Orris rhizomes precursors

Irone formation in ageing rhizomes has been described by Jaenicke al. in the early 1980 s. (lOJl) The objective of this study was to obtain a better understanding of the ageing mechanisms in orris and the development of an improved industrial pathway that could generate a maximum of the desirable irones. Accomplishing this objective required developing analytical methods to quantify the irones in lots of orris rhizomes and to also quantify potential irones present in the rhizomes as precursors. 

Method to Quantify Irones Precursors in Orris Rhizomes... 

Figure 6. HPLC of an Extract Orris Rhizomes Aged 4 Years. Note that even after a long ageing period, irone precursors are not completely transformed into...

For each lot of orris rhizomes, both the existing irones and the irones potentially present as a precursors have been quantified. The results obtained for dried Italian orris rhizomes aged from one to four years are listed in Table III. 

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