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  • 1
    Electronic Resource
    Electronic Resource
    Primers for Amplifying an Alanine Racemase Gene Fragment to Detect E. coli Strains in Foods (1999)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 64 (1999), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Specific oligonucleotide primers for detecting Escherichia coli in various foods were designed based upon the conserved sequences of the E. coli air gene from positions 322 to 345 and from 664 to 687. Bacteria and food samples were treated at 100°C for 10 min in 1% Tween 20 containing 5% NaCl and 1 mM EDTA, then used as templates for polymerase chain reaction (PCR). The oligonucleotide primers were specific to E. coli, except for Shigella species, when tested with 67 strains of E. coli, including such serotypes as O157:H7 and O111, and 32 strains of non-E. coli species. The oligonucleotide primers could prove useful for detecting E. coli in beef, chicken, pork, tomato, soybean, potato, cow's milk, and egg.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1999.tb15087.x
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Synthesis of l-proline from the racemate by coupling of enzymatic enantiospecific oxidation and chemical non-enantiospecific reducation
    Amsterdam : Elsevier
    Journal of Fermentation and Bioengineering 74 (1992), S. 189-190 
    Details
    ISSN: 0922-338X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0922-338X(92)90082-6
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Lipid composition of a freeze-tolerant yeast, Torulaspora delbureckii, and its freeze-sensitive mutant (1995)
    Springer
    Applied microbiology and biotechnology 44 (1995), S. 167-171 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract We analyzed the lipid compositions of a freeze-tolerant strain of yeast Torulaspora delbrueckii D2-4 and its freeze-sensitive mutant 60B3 to clarify the relationship between the lipid composition and freeze tolerance of yeast. The total lipid content of D2-4 was similar to that of 60B3, whereas the content of phospholipids and neutral lipids was different from those of 60B3. The molar ratio of sterol to phospholipid in D2-4 was 60% of that in 60B3. The analysis of lipid components indicated that D2-4 contained larger amounts of phosphatidylethanolamine, phosphatidylcholine, and phosphatidylinositol, but smaller amounts of triglyceride as compared to 60B3. These results suggest that the plasma membrane of freeze-tolerant strain D2-4 may have a higher fluidity than that of freeze-sensitive strain 60B3.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00164497
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Lipid composition of a freeze-tolerant yeast, Torulaspora delbureckii, and its freeze-sensitive mutant (1995)
    Springer
    Applied microbiology and biotechnology 44 (1995), S. 167-171 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract  We analyzed the lipid compositions of a freeze-tolerant strain of yeast Torulaspora delbrueckii D2-4 and its freeze-sensitive mutant 60B3 to clarify the relationship between the lipid composition and freeze tolerance of yeast. The total lipid content of D2-4 was similar to that of 60B3, whereas the content of phospholipids and neutral lipids was different from those of 60B3. The molar ratio of sterol to phospholipid in D2-4 was 60% of that in 60B3. The analysis of lipid components indicated that D2-4 contained larger amounts of phosphatidylethanolamine, phosphatidylcholine, and phosphatidylinositol, but smaller amounts of triglyceride as compared to 60B3. These results suggest that the plasma membrane of freeze-tolerant strain D2-4 may have a higher fluidity than that of freeze-sensitive strain 60B3.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002530050536
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Enantioselective synthesis of N-acetyl-L-methionine with aminoacylase in organic solvent (1994)
    Springer
    Applied microbiology and biotechnology 42 (1994), S. 287-289 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract  We have developed an enzymatic procedure for the enantiospecific synthesis of N-acetyl-L-methionine with aminoacylase in an organic solvent. N-Acetyl-L-methionine was most effectively synthesized with a yield of about 90% (on the basis of the L-methionine used) when the reaction mixture, composed of 100 mM sodium acetate, 20 mM D L-methionine and aminoacylase (1000 units) immobilized on celite in 1 ml ethyl acetate saturated with 32 μ l 40 mM sodium phosphate buffer (pH 7.0) containing 0.1 mM CoCl2, was incubated at 30°C for 24 h. N-Acetyl-L-methionine was isolated from the reaction mixture and the enantiomeric excess was 100%. D-Methionine was also isolated from the mixture with a yield of about 95% and 90% enantiomeric excess. The method is applicable to the synthesis of other N-acetyl-L-amino acids.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002530050251
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  • 6
    Electronic Resource
    Electronic Resource
    Enantioselective synthesis ofN-acetyl-l-methionine with aminoacylase in organic solvent (1994)
    Springer
    Applied microbiology and biotechnology 42 (1994), S. 287-289 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract We have developed an enzymatic procedure for the enantiospecific synthesis ofN-acetyl-l-methionine with aminoacylase in an organic solvent.N-Acetyl-l-methionine was most effectively synthesized with a yield of about 90% (on the basis of thel-methionine used) when the reaction mixture, composed of 100 mm sodium acetate, 20 MMdl-methionine and aminoacylase (1000 units) immobilized on celite in 1 ml ethyl acetate saturated with 32 μl 140mm sodium phosphate buffer (pH 7.0) containing 0.1 mm CoCl2, was incubated at 30°C for 24 h.N-Acetyl-l-methionine was isolated from the reaction mixture and the enantiomeric excess was 100%.d-Methionine was also isolated from the mixture with a yield of about 95% and 90% enantiomeric excess. The method is applicable to the synthesis of otherN-acetyl-l-amino acids.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00902730
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    Paper (German National Licenses)
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