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  • 1
    Electronic Resource
    Electronic Resource
    A rapid method for differentiation of dairy lactic acid bacteria by enzyme systems (1986)
    Springer
    Journal of industrial microbiology and biotechnology 1 (1986), S. 209-217 
    Details
    ISSN: 1476-5535
    Keywords: Lactic acid bacteria ; Lactobacilli ; Streptococcus ; Homofermentative bacteria ; Heterofermentative bacteria ; Leuconostoc ; Dairy microbiology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Summary A rapid and simple technique utilizing the APIZYM enzymatic patterns complemented with arginine dihydrolase and citratase was developed for species differentiation of 40 lactic acid bacteria relevant to the dairy industry.Streptococcus species in general produced no β-galactosidase, except forStreptococcus thermophilus. Lactobacillus species showed strong aminopeptidases and galactosidases but contained no arginine dihydrolase and citratase. Among the group N-streptococci,Streptococcus diacetylactis produced citratase, whereasStreptococcus cremoris differed by the production of butyrate esterase.Streptococcus faecalis was readily distinguishable fromStreptococcus lactis by butyrate esterase activity that was the basis of the differential agar developed. Heterofermentative lactobacilli differed from homofermentative lactobacilli in possessing arginine dihydrolase and citratase but by not producing leucine-aminopeptidase.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01569274
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    The effect of C677T mutation of methylene tetrahydrofolate reductase gene and plasma folate level on hyperhomocysteinemia in patients with meningomyelocele (2000)
    Springer
    Child's nervous system 16 (2000), S. 559-563 
    Details
    ISSN: 1433-0350
    Keywords: Keywords Meningomyelocele ; Methylenetetrahydrofolate reductase (MTHFR) ; Folate ; Homocysteine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  To evaluate the relationship between genotypes of methylene tetrahydrofolate reductase (MTHFR), and plasma folate and homocysteine (Hcy) levels in meningomyelocele, 21 Korean patients, 47 of their family members, and 43 healthy controls were recruited. The presence of C677T mutation in the MTHFR gene and plasma concentrations of folate/Hcy were investigated. The genotype frequency of C677T mutation was not higher in study groups (patients and family members). The plasma folate concentration showed no difference either between the study and the control groups or among MTHFR-genotypic groups. The plasma Hcy concentration in homozygotes in the study group was higher than that in the control group, and higher than that in heterozygotes when plasma folate levels were low (P=0.006). Although neither MTHFR genotype nor plasma folate/Hcy level plays a definite part on its own, they seem to have an additive effect on the occurrence of meningomyelocele. Our results support folate supplementation for the prevention of hyperhomo- cysteinemia and meningomyelocele.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/PL00007298
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    Paper (German National Licenses)
    Fulltext
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