ISHS Acta Horticulturae 569: I Latin-American Symposium on the Production of Medicinal, Aromatic and Condiments Plants
DRYING TEMPERATURE EFFECTS IN ROSEMARY ESSENTIAL OIL CONTENT AND COMPOSITION |
| Authors: | M.C.S.G. Blanco, L.C. Ming, M.O.M. Marques, O.A. Bovi |
| Keywords: | Rosmarinus officinalis L.; essential oils yield, drying temperatures, post harvesting |
| Abstract:
Studies were conducted to show the effect of different temperatures in the drying process on the amount and quality of essential oils of rosemary (Rosmarinus officinalis L.) The rosemary twigs were harvested in the Demeter Farmer, Botucatu, SP, Brazil in december, 1997. The twigs were dried at 40oC, 60oC and 80oC, until establishment of the weights. The leaf essential oil was extracted by destilation in Clevenger apparatus and analysed by GC-MS. Higher drying temperature decreased the essential oil content (% w/w), from 2,13% (40oC) to 1,62% (60oC) and 1,09% (80oC). Essential oil composition was similar, except for camphor in the 40oC and 60oC treatments. However, there were decreasing in concentrations of, α-pinene, β-myrcene and camphor, when comparing essential oil composition from the 40oC and 80oC treatments. | |
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