Effects of steam and alkali treatment on chemical composition and in vitro digestibility of oil palm trunks

Ismail Ab Rahman, . and Oshio S., . and Khoo K.C., . Effects of steam and alkali treatment on chemical composition and in vitro digestibility of oil palm trunks. pp. 335-340. ISSN 0126-6128

Oil palm trunks (OPT) were sawn into planks reduced to flakes and processed for use in feeding trials to bulls. The optimum size of flakes was found to be 2 cm with three different treatments for drying steaming and alkali treatments. Chemical analysis and in vitro dry matter digestibility were determined on the materials. Steam treatment decreased the neutral detergent fiber (NDF) content but did not cause considerable change in the acid detergent fiber (ADF) content. The acid detergent lignin (ADL) content was increased. The optimum dry matter digestibilites at steam pressures of 7.5 10 12.5 and 15.0 kg/cm were obtained at steaming times of 60 20 10 and 5 min. respectively. Treatment with sodium hydroxide also decreased the NDF content. The ADF content was only lowered at concentrations of NaOH greater than 6 percent. The ADL content was increased due to removal of carbohydrates. Disruption of the lignin-polysaccharide bonds led to a rise in the in vitro dry matter digestibility (IVADMD). The optimum digestibility was obtained by treatment with 9 percent NaOH for 14 days.

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Abstract

Oil palm trunks (OPT) were sawn into planks reduced to flakes and processed for use in feeding trials to bulls. The optimum size of flakes was found to be 2 cm with three different treatments for drying steaming and alkali treatments. Chemical analysis and in vitro dry matter digestibility were determined on the materials. Steam treatment decreased the neutral detergent fiber (NDF) content but did not cause considerable change in the acid detergent fiber (ADF) content. The acid detergent lignin (ADL) content was increased. The optimum dry matter digestibilites at steam pressures of 7.5 10 12.5 and 15.0 kg/cm were obtained at steaming times of 60 20 10 and 5 min. respectively. Treatment with sodium hydroxide also decreased the NDF content. The ADF content was only lowered at concentrations of NaOH greater than 6 percent. The ADL content was increased due to removal of carbohydrates. Disruption of the lignin-polysaccharide bonds led to a rise in the in vitro dry matter digestibility (IVADMD). The optimum digestibility was obtained by treatment with 9 percent NaOH for 14 days.

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Item Type:	Article
Additional Information:	2 graphs; 4 tables; 16 ref. Summary (En Ms)
AGROVOC Term:	ELAEIS GUINEENSIS
AGROVOC Term:	TALLO
AGROVOC Term:	PIENSOS
AGROVOC Term:	MALASIA/ DESMENUZAMIENTO
AGROVOC Term:	COMPOSICION QUIMICA
AGROVOC Term:	TRATAMIENTO ALCALINO
AGROVOC Term:	EXPERIMENTACION IN VITRO
AGROVOC Term:	DIGESTIBILIDAD
AGROVOC Term:	VAPORIZACION
Depositing User:	Ms. Norfaezah Khomsan
Last Modified:	24 Apr 2025 05:55
URI:	http://webagris.upm.edu.my/id/eprint/20203

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