Pengaruh Delignifikasi Menggunakan Phanerochaete chrysosporium dan Hidrolisis oleh Kapang Selulolitik terhadap Kualitas Tongkol Jagung sebagai Pakan Ternak

Abstract

Concorb was one of the agricultural waste that has potency for ruminant feed. Concorb has high fiber content, but it has limited application since its low digestibility and protein content. Lignin in corncob should be liberate from cellulose and hemicellulose in the fiber substances. This research used white-root fungus of Phanerochaete chrysosporium for delignification and fungi Aspergillus niger and Trichoderma viride for hydrolysis the delignified corncob to increase its digestibility as feed. Urea and ammonium sulphate were added to enrich the corncob during hydrolysis in solid-state cultivation. After 20 days of biodelignification, 17.76 % of lignin was removed. Cultivation of delignified corncob by cellulolytic fungi increased the total and reducing sugar contents. The best hydrolysis treatment obtained from T. viride enriched with ammonium sulphate while A. niger with urea. T. viride increased 14.11 % of dry matter and 13.76 % of organic matter digestibilities. A. niger increased 15.03 % of dry matter and 8.11 % of organic matter digestibilities. Increasing of oligosacaride content made hydrolized corncob as prebiotic for better feed quality. Mixing isolates between A. niger and T. viride hydrolysis is expected to give better results in next research.