BIODEGRADATION生物降解
BIODEGRADATION(英文缩写 BIODEGRADATION),ISSN 0923-9820,eISSN 1572-9729,中文译名:生物降解 是一本学术期刊。本页汇总该期刊的最新影响因子、分区信息以及最新收录于 PubMed 的文献,帮助您快速了解期刊全貌。
发文量统计区间：2025-09-27 至 2026-09-27，按本站收录文献的发表日期统计。
期刊介绍
历年影响因子趋势
| JCR 数据年份 | 影响因子 | JCR 分区 |
|---|---|---|
| 2021 | 3.731 | Q2 |
| 2022 | 3.600 | Q2 |
| 2023 | 3.100 | Q2 |
| 2024 | 3.200 | Q2 |
| 2025 | 4.200 | Q2 |
BIODEGRADATION 最新收录文献
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1. Transferability and uncertainty of landfill methane models in hot arid and hyper-arid environments: a critical review with an Arabian Gulf evidence-gap analysis.
PMID:日期:2026-09-22Landfills are a major and, in several settings, growing source of methane, and many widely used operational- and inventory-scale estimates rely on first-order decay (FOD) models whose default parameterizations are largely underpinned by North American and European datasets. Whether these models transfer reliably to hot arid and hyper-arid systems-and specifically to the Arabian Gulf-remains unresolved. This critical review examines that question through a structured descriptive synthesis and an evidence-gap analysis for the six Gulf Cooperation Council (GCC) states. The provenance analysis shows that major frameworks represent aridity through broad climate or moisture categories, with limited direct calibration evidence from hot hyper-arid systems. The synthesis finds that the decay constant is climate-sensitive, with lower fitted values in drier settings; that realized methane yield can fall below nominal potential under persistent moisture limitation; that site-specific parameterization frequently departs materially from defaults; and that the direction of model-measurement disagreement is site-, method- and parameter-specific, so no systematic over- or under-estimation can be attributed to any framework. Screening the regional evidence, including geographic screening of a global satellite survey against GCC boundaries, identified no peer-reviewed site-level measured-versus-modeled landfill methane flux comparison for any GCC state in the present search; local, unindexed or grey studies beyond its reach cannot be excluded. Transferability to Gulf conditions is therefore conditional and not yet locally validated; the review converts this gap into a staged, uncertainty-explicit validation program to establish it by measurement.
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2. Biodegradation of ethanol and acetaldehyde by Lactiplantibacillus plantarum YDL-01 from healthy human feces.
PMID:日期:2026-09-21Excessive alcohol intake triggers a series of systemic health hazards through the accumulation of acetaldehyde, a major carcinogen that poses a severe threat to human health. Here, a promising probiotic bacterial strain capable of biodegrading both ethanol and acetaldehyde was successfully isolated from healthy human feces and identified as Lactiplantibacillus plantarum YDL-01. In vitro assays demonstrated that an initial concentration of 5.0 g/L of ethanol or acetaldehyde could be completely biodegraded within 72 h or 16 h, respectively, by whole cells or cell-free extracts (CEs) of YDL-01, indicating that YDL-01 possesses a strong capacity for the biodegradation of both compounds. Whole-genome sequencing revealed the key genes responsible for alcohol metabolism in YDL-01, elucidating a complete catabolic pathway: ethanol is initially converted to acetaldehyde, catalyzed by alcohol dehydrogenase (ADH, EC 1.1.1.1), and acetaldehyde is further transformed into acetic acid via aldehyde dehydrogenase (ALDH, EC 1.2.1.10). In vitro safety assessments confirmed that YDL-01 exhibits no hemolytic activity and lacks amino acid decarboxylase activities, preliminarily verifying its biosafety, which is critical for the development of functional foods or biotherapeutic products for ethanol and acetaldehyde detoxification.
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3. Biodegradation and metabolic assimilation of poly (butylene adipate-co-terephthalate) (PBAT) by Gordonia sp. CN2K.
PMID:日期:2026-09-19The increasing environmental burden of biodegradable plastics such as poly (butylene adipate-co-terephthalate) (PBAT) necessitates a detailed understanding of their microbial degradation mechanisms. In this study, Gordonia sp. CN2K utilized PBAT as the sole carbon and energy source, with cell density increasing from 1.26 × 10 to 6.26 × 10 CFU mL⁻ over 90 days. PBAT degradation, determined by weight loss measurements, reached 52.8% within 45 days. ATR-FTIR analysis indicated ester bond cleavage and polymer backbone disruption, demonstrating chemical modifications in the PBAT polymer. SEM analysis revealed progressive surface erosion, confirming morphological deterioration during biodegradation. Metabolite profiling identified terephthalic acid (TPA), adipic acid (AA), and oligomeric intermediates, all of which supported bacterial growth as individual substrates. Notably, 1,4-butanediol was not detected in the medium, suggesting rapid uptake and metabolism. Enzyme assays revealed that esterase activity was induced exclusively in PBAT-grown cultures, with higher activity in the extracellular fraction, indicating surface-associated depolymerization. Intracellular enzyme analysis showed the presence of protocatechuate 3,4-dioxygenase and catechol 1,2-dioxygenase, supporting the involvement of ortho-cleavage pathways in aromatic intermediate metabolism. Overall, the results demonstrate a coordinated degradation mechanism involving extracellular depolymerization and intracellular assimilation under substrate-dependent enzyme regulation. These findings highlight Gordonia sp. CN2K as a promising candidate for the biodegradation of PBAT and related copolyesters.
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4. Microbial consortia for pesticide biodegradation: mechanisms, cross-class pathways, and translational challenges.
PMID:日期:2026-09-14The use of synthetic pesticides estimated at 4.1 million metric tons annually worldwide, has led to widespread contamination of soils and aquatic environments, with documented risks to ecosystem integrity and human health. Physicochemical remediation methods are costly and often generate secondary pollutants and toxic intermediates, making microbial bioremediation a lower-residue alternative to physicochemical treatment. Because pesticide degradation in natural environments is rarely achieved by single microbial species, this review critically synthesizes evidence on multi-species microbial consortia-natural, synthetic, and genetically engineered for the biodegradation of six major pesticide classes: organophosphates, carbamates, pyrethroids, neonicotinoids, organochlorines, and triazines. Integration of the ecological mechanisms underlying consortium synergism (sequential metabolic cooperation, metabolic division of labour, biosurfactant-mediated bioavailability enhancement, horizontal gene transfer, and extracellular enzyme cooperation) with the enzymatic and genetic basis of degradation for each pesticide class, and evaluate how emerging tools like multi-omics profiling, CRISPR-based strain engineering, immobilisation technologies, synthetic consortium design, and AI-assisted optimisation are reshaping consortium design. Reported removal efficiencies are consistently higher for consortia than for monocultures across the studies reviewed here, though direct comparisons vary by pesticide class and experimental design. The review closes by evaluating the principal barriers to field-scale translation, strain persistence, ecological risk and regulatory approval, and monitoring of introduced strains and proposes a tiered framework for matching consortium design to contamination scenario. To date, this is the review to integrate ecological interaction mechanisms, class-specific enzymatic pathways, and translational technologies for pesticide-degrading consortia within a single framework.
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5. Tricks and tracks of hybrid constructed wetlands: critical review on emerging contaminant removal pathways.
PMID:日期:2026-09-14Emerging contaminants (ECs), including pharmaceuticals, antibiotics, personal care products, endocrine-disrupting compounds and persistent industrial chemicals, are increasingly detected in wastewater effluents because many are poorly removed by conventional treatment and may form biologically active transformation products. This review critically evaluates hybrid constructed wetlands (HCWs) as engineered biodegradation platforms for EC attenuation, with emphasis on microbial pathways, redox-zonation and substrate-mediated transformation. HCWs integrate vertical-flow, horizontal subsurface-flow and free-water surface units to create coupled aerobic, anoxic, anaerobic, rhizospheric and photic microenvironments. These zones support filtration and sorption, but importantly promote biodegradation, cometabolism, nitrification-denitrification, anaerobic ammonium-oxidation and sulfur-driven autotrophic-denitrification. Anammox bacteria, including Candidatus Brocadia, Candidatus Jettenia, and Candidatus Scalindua, contribute to low-carbon nitrogen removal by coupling ammonium oxidation with nitrite reduction. Sulfur-oxidizing denitrifiers Thiobacillus, Sulfurimonas and Sulfuritalea further stabilize anoxic electron-transfer conditions under carbon-limited wastewater. Although these communities do-not directly mineralize all ECs, they regulate redox gradients, biofilm activity and enzymatic environments that favour transformation of biodegradable and cometabolizable compounds. Conventional gravel and sand provide hydraulic support and show limited dissolved EC-removal, generally below 20-30%, whereas biochar, zeolite and LECA improve removal to 60-90% by enhancing sorption and microbial colonization. Functionalized media, including TiO-coated substrates, Fe/Mn materials and nano-zero-valent (nZVI) iron, can achieve 70-98% removal for selected recalcitrant ECs. Field systems commonly report 50-85% removal, whereas laboratory systems often exceed 90%, indicating a scale-up gap. This review highlights microbial responses to HCW, redox conditions, substrates, rhizosphere-interactions and wastewater characteristics, while identifying future needs in transformation-product tracking, and functional-gene monitoring for SDG 6-oriented wastewater treatment.
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6. Biodegradation of polyethylene by indigenous soil bacteria isolated from municipal landfill sites of Mangaluru.
PMID:日期:2026-09-12Polyethylene (PE) is a widely used synthetic polymer whose resistance to degradation poses a significant environmental challenge. In this study, landfill soils from municipal waste disposal sites in Mangaluru, India, were explored as potential sources of PE-degrading bacteria. Bacterial isolates were screened for their ability to utilize PE as a carbon source, and selected isolates were evaluated for degradation-related activity. Among the tested isolates, the highest PE weight reduction observed after 30 days was 15.38%. Physicochemical characterization of PE films revealed structural alterations, oxidative functional group formation, and surface damage following bacterial treatment. In addition, the laccase assay indicated a significant increase in the enzyme activity during the study period, highlighting the involvement of oxidative pathways. Among the PE-degrading genes screened, alkB was detected in all tested isolates. Molecular identification based on 16S rRNA gene sequencing revealed four bacterial species, among which Escherichia fergusonii and Leclercia adecarboxylata are reported for the first time as PE degraders. Overall, the findings highlight landfill environments as reservoirs of metabolically diverse microorganisms with potential relevance for future plastic biodegradation and bioremediation studies. Further studies focusing on enzymatic mechanisms and process optimization are essential to enhance biodegradation efficiency and enable large-scale applications.
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7. Enhancing vinasse biodegradability through ozonation: a response surface approach toward biogas-oriented wastewater valorization.
PMID:日期:2026-09-10Vinasse, a byproduct of the ethanol industry, poses significant challenges for anaerobic digestion due to its high concentration of recalcitrant phenolic compounds and its tendency to generate excessive foam, which destabilizes reactor hydrodynamics. This study introduces a methodologically transparent approach to pretreating vinasse for anaerobic digestion. While ozonation and polydimethylsiloxane (PDMS) antifoam are established individually, their combined application for processing highly recalcitrant agro-industrial wastewater requires precise control. PDMS was introduced as an operational prerequisite to suppress severe foaming and physically prevent reactor overflow. With physical stability maintained, Response Surface Methodology (RSM) via a central composite design (CCD) was employed to mathematically optimize the critical chemical process variables-pH, ozone flow rate, and contact time-to detoxify the substrate without inhibiting downstream microbial activity The results indicated that ozonation significantly enhanced biodegradability, with the optimal conditions determined at pH 4.0, an ozone flow rate of 2.0 L/min, and a contact time of 90 min. Under these conditions, the treatment achieved high removal efficiencies for COD and phenolic compounds while reducing the carbon-to-nitrogen (C/N) ratio to 16.7, thereby altering the substrate balance before final nutrient adjustment for methanogenesis. Validation experiments confirmed that the operationally stabilized ozonation process increased the methane yield to 0.22 L CH/g COD, a 37.5% increase over untreated vinasse (0.16 L CH/g COD). These findings demonstrate that integrating PDMS with ozonation shows strong lab-scale potential to overcome the mechanical and chemical barriers inherent in processing high-strength agro-industrial wastewater, warranting further pilot-scale engineering studies.
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8. Statistical optimization and ecotoxicological assessment of carbofuran degradation by earthworm gut-associated Bacillus paralicheniformis PPH2.
PMID:日期:2026-09-07The environmental persistence of carbofuran, a potent methylcarbamate neurotoxin, necessitates the development of advanced biotechnological strategies to safeguard soil biodiversity. This study investigated the bioremediation potential of Bacillus paralicheniformis PPH2, a specialized symbiont isolated from a unique ecological niche, the gastrointestinal tract of the indigenous paddy field earthworm Glyphidrilus sp. Unlike traditional soil isolates, strain PPH2 exhibited superior metabolic resilience, growing on carbofuran as the sole carbon and energy source. Through Central Composite Design coupled with Response Surface Methodology, catabolic efficiency was optimized at pH 7.1, 34.7 °C, and 100 rpm, resulting in a validated degradation efficiency of 62.07 ± 1.12% within 120 h. LC-MS/MS analysis revealed the putative identification of carbofuran phenol (m/z 164.36) as the primary biotransformation intermediate, indicating that strain PPH2 likely initiates hydrolytic cleavage of the toxicophoric methylcarbamate ester bond. While the achieved biodegradation efficiency (62.07 ± 1.12%) in unsupplemented minimal medium remains modest compared to specialized multi-strain consortia, it provides substantial acute detoxification, demonstrated by a 1.66-fold reduction in 96-h acute lethality (LC increasing from 5.458 to 9.061 mg a.i./kg) in the sentinel earthworm Eisenia fetida. Collectively, this study provides evidence supporting a potential strategy for improving soil health and safeguarding terrestrial ecosystems from pesticide-associated toxicity by bridging microbial kinetics, statistical optimisation, and quantitative ecotoxicology.
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9. Efficient removal of Ni, Al, and As from water using Micrococcus yunnanensis: batch experiments and explainable machine learning.
PMID:日期:2026-09-07In this study, a bacterial strain of Micrococcus yunnanensis was isolated from the discharge water of an organized industrial zone wastewater treatment plant and used in the bioremoval of Al, Ni, and As. The effects of different experimental conditions such as initial metal concentration, pH, temperature, contact time, and biomass concentration on metal bioremoval were evaluated, and peak removal conditions were identified. The highest removal rates were 80, 68, and 27.33% for Al, Ni, and As, respectively. The isotherm and kinetic results for all metals showed that they fit the non-linear Langmuir and pseudo-second-order models, respectively. Ten representative machine-learning algorithms from linear, tree-based, ensemble, kernel, instance-based, and neural-network approaches were comparatively evaluated using a combined multi-metal dataset. The Extra Trees model was found to exhibit the best generalization performance (CV R = 0.948; test R = 0.941; RMSE = 5.98; and MAE = 4.553). To improve the interpretability of the results, SHAP analysis was performed, and the most important parameters were identified as metal type, initial metal concentration, and contact time, respectively. Of the two different training strategies followed in our study, models trained with a complete metal dataset were shown to be more successful than models trained with subsets containing each metal separately. This study contributes to the growing application of explainable machine learning in bioremoval research by integrating an environmentally isolated M. yunnanensis strain with a unified multi-metal predictive framework for Ni, Al, and As bioremoval.
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10. Low-pH sulfate reduction in acid mine drainage treatment systems: implications for acidophilic and acid-tolerant sulfate-reducing bacteria - a systematic review.
PMID:日期:2026-08-31Acid mine drainage (AMD) is characterized by persistent acidity, high sulfate and dissolved metal concentrations. Sulfate-reducing bacteria (SRB) are attractive candidates for AMD remediation because dissimilatory sulfate reduction generates alkalinity while producing sulfide that can facilitate metal removal through precipitation. Extending these processes to acidic conditions has increased interest in acidophilic and acid-tolerant SRB (aSRB and atSRB), yet evidence from cultivation, molecular surveys and treatment systems has often been interpreted separately. This systematic review synthesized 53 culture-dependent, culture-independent, and treatment system studies from 2014 to 2024 to examine relationships among taxonomic occurrence, physiological capability, demonstrated low-pH sulfate reduction and treatment performance. Phylogenetic analysis showed that low-pH sulfate-reducing phenotypes were distributed across multiple lineages and 16S rRNA relatedness alone did not predict acid tolerance. Desulfosporosinus was the most consistently represented genus across studies, although its recurrence was influenced by cultivation strategies. Sulfate reduction was demonstrated below pH 3, with sustained low-pH activity most strongly supported by controlled reactor studies; approximately pH 4.0-5.5 emerged as a comparatively well-supported range, while activity at lower pH was more dependent on microbial physiology and experimental conditions. Low-pH sulfate reduction also emerged as a community-level process shaped by electron-donor use, metabolite turnover and complementary microbial functions, while treatment performance additionally depended on biomass retention, hydraulic conditions and sulfide management. The reviewed studies support a distinction between taxonomic presence, demonstrated activity and treatment contribution. Future work should prioritize standardized reporting of active sulfate-reduction conditions, stronger taxon-function validation and long-term field testing of low-pH sulfidogenic systems.