Koirala, N., Khanal, S., Chaudhary, S., Gautam, S., Sah, S.N., Subba, P., Marraiki, N. and Batiha, G.E.-S. 2021. Potential surface active agent production using very low grade and cheap substrate by Bacillus subtilis as microbial cell factory. Nepal Journal of Biotechnology. 9, 2 (Dec. 2021), 21–28.