Evaluasi Sifat Fisik Tepung Onggok-Urea-Zeolit yang Difermentasi Aspergillus niger (CASSABIO)
Lubis, Ahmad Darobin
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Onggok is solid waste from production of tapioca starch. This product contains high levels of starch and low crude protein. Cassava pulp can be used as feed for poultry by enriching the crude protein (CP). Onggok was added with 3% urea and 2.5% zeolite and was fermented by Aspergillus niger at 28-32 oC for six days. The product named cassabio. This research was aimed to evaluate physical characterstic, particle size, moisture content, pH, water activity and mash microstructure of cassabio compared with those of onggok. This research used t-test student with two treatments and four replications. The results of this research showed that the moisture, pH, Aw, specific density, bulk density, compacted bulk density, respone of angle of cassabio were significantly affect (P<0.05). Cassabio had lowest value for moisture, Aw and easy flow material than onggok. Difference existence of this physical properties indicated that every feedstuff had own specific character.