期刊
MOLECULES
卷 26, 期 24, 页码 -出版社
MDPI
DOI: 10.3390/molecules26247568
关键词
biodegradation of polystyrene (PS); insects; Tenebrio molitor larvae; gut microbiome; degradation compounds
资金
- European Cooperation in Science and Technology (COST) Circul-a-bility action
- CiFOOD, the center of innovative foods at Aarhus University
The study analyzed the degradation mechanism of polystyrene (PS) by mealworms (Tenebrio molitor), suggesting that the gut microbiome may play a key role in PS degradation. Different feeding strategies impacted the formation of degradation compounds, with H2O improving the biodegradation efficiency of PS. Variations in gut microbiota were observed among treatments, and three potential bacterial strains were identified as candidates involved in the biodegradation of PS.
Polystyrene (PS) is a plastic polymer extensively used for food packaging. PS is difficult to decompose and has low recycling rates, resulting in its accumulation in the environment, in the form of microplastic particles causing pollution and harming oceans and wildlife. Degradation of PS by mealworms (Tenebrio molitor) has been suggested as a possible biological strategy for plastic contamination; however, the biodegradation mechanism of PS by mealworms is poorly understood. It is hypothesized that the gut microbiome plays an important role in the degradation of PS by mealworms. This study carried out a comparative analysis of the gut microbiome of Tenebrio molitor larvae under different feeding strategies, and of the formation of degradation compounds (monomers, oligomers). A diet of bran:PS at 4:1 and 20:1 ratios was tested. The diet with the low ratio of bran:PS led to the presence of higher amounts of these compounds, compared to that with the high ratio. In addition, it was demonstrated that the addition of H2O significantly improved the biodegradation of PS monomer and oligomer residues, which could be identified only in the frass. The protein and nitrogen contents in insects' biomass and frass varied amongst treatments. The diets resulted in differences in the gut microbiota, and three potential bacterial strains were identified as candidates involved in the biodegradation of PS.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据