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Updated: Aug 29, 2026

Workflow Based on the Combination of Isotopic Tracer Experiments to Investigate Microbial Metabolism of Multiple Nutrient Sources
Published on: January 22, 2018
Effects of several variable factors on the isotope ratio by HRGC-MS
Masayoshi Sawamura1, Atsushi Satake, Takao Ueno
1Department of Bioresources Science, Faculty of Agriculture, Kochi University, Kochi, Japan. sawamura@cc.kochi-u.ac.jp
Abstract:
In the isotope ratio (Ir) analysis using GC-MS, several variable factors in sampling incidental to any food analysis were investigated for yuzu fruit. The Irs of ten monoterpene hydrocarbons in yuzu essential oils from each of six fruiting positions of three trees were measured. The sign test following t-test of all the Ir values demonstrated that there was no significant difference between both sampling years of 2001 and 2002. There was also no significant variation in the Ir values among the three trees and six fruiting positions in the individual two years.
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