Wax worm saliva and the enzymes therein are the key to polyethylene degradation by Galleria mellonella

Article Engineering, Environmental

Plastic biodegradation: Do Galleria mellonella Larvae Bioassimilate Polyethylene? A Spectral Histology Approach Using Isotopic Labeling and Infrared Microspectroscopy

Agnes Rejasse et al.

Summary: The larvae of Greater Wax Moth, Galleria mellonella, can partially degrade polyethylene (PE) plastics but cannot fully metabolize them.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2022)

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Article Biochemistry & Molecular Biology

The Profile of Polyphenolic Compounds, Contents of Total Phenolics and Flavonoids, and Antioxidant and Antimicrobial Properties of Bee Products

Tomasz Sawicki et al.

Summary: This study aimed to characterize the chemical composition, antioxidant potential, and antimicrobial activity of bee products. The results showed that bee pollen and bee bread had stronger antioxidant potential, while honey was more effective against Gram-positive bacteria.

MOLECULES (2022)

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Article Biochemistry & Molecular Biology

The PRIDE database resources in 2022: a hub for mass spectrometry-based proteomics evidences

Yasset Perez-Riverol et al.

Summary: PRIDE is the largest data repository of mass spectrometry-based proteomics data in the world, with around 500 datasets submitted per month. In addition to continuous improvements in data pipelines and infrastructure, PRIDE has developed the Spectra Archive and MAGE-TAB file format to enhance sample metadata annotation and access to mass spectra.

NUCLEIC ACIDS RESEARCH (2022)

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Article Chemistry, Applied

From trash to treasure: Chemical recycling and upcycling of commodity plastic waste to fuels, high-valued chemicals and advanced materials

Fan Zhang et al.

Summary: Plastics, as versatile materials, have caused significant environmental problems and resource waste due to their extensive production and difficulty in degradation. This article summarizes recently developed chemical recycling methods for plastics, especially new catalytic paths, that aim to economically and environmentally valorize plastic waste. The article emphasizes the design criteria for new catalysts and innovative catalytic technologies for plastic upcycling.

JOURNAL OF ENERGY CHEMISTRY (2022)

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Article Engineering, Environmental

Fat on plastic: Metabolic consequences of an LDPE diet in the fat body of the greater wax moth larvae (Galleria mellonella)

Bryan J. Cassone et al.

Summary: The greater wax moth caterpillar larvae actively feed on LDPE plastic, but a diet of LDPE is not enough to sustain optimal larval growth and survival. The larvae retain fat body lipid stores proportional to their polyethylene consumption and maintain oxidative capacity, but show various nutritional deficiencies when fed with LDPE. This study provides new insights into the complex interaction between LDPE biodegradation and the metabolic physiology of this plastic-eating model organism.

JOURNAL OF HAZARDOUS MATERIALS (2022)

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Review Biotechnology & Applied Microbiology

Non-Hydrolyzable Plastics - An Interdisciplinary Look at Plastic Bio-Oxidation

Hedda Inderthal et al.

Summary: Enzymatic plastic conversion is seen as a potential alternative to traditional plastic waste management, with a focus on biodegradable plastics such as polyesters. However, there are still challenges in applying enzymatic degradation to other commercial plastics. Addressing extensive knowledge gaps and understanding the crucial impact of physicochemical factors on reactions in less well-studied plastic types are essential for expanding the application of enzymatic degradation.

TRENDS IN BIOTECHNOLOGY (2021)

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Article Entomology

Identification of salivary proteins in the whiteflyBemisia tabaciby transcriptomic and LC-MS/MS analyses

Hai-Jian Huang et al.

Summary: The study characterized the gene/protein repertoires of whiteflyBemisia tabaci salivary glands and secreted saliva, finding similarities with other arthropods but also unique proteins specific to B. tabaci. Differential regulation of salivary proteins on different hosts indicates potential applications in future functional studies and pest management.

INSECT SCIENCE (2021)

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Article Biochemistry & Molecular Biology

In vitro degradation of low-density polyethylene by new bacteria from larvae of the greater wax moth, Galleria mellonella

Zahra Montazer et al.

Summary: The study evaluated the ability of three bacterial species isolated from greater wax moth larvae to utilize low-density polyethylene (LDPE) as a sole carbon source. Results showed that these bacteria could degrade LDPE and bacterial consortia were more effective in degrading LDPE than individual species. Gas chromatographic analyses revealed the presence of linear alkanes and unknown putative LDPE hydrolysis products in some bacterial culture media.

CANADIAN JOURNAL OF MICROBIOLOGY (2021)

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Article Environmental Sciences

Degradation of plastic waste using stimulated and naturally occurring microbial strains

Navid Taghavi et al.

Summary: This study investigated the biodegradation capability of microbial strains derived from soil, activated sludge, farm sludge, and worms' excreta on high-density polyethylene, polystyrene foam, polypropylene, and polyethylene terephthalate under unstimulated and stimulated conditions. The most effective plastic-degrading microbes were identified as Penicillium raperi, Aspergillus flavus, Penicillium glaucoroseum, and Pseudomonas sp. In the mixed condition, incubation of polyethylene with Aspergillus flavus showed the highest weight loss at 5.5%. Further analysis using Fourier Transform Infrared Spectroscopy revealed the formation of new functional groups on the treated plastics.

CHEMOSPHERE (2021)

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Review Environmental Sciences

Understanding plastic degradation and microplastic formation in the environment: A review

Kai Zhang et al.

Summary: Plastic waste pollution is a global issue that poses a potential threat to ecosystems and human health, but knowledge on plastic environmental degradation and microplastic formation is still limited. Future research should further study the key factors influencing plastic degradation to predict the fate of plastics in different environments.

ENVIRONMENTAL POLLUTION (2021)

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Review Environmental Sciences

Critical evaluation of biodegradation studies on synthetic plastics through a systematic literature review

Tjasa Matjasic et al.

Summary: This study conducted a systematic literature review on bacterial biodegradation of synthetic plastics, identifying common bacteria and suggesting future research directions. The importance of standardized reporting protocols and comprehensive information for replication by other research groups was emphasized.

SCIENCE OF THE TOTAL ENVIRONMENT (2021)

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Article Polymer Science

Polystyrene Biodegradation by Tenebrio molitor Larvae: Identification of Generated Substances Using a GC-MS Untargeted Screening Method

Emmanouil Tsochatzis et al.

Summary: A GC-MS method was used to screen and evaluate the chemical compounds generated during the biodegradation of polystyrene (PS) with Tenebrio molitor larvae, identifying various compounds including trimers, volatiles, and non-intentionally added substances. Bioactive molecules like fatty acids and amides were also identified in the biomass of the insects, suggesting enzymatic and biochemical activity during the degradation process. The overall degradation rate of PS was found to be 13%, highlighting the potential of biorecycling with these insects.

POLYMERS (2021)

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Article Environmental Sciences

Confirmation of biodegradation of low-density polyethylene in dark- versus yellow- mealworms (larvae of Tenebrio obscurus versus Tenebrio molitor) via. gut microbe-independent depolymerization

Shan-Shan Yang et al.

Summary: The larvae of Tenebrio obscurus and Tenebrio molitor demonstrated similar capacity for degrading LDPE foams, showing a broad depolymerization pattern with a digestion rate of nearly 40% to CO2. Antibiotic suppression of gut microbes did not halt depolymerization, indicating that LDPE biodegradation in T. obscurus was independent of gut microbes. High-throughput sequencing revealed significant shifts in the gut microbial community during LDPE feeding in both Tenebrio species.

SCIENCE OF THE TOTAL ENVIRONMENT (2021)

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Review Environmental Sciences

Plastic biodegradation: Frontline microbes and their enzymes

Ayodeji Amobonye et al.

Summary: Plastic waste poses a serious threat to the environment, causing pollution, climate change, and disruption to aquatic ecosystems. Recent research has shifted focus to the potential of biological degradation of plastics, examining the roles of microorganisms and enzymes in this process.

SCIENCE OF THE TOTAL ENVIRONMENT (2021)

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Article Chemistry, Applied

The impact of polystyrene consumption by edible insects Tenebrio molitor and Zophobas morio on their nutritional value, cytotoxicity, and oxidative stress parameters

Ewelina Zielinska et al.

Summary: The study aimed to determine the nutritional value, cytotoxicity, and oxidative stress parameters in cells of selected insect species (Tenebrio molitor and Zophobas mores) after consuming Styrofoam for 30 days. The research also included a consumer survey on willingness to eat insects fed with Styrofoam. Mealworms fed with Styrofoam had higher protein and ash content with reduced fat and carbohydrate content, while no significant difference was observed in superworms. Additionally, Styrofoam did not affect the health status of gut cells in examined insects, and replacing traditional insect diet with polystyrene foam did not increase cytotoxic properties in studied concentrations.

FOOD CHEMISTRY (2021)

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Review Fisheries

Immune properties of invertebrate phenoloxidases*

Lage Cerenius et al.

Summary: Melanin production by different types of phenoloxidases provides immunity to a variety of pathogens, while proPO in arthropods exhibits multiple activities such as cytokine and microbiocidal activities. Pathogens influence proPO activation and the types of immune effects produced.

DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY (2021)

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Article Engineering, Environmental

Plastic Formulation is an Emerging Control of Its Photochemical Fate in the Ocean

Anna N. Walsh et al.

Summary: Sunlight exposure can significantly increase the production of dissolved organic carbon (DOC) from consumer PE bags, with plastic formulation, especially TiO2, playing a determining role in the amount and composition of the generated DOC.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2021)

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Review Chemistry, Physical

Chemical and biological catalysis for plastics recycling and upcycling

Lucas D. Ellis et al.

Summary: Plastic pollution is causing an environmental crisis, driving the development of new recycling and upcycling methods. Both chemical and biological catalysis face challenges and opportunities, requiring innovative design to overcome limitations.

NATURE CATALYSIS (2021)

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Article Genetics & Heredity

BRAKER2: automatic eukaryotic genome annotation with GeneMark-EP plus and AUGUSTUS supported by a protein database

Tomas Bruna et al.

Summary: The task of eukaryotic genome annotation remains challenging and the new BRAKER2 pipeline is an automatic method that outperforms other pipelines in terms of accuracy and performance, yet further innovations are required to achieve highly accurate annotation.

NAR GENOMICS AND BIOINFORMATICS (2021)

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Article Environmental Sciences

Biodegradation and mineralization of polystyrene by plastic-eating superworms Zophobas atratus

Yu Yang et al.

SCIENCE OF THE TOTAL ENVIRONMENT (2020)

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Article Biochemistry & Molecular Biology

Impact of polyethylene on salivary glands proteome in Galleria melonella

Asal Peydaei et al.

COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY D-GENOMICS & PROTEOMICS (2020)

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Article Engineering, Environmental

Biodegradation of Polyethylene and Polystyrene by Greater Wax Moth Larvae (Galleria mellonella L.) and the Effect of Co-diet Supplementation on the Core Gut Microbiome

Yu Lou et al.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2020)

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Article Environmental Sciences

Biodegradation of polyethylene microplastic particles by the fungus Aspergillus flavus from the guts of wax moth Galleria mellonella

Junqing Zhang et al.

SCIENCE OF THE TOTAL ENVIRONMENT (2020)

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Phenolic Profile, Antioxidant Capacities and Enzymatic Inhibitory Activities of Propolis from Different Geographical Areas: Needs for Analytical Harmonization

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Challenges with Verifying Microbial Degradation of Polyethylene

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Microbial and Enzymatic Degradation of Synthetic Plastics

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A Very Hungry Caterpillar: Polyethylene Metabolism and Lipid Homeostasis in Larvae of the Greater Wax Moth (Galleria mellonella)

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ENVIRONMENTAL SCIENCE & TECHNOLOGY (2020)

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The Galleria mellonella Hologenome Supports Microbiota-Independent Metabolism of Long-Chain Hydrocarbon Beeswax

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Biodegradation of Polyethylene by Enterobacter sp. D1 from the Guts of Wax Moth Galleria mellonella

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The plastisphere in marine ecosystem hosts potential specific microbial degraders including Alcanivorax borkumensis as a key player for the low-density polyethylene degradation

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Wax worm saliva and the enzymes therein are the key to polyethylene degradation by Galleria mellonella

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