degrade chitosan films, but also protect plants against fungal pathogens by synthesizing chitinases and β-1,3 glucanases with antifungal properties.

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Tailoring the Microbial Community for Improving the Biodegradation of Chitosan Films in Composting Environment

Cited by 10 publications

References 46 publications

Methodologies to Assess the Biodegradability of Bio-Based Polymers—Current Knowledge and Existing Gaps

Methodologies to Assess the Biodegradability of Bio-Based Polymers—Current Knowledge and Existing Gaps

Vanillin Cross-Linked Chitosan Film with Controlled Release of Green Tea Polyphenols for Active Food Packaging

Application Potential of Trichoderma in the Degradation of Phenolic Acid-Modified Chitosan

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