Abstract:
Protease, the enzyme catalyze protein to be amino acid and olygo-peptide, can be applied for wastewater treatment process which contained high protein (milk) from coffee shop. Bacillus spp. are the most studied protease producer due to their high yield of protease. The objective of this study is to determine the protease production from Bacillus pumilus isolated from the northern-hotspring of Thailand by using the agricultural waste and optimizing the appropriated conditions from several parameters such as incubation time, pH, temperature, carbon and nitrogen sources. From this study, the results showed that maximum protease production (2.545 U/mL) was obtained in a medium containing 1% molasses, 1% rice bran at initial pH 8.0, after fermentation at 30 °C, 250 rpm for 24 hours. This can be implied that media composition using in protease production is one of the most effective factors. Molasses and rice bran are applied from agricultural waste, which still compose of the important nutrients that help microorganism growing and having a high yield protease production. In conclusion, It will help value-added products produced in industries. Protease have applied to wastewater treatment.