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The increased industrialization and motorization has led to a steep rise for the demand of petroleum products. Petroleum based fuels are obtained from limited reserves. It is estimated that the known crude oil reserves could be depleted in less than 50 years at the present rate of consumption. Hence, it is necessary to look for alternative fuels. An entire branch of biotechnology, referred to as "white biotechnology," centers on the bio production of fuels and chemicals from renewable sources. About 90% of the current biofuel market is represented by biodiesel and bioethanol. Biodiesel is an...

Lactic acid bacteria (LAB) occur naturally in several raw materials like milk, meat and flour used to produce foods. Bacteriocin is proteinaceous antibacterial compounds, which constitute a heterologous subgroup of ribosomal synthesized antimicrobial peptides. Bacteriocin can be used as bio preservatives in fermented foods. The strains of lactic acid bacteria have also potential to act as a biopreservative or natural food preservative.