Title:
METHOD FOR EXAMINING BIOLOGICAL SOLUTION
Document Type and Number:
WIPO Patent Application WO/2020/059401
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a method for examining a biological solution, the method enabling easy, accurate, yet also inexpensive implementation of quantitative examination of a variety of minerals and of methionine, which is an essential amino acid, contained in the biological solution. In the present invention, an X-ray fluorescence analysis device is used to measure the content ratio of a mineral contained in a subject-derived biological solution that can be collected by the subject, relative to methionine-derived sulfur contained in the biological solution. The measured content ratio and a calibration curve created by running X-ray fluorescence analysis using a standard solution of sulfur and the mineral are used to calculate the contained amount of sulfur and the mineral contained in the biological solution. The contained amount of methionine contained in the biological solution is calculated on the basis of the calculated contained amount of sulfur.
Inventors:
KOJIMA YOSHITANE (JP)
SHINODA SATOSHI (JP)
NISHIZAWA YOSHIKI (JP)
SHINODA SATOSHI (JP)
NISHIZAWA YOSHIKI (JP)
Application Number:
PCT/JP2019/032728
Publication Date:
March 26, 2020
Filing Date:
August 22, 2019
Export Citation:
Assignee:
KOJIMA YOSHITANE (JP)
International Classes:
G01N23/223; G01N33/84
Domestic Patent References:
| WO2014132383A1 | 2014-09-04 | |||
| WO2015060317A1 | 2015-04-30 |
Foreign References:
| JP2012098097A | 2012-05-24 | |||
| JP2013221866A | 2013-10-28 | |||
| JP2011107113A | 2011-06-02 |
Other References:
A. PINKERTON ET AL.: "Determination of Forms of Sulphur in Plant Material by X-Ray Fluorescence Spectrometry", X-RAY SPECTROMETRY, vol. 19, 1990, pages 63 - 65, XP055693449
OHTA, AKISHIGE: "12. Quantitative of sulfur-containing amino acids and proteins by a method of energy dispersive X-ray fluorescence analysis", ADVANCES IN X-RAY CHEMICAL ANALYSIS, JAPAN XIV, vol. 18, 30 April 1983 (1983-04-30), pages 105 - 118
OHTA, AKISHIGE: "12. Quantitative of sulfur-containing amino acids and proteins by a method of energy dispersive X-ray fluorescence analysis", ADVANCES IN X-RAY CHEMICAL ANALYSIS, JAPAN XIV, vol. 18, 30 April 1983 (1983-04-30), pages 105 - 118
Attorney, Agent or Firm:
IUCHI Ryuji et al. (JP)
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