Lignocellulolytic enzymes from tropical fungi: Types, substrates and applications

Mtui, Godliving Y. S.

doi:10.5897/sre11.1812

Cited by 25 publications

(10 citation statements)

References 83 publications

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“…60,63 Similarly, some fungi obtained were identified to belong to both lignolytic and non-lignolytic classes of fungi; a combination of both classes was found to be beneficial to the bioremediation of PAHs through oxidation of the hydrocarbons. 64 Furthermore, a selection of bacteria identified in this study has been identified to play a functional role in the degradation of aliphatic and aromatic hydrocarbons due to their involvement in the catabolic pathways of such hydrocarbons. Such organisms belong to the genera Advenella, Achromobacter, Bacillus, Mycobacterium, Ochrobactrum, Pseudomonas, and Stenotrophomonas.…”

Section: Discussionmentioning

confidence: 98%

Potential microbial drivers of biodegradation of polycyclic aromatic hydrocarbons in crude oil sludge using a composting technique

Obi

Atagana

Adeleke

et al. 2020

J of Chemical Tech & Biotech

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BACKGROUND Improper disposal of crude oil sludge poses a public health risk due to the toxic nature of components of the waste, especially polycyclic aromatic hydrocarbons (PAHs). Such toxic wastes can be treated by bioremediation of the polluted sites with composting, an eco‐friendly technique that is gaining acceptance. Crude oil sludge was composted for four months during which surfactants were introduced. Fungi and bacteria were isolated from the compost using basic culture techniques. Residual concentrations of PAH components of the sludge during the composting period was monitored with gas chromatography – mass spectrometry (GC‐MS). RESULTS Molecular characterization of the internal transcribed spacer (ITS) genes of fungal isolates classified fungi in the compost into different genera including Aspergillus, Bionectria, Doratomyces, Exophiala, Fusarium, Galactomyces, Geotrichum, Mucor, Penicillium, Trichoderma and Trichurus. The bacterial isolates were classified into Stenotrophomonas, Pseudomonas, Bordetella, Brucella, Bacillus, Achromobacter, Advenella, Klebsiella, Mesorhizobium, Mycobacterium, Ochrobactrum, Pusillimonas and Raoultella. Results from analysis of residual PAH concentrations of composted samples showed higher degradation efficiency of the higher molecular weight (HMW) PAHs resulting in their complete degradation, whereas the lower molecular weight PAHs were not degraded completely. CONCLUSIONS Compost bioremediation is a sustainable waste management technique for hazardous wastes such as crude oil sludge. Inclusion of surfactants at different concentrations did not constantly improve the bioavailability of PAH compounds in the crude oil sludge but it promoted fungal growth in the treatments. © 2020 Society of Chemical Industry

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Section: Discussionmentioning

confidence: 98%

Potential microbial drivers of biodegradation of polycyclic aromatic hydrocarbons in crude oil sludge using a composting technique

Obi

Atagana

Adeleke

et al. 2020

J of Chemical Tech & Biotech

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“…Sometimes referred to as lignocellulases, they include hydrolytic enzymes that degrade recalcitrant lignocellulose, a component of plant biomass. Studies show that lignocellulolytic enzymes can be characterized as a large group of mainly extracellular proteins, which include ligninolytic enzymes (peroxidases and oxidases) and hydrolytic enzymes (cellulases, hemicellulases, pectinases, chitinases, amylases, proteases, esterases, and mannanases) [23]. Enzymes are macromolecules produced by living organisms that, when introduced into a reaction or system, can help accelerate biological/biochemical reactions.…”

Section: Lignocellulolytic Enzymesmentioning

confidence: 99%

Lignocellulolytic Enzymes in Biotechnological and Industrial Processes: A Review

et al. 2020

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Tons of anthropological activities contribute daily to the massive amount of lignocellulosic wastes produced annually. Unfortunately, their full potential usually is underutilized, and most of the biomass ends up in landfills. Lignocellulolytic enzymes are vital and central to developing an economical, environmentally friendly, and sustainable biological method for pre-treatment and degradation of lignocellulosic biomass which can lead to the release of essential end products such as enzymes, organic acids, chemicals, feed, and biofuel. Sustainable degradation of lignocellulosic biomass via hydrolysis is achievable by lignocellulolytic enzymes, which can be used in various applications, including but not limited to biofuel production, the textile industry, waste treatment, the food and drink industry, personal care industry, health and pharmaceutical industries. Nevertheless, for this to materialize, feasible steps to overcome the high cost of pre-treatment and lower operational costs such as handling, storage, and transportation of lignocellulose waste need to be deployed. Insight on lignocellulolytic enzymes and how they can be exploited industrially will help develop novel processes that will reduce cost and improve the adoption of biomass, which is more advantageous. This review focuses on lignocellulases, their use in the sustainable conversion of waste biomass to produce valued-end products, and challenges impeding their adoption.

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“…Jamur dapat tumbuh sendiri secara alami dan mendegradasi limbah lignoselulosa. Beberapa jamur pelapuk ( ) yang rotting fungi digunakan dalam biodegradasi limbah industri pulp dan kertas antara lain Ganoderma lucidum, Pleurotus ostreatus, P. sajor-caju dan (Mtui, 2012;Suprapti, 2013). Sisa media jamur ( ) spent compost jamur shiitake yang diinokulasikan pada tanah yang mengandung pentachlorophenol dapat menurunkan pencemar tersebut sebesar 44-61% (Suprapti, 2013).…”

Section: Pendahuluanunclassified

PEMANFAATAN SISA MEDIA JAMUR PELAPUK PADA DEKOMPOSISI LIMBAH PADAT PULP Acacia mangium

Suprapti

Djarwanto

Komarayati

2017

j.penelit.has.kehutan

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Currently, Ganoderma lucidum, Pleurotus ostreatus, and P. sajor-caju are prospective fungi for decomposition of pulp and paper industry's waste. This paper studies the possible utilization of rotting fungi spent compost for decomposition of mangium sludge. Initially, the fungi were cultivated for three months on medium prepared from sengon (Falcataria moluccana) wood sawdust. ABSTRAKSaat ini, jamur Ganoderma lucidum, Pleurotus ostreatus, dan P. sajor-caju berprospek untuk mendekomposisi limbah industri pulp dan kertas. Tulisan ini mempelajari kemungkinan pemanfaatan sisa media jamur pelapuk untuk dekomposisi limbah padat mangium. Jamur tersebut dibudidayakan terlebih dahulu pada media serbuk gergaji kayu sengon (Falcataria moluccana) selama tiga bulan. Sisa media jamur digunakan sebagai aktivator degradasi, dengan cara diinokulasikan ke dalam limbah padat pulp Acacia mangium, kemudian diinkubasikan selama enam bulan. Hasil penelitian menunjukkan bahwa dalam tiga bulan masa inkubasi, nilai Efisiensi Konversi Biologi (EKB) oleh jamur pada serbuk gergaji kayu sengon adalah 13,41% (G. lucidum), 47,11 % (P. ostreatus), dan 38,06% (P. sajor-caju). Inokulasi jamur ke dalam limbah padat meningkatkan nisbah C/N sebesar 71,59%. Semakin tinggi konsentrasi inokulan G. lucidum, nilai C/N cenderung meningkat. Setelah enam bulan, kadar unsur haranya turun sebesar 48,76% (N); 35,42% (P), dan 25% (K), namun kadar Ca dan Mg meningkat masing-masing sebesar 112,9% dan 6,67%. Pada kontrol terjadi penurunan sebesar 66,12% (Ca); 68,75% (P); 4,17% (Mg), dan terjadi kenaikan kadar K dan Ca masing-masing 2,08% dan 64,52%. Rata-rata nilai kapasitas tukar kation (KTK) limbah padat setelah inkubasi selama enam bulan naik 3,85% (kontrol) dan 56,8% (yang diinokulasi dengan jamur).

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Lignocellulolytic enzymes from tropical fungi: Types, substrates and applications

Cited by 25 publications

References 83 publications

Potential microbial drivers of biodegradation of polycyclic aromatic hydrocarbons in crude oil sludge using a composting technique

Potential microbial drivers of biodegradation of polycyclic aromatic hydrocarbons in crude oil sludge using a composting technique

Lignocellulolytic Enzymes in Biotechnological and Industrial Processes: A Review

PEMANFAATAN SISA MEDIA JAMUR PELAPUK PADA DEKOMPOSISI LIMBAH PADAT PULP Acacia mangium

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