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Lavandula ×intermedia Emeric ex Loisel. - syn.Lavandula ×burnatii Briq. - Lamiaceae
lavandin, Dutch lavender, Spiklavendel
„Lavandin, Lavandula × intermedia (also known as Dutch lavender), yields a similar essential oil, but with higher levels of terpenes including camphor, which add a sharper overtone to the fragrance.“
http://en.wikipedia.org/wiki/Lavandula
„This study compared agronomic traits and essential oil quantity and quality of 10 cultivars of certified organically-grown lavender (Lavandula spp). Results reported are based on the second year of production and is the first report of organically certified lavender oils. Lavandin cultivars (Lavandula x intermedia Emeric ex Loisel.) produced significantly higher oil yield (7.1–9.9% dry inflorescences) compared to six lavender cultivars (2.8–5.0% dry inflorescences), with cultivars ‘Grosso,’ ‘Abriallii’ and ‘Super’ yielding the highest (9.9%, 9.0%, and 8.7%, respectively). Lavender (Lavandula angustifolia Mill.) ‘Grey Lady’ produced the highest oil yield (5.0%), and ‘Lady’ the least (2.8%). All lavandins produced acceptable flowers for the dried market except ‘Provence’ whose flower color was pale purple. Lavender flowers from ‘Hidcote,’ ‘Munstead’ and ‘English’ were acceptable for the dried floral market. By year two, lavender cultivars reached full bloom and could be harvested for oil prior to the lavandins. Lavandin ‘Grosso’ oil possessed the highest camphor (8.1 as relative % of total oil). Enantiomeric distribution of (R)-(-) and (S)-(+) forms of linalool and linalyl acetate were found to be useful indicators of the purity of lavender oils.“
[Essential oil quantity and composition from 10 cultivars of organically grown lavender and lavandin., Renaud, E. N., Charles, D. J., Simon, J. E., Journal of Essential Oil Research, Vol.13(4), 2001, 269-273]
„In Turkey, Isparta province is known as valley of oil rose (Rosa damascena Mill.) and lavandin (Lavandula × intermedia Emeric ex Loisel. var. Super). This work aimed to assess the influence of the harvest time and drying temperature on the essential oil content and composition in lavandin which was harvested in four different dates (8, 15, 22 and 29 July 2005) and dried at four different temperature (30, 40, 50 and 60°C). The flower essential oil was extracted by distillation in Clevenger apparatus, and constituent concentrates were analyzed on a gas chromatography-mass spectrometry. The oils were obtained from the dry inflorescences without stem. The two major components of the essential oil were linalool and linalyl acetate. Harvest time influenced the final content of essential oil. Essential oil content decreased from the first harvest (8.25%) to the last harvest (7.30%). The highest linalool content (43.65%) was at the middle of the flowering season, and the highest linalyl acetate content (25.96%) was at the end of the flowering season. Essential oil composition was also importantly influenced by the oven-drying temperature. 75.7% of essential oil was lost during oven drying at 60°C compared to drying at 30°C. There was decreasing in concentrations of linalool (from 42.91 to 34.13%), and increasing in concentrations of linalyl acetate (26.11 to 32.55%), when comparing essential oil composition from 30°C to 60°C treatments.“
[Effects of harvest time and drying on essential oil properties in lavandin (Lavandula× intermedia Emeric ex Loisel.)., Baydar, H., Erbaş, S., In I International Medicinal and Aromatic Plants Conference on Culinary Herbs 826, 2007, 377-382)]