Microbes in Human Welfare

• Lactobacillus, commonly called Lactic Acid Bacteria grow in milk and convert into curd
• The puffed up appearance of the dough is due to the production of CO2 gas during fermentation by bacteria

  dough is fermented using Bakers yeast, Saccharomyces cervisiae
• Toddy is a traditional drink of some parts of Southern India. It is made by fermenting sap from palm trees
• Cheese formed by the partial degradation of milk by different microorganisms
• Swiss cheese with large holes is produced by Propionibacterium shermanii , the holes are produced to to large production of CO2
• Roquefort cheese are ripened by growing a specific fungi, Penicillium roqueforti on it, which gives a particular flavor
• A variety of microbes are used to synthesise a number of products valuable to human beings in industries.
• Microbes especially yeasts have been used from time immemorial for the production of beverages like wine, beer, whiskey, brandy and rum — Saccharomyces cerevisiae is a yeast that is used in the production of bread and beer
• Sewage refers to the municipal wastewater generated everyday in cities and towns. Human excreta is the major component of it.
• before disposal sewage has to be treated in Sewage Treatment Plants in order to make it less polluting
• Primary treatment also known as physical treatment because it basically involves the physical removal of small and large, floating and suspended solids from sewage through filteration and sedimentation
• In primary treatment the supernatant forms the effluent
• Secondary treatment is also known as biological treatment because it involves the use of microbes or microbiota for the treatment of sewage
• BOD - Biochemical Oxygen Demand
• The energy derived from biofuels is called bioenergy
• Streptococcus thermophilus and Lactobacillus bulgaricus are used to make yogurt
• Swiss cheese- Propionibacterium shermanii
• Roquefort cheese - Penicillium roqueforti
• Camembert cheese- Penicillium camemberti
• Brewer‘s yeast- Saccharomyces cerevisiae