Evaluation of Biological Pretreatment of Rubberwood with White Rot Fungi for Enzymatic Hydrolysis

Nazarpour, Forough Kalaei; Abdullah, Dzulkefly Kuang; Abdullah, Norhafizah; Zamiri, Reza

doi:10.3390/ma6052059

Cited by 85 publications

(53 citation statements)

References 36 publications

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“…selectively degrade lignin in EFBs. Nazarpour et al (2013) found by the FTIR analysis that there was chemical changes during incubation of rubberwood by Ceriporiopsis subvermispora i.e lignin degradation but only a little change on carbohydrate degradation. The high selectivity for lignin degradation suggests that the fungus secrete a higher activity of lignin-degrading enzymes than cellulose and hemicellulose, and is therefore white rot fungus treatment is www.ccsenet.org/mas Modern Applied Science Vol.…”

Section: Resultsmentioning

confidence: 92%

Pretreatment of Marasmius sp. on Biopulping of Oil Palm Empty Fruit Bunches

Risdianto¹,

Sugesty²

2015

MAS

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White rot fungi have an ability to degrade lignin by employing lignin-degrading enzymes i.e Lignin Peroxidase, Manganese Peroxidase and Laccase. Therefore, the fungi can be utilized on the pretreatment of biomass in pulp making (biopulping) and biobleaching. In this study, the pretreatment using White Rot Fungi of Marasmius sp. has been conducted on the the Oil Palm Empty Fruit Bunches (EFBs). Marasmius sp. has been grown on EFBs for 30 days. The results showed that the lignin content could be removed by 35.94%. However, cellulose and hemicelluloses relatively did not show any changes in the EFBs. From the pulping process, the pretreatment exhibited the Kappa Number of 31.10. Compared to no pretreatment of white rot fungi, the Kappa Number obtained was 38.63. This result demonstrated a promising process for a green pulp making.

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Section: Resultsmentioning

confidence: 92%

Pretreatment of Marasmius sp. on Biopulping of Oil Palm Empty Fruit Bunches

Risdianto¹,

Sugesty²

2015

MAS

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“…Keempat jamur menunjukkan kecenderungan yang sama, yaitu mampu menyisihkan lignin. Hasil penelitian lain menunjukkan bahwa lignin pada kayu karet juga berhasil disisihkan oleh Trametes versicolor dengan selektivitas terhadap lignin antara 1,07 -1,16 (Nazarpour et al, 2013). Gambar 1.…”

Section: Biopulpingunclassified

PENGARUH APLIKASI JAMUR PELAPUK PUTIH PADA BIOPULPING RAMI (<i>Boehmeria nivea</i>) TERHADAP KUALITAS PULP BELUM PUTIH (<i>EFFECT OF WHITE ROT FUNGI APPLICATION IN BIOPULPING OF RAMIE (Boehmeria Nivea) ON THE QUALITY OF UNBLEACHED PULP</i>)

Purwita

Risdianto

2016

J selulosa

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The research of white rot fungi application in biopulping ramie has been done to obtain the effective fungus. The ABSTRAKPenelitian aplikasi jamur pelapuk putih pada biopulping rami telah dilakukan dengan tujuan mendapatkan jenis jamur yang efektif. Penelitian dilakukan dalam 3 tahap : biopulping, pemasakan, dan pembuatan lembaran pulp. Biopulping rami dilakukan dengan variasi 4 spesies jamur, yaitu Phanerochaete chrysosporium, Marasmius sp., Trametes hirsuta, dan Trametes versicolor, pada kondisi suhu ±28 °C selama 7 hari. Pemasakan dilakukan terhadap rami dari perlakuan biopulping terpilih dan dibandingkan dengan rami tanpa perlakuan jamur. Percobaan pemasakan dilakukan dengan proses soda dalam digester berputar pada kondisi alkali aktif 12%, rasio padatan terhadap cairan pemasak 1:5, suhu 165°C, waktu 3,5 jam. Selanjutnya, dilakukan pembuatan lembaran pulp rami. Pengamatan dilakukan terhadap persentase penyisihan lignin, bilangan Kappa, indek sobek, dan indeks retak. Hasil penelitian menunjukkan bahwa Marasmius sp. dengan aktivitas lakase 0,1638 U/mL merupakan yang terbaik dengan derajat penyisihan lignin 40,4%. Proses pemasakan rami dengan perlakuan Marasmius sp. menghasilkan pulp belum putih dengan bilangan Kappa lebih rendah 7,2% dibandingkan tanpa perlakuan jamur. Kualitas pulp yang telah diberi perlakuan jamur Marasmius sp. menghasilkan pulp belum putih yang lebih baik, dengan sifat fisik indeks retak dan indeks sobek berturut-turut 10,52 mNm 2 /g dan 1,24 kN/g.

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“…for 30 and 45 days, could be due to an increase in cellulose crystallinity as a result of selective fungal degradation of amorphous components. 29 Overall, 15 days of fungal incubation was sufficient to improve the nal hydrolysis yield of untreated pine by 22.6%.…”

Section: Effects Of Fungal and Organosolv Pretreatments On Pine Digesmentioning

confidence: 99%

Beneficial effects of Trametes versicolor pretreatment on saccharification and lignin enrichment of organosolv-pretreated pinewood

et al. 2017

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While previous studies have shown that white-rot fungal pretreatment reduces the severity of chemical pretreatments and improves enzymatic saccharification yields, very few have investigated the synergistic effects of fungal pretreatment combined with organosolv pretreatment on lignin recovery and quality. In this study, loblolly pine chips were incubated with Trametes versicolor for 15, 30 and 45 days, prior to organosolv pretreatment and enzymatic saccharification. Fungal pretreatment for 15 days improved the saccharification yield by 23%, and higher amounts (56%) of lignin-enriched fractions were obtained.Fungal pretreatment for 45 days led to extensive depolymerization, structural modification and enrichment of lignin in the organosolv precipitates (OP). Characterization of the OP fraction showed that samples pretreated for 30 and 45 days contained higher amounts of hydroxyl groups and phydroxyphenyl (H) subunits, and showed increases in depolymerization of carbohydrates as well as decreases in G/H lignin ratio. It became apparent that further investigations are needed to explore the benefits of combining fungal and organosolv pretreatments for improving lignin yields from softwoods.

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Evaluation of Biological Pretreatment of Rubberwood with White Rot Fungi for Enzymatic Hydrolysis

Cited by 85 publications

References 36 publications

Pretreatment of Marasmius sp. on Biopulping of Oil Palm Empty Fruit Bunches

Pretreatment of Marasmius sp. on Biopulping of Oil Palm Empty Fruit Bunches

PENGARUH APLIKASI JAMUR PELAPUK PUTIH PADA BIOPULPING RAMI (<i>Boehmeria nivea</i>) TERHADAP KUALITAS PULP BELUM PUTIH (<i>EFFECT OF WHITE ROT FUNGI APPLICATION IN BIOPULPING OF RAMIE (Boehmeria Nivea) ON THE QUALITY OF UNBLEACHED PULP</i>)

Beneficial effects of Trametes versicolor pretreatment on saccharification and lignin enrichment of organosolv-pretreated pinewood

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