| Title | Marine-Derived Actinomycetes: Biodegradation of Plastics and Formation of PHA Bioplastics-A Circular Bioeconomy Approach |
|---|---|
| ID_Doc | 22917 |
| Authors | Oliveira, J; Almeida, PL; Sobral, RG; Lourenço, ND; Gaudêncio, SP |
| Title | Marine-Derived Actinomycetes: Biodegradation of Plastics and Formation of PHA Bioplastics-A Circular Bioeconomy Approach |
| Year | 2022 |
| Published | Marine Drugs, 20.0, 12 |
| Abstract | Plastics are present in the majority of daily-use products worldwide. Due to society's production and consumption patterns, plastics are accumulating in the environment, causing global pollution issues and intergenerational impacts. Our work aims to contribute to the development of solutions and sustainable methods to mitigate this pressing problem, focusing on the ability of marine-derived actinomycetes to accelerate plastics biodegradation and produce polyhydroxyalkanoates (PHAs), which are biodegradable bioplastics. The thin plastic films' biodegradation was monitored by weight loss, changes in the surface chemical structure (Infra-Red spectroscopy FTIR-ATR), and by mechanical properties (tensile strength tests). Thirty-six marine-derived actinomycete strains were screened for their plastic biodegradability potential. Among these, Streptomyces gougerotti, Micromonospora matsumotoense, and Nocardiopsis prasina revealed ability to degrade plastic films-low-density polyethylene (LDPE), polystyrene (PS) and polylactic acid (PLA) in varying conditions, namely upon the addition of yeast extract to the culture media and the use of UV pre-treated thin plastic films. Enhanced biodegradation by these bacteria was observed in both cases. S. gougerotti degraded 0.56% of LDPE films treated with UV radiation and 0.67% of PS films when inoculated with yeast extract. Additionally, N. prasina degraded 1.27% of PLA films when these were treated with UV radiation, and yeast extract was added to the culture medium. The main and most frequent differences observed in FTIR-ATR spectra during biodegradation occurred at 1740 cm(-1), indicating the formation of carbonyl groups and an increase in the intensity of the bands, which indicates oxidation. Young Modulus decreased by 30% on average. In addition, S. gougerotti and M. matsumotoense, besides biodegrading conventional plastics (LDPE and PS), were also able to use these as a carbon source to produce degradable PHA bioplastics in a circular economy concept. |
| https://www.mdpi.com/1660-3397/20/12/760/pdf?version=1670506636 |
Similar Articles
| ID | Score | Article |
|---|---|---|
18551
|
Rasheed, T; Vattathurvalappil, SH; Shaukat, MM; Theravalappil, R; Ali, U; Ummer, AC; Bin Saleem, MT; Jaseer, EA; Imran, M Recent updates on biodegradability and recyclability of bioplastics - Towards a new era in sustainability(2024) | |
| 22811
|
Sourkouni, G; Kalogirou, C; Moritz, P; Gödde, A; Pandis, PK; Hofft, O; Vouyiouka, S; Zorpas, AA; Argirusis, C Study on the influence of advanced treatment processes on the surface properties of polylactic acid for a bio-based circular economy for plastics(2021) | |
| 10019
|
Prieto, A To be, or not to be biodegradable ... that is the question for the bio-based plastics(2016)Microbial Biotechnology, 9.0, 5 | |
| 8993
|
Priya, A; Dutta, K; Daverey, A A comprehensive biotechnological and molecular insight into plastic degradation by microbial community(2022)Journal Of Chemical Technology And Biotechnology, 97.0, 2 | |
| 8317
|
Sales, JCS; Santos, AG; de Castro, AM; Coelho, MAZ A critical view on the technology readiness level (TRL) of microbial plastics biodegradation(2021)World Journal Of Microbiology & Biotechnology, 37.0, 7 | |
| 25533
|
Paço, A; Jacinto, J; da Costa, JP; Santos, PSM; Vitorino, R; Duarte, AC; Rocha-Santos, T Biotechnological tools for the effective management of plastics in the environment(2019)Critical Reviews In Environmental Science And Technology, 49, 5 | |
| 21364
|
Rajvanshi, J; Sogani, M; Kumar, A; Arora, S; Syed, Z; Sonu, K; Sen Gupta, N; Kalra, A Perceiving biobased plastics as an alternative and innovative solution to combat plastic pollution for a circular economy(2023) | |
| 20722
|
Yasin, NM; Akkermans, S; Van Impe, JFM Enhancing the biodegradation of (bio)plastic through pretreatments: A critical review(2022) | |
| 18849
|
Thakur, S; Chaudhary, J; Sharma, B; Verma, A; Tamulevicius, S; Thakur, VK Sustainability of bioplastics: Opportunities and challenges(2018) | |
| 22468
|
Rani, R; Malik, S; Kumar, D; Kumar, R; Mukherjee, S; Saharan, BS; Duhan, JS Advances in the role of microorganisms, waste management strategies and policies on microplastic abatement in the era of bio-circular economy(2024) |