Which of the following is an undesirable microbe in endogenic silage microorganism with simple sugar as the substrate?
(a) Homolactic
(b) Propionic acid bacteria
(c) Heterolactic
(d) Yeast
The question was posed to me in an online quiz.
My doubt is from Microbial Production of Fuels in section Bioleaching and Biomining for Recovery of Resources of Environmental Biotechnology