1. Panjiar N, Sachan SG, Sachan A (2017) A multifunctional microbial metabolite. In: Kalia V (ed) Biosurfactants. Microbial applications, vol 2. Springer, Cham, pp 213–229
2. Sharma R, Lamsal BP, Mba-Wright M (2018) Performance of Bacillus subtilis on fibrous biomass sugar hydrolysates in producing biosurfactants and techno-economic comparison. In: Bioprocess and biosystems engineering. Springer, Cham
3. Colla LM, Costa JAV (2003) Obtenção e Aplicação de Biossurfactantes. Vetor, Rio Grande 13:85–103
4. Marchant R, Banat IM (2012) Microbial biosurfactants: challenges and opportunities for future exploitation. Trends Biotechnol 30(11):558–565
5. Levison MI (2009) Surfactant production: present realities and future perspectives. In: Zoller U (ed) Handbook of detergents, Part F: production, vol 142. CRC Press, Boca Raton, pp 1–38