Pretreatment of rice straw by newly isolated fungal consortium enhanced lignocellulose degradation and humification during composting

Sajid, Sumbal; Zveushe, Obey Kudakwashe; Dios, Víctor Resco de; Nabi, Farhan; Lee, Yun Kyung; Kaleri, Abdul Rasheed; Ma, Lin; Zhou, Lei; Zhang, Wei; Dong, Faqin; Han, Yingjie

doi:10.1016/j.biortech.2022.127150

Cited by 59 publications

(12 citation statements)

References 46 publications

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“…A. niger is a well‐exploited producer for high‐activity β ‐glucosidase with desirable enzymatic properties. [ 25 ] As shown in Figure a, the introduction of A. niger boosted BGA as well as the endoglucanase activity (CMCase activity) by the consortium of T. reesei ZJ09 and A. niger (Tr–An), and the BGA and CMCase activity reached 25.49 and 1778.72 IU g −1 , respectively, which was 18.6‐ and 1.47–fold higher, respectively, than that of T. reesei ZJ09 alone. Accompanied by the BGA enhancement, feedback inhibition caused by cellobiose accumulation could be relieved, leading to an improvement in total cellulase activity (FPA).…”

Section: Resultsmentioning

confidence: 99%

Laccase‐Based Self‐Amplifying Catalytic System Enables Efficient Antibiotic Degradation for Sustainable Environmental Remediation

Xia

Lin

2023

Advanced Science

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Antibiotic contamination poses potential risks to ecosystems and human health. Laccase (LAC) has emerged as a promising biocatalyst for the oxidation of environmentally toxic contaminants with high catalytic efficiency; however, its large-scale application is hindered by enzyme costs and dependency on redox mediators. Herein, a novel self-amplifying catalytic system (SACS) for antibiotic remediation that does not require external mediators is developed. In SACS, a natural mediator-regenerating koji with high-activity LAC, derived from lignocellulosic waste, initiates the chlortetracycline (CTC) degradation. Subsequently, an intermediate product, CTC327, identified as an active mediator for LAC via molecular docking, is formed and then starts a renewable reaction cycle, including CTC327-LAC interaction, stimulated CTC bioconversion, and self-amplifying CTC327 release, thus enabling highly efficient antibiotic bioremediation. In addition, SACS exhibits excellent performance in producing lignocellulose-degrading enzymes, highlighting its potential for lignocellulosic biomass deconstruction. To demonstrate its effectiveness and accessibility in the natural environment, SACS is used to catalyze in situ soil bioremediation and straw degradation. The resulting CTC degradation rate is 93.43%, with a straw mass loss of up to 58.35% in a coupled process. This mediator regeneration and waste-to-resource conversion in SACS provides a promising route for environmental remediation and sustainable agricultural practices.

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Section: Resultsmentioning

confidence: 99%

Laccase‐Based Self‐Amplifying Catalytic System Enables Efficient Antibiotic Degradation for Sustainable Environmental Remediation

Xia

Lin

2023

Advanced Science

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“…The conversion of biopolymers into smaller fragments changes the structure of the microbial composition of the pile, promotes the composting process and the quality of decomposition [ 18 , 87 ]. Sajid et al showed significant effect on lignocellulose degradation of rice straw (84%) using fungal pretreatment with higher lignocellulolytic enzymes than chemical pretreatment (79%) or control (61%), and fungal pretreatment of rice straw compost showed significantly higher composting temperature at late thermophilic stage, which enhanced lignocellulose degradation [ 88 ]. Suthar & Kishore Singh et al composting of waste paperboard by pretreatment with mixed culture of fungi reduced cellulose, hemicellulose and lignin in waste paperboard by 35.8%, 68.4% and 69.3%, respectively, with a total dry matter loss of 38.8% [ 89 ].…”

Section: Pretreatment Of Lignocellulosementioning

confidence: 99%

Pretreatment and composting technology of agricultural organic waste for sustainable agricultural development

Shu

et al. 2023

Heliyon

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“…In general, isolates that present some biotechnologically relevant enzymatic activity has a range of metabolic activities and physiological capabilities (i.e., such as the production of enzymes and improvements in the composting process, including shorter processing time) that make them potentially suitable for a wide variety of applications Sajid et al, 2022).…”

Section: Identification Of Yeast and Filamentous Fungi Speciesmentioning

confidence: 99%

Diversity and enzymatic activity of the microbiota isolated from compost based on restaurant waste and yard trimmings

Gaspar

Assis

Prado

et al. 2023

Front. Sustain. Food Syst.

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IntroductionThe bad management of organic waste negatively affects environmental quality and composting has been a viable recycling alternative. Microorganisms are responsible for waste degradation during the composting process and, consequently, for transforming this waste into natural fertilizer. This work aimed to analyze and identify the biodiversity of yeasts and filamentous fungi throughout a composting process based on organic residues under different treatments (commercial inoculum, non-commercial inoculum, and control treatment) and to investigate the enzymatic activity of these microorganisms.MethodsMicroorganisms were isolated and identified from samples at 0, 5, 10, 20, 40, 60, and 120 days. Filamentous fungi were identified according to their macroscopic and microscopic characteristics, and yeasts were identified by sequencing the 18S rDNA region. All identified strains were evaluated for ligninolytic, cellulolytic, hemicellulolytic, amylolytic, pectinolytic, proteolytic, lipolytic, and ammonification. During the composting phases, the filamentous fungi were higher than the yeast population.Results and discussionAt the beginning of the process, a higher species diversity was observed, and the population of yeasts and filamentous fungi was, on average, 6.50 log CFU g−1. The microbial communities were similar throughout the process in the two inoculated treatments, which showed more significant microbial activity, diversity, and efficiency in the transformation of organic matter, and consequently, advantages in terms of the final product quality compared to the control treatment. The yeasts Pichia kudriavzevii, Pichia farinosa, Issatchenkia orientalis, and the filamentous fungi of the genus Aspergillus spp. proved to have high biotechnological value and could be used as starter cultures to accelerate the composting process.

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Pretreatment of rice straw by newly isolated fungal consortium enhanced lignocellulose degradation and humification during composting

Cited by 59 publications

References 46 publications

Laccase‐Based Self‐Amplifying Catalytic System Enables Efficient Antibiotic Degradation for Sustainable Environmental Remediation

Laccase‐Based Self‐Amplifying Catalytic System Enables Efficient Antibiotic Degradation for Sustainable Environmental Remediation

Pretreatment and composting technology of agricultural organic waste for sustainable agricultural development

Diversity and enzymatic activity of the microbiota isolated from compost based on restaurant waste and yard trimmings

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