Effect of plant maturity on oil composition of two mint varieties recently introduced to Sri Lanka.
1982
Peiris B.D. | Balasubramaniam S. | Jayawardana A.L. | Herath H.M.W.
Oil from two different varieties of mints designated Menthol variety (tentatively identified as Mentha arvensis var. piperascens) and Menthone variety (tentatively identified as F1 hybrid between Mentha arvensis var. piperascens and Mentha rotundifolia) harvested in three different stages of maturity were analysed by GLC for their chemical composition. The effect of age was more marked in the Menthol variety than in the Menthone variety. The amount of menthol in the Menthol variety was extremely low at two month stage and increased to its highest level at three month stage (blooming stage). This was almost equal to the decrease in the menthone content of the same variety during this period. In the Menthone variety there was hardly any difference in the content of menthone, but showed a slight increase in the content of menthol with the plant maturity.
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