UJI KEMAMPUAN ISOLAT AKTINOMISETES LOKAL ASAL SIAK DAN INDRAGIRI HILIR DALAM MENGHASILKAN ENZIM AMILASE

Abstract

Enzymes are one of the natural products that play an important role in various industrial applications, one of them is the amylase. Amylase is widely used in the industrial sector, including in the textile industry to prevent fiber dilation, to reduce viscosity in paper in the paper industry, and as artificial sweetener in food industries. This study aimed to analyze the ability of 22 actinomycetes isolates (16 isolates from the rhizosphere of Siak-siak plant (Dianella ensifolia L.) and six isolates from mangrove soil in Kuala Enok, Tanah Merah, Indragiri Hilir) in producing amylase enzymes by qualitative assay. Assay the ability of actinomycetes isolates in producing amylase used dotted method on the selective medium with starch as substrate. Based on the results, 14 isolates are capable of producing the enzyme amylase with the highest enzymatic index of 4.42 demonstrated by RK4 isolate.