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Comparison of Direct and Indirect Methods of Measuring the Precursors of Beta-Methyl-Gamma-Octalactone and Their Application to the Analysis of Sessile Oak Wood

Comparison of Direct and Indirect Methods of Measuring the Precursors of Beta-Methyl-Gamma-Octalactone and Their Application to the Analysis of Sessile Oak Wood

E Masson, R Baumes, J L Puech

J Chromatogr A. 2001 Jan 5;905(1-2):183-91.

PMID: 11206785

Abstract:

A new indirect method for measuring the level of beta-methyl-gamma-octalactone precursors in oak wood by GC-MS is described. This level is calculated from the difference between the amount of free beta-methyl-gamma-octalactone and the amount formed after hydrolysis and lactonization. It is compared to the level of a precursor of cis-beta-methyl-gamma-octalactone, a 6'-O-gallate derivative of (3S,4S)-4-[3-beta-glucopyranosyloxy-3-methyloctanoic acid, determined directly by HPLC. These two methods are applied to 12 powdered samples of Sessile oak wood and the results show that the 6'-O-gallate derivative of (3S,4S)-4-beta-D-glucopyranosyloxy-3-methyloctanoic acid is by far the most abundant precursor of beta-methyl-gamma-octalactone in this wood.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP104507	γ-Octalactone		104-50-7	Price

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