L K Sørensen

Summary

Affiliation: Steins Laboratorium
Country: Denmark

Publications

  1. ncbi request reprint Simultaneous determination of seven penicillins in muscle, liver and kidney tissues from cattle and pigs by a multiresidue high-performance liquid chromatographic method
    L K Sørensen
    Steins Laboratorium, Brørup, Denmark
    J Chromatogr B Biomed Sci Appl 734:307-18. 1999
  2. ncbi request reprint Determination of chloramphenicol in bovine milk by liquid chromatography/tandem mass spectrometry
    Lambert K Sørensen
    Steins Laboratorium, Ladelundvej 85, DK 6650 Brørup, Denmark
    J AOAC Int 86:703-6. 2003
  3. ncbi request reprint Accuracy of Fourier transform infrared spectrometry in determination of casein in dairy cows' milk
    Lambert K Sørensen
    Steins Laboratorium, Ladelundvej 85, 6650 Brørup, Denmark
    J Dairy Res 70:445-52. 2003
  4. ncbi request reprint Prediction of fermentation parameters in grass and corn silage by near infrared spectroscopy
    L K Sørensen
    Steins Laboratorium, Ladelundvej 85, 6650 Brørup, Denmark
    J Dairy Sci 87:3826-35. 2004
  5. ncbi request reprint Determination of mycotoxins in bovine milk by liquid chromatography tandem mass spectrometry
    L K Sørensen
    Steins Laboratorium, Ladelundvej 85, 6650 Brørup, Denmark
    J Chromatogr B Analyt Technol Biomed Life Sci 820:183-96. 2005
  6. ncbi request reprint Determination of phthalates in milk and milk products by liquid chromatography/tandem mass spectrometry
    Lambert K Sørensen
    Steins Laboratorium, Blomstervej 1, 8381 Tilst, Denmark
    Rapid Commun Mass Spectrom 20:1135-43. 2006
  7. ncbi request reprint A liquid chromatography/tandem mass spectrometric approach for the determination of gangliosides GD3 and GM3 in bovine milk and infant formulae
    Lambert K Sørensen
    Steins Laboratorium, Blomstervej 1, 8381 Tilst, Denmark
    Rapid Commun Mass Spectrom 20:3625-33. 2006
  8. ncbi request reprint Simultaneous determination of six penicillins in cows' raw milk by a multiresidue high-performance liquid chromatographic method
    L K Sørensen
    Steins Laboratorium, Brørup, Denmark
    J Chromatogr B Biomed Sci Appl 694:383-91. 1997
  9. ncbi request reprint Determination of cephalosporins in raw bovine milk by high-performance liquid chromatography
    L K Sørensen
    Steins Laboratorium, Brørup, Denmark
    J Chromatogr A 882:145-51. 2000

Detail Information

Publications9

  1. ncbi request reprint Simultaneous determination of seven penicillins in muscle, liver and kidney tissues from cattle and pigs by a multiresidue high-performance liquid chromatographic method
    L K Sørensen
    Steins Laboratorium, Brørup, Denmark
    J Chromatogr B Biomed Sci Appl 734:307-18. 1999
    ..3-20.9 microg/kg for dicloxacillin. The mean recovery range was 66-77% for amoxicillin, 73-75% for penicillin G, 81-82% for ampicillin, 73-76% for oxacillin, 74-75% for cloxacillin, 66-72% for nafcillin and 58-65% for dicloxacillin...
  2. ncbi request reprint Determination of chloramphenicol in bovine milk by liquid chromatography/tandem mass spectrometry
    Lambert K Sørensen
    Steins Laboratorium, Ladelundvej 85, DK 6650 Brørup, Denmark
    J AOAC Int 86:703-6. 2003
    ..03 microg/kg. The mean recovery was 90% at levels of 0.1-0.2 microg/kg. The relative repeatability standard deviations were 4.3, 3.8, and 2.8% at levels of 0.1, 0.2, and 1.0 microg/kg, respectively...
  3. ncbi request reprint Accuracy of Fourier transform infrared spectrometry in determination of casein in dairy cows' milk
    Lambert K Sørensen
    Steins Laboratorium, Ladelundvej 85, 6650 Brørup, Denmark
    J Dairy Res 70:445-52. 2003
    ..025%. The correlation between casein numbers obtained by reference analysis and infrared spectrometry could be expressed by an R2 of 0.73 and an SEP of 0.89 for casein numbers in the range 70.7-81.0...
  4. ncbi request reprint Prediction of fermentation parameters in grass and corn silage by near infrared spectroscopy
    L K Sørensen
    Steins Laboratorium, Ladelundvej 85, 6650 Brørup, Denmark
    J Dairy Sci 87:3826-35. 2004
    ..7, 1.9, 2.4, 2.9, and 4.0. The content of Lac was affected only slightly by drying at 80 degrees C, whereas the effects on NH(3) N and HAc were more pronounced, depending on silage type...
  5. ncbi request reprint Determination of mycotoxins in bovine milk by liquid chromatography tandem mass spectrometry
    L K Sørensen
    Steins Laboratorium, Ladelundvej 85, 6650 Brørup, Denmark
    J Chromatogr B Analyt Technol Biomed Life Sci 820:183-96. 2005
    ..The detection capabilities related to the transition products of lowest abundance were in the range 0.020-0.15 microg/l. The mean true recoveries were in the range 76-108% at levels of 0.2-10 microg/l...
  6. ncbi request reprint Determination of phthalates in milk and milk products by liquid chromatography/tandem mass spectrometry
    Lambert K Sørensen
    Steins Laboratorium, Blomstervej 1, 8381 Tilst, Denmark
    Rapid Commun Mass Spectrom 20:1135-43. 2006
    ..Two transition products were monitored for each compound. The detection limits related to the transition products of lowest abundance were in the range 5-9 microg/kg...
  7. ncbi request reprint A liquid chromatography/tandem mass spectrometric approach for the determination of gangliosides GD3 and GM3 in bovine milk and infant formulae
    Lambert K Sørensen
    Steins Laboratorium, Blomstervej 1, 8381 Tilst, Denmark
    Rapid Commun Mass Spectrom 20:3625-33. 2006
    ..A standard addition technique was applied for quantification. The relative repeatability standard deviations were less than 5% for GD3 (level 10 mg/L) and 14% for GM3 (level 0.1-0.2 mg/L)...
  8. ncbi request reprint Simultaneous determination of six penicillins in cows' raw milk by a multiresidue high-performance liquid chromatographic method
    L K Sørensen
    Steins Laboratorium, Brørup, Denmark
    J Chromatogr B Biomed Sci Appl 694:383-91. 1997
    ..The relative repeatability standard deviation was 4-9% on level 4-15 micro/l, respectively, 2-7% on level 30-40 microg/l...
  9. ncbi request reprint Determination of cephalosporins in raw bovine milk by high-performance liquid chromatography
    L K Sørensen
    Steins Laboratorium, Brørup, Denmark
    J Chromatogr A 882:145-51. 2000
    ..The mean recoveries were 86-88% for cefazolin, 91-93% for cefoperazone, 69-72% for cefquinome and 84-88% for ceftiofur in the concentration range 20-200 microg/kg...