Some of the microbes useful in Biotechnology are:
1) Antibiotic Production: Bacillus subtilis, Bacillus polymyxa, Streptomyces griseus
2) Production of Alcohol: Saccharomyces cerevisiae, Aspergillus oryzae, Lactobacillus
3) Production of Vitamins: Pseudomonas denitrificans, Ashbya gossypii, Propionibacterium
4) Production of Soy sauce: Aspergillus oryzae
5) Production of Acetic Acid: Acetobacter aceti, Acetobacter woodii
6) Production of Single Cell Protein: Chlorella sorokiniana, Spirulina maxima
7) Production of Bread: Saccharomyces cerevisiae