Responses of δ13C and reactive oxygen and nitrogen species to microplastics biodegradation in Plastivore mealworms (Tenebrio molitor) - Details

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The　elevation　of　reactive　oxygen　species　(ROS)　has　been　reported　during　polystyrene　(PS)　biodegradation　in　plastivore　larvae.　However,　the　mechanisms　underlying　the　biodegradation　of　a　broader　range　of　microplastics　(MPs)　and　the　role　of　reactive　nitrogen　species　(RNS)　remain　unclear,　and　the　role　of　reactive　nitrogen　species　(RNS)　in　this　process　remains　poorly　understood.　Here,　we　further　investigated　biodegradation　of　MPs　of　persistent　plastics　(i.e.,　low-density　polyethylene　(LDPE),　PS,　polyvinyl　chloride　(PVC),　and　biodegradable　polylactic　acid　(PLA)　in　Tenebrio　molitor　larvae　with　δ13C　isotopic　assay　and　gel　permeation　chromatography　(GPC)　analysis　as　key　indicators　for　plastic　biodegradation　over　three　weeks,　focusing　on　plastic　mass　reduction,　ROS　and　RNS　elevation,　and　egested　plastic　particle　size　in　relation　to　energy-rich　co-diet　wheat　bran.　Supplementation　of　wheat　bran　enhanced　plastic-specific　degradation　rate,　and　total　mass　was　reduced　significantly,　while　Δδ13C　values　and　molecular　weight　of　residual　polymers　changed　less　significantly　(p　2O2)　were　elevated　in　the　larval　guts　during　MPs　biodegradation,　depending　upon　polymer　biodegradability,　and　mitigated　with　the　supplementation　of　the　co-diet.　These　findings　highlight　the　cooperative　role　of　ROS　and　RNS　in　larval-driven　MP　degradation,　demonstrating　a　promising　biological　route　for　efficient　microplastic　removal　without　the　risk　of　MNPs,　and　provide　mechanistic　and　applied　insights　for　sustainable　plastic　pollution　management.　©　2025　Elsevier　B.V.

Keyword：

Biodegradability Biodegradation Degradation Elastomers Microplastic Nitrogen Nutrition Oxygen Particle size analysis Plastic bottles

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[ 1 ] [Xu, Yazhou]College of Environmental Science and Engineering, Tongji University, Shanghai; 200092, China
[ 2 ] [Xu, Yazhou]State Key Laboratory of Water Pollution Control and Green Resource Recycling, College of Environmental Science and Engineering, Tongji University, Shanghai; 200092, China
[ 3 ] [Xu, Yazhou]National Engineering Research Center of Protected Agriculture, Shanghai Engineering Research Center of Protected Agriculture, Tongji University, Shanghai; 200092, China
[ 4 ] [Xiao, Shaoze]College of Environmental Science and Engineering, Tongji University, Shanghai; 200092, China
[ 5 ] [Xiao, Shaoze]State Key Laboratory of Water Pollution Control and Green Resource Recycling, College of Environmental Science and Engineering, Tongji University, Shanghai; 200092, China
[ 6 ] [Xu, Qianfeng]College of Environmental Science and Engineering, Tongji University, Shanghai; 200092, China
[ 7 ] [Xu, Qianfeng]State Key Laboratory of Water Pollution Control and Green Resource Recycling, College of Environmental Science and Engineering, Tongji University, Shanghai; 200092, China
[ 8 ] [Peng, Bo-Yu]College of Environmental Science and Engineering, Tongji University, Shanghai; 200092, China
[ 9 ] [Yang, Libin]College of Environmental Science and Engineering, Tongji University, Shanghai; 200092, China
[ 10 ] [Yang, Libin]State Key Laboratory of Water Pollution Control and Green Resource Recycling, College of Environmental Science and Engineering, Tongji University, Shanghai; 200092, China
[ 11 ] [Chen, Jiabin]College of Environmental Science and Engineering, Tongji University, Shanghai; 200092, China
[ 12 ] [Chen, Jiabin]State Key Laboratory of Water Pollution Control and Green Resource Recycling, College of Environmental Science and Engineering, Tongji University, Shanghai; 200092, China
[ 13 ] [Zhou, Xuefei]College of Environmental Science and Engineering, Tongji University, Shanghai; 200092, China
[ 14 ] [Zhou, Xuefei]State Key Laboratory of Water Pollution Control and Green Resource Recycling, College of Environmental Science and Engineering, Tongji University, Shanghai; 200092, China
[ 15 ] [Wu, Wei-Min]Department of Civil and Environmental Engineering, William & Cloy Codiga Resource Recovery Center, Stanford University, Stanford; CA; 94305-4020, United States
[ 16 ] [Zhang, Yalei]College of Environmental Science and Engineering, Tongji University, Shanghai; 200092, China
[ 17 ] [Zhang, Yalei]State Key Laboratory of Water Pollution Control and Green Resource Recycling, College of Environmental Science and Engineering, Tongji University, Shanghai; 200092, China
[ 18 ] [Zhang, Yalei]National Engineering Research Center of Protected Agriculture, Shanghai Engineering Research Center of Protected Agriculture, Tongji University, Shanghai; 200092, China
[ 19 ] [Zhang, Yalei]College of Environment and Safety Engineering, Fuzhou University, Fuzhou; 350108, China

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Source ：

Chemical Engineering Journal

ISSN： 1385-8947

Year： 2025

Volume： 524

1 3 . 4 0 0

JCR@2023

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ESI Highly Cited Papers on the List： 0 Unfold All

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