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Characterization of the Essential Oil of a wild italian endemic sage: Salvia officinalis L. var. angustifolia Ten. (Labiatae)
No full textThe essential oil of an Italian wild type of sage classified as Salvia officinalis L. var. angustifolia Ten., was analyzed by GC/MS. Thirty-four components of the oil were identified, monoterpenes being the most abundant (about 70%). The oil, characterized by high content of α-thujone (39%) and considerable amounts of β-pinene, 1,8-cineole, β-caryophyllene and α-humulene showed a composition very similar to that of the commercially available Dalmatian sage oil confirming the ascribed sage classification
Studi su chemiotipi di Satureja montana (Labiatae) di provenienza centroappenninica (Abruzzo)
No full textCharacterization of Essential Oils from three Italian Ecotypes of Hyssop (Hyssop officinalis L. subsp. aristatus (Godron) Briq.)
No full textThree Italian strains of hyssop wildly grown in different natural habitats of the Abruzzi region (Central Italy) and classified as Hyssopus officinalis L. subsp. aristatiis, were characterized on the basis of their essential oil composition. The oils were obtained by steam distillation of the fresh aerial parts of the plants and analyzed by GC and GC/MS. Thirty-three compounds were identified. Relevant differences in the quantitative composition were observed among the oils so that the existence of three different chemotypes could be realized. In particular, one of the strains was characterized by high contents of myrtenol (32.6%) and β-pinene (19.3%), another contained β-pinene (24.7%) and 1,8-cineole (23.1%) as main components, while the third was very rich in methyl eugenol (43.9%) and limonene (15.9%). Whereas the latter two strains were similar in composition to oils from Spain and Montenegro, respectively, the former possessed a very unusual oil composition. © 61999 Allured Publishing Corp
Cucumber mosaic virus infecting Eupatorium cannabinum: effect on the quality of the essential oil
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Characterization of an Italian biotype of clary sage (Salvia sclarea L.) grown in a semi-arid Mediterranean environment
No full textAn Italian spontaneous biotype of clary sage (Salvia sclarea L.) was evaluated for its suitability to be cultivated in a semi-arid area and for the influence of these growth conditions on the essential oil composition. Seeds gathered from a spontaneous biotype were sown directly in the field, using a seeding density calculated to achieve a plant population of 7 plants/m2. Essential oils from the inflorescences and leaves of plants harvested at full flowering and early seed ripeness stages were obtained by steam distillation and characterized by GC and GC-MS. The plants showed a good tolerance to the semi-arid growth conditions, yielding more than 700 flowers/plant and about 21 g seeds/plant. Relevant qualitative and quantitative differences were detected between the essential oils from the inflorescences and leaves, the former being characterized by a high content of linalool (26-29%) and linalyl acetate (35-53%) and the latter only by sesquiterpenes, with germacrene D as the main compound (68-69%). Inflorescences at full flowering stage were richer in linalool, α-terpineol and germacrene D, showing a lower content in linalyl acetate in comparison with those collected at early seed ripeness. The development stage did not influence the oil composition of leaves
CHEMICAL AND BOTANICAL CHARACTERIZATION OF A ROSMARINUS OFFICINALIS L. BIOTYPE FROM SICILY
No full textRosemary (Rosmarinus officinalis L.) is widely cultivated all over the world as ornamental and aromatic plant. Today, the interest towards its cultivation is strongly arising, due to the many biological activities exerted by the essential oil extracted from its leaves and flowers. Which compounds confer to Rosemary's essential oil its properties is still unclear, but it seems likely that these effects must be attributed to a mixture of different principles, acting contemporarily and synergically. The diverse composition of the essential oils of Rosemary's ecotypes coming from different geographical areas could be the reason of their various level of activity. With the aim of obtaining further information about the characteristics of Rosemary native to the Mediterranean environments, a spontaneous biotype, collected near Villalba (CL - Sicily) has been characterized both from the morphological and chemical point of view. Both in wild and in field conditions, the plant showed a definite and uncommon prostrate growing habit. The high amount of 1,8-cineole (56,2 % v/w) found in the essential oil allowed to classify our chemotype as cineoliferum. All the other volatiles were found in amounts inside the limits reported by literature
Modifications over years of volatile compounds and agronomic features in a Sicilian Clary sage biotype.
No full textClary sage is a biennial native to Mediterranean area, spontaneous and often ubiquitous in many environments of inner Sicily. The large white-pinkish flowers are used, besides for ornamental purposes, for extracting a strongly-scented essential oil largely used by perfume industries. This work has been carried out with the aim to observe over several years the behaviour of a Sicilian Clary sage biotype, grown on experimental plots laid out in Sparacia (Cammarata - AG - Sicily). For this purpose seeds of Clary sage collected from a wild population growing in Pietraperzia (EN) were sown in experimental plots each year for seven consecutive years (from 1998 to 2005). Since Clary sage is a biennial, the observations on plants have been carried after each flowering time, i.e. after each second year from sowing. In this work the results of biometrical and chemical data collected on plants are shown. The plant has shown a strong aptitude to reflowering after each collection time, and the oil extracted from the flowers showed excellent quality characters. The oil extracted from the leaves had a composition quite different from that obtained from the flowers, being characterized by noticeable amounts of Germacrene-D. The qualitative characters of oil obtained from both flowers and leaves did not show a significant variability from year to year, and the crop seemed to react very well to the repeated cultivation for many consecutive years on the same site. This strong suitability, and the low labor cost required from its cultivation let foresee excellent perspectives for the introduction of the Clary sage in the Mediterranean cropping systems
Factors influencing anthocyanin content in red cabbage (Brassica oleracea varcapitata L f rubra (L) Thell)
No full textIn North and Central Italy an experiment was conducted for two consecutive years to optimise the anthocyanin yield of red cabbage. Two hybrids ('Roxy' and 'Gradur') were grown under a factorial combination of increasing rates of potassium sulphate (0, 50, 100kg K ha-1) and superphosphate (0, 39, 78kg P ha-1) applied before planting. Cabbages were transplanted at the beginning of August and harvested in winter. Anthocyanins were extracted from cabbage heads with HCl in methanol (1% v/v solution) and quantified by absorption spectrophotometry at 530 nm. Results showed that red cabbage can give high yields of anthocyanins (more than 90kgha-1) which are characterised by strong acylation and therefore, presumably, by good stability. However, differences over sites and years were marked. In the first year, yields in North Italy were reduced by a heavy infection of soft rot disease. The choice of variety, linked to a different anthocyanin content in the heads, appeared to be the major factor for a successful crop. P and K fertilisation had only a small influence. On clay soils in Central Italy the highest rates of both elements had a negative effect on the anthocyanin concentration in cabbage heads. © 2002 Society of Chemical Industry
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