Initiatives for Drafting JAS Proposals on Analytical Testing Methods for Specific Extractive Components in Dried Solid Japanese Cedar (Cryptomeria japonica)III.

Key Points

• Terpene concentrations ranged from 1.0 to 8.0 g/kg, indicating variability in testing methods.
• HorRat values showed acceptable reproducibility for low to medium concentration samples, confirming method reliability.
• Assessment through gas chromatography coupled with mass spectrometry revealed significant between-laboratory differences.
• Findings highlight the importance of standardizing testing methods for effective terpene analysis in cedar.

Abstract