Bio-based microplastic polylactic acid exerts the similar toxic effects to traditional petroleum-based microplastic polystyrene in mussels

Zhong, Zhen; Shang, Wenrui; Yang, Peiwen; Wang, Shixiu; Chen, Liming; Chen, Zhaowen; Li, Li’ang; Khalil, Muhammad Faisal; Hu, Menghong; Xu, Xiangrong; Wang, Youji

doi:10.1016/j.scitotenv.2024.174386

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Cited by 3 publications

References 66 publications

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Toxicity comparison of polylactic acid and polyethylene microplastics co-exposed with methylmercury on Daphnia magna

Ali,

Jeong,

Zinck

et al. 2025

Marine Pollution Bulletin

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Toxicity comparison of polylactic acid and polyethylene microplastics co-exposed with methylmercury on Daphnia magna

Ali,

Jeong,

Zinck

et al. 2025

Marine Pollution Bulletin

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Adverse effects of environmentally relevant microplastics on in vivo endpoints, oxidative stress, and mitogen-activated protein kinase signaling pathway and multixenobiotic resistance system in the marine rotifer Brachionus plicatilis

Ali,

Jeong,

Kim

et al. 2025

Science of The Total Environment

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Klebsiella pneumoniaeisolated from the intestines ofTenebrio molitorlarvae (Coleoptera: Tenebrionidae) that consume expanded polystyrene

Caruajulca-Marin,

Huaman-Ventura,

Purihuaman

et al. 2024

Preprint

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Plastics such as polystyrene are resistant to biodegradation, pollute the environment, and negatively impact the health of living organisms. However, several organisms, such as the larvae of Tenebrio molitor (Coleoptera: Tenebrionidae) and their associated gut microbiome, contribute to its degradation. The aim of this research was to determine the efficiency of expanded polystyrene (EPS) degradation by gut bacteria isolated from T. molitor larvae. To achieve this, a set of EPS-degrading bacteria was selected based on the time required to utilize the polymer as a carbon and energy source. Additionally, EPS degradation efficiency was compared, and the most efficient degrading bacterium was identified at the molecular level. Results showed that 95.13% of the bacteria isolated on nutrient agar and 86.57% of those isolated on McConkey agar were able to grow on EPS, with five bacteria being selected that utilized the polymer after 36 hours of incubation. The efficiency of EPS degradation, expressed as the percentage of weight loss by the degrading bacteria, ranged from 5.29% to 12.68%, with a reduction rate of 0.0005 to 0.0013 g per day and a half-life of 533.15 to 1386.20 days. Finally, 16S rRNA gene analysis identified the bacterium as Klebsiella pneumoniae. Cultivable gut bacteria from T. molitor larvae have demonstrated potential as candidates for EPS degradation, and biotechnological techniques can further enhance the efficiency of the degradation process.

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Bio-based microplastic polylactic acid exerts the similar toxic effects to traditional petroleum-based microplastic polystyrene in mussels

Cited by 3 publications

References 66 publications

Toxicity comparison of polylactic acid and polyethylene microplastics co-exposed with methylmercury on Daphnia magna

Toxicity comparison of polylactic acid and polyethylene microplastics co-exposed with methylmercury on Daphnia magna

Adverse effects of environmentally relevant microplastics on in vivo endpoints, oxidative stress, and mitogen-activated protein kinase signaling pathway and multixenobiotic resistance system in the marine rotifer Brachionus plicatilis

Klebsiella pneumoniaeisolated from the intestines ofTenebrio molitorlarvae (Coleoptera: Tenebrionidae) that consume expanded polystyrene

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