Method for growing acid-producing bacteria

Details Method for growing acid-producing bacteria Method for growing acid-producing bacteria

1990-07-27

1992-05-26

Lilling, Herbert J.

Chemistry: molecular biology and microbiology

Micro-organism, tissue cell culture or enzyme using process...

Process involving micro-organisms of different genera in the...

435139, 435244, 435245, 4352529, 4352534, 4352536, 435885, 426 36, 426 38, 426 39, 426 43, C12P 3900, C12P 138, A23C 912, C12R 146

Patent

active

051167379

ABSTRACT:
A method is disclosed for growth acid-producing bacterial cultures, such as diary cultures, wherein the culture is selected to contain a urease-producing strain of bacteria and the medium used for the culturing contains added urea. During culturing the urease hydrolyzes the urea to acid-neutralizing ammonia which limits the pH drop of the medium, thereby producing cultures of higher bacterial activity. The urea-containing culture media can also be employed with bacterial cultures which do not produce urease, providing urease is added to the culture medium during growth of the bacteria.

REFERENCES:
patent: 4675193 (1987-06-01), Boudreaux
patent: 4713341 (1987-12-01), Bily
patent: 4797289 (1989-01-01), Reddy
Tinson et al. "Austral. J. Dairy Tech" Mar. 1982, p. 14.
Thunell, "pH-Controlled Starter: A Decade Reviewed", Cultured Dairy Products Journal, Aug. 1988, pp. 10-16.
Suzuki, et al., Appl. Environ. Microb. 37:379-382 (1979).
Juillard, V., et al., Can. J. Microbiol., 34:818-822 (1988), with translation.

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