Characterization of oil-palm trunk residue degradation enzymes from the isolated fungus, Penicillum rolfsii

Description

Oil palm (Elaeis guineensis) used in palm oil production must be replanted at 20 to 25-year intervals in order to maintain oil productivity. Consequently, the felled palm trunks represent one of the most important biomass resources in Malaysia and Indonesia. Oil-palm trunk biomass consists of a complex network of cellulose, hemicellulose, and lignin, the major constituents of which are celluloses and hemicelluloses.

 To utilize the felled palm trunks specifically for bioethanol and bioplastic production, and to exhibit the advantages of hydrolysis compared to using commercial enzymes, we characterized the crude ligno-cellulolytic enzyme of the fungal isolate P. rolfsii c3-2(1) IBRL utilizing oil-palm trunk residues.

 We were able to show that the mesophilic fungus P. rolfsii c3-2(1) IBRL produces high activity enzymes (P. rolfsii) including xylanase, laminarinase, and arabinase. P. rolfsii displayed higher thermal stability compared with commercial enzymes, Celluclast 1.5 L and Acellerase 1500 (Fig.1). The effects of isolated lignin residual on biomass saccharification revealed that P. rolfsii possesses weak ‘lignin-binding’ enzymes that may contribute to their higher hydrolysis efficiency on oil-palm trunk residues (Fig. 2). The hydrolysis efficiency of P. rolfsii is 1- to 1.5-fold higher than that of commercial enzymes following 48–72 h of biomass saccharification (Fig. 3). These findings suggest that P. rolfsii c3-2(1) IBRL is a fungal strain isolate that can potentially be used as a microbial factory for ligno-cellulolytic enzyme production. Furthermore, P. rolfsii c3-2(1) IBRL may represent an alternative for biomass utilization, such as oil-palm trunk residues. The high performance of ligno-cellulolytic enzymes produced by P. rolfsii c3-2(1) IBRL deserves significant attention as an alternative to other commercial enzymes for the production of second-generation biofuels and bioplastic.

Figure, table

  1. Fig. 1. Residual activity expressed as a percentage of the maximum oil-palm trunk residue activity by P. rolfsii c3-2(1)

    Fig. 1. Residual activity expressed as a percentage of the maximum oil-palm trunk residue activity by P. rolfsii c3-2(1)

  2. Fig 2. Absorption of P. rolfsii c3-2(1) IBRL enzymes and commercial enzymes on Klason lignin residues after 1.5 h at 4°C

    Fig 2. Absorption of P. rolfsii c3-2(1) IBRL enzymes and commercial enzymes on Klason lignin residues after 1.5 h at 4°C

  3. ig. 3. Time course for the hydrolysis of oil-palm trunk residues using P. rolfsii c3-2(1) IBRL enzyme and commercial enzymes based on the hydrolysis of total sugar conversion (%)

    Fig. 3. Time course for the hydrolysis of oil-palm trunk residues using P. rolfsii c3-2(1) IBRL enzyme and commercial enzymes based on the hydrolysis of total sugar conversion (%)

Affiliation

Japan International Research Center for Agricultural Sciences Biological Resources and Post-harvest Division

Classification

Administration B

Research project

Development of biofuel and biomaterial production technologies using biomass resources in Southeast Asia

Program name

Rural Livelihood Improvement

Term of research

FY2015(FY2011-FY2015)

Responsible researcher

Arai Takamitsu ( Biological Resources and Post-harvest Division )

MIERUKA ID: 001768

Murata Yoshinori ( Biological Resources and Post-harvest Division )

KAKEN Researcher No.: 40322664
MIERUKA ID: 001773

Kosugi Akihiko ( Biological Resources and Post-harvest Division )

KAKEN Researcher No.: 70425544
MIERUKA ID: 001772

Lee Kok Chang ( Universiti Sains Malaysia )

Darah Ibrahim ( Universiti Sains Malaysia )

ほか
Publication, etc.

Chang LK et al. (2015) Environmental Technology

https://doi.org/DOI:10.1080/09593330.2015.1120786

Japanese PDF

2015_C09_A4_ja.pdf383.76 KB

2015_C09_A3_ja.pdf193.81 KB

English PDF

2015_C09_A4_en.pdf152.2 KB

2015_C09_A3_en.pdf94.31 KB

Poster PDF

2015_C09_poster.pdf298.26 KB