LAUSR

Amylase produced by bacteria or bacteria amylase is an enzyme that can hydrolyze starch to sugar. Amylase is important due to their commercial applications in starch liquefaction, paper, textile fabrics, brewing industry, sugar induction by the production of sugar syrups, pharmaceuticals, and preparing cold water dispersible laundry. Amylase production by Bacillus licheniformis strain MGI that had been isolated from Pariangan hot spring, Tanah Datar district, West Sumatera, Indonesia is still low.The purpose of this study was to increase the production of amylase from Bacillus licheniformis strain MGI.The methods used in this study is to optimize medium of amylase production by Bacillus lichenformis strain MGI such as inoculum size, nitrogen sources, and substrates. Amylase produced by Bacillus licheniformis strain MGI increases with the concentration of inoculum 10%, urea as nitrogen sources, and wheat as a substrate. Amylases produced by Bacillus licheniformis MGI strains can be used in various industries that use starch as its base material.