Study on the effect of taurine on protease activity of Aspergillus oryzae

Germination rate,the number of spore,and protease of Aspergillus oryzae which taurine were added as enriching substance in medium were studied.The results indicated Aspergillus oryzae was promoted by a constant concentration of taurine.Aspergillus oryzae was cultivated in plate medium with addition of taurine 0.1% at 30 ℃ for5 h and the germination rate reached 95.12%,which was increased by 10.3% than that of blank group.Aspergillus oryzae was cultivated in fermentation medium with addition of taurine 0.1%,at 30 ℃ for 72 h and the spore and the protease reached one gram per 109 billion and 15548 U / g,respectively,which was increased by 60.3% and 38.8%than that of blank group.Adding taurine could improve the ability of enzyme,which provide a theoretical basis for taurine as functional factors.