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Title: Bio-delignification of lignocarbohydrates residues of Cymbopogon martini with Phanerochaete chrysosporium
Authors: Dutt, Dharm
Garg, A P
Tyagi, C H
Upadhyay, A K
Keywords: Bio-delignification
Cymbopogon martini
Lignocarbohydrates residues
Phanerochaete chrysosporium
Issue Date: Jun-2007
Publisher: CSIR
IPC CodeD21C1/100
Abstract: Cymbopogon martini, palma rosa grass, is cultivated for important palma rosa oil. Lignocarbohydrates residue (LCR) of C. martini left after steam distillation could successfully be used for the production of chemical grade pulp. C. martini had low lignin and more open and looser structure, which makes it suitable for biopulping. Openness of pile, heterogeneity of tissues and vast exposed surface area favor growth and colonization of LCR of C. martini by a multitude of microorganisms. Phanerochaete chrysosporium was grown in solid-state culture on LCR of C. martini. The growth of fungus on wheat bran as source of hemicellulose shows good enzyme activity. Wheat bran, a cheaper substrate, shows its commercial viability. LCR had 13.6% lignin, 74.4% holocellulose and a pentosan fraction of 25.4%. After 28 days at 40 °C, P. chrysosporium produced a residue from LCR of C. martini with a higher in vitro dry matter digestibility. P. chrysosporium degraded 30.11 % of lignin, 62.25% of pentosan and 18.60% of holocellulose of the original value of LCR of C. martini.
Page(s): 483-489
ISSN: 0022-4456
Source:JSIR Vol.66(06) [June 2007]

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