Title:
METHOD FOR DETERMINING ORIGIN OF AMINO ACID
Document Type and Number:
WIPO Patent Application WO/2018/143226
Kind Code:
A1
Abstract:
The present invention relates to a method for determining the origin of glutamic acid in a sample, and more broadly relates to a method for determining the origin of an amino acid. The present invention makes possible a stable isotope comparison measurement that is considerably more reliable than the conventional method, by measuring the δ13C of glutamic acid (amino acid) by elemental analysis-stable isotope ratio mass spectrometry (EA-IRMS) and by measuring the δ15N of glutamic acid (amino acid) by gas chromatrography-stable isotope ratio mass spectrometry (GC-IRMS). The present invention also makes it possible to determine the origin of glutamic acid (amino acid) by comparing the stable isotope ratio of glutamic acid (amino acid) of known origin and the stable isotope ratio of glutamic acid (amino acid) of unknown origin.
Inventors:
TANAKA MASAHARU (JP)
YATSUKAWA YOICHI (JP)
KOBAYASHI KAZUHIRO (JP)
TANABE SOICHI (JP)
TANAKA MITSURU (JP)
YATSUKAWA YOICHI (JP)
KOBAYASHI KAZUHIRO (JP)
TANABE SOICHI (JP)
TANAKA MITSURU (JP)
Application Number:
PCT/JP2018/003082
Publication Date:
August 09, 2018
Filing Date:
January 31, 2018
Export Citation:
Assignee:
NISSIN FOODS HOLDINGS CO LTD (JP)
International Classes:
G01N27/62; G01N30/06; G01N30/72; G01N30/88
Foreign References:
| JP2010216892A | 2010-09-30 | |||
| US20070284523A1 | 2007-12-13 | |||
| JP2012251899A | 2012-12-20 | |||
| JP2010216892A | 2010-09-30 |
Other References:
PAOLINI, MAURO ET AL.: "Compound-Specific delta 15N and delta 13C Analyses of Amino Acids for Potential Discrimination between Organically and Conventionally Grown Wheat", JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY, vol. 63, no. 25, 1 July 2015 (2015-07-01), pages 5841 - 5850, XP055529512, ISSN: 0021-8561, Retrieved from the Internet
"GC/MS analysis of amino acids as pivaloyl/isopropylesters", RES. ORG. GEOCHEM., vol. 25, 2009, pages 61 - 79
"Compound-specific isotope analysis (CSIA) by gas chromatograph/isotope ratio mass spectrometer (GC/IRMS", RES. ORG. GEOCHEM., vol. 23/24, 2008, pages 99 - 122
"Quality control by wet chemical pre-treatment for precise compound-specific isotope analysis", RES. ORG. GEOCHEM., vol. 26, 2010, pages 81 - 93
See also references of EP 3578965A4
"GC/MS analysis of amino acids as pivaloyl/isopropylesters", RES. ORG. GEOCHEM., vol. 25, 2009, pages 61 - 79
"Compound-specific isotope analysis (CSIA) by gas chromatograph/isotope ratio mass spectrometer (GC/IRMS", RES. ORG. GEOCHEM., vol. 23/24, 2008, pages 99 - 122
"Quality control by wet chemical pre-treatment for precise compound-specific isotope analysis", RES. ORG. GEOCHEM., vol. 26, 2010, pages 81 - 93
See also references of EP 3578965A4
Attorney, Agent or Firm:
UENO, Hideki (JP)
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