Lactose hydrolysis by mutant streptococcus thermophilus

Details Lactose hydrolysis by mutant streptococcus thermophilus Lactose hydrolysis by mutant streptococcus thermophilus

1990-04-23

1991-12-10

Lilling, Herbert J.

Chemistry: molecular biology and microbiology

Micro-organism, per se ; compositions thereof; proces of...

Bacteria or actinomycetales; media therefor

435 99, 4352523, 435885, C12R 146, C12P 1914

Patent

active

050717634

ABSTRACT:
Mutant strains of Streptococcus thermophilus having defective lactose transport systems having a phenotype gluS.sup.31, lacS.sup.-, sucS.sup.+ and .beta.gal.sup.+ are effective for use in processes where the hydrolysis of lactose is sought. Thermostability of these strains as well as the .beta.-galactosidase produced allows lactose hydrolysis prior to and during pasteurization. These organisms provide the food industry with improved methods of making reduced lactose dairy products.

REFERENCES:
Derwent Biochem Abs 86-08756 Herman et al., J. Dairy Sci (1986) 69 #Suppl. 1, 69D59.
Derwent Biochem Abs 84-08991 Thomas et al., Appl. Environ. Microbiol. (1984), 48, 1, 186-91.
Derwent Biochem Abs. 89-10297 Mercenier et al., Abs. Annu. Am. Soc. Microbiol. (1989), 89 Meet. 310.
Derwent Biochem. Abs. 90-06366 Beal et al., Appl. Microbiol. Biotech. (1989), 32, 2, 148-54.
Derwent WPIL Abs. 89-194499/27 Kobayashi et al., EP-323201 (7-1989).
Derwent WPIL Abs. 82-00768E/01 Mitsubishi Chem. J56154991 (11-1981).
Derwent Biotech Abs. 81-154991 Fukuda J56154991 (11-1981).

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