METHOD FOR IDENTIFYING THE OAK SPECIES OF AN OAK WOOD SAMPLE

摘要

The invention concerns a method for identifying the oak species including the following steps of: Providing an oak wood sample; Preparing said sample; Performing at least one analysis on the wood sample so as: to identify: from one to three molecules belonging to a 1st category of molecules defined by the derivatives of oleanane-type triterpenes which derive from an aglycone of empirical formula C30H48O6, from one to three molecules belonging to a 2nd category of molecules defined by the derivatives of oleanane-type triterpenes which derive from an aglycone of empirical formula C30H46O7, as well as derivatives of oleanane-type triterpenes which derive from an aglycone of empirical formula C30H46O8, then to determine the concentration of the identified molecules; Determining a ratio R; Identifying the oak species.

主权项

1. A method for identifying the oak species of an oak wood sample, comprises at least the following steps of:
a) Providing an oak wood sample; b) Preparing the oak wood sample in a suitable manner for an analysis for determining the concentration of derivatives of oleanane-type triterpenes which are present in said oak wood sample; c) Performing at least one analysis on the thus prepared oak wood sample at step b) so as:
to identify:
i. from one to three molecules belonging to a 1st category of molecules, said one to three molecules being among the three most abundant molecules of all the molecules of said 1st category of molecules present in said oak wood sample, said 1st category of molecules being defined by all derivatives of oleanane-type triterpenes which derive from an aglycone of empirical formula C30H48O6,ii. from one to three molecules belonging to a 2nd category of molecules, said one to three molecules being among the three most abundant molecules of all the molecules of said 2nd category of molecules present in said oak wood sample, said 2nd category of molecules being defined by all derivatives of oleanane-type triterpenes which derive from an aglycone of empirical formula C30H46O7, as well as derivatives of oleanane-type triterpenes which derive from an aglycone of empirical formula C30H46O8, then,to determine the concentration:
of each of said one to three molecules of the 1st category of molecules which have been identified;of each of said one to three molecules of the 2nd category of molecules which have been identified; d) Determining a ratio R, said ratio R corresponding to the ratio of the concentration or the sum of the concentrations of at least one of said one to three molecules of the 1st category of molecules which have been identified, to the concentration or the sum of the concentrations of at least one of said one to three molecules of the 2nd category of molecules which have been identified; e) Identifying the species of the oak wood sample according to the value of the ratio R determined at step d) in the following manner:
If the ratio R is lower than 0.316, then the oak wood sample belongs to the pedunculate species,If the ratio R is higher than 3.162, then the oak wood sample belongs to the sessile species.