The Experts below are selected from a list of 1116477 Experts worldwide ranked by ideXlab platform
Hassan Sereshti - One of the best experts on this subject based on the ideXlab platform.
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Use of gas chromatography-mass spectrometry combined with resolution methods to characterize the essential oil components of Iranian cumin and caraway.
Journal of chromatography. A, 2007Co-Authors: Mehdi Jalali-heravi, Behrooz Zekavat, Hassan SereshtiAbstract:Gas chromatography-mass spectrometry combined with iterative and non-iterative resolution methods was used to characterize the essential oil components of Iranian cumin and caraway. Orthogonal projection resolution (OPR) as a non-iterative and distance-selection-multivariate curve resolution-alternative least squares (DS-MCR-ALS) as an iterative method were used as auxiliary means to the analysis in the case of overlapping peaks. A total of 19 and 39 components were identified by direct similarity searches for cumin and caraway oils, respectively. These numbers were extended to 49 and 98 components, respectively with the help of chemometric techniques. Major constituents in cumin are Gamma-Terpinene (15.82%), 2-methyl-3-phenyl-propanal (32.27%) and myrtenal (11.64%) and in caraway are Gamma-Terpinene (24.40%), 2-methyl-3-phenyl-propanal (13.20%) and 2, 4(10)-thujadien (14.02%). In spite of different cultivation conditions, there are 28 components which are common between the two seeds.
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Use of gas chromatography–mass spectrometry combined with resolution methods to characterize the essential oil components of Iranian cumin and caraway
Journal of Chromatography A, 2007Co-Authors: Mehdi Jalali-heravi, Behrooz Zekavat, Hassan SereshtiAbstract:Gas chromatography-mass spectrometry combined with iterative and non-iterative resolution methods was used to characterize the essential oil components of Iranian cumin and caraway. Orthogonal projection resolution (OPR) as a non-iterative and distance-selection-multivariate curve resolution-alternative least squares (DS-MCR-ALS) as an iterative method were used as auxiliary means to the analysis in the case of overlapping peaks. A total of 19 and 39 components were identified by direct similarity searches for cumin and caraway oils, respectively. These numbers were extended to 49 and 98 components, respectively with the help of chemometric techniques. Major constituents in cumin are Gamma-Terpinene (15.82%), 2-methyl-3-phenyl-propanal (32.27%) and myrtenal (11.64%) and in caraway are Gamma-Terpinene (24.40%), 2-methyl-3-phenyl-propanal (13.20%) and 2, 4(10)-thujadien (14.02%). In spite of different cultivation conditions, there are 28 components which are common between the two seeds.
Atila Yanikoglu - One of the best experts on this subject based on the ideXlab platform.
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acaricidal activity of satureja thymbra l essential oil and its major components carvacrol and γ terpinene against adult hyalomma marginatum acari ixodidae
Veterinary Parasitology, 2010Co-Authors: Huseyin Cetin, J E Cilek, Emre Oz, Levent Aydin, Onder Deveci, Atila YanikogluAbstract:The acaricidal activity of a volatile essential oil hydrodistillate of Satureja thymbra L. (Lamiaceae) and its major constituents, carvacrol and Gamma-Terpinene, were evaluated against field-collected unfed adult Hyalomma marginatum. The distillate was tested against this tick species at 5, 10, 20, and 40 microL/L while the two major components were each tested at 10 microL/L. Generally, tick mortality to the S. thymbra distillate increased with concentration and exposure time. Ticks exposed to vapors from cotton wicks containing at least 40 microL/L resulted in complete (100%) mortality at 3h. The lower concentrations provided >or=90% mortality at 3h post treatment with complete mortality at 24h. Knockdown was observed only in the carvacrol and Gamma-Terpinene treatments. Ticks exposed to carvacrol-treated wicks produced >93% knockdown at 3h but at 24h approximately 57% were dead. The Gamma-Terpinene treatment produced >or=90% knockdown at 105 min through 3h but at 24h only about 87% of the ticks were dead.
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a comparative evaluation of origanum onites essential oil and its four major components as larvicides against the pine processionary moth thaumetopoea wilkinsoni tams
Pest Management Science, 2007Co-Authors: Huseyin Cetin, Fedai Erler, Atila YanikogluAbstract:The pine processionary moth (PPM), Thaumetopoea wilkinsoni Tams. (Lepidoptera: Thaumatopoeidae), is an important forest pest in the Mediterranean area, and urticating hairs of the caterpillars of this species cause allergic reactions on skin of humans and animals. In the present study, the larvicidal activities of Turkish oregano (Origanum onites L.) essential oil and its four major components, carvacrol, Gamma-Terpinene, terpinen-4-ol and thymol, were evaluated against fourth/fifth-instar larvae of PPM under laboratory conditions. The essential oil was larvicidal to PPM with an LD50 value of 3800 µL L−1 when 0.1 mL was applied per larva. Carvacrol was the most toxic component found in the essential oil (LD50 = 3100 µL L−1), followed by thymol (LD50 = 5500 µL L−1). The other two components, Gamma-Terpinene and terpinen-4-ol, were less effective. The results showed that Turkish oregano essential oil and its two components, carvacrol and thymol, could be potential alternatives to synthetic insecticides for the control of PPM. Copyright © 2007 Society of Chemical Industry
Mehdi Jalali-heravi - One of the best experts on this subject based on the ideXlab platform.
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Use of gas chromatography-mass spectrometry combined with resolution methods to characterize the essential oil components of Iranian cumin and caraway.
Journal of chromatography. A, 2007Co-Authors: Mehdi Jalali-heravi, Behrooz Zekavat, Hassan SereshtiAbstract:Gas chromatography-mass spectrometry combined with iterative and non-iterative resolution methods was used to characterize the essential oil components of Iranian cumin and caraway. Orthogonal projection resolution (OPR) as a non-iterative and distance-selection-multivariate curve resolution-alternative least squares (DS-MCR-ALS) as an iterative method were used as auxiliary means to the analysis in the case of overlapping peaks. A total of 19 and 39 components were identified by direct similarity searches for cumin and caraway oils, respectively. These numbers were extended to 49 and 98 components, respectively with the help of chemometric techniques. Major constituents in cumin are Gamma-Terpinene (15.82%), 2-methyl-3-phenyl-propanal (32.27%) and myrtenal (11.64%) and in caraway are Gamma-Terpinene (24.40%), 2-methyl-3-phenyl-propanal (13.20%) and 2, 4(10)-thujadien (14.02%). In spite of different cultivation conditions, there are 28 components which are common between the two seeds.
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Use of gas chromatography–mass spectrometry combined with resolution methods to characterize the essential oil components of Iranian cumin and caraway
Journal of Chromatography A, 2007Co-Authors: Mehdi Jalali-heravi, Behrooz Zekavat, Hassan SereshtiAbstract:Gas chromatography-mass spectrometry combined with iterative and non-iterative resolution methods was used to characterize the essential oil components of Iranian cumin and caraway. Orthogonal projection resolution (OPR) as a non-iterative and distance-selection-multivariate curve resolution-alternative least squares (DS-MCR-ALS) as an iterative method were used as auxiliary means to the analysis in the case of overlapping peaks. A total of 19 and 39 components were identified by direct similarity searches for cumin and caraway oils, respectively. These numbers were extended to 49 and 98 components, respectively with the help of chemometric techniques. Major constituents in cumin are Gamma-Terpinene (15.82%), 2-methyl-3-phenyl-propanal (32.27%) and myrtenal (11.64%) and in caraway are Gamma-Terpinene (24.40%), 2-methyl-3-phenyl-propanal (13.20%) and 2, 4(10)-thujadien (14.02%). In spite of different cultivation conditions, there are 28 components which are common between the two seeds.
Huseyin Cetin - One of the best experts on this subject based on the ideXlab platform.
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acaricidal activity of satureja thymbra l essential oil and its major components carvacrol and γ terpinene against adult hyalomma marginatum acari ixodidae
Veterinary Parasitology, 2010Co-Authors: Huseyin Cetin, J E Cilek, Emre Oz, Levent Aydin, Onder Deveci, Atila YanikogluAbstract:The acaricidal activity of a volatile essential oil hydrodistillate of Satureja thymbra L. (Lamiaceae) and its major constituents, carvacrol and Gamma-Terpinene, were evaluated against field-collected unfed adult Hyalomma marginatum. The distillate was tested against this tick species at 5, 10, 20, and 40 microL/L while the two major components were each tested at 10 microL/L. Generally, tick mortality to the S. thymbra distillate increased with concentration and exposure time. Ticks exposed to vapors from cotton wicks containing at least 40 microL/L resulted in complete (100%) mortality at 3h. The lower concentrations provided >or=90% mortality at 3h post treatment with complete mortality at 24h. Knockdown was observed only in the carvacrol and Gamma-Terpinene treatments. Ticks exposed to carvacrol-treated wicks produced >93% knockdown at 3h but at 24h approximately 57% were dead. The Gamma-Terpinene treatment produced >or=90% knockdown at 105 min through 3h but at 24h only about 87% of the ticks were dead.
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a comparative evaluation of origanum onites essential oil and its four major components as larvicides against the pine processionary moth thaumetopoea wilkinsoni tams
Pest Management Science, 2007Co-Authors: Huseyin Cetin, Fedai Erler, Atila YanikogluAbstract:The pine processionary moth (PPM), Thaumetopoea wilkinsoni Tams. (Lepidoptera: Thaumatopoeidae), is an important forest pest in the Mediterranean area, and urticating hairs of the caterpillars of this species cause allergic reactions on skin of humans and animals. In the present study, the larvicidal activities of Turkish oregano (Origanum onites L.) essential oil and its four major components, carvacrol, Gamma-Terpinene, terpinen-4-ol and thymol, were evaluated against fourth/fifth-instar larvae of PPM under laboratory conditions. The essential oil was larvicidal to PPM with an LD50 value of 3800 µL L−1 when 0.1 mL was applied per larva. Carvacrol was the most toxic component found in the essential oil (LD50 = 3100 µL L−1), followed by thymol (LD50 = 5500 µL L−1). The other two components, Gamma-Terpinene and terpinen-4-ol, were less effective. The results showed that Turkish oregano essential oil and its two components, carvacrol and thymol, could be potential alternatives to synthetic insecticides for the control of PPM. Copyright © 2007 Society of Chemical Industry
Behrooz Zekavat - One of the best experts on this subject based on the ideXlab platform.
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Use of gas chromatography-mass spectrometry combined with resolution methods to characterize the essential oil components of Iranian cumin and caraway.
Journal of chromatography. A, 2007Co-Authors: Mehdi Jalali-heravi, Behrooz Zekavat, Hassan SereshtiAbstract:Gas chromatography-mass spectrometry combined with iterative and non-iterative resolution methods was used to characterize the essential oil components of Iranian cumin and caraway. Orthogonal projection resolution (OPR) as a non-iterative and distance-selection-multivariate curve resolution-alternative least squares (DS-MCR-ALS) as an iterative method were used as auxiliary means to the analysis in the case of overlapping peaks. A total of 19 and 39 components were identified by direct similarity searches for cumin and caraway oils, respectively. These numbers were extended to 49 and 98 components, respectively with the help of chemometric techniques. Major constituents in cumin are Gamma-Terpinene (15.82%), 2-methyl-3-phenyl-propanal (32.27%) and myrtenal (11.64%) and in caraway are Gamma-Terpinene (24.40%), 2-methyl-3-phenyl-propanal (13.20%) and 2, 4(10)-thujadien (14.02%). In spite of different cultivation conditions, there are 28 components which are common between the two seeds.
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Use of gas chromatography–mass spectrometry combined with resolution methods to characterize the essential oil components of Iranian cumin and caraway
Journal of Chromatography A, 2007Co-Authors: Mehdi Jalali-heravi, Behrooz Zekavat, Hassan SereshtiAbstract:Gas chromatography-mass spectrometry combined with iterative and non-iterative resolution methods was used to characterize the essential oil components of Iranian cumin and caraway. Orthogonal projection resolution (OPR) as a non-iterative and distance-selection-multivariate curve resolution-alternative least squares (DS-MCR-ALS) as an iterative method were used as auxiliary means to the analysis in the case of overlapping peaks. A total of 19 and 39 components were identified by direct similarity searches for cumin and caraway oils, respectively. These numbers were extended to 49 and 98 components, respectively with the help of chemometric techniques. Major constituents in cumin are Gamma-Terpinene (15.82%), 2-methyl-3-phenyl-propanal (32.27%) and myrtenal (11.64%) and in caraway are Gamma-Terpinene (24.40%), 2-methyl-3-phenyl-propanal (13.20%) and 2, 4(10)-thujadien (14.02%). In spite of different cultivation conditions, there are 28 components which are common between the two seeds.
