Bacteria are often maligned as the cause of human and animal diseases. Despite this characterisation, certain bacteria such as Acetobacter sp. and lactic acid bacteria were found to produce polysaccharides, function as antibiotics and find use as food additives (Sutherland, 2001). Over the past 20 years, a new class of microbial product – microbial polysaccharide – has been grown for industrial...

Nowadays, vinegar is industrially produced by mesophilic acetic acid bacteria (AAB). However, temperature fluctuation during acetous fermentation is inevitable, and may cause process disturbances. This can be mostly avoided using thermo-tolerant AAB. The main purpose of the present study was to isolate thermo-tolerant AAB. Fermentation performances were then evaluated. Twenty-eight different is...

Method for production and regeneration of Acetobacter pasterianus protoplasts is described. The protoplasts were obtained by treatment of cells with lysozyme in protoplast buffer at pH 8.0 with different osmotic stabilizers. The protoplasts were regenerated on Acetobacter medium with various osmotic stabilizers. Maximum protoplast formation was obtained in protoplast buffer with NaCl (0.5M) as ...

Nowadays, vinegar is industrially produced by mesophilic acetic acid bacteria (AAB). However, temperature fluctuation during acetous fermentation is inevitable, and may cause process disturbances. This can be mostly avoided using thermo-tolerant AAB. The main purpose of the present study was to isolate thermo-tolerant AAB. Fermentation performances were then evaluated. Twenty-eight different is...

Recently (1949) we recorded particulars of giant colonies of Acetobacter species which had been grown on a semi-solid medium. In such conditions certain species, e.g., A . aceti (Kiitzing) Beijerinck, form highly characteristic colonies. Other species, including the majority of the known species of Acetobacter, characterized by colonies of a particular type, can be classified in a number of gro...

Cellulose and sugar from microalgae can be utilized for the production of biofuel ethanol. Increasing cellulose and sugar synthesis capacity is key for high yield production of this biofuel. To enhance cellulose production, we transferred acsAB, responsible for cellulose synthesis in bacterium Acetobacter xylinum, into the cyanobacterium, Anabaena sp. strain PCC7120, by conjugation. PCR confirm...