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Field and laboratory experiments were conducted during the summers of 2001 and 2002 in two locations in Nova Scotia to identify the effect of cultivar, transplanting date, and drying (air-drying and freeze-drying) on basil (Ocimum basilicum `Mesten' and `Italian Broadleaf', and O. sanctum `Local') productivity and oil quality in Nova Scotia and to identify the potential of growing basil as a cash crop in this region. Results suggested that all of the tested cultivars of basil grown in Nova Scotia had acceptable yields and composition for the international commercial market. Greater yields (ranging from 3.6 to 19.8 t·ha-1) were achieved from `Mesten' and `Italian Broadleaf' by earlier transplanting. `Local' had a lower oil content compared to the other cultivars. Linalool was the main component of `Mesten' oil, linalool and methyl chavicol were the main components of `Italian Broadleaf' oil, while elemene and α-humulene were the main components of `Local' oil. Both air-drying and freeze-drying were found to alter the composition of the essential oil from O. sanctum and O. basilicum.

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( Farahani-Kofoet et al., 2014 ; Pyne et al., 2014 ). However, these accessions are different species from O. basilicum and breeding is limited by sexual incompatibility and F 1 hybrid sterility. The commercial cultivar Mrihani [ Ocimum sp. (Horizon Seed

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) wavelengths compared with plants grown under B wavelengths, whereas the concentration of chicoric acid, the second major phenolic acid in basil ( Ocimum basilicum ), was higher under B wavelengths than under R wavelengths ( Amaki et al., 2011 ; Shiga et al

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Culinary herbs are used globally as ingredients in cuisine and as therapeutic components in medications [ Cook and Samman, 1996 ; U.S. Department of Agriculture (USDA), 2011 ]. Herbs such as basil ( Ocimum basilicum ), dill ( Anethum graveolens

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Ocimum collection reported in this study. We also thank Antonio Figueira, Cena, São Paulo University, São Paulo, SP, Brazil for assistance with the RAPD protocol. This project was funded in part by the Brazilian Agricultural Research Corporation

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)], basil [ Ocimum basilicum ( Nguyen and Niemeyer, 2008 )], lettuce [ Lactuca sativa ( Coria-Cayupan et al., 2009 )], tomato [ Solanum lycopersicum ( Bénard et al., 2009 )], olive [ Olea europaea ( Fernandez-Escobar et al., 2006 )], and strawberry

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Essential oils were extracted from leaves, flowers, and stems of Ocimum basilicurn, O. kilimandscharicum, and O. micranthum by solvent extraction, hydrodistillation, and steam distillation for essential oil content and the oil analyzed by GC and GC/MS for composition. While the yield of essential oil was consistently higher from steam distillation than hydrodistillation, a similar number of compounds was recovered from both hydrodistillation and steam distillation. Though the relative concentration of the major constituents was similar by both methods, the absolute amounts were higher with steam distillation. Essential oil content and composition varied by plant species and plant part. Essential oil content was highest in flowers for O. basilicum and in leaves for O. micranthum. No significant differences were observed in essential oil yield and relative concentration of major constituents using fresh or dry samples and using samples from 75 g to 10 g of dry plant tissue. While minor differences between hydrodistillation and steam distillation were observed, both methods resulted in high yields and good recovery of essential oil constituents. Hydrodistillation is a more-rapid and simpler technique than steam and permits the extraction of essential oil where steam is not accessible.

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can also affect crop growth. For example, increasing EC from 0.5 to 0.9 or 1.2 dS⋅m −1 increased the fresh mass of lettuce ‘Batavia-Caipira’ and basil ( Ocimum basilicum cv. Emily), respectively, whereas further increases to 2 dS⋅m −1 decreased

Open Access