The Experts below are selected from a list of 372 Experts worldwide ranked by ideXlab platform
José S. Urieta - One of the best experts on this subject based on the ideXlab platform.
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Extraction of Volatile Oil from Aromatic Plants with Supercritical Carbon Dioxide: Experiments and Modeling
Molecules (Basel Switzerland), 2012Co-Authors: José Coelho, José S. Urieta, Ana F. Cristino, Patricia G. S. Matos, Amélia P. Rauter, Beatriz P. Nobre, Rui L. Mendes, João G. Barroso, Ana M. Mainar, João M. N. A. FareleiraAbstract:An overview of the studies carried out in our laboratories on supercritical fluid extraction (SFE) of volatile oils from seven aromatic plants: pennyroyal (Mentha pulegium L.), fennel seeds (Foeniculum vulgare Mill.), coriander (Coriandrum sativum L.), Savory (Satureja fruticosa Beguinot), Winter Savory (Satureja montana L.), cotton lavender (Santolina chamaecyparisus) and thyme (Thymus vulgaris), is presented. A flow apparatus with a 1 L extractor and two 0.27 L separators was built to perform studies at temperatures ranging from 298 to 353 K and pressures up to 30.0 MPa. The best compromise between yield and composition compared with hydrodistillation (HD) was achieved selecting the optimum experimental conditions of extraction and fractionation. The major differences between HD and SFE oils is the presence of a small percentage of cuticular waxes and the relative amount of thymoquinone, an oxygenated monoterpene with important biological properties, which is present in the oils from thyme and Winter Savory. On the other hand, the modeling of our data on supercritical extraction of volatile oil from pennyroyal is discussed using Sovova’s models. These models have been applied successfully to the other volatile oil extractions. Furthermore, other experimental studies involving supercritical CO2 carried out in our laboratories are also mentioned.
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Extraction of Volatile Oil from Aromatic Plants with Supercritical Carbon Dioxide: Experiments and Modeling
MDPI AG, 2012Co-Authors: Helena Sovová, José S. Urieta, Patricia G. S. Matos, Amélia P. Rauter, Beatriz P. Nobre, Rui L. Mendes, João G. Barroso, Ana M. Mainar, João M. N. A. Fareleira, Ana F. CristinoAbstract:An overview of the studies carried out in our laboratories on supercritical fluid extraction (SFE) of volatile oils from seven aromatic plants: pennyroyal (<em>Mentha pulegium </em>L.), fennel seeds (<em>Foeniculum vulgare </em>Mill.), coriander (<em>Coriandrum sativum </em>L.), Savory (<em>Satureja fruticosa Béguinot</em>), Winter Savory (<em>Satureja montana </em>L.), cotton lavender (<em>Santolina chamaecyparisus</em>) and thyme (<em>Thymus vulgaris</em>), is presented. A flow apparatus with a 1 L extractor and two 0.27 L separators was built to perform studies at temperatures ranging from 298 to 353 K and pressures up to 30.0 MPa. The best compromise between yield and composition compared with hydrodistillation (HD) was achieved selecting the optimum experimental conditions of extraction and fractionation. The major differences between HD and SFE oils is the presence of a small percentage of cuticular waxes and the relative amount of thymoquinone, an oxygenated monoterpene with important biological properties, which is present in the oils from thyme and Winter Savory. On the other hand, the modeling of our data on supercritical extraction of volatile oil from pennyroyal is discussed using Sovová’s models. These models have been applied successfully to the other volatile oil extractions. Furthermore, other experimental studies involving supercritical CO<sub>2</sub> carried out in our laboratories are also mentioned
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Herbicidal activity of volatiles from coriander, Winter Savory, cotton lavender, and thyme isolated by hydrodistillation and supercritical fluid extraction.
Journal of agricultural and food chemistry, 2010Co-Authors: Clara Grosso, José S. Urieta, José Coelho, António F. Palavra, José B. BarrosoAbstract:The volatiles from Coriandrum sativum L., Satureja montana L., Santolina chamaecyparissus L., and Thymus vulgaris L. were isolated by hydrodistillation (essential oil) and supercritical fluid extraction (volatile oil). Their effect on seed germination and root and shoot growth of the surviving seedlings of four crops (Zea mays L., Triticum durum L., Pisum sativum L., and Lactuca sativa L.) and two weeds (Portulaca oleracea L. and Vicia sativa L.) was investigated and compared with those of two synthetic herbicides, Agrocide and Prowl. The volatile oils of thyme and cotton lavender seemed to be promising alternatives to the synthetic herbicides because they were the least injurious to the crop species. The essential oil of Winter Savory, on the other hand, affected both crop and weeds and can be appropriate for uncultivated fields.
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Phytochemical profile and anticholinesterase and antimicrobial activities of supercritical versus conventional extracts of Satureja montana.
Journal of agricultural and food chemistry, 2009Co-Authors: Filipa V.m. Silva, Nuno R. Neng, José M.f. Nogueira, Clara Grosso, Alice Martins, Joana Salta, Delfina Mira, Natália Gaspar, Jorge Justino, José S. UrietaAbstract:Winter Savory Satureja montana is a medicinal herb used in traditional gastronomy for seasoning meats and salads. This study reports a comparison between conventional (hydrodistillation, HD, and Soxhlet extraction, SE) and alternative (supercritical fluid extraction, SFE) extraction methods to assess the best option to obtain bioactive compounds. Two different types of extracts were tested, the volatile (SFE-90 bar, second separator vs HD) and the nonvolatile fractions (SFE-250 bar, first and second separator vs SE). The inhibitory activity over acetyl- and butyrylcholinesterase by S. montana extracts was assessed as a potential indicator for the control of Alzheimer's disease. The supercritical nonvolatile fractions, which showed the highest content of (+)-catechin, chlorogenic, vanillic, and protocatechuic acids, also inhibited selectively and significantly butyrylcholinesterase, whereas the nonvolatile conventional extract did not affect this enzyme. Microbial susceptibility tests revealed the great potential of S. montana volatile supercritical fluid extract for the growth control and inactivation of Bacillus subtilis and Bacillus cereus, showing some activity against Botrytis spp. and Pyricularia oryzae. Although some studies were carried out on S. montana, the phytochemical analysis together with the biological properties, namely, the anticholinesterase and antimicrobial activities of the plant nonvolatile and volatile supercritical fluid extracts, are described herein for the first time.
Filippo Maggi - One of the best experts on this subject based on the ideXlab platform.
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comparison of chemical composition and antioxidant activities of two Winter Savory subspecies satureja montana subsp variegata and satureja montana subsp montana cultivated in northern italy
Natural Product Research, 2019Co-Authors: Giovanni Caprioli, Giulio Lupidi, Filippo MaggiAbstract:The Satureja L. genus belongs to the Lamiaceae family and comprises about 30 species commonly known as Savory. Savory is represented by aromatic plants which are used as spice, tea and food...
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Comparison of chemical composition and antioxidant activities of two Winter Savory subspecies (Satureja montana subsp. variegata and Satureja montana subsp. montana) cultivated in Northern Italy
2018Co-Authors: Giovanni Caprioli, Giulio Lupidi, Filippo MaggiAbstract:The Satureja L. genus belongs to the Lamiaceae family and comprises about 30 species commonly known as Savory. Savory is represented by aromatic plants which are used as spice, tea and food additive. In this study, we explored the differences in essential oil composition and antioxidant activity between two subspecies occurring in Italy, namely S. montana subsp. variegata and subsp. montana. Essential oils were analyzed by gas chromatography/mass spectrometry and the major volatile constituents were carvacrol (22.5%), p-cymene (17.6%), thymol (17,4%) in the subsp. variegata, and carvacrol (61.9%), p-cymene (9,9%) and γ-terpinene (8.2%) in the subsp. montana. The main chemical difference was the carvacrol:thymol ratio, with the latter much higher in the subsp. montana (above 300) compared with the subsp. variegata. The antioxidant activity was determined by using DPPH, ABTS and FRAP and essential oils displayed noteworthy radical scavenging effects against the ABTS radical (IC50 of 30.02-34.5 µg/ml).
Clara Grosso - One of the best experts on this subject based on the ideXlab platform.
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Herbicidal activity of volatiles from coriander, Winter Savory, cotton lavender, and thyme isolated by hydrodistillation and supercritical fluid extraction.
Journal of agricultural and food chemistry, 2010Co-Authors: Clara Grosso, José S. Urieta, José Coelho, António F. Palavra, José B. BarrosoAbstract:The volatiles from Coriandrum sativum L., Satureja montana L., Santolina chamaecyparissus L., and Thymus vulgaris L. were isolated by hydrodistillation (essential oil) and supercritical fluid extraction (volatile oil). Their effect on seed germination and root and shoot growth of the surviving seedlings of four crops (Zea mays L., Triticum durum L., Pisum sativum L., and Lactuca sativa L.) and two weeds (Portulaca oleracea L. and Vicia sativa L.) was investigated and compared with those of two synthetic herbicides, Agrocide and Prowl. The volatile oils of thyme and cotton lavender seemed to be promising alternatives to the synthetic herbicides because they were the least injurious to the crop species. The essential oil of Winter Savory, on the other hand, affected both crop and weeds and can be appropriate for uncultivated fields.
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Phytochemical profile and anticholinesterase and antimicrobial activities of supercritical versus conventional extracts of Satureja montana.
Journal of agricultural and food chemistry, 2009Co-Authors: Filipa V.m. Silva, Nuno R. Neng, José M.f. Nogueira, Clara Grosso, Alice Martins, Joana Salta, Delfina Mira, Natália Gaspar, Jorge Justino, José S. UrietaAbstract:Winter Savory Satureja montana is a medicinal herb used in traditional gastronomy for seasoning meats and salads. This study reports a comparison between conventional (hydrodistillation, HD, and Soxhlet extraction, SE) and alternative (supercritical fluid extraction, SFE) extraction methods to assess the best option to obtain bioactive compounds. Two different types of extracts were tested, the volatile (SFE-90 bar, second separator vs HD) and the nonvolatile fractions (SFE-250 bar, first and second separator vs SE). The inhibitory activity over acetyl- and butyrylcholinesterase by S. montana extracts was assessed as a potential indicator for the control of Alzheimer's disease. The supercritical nonvolatile fractions, which showed the highest content of (+)-catechin, chlorogenic, vanillic, and protocatechuic acids, also inhibited selectively and significantly butyrylcholinesterase, whereas the nonvolatile conventional extract did not affect this enzyme. Microbial susceptibility tests revealed the great potential of S. montana volatile supercritical fluid extract for the growth control and inactivation of Bacillus subtilis and Bacillus cereus, showing some activity against Botrytis spp. and Pyricularia oryzae. Although some studies were carried out on S. montana, the phytochemical analysis together with the biological properties, namely, the anticholinesterase and antimicrobial activities of the plant nonvolatile and volatile supercritical fluid extracts, are described herein for the first time.
Giovanni Caprioli - One of the best experts on this subject based on the ideXlab platform.
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comparison of chemical composition and antioxidant activities of two Winter Savory subspecies satureja montana subsp variegata and satureja montana subsp montana cultivated in northern italy
Natural Product Research, 2019Co-Authors: Giovanni Caprioli, Giulio Lupidi, Filippo MaggiAbstract:The Satureja L. genus belongs to the Lamiaceae family and comprises about 30 species commonly known as Savory. Savory is represented by aromatic plants which are used as spice, tea and food...
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Comparison of chemical composition and antioxidant activities of two Winter Savory subspecies (Satureja montana subsp. variegata and Satureja montana subsp. montana) cultivated in Northern Italy
2018Co-Authors: Giovanni Caprioli, Giulio Lupidi, Filippo MaggiAbstract:The Satureja L. genus belongs to the Lamiaceae family and comprises about 30 species commonly known as Savory. Savory is represented by aromatic plants which are used as spice, tea and food additive. In this study, we explored the differences in essential oil composition and antioxidant activity between two subspecies occurring in Italy, namely S. montana subsp. variegata and subsp. montana. Essential oils were analyzed by gas chromatography/mass spectrometry and the major volatile constituents were carvacrol (22.5%), p-cymene (17.6%), thymol (17,4%) in the subsp. variegata, and carvacrol (61.9%), p-cymene (9,9%) and γ-terpinene (8.2%) in the subsp. montana. The main chemical difference was the carvacrol:thymol ratio, with the latter much higher in the subsp. montana (above 300) compared with the subsp. variegata. The antioxidant activity was determined by using DPPH, ABTS and FRAP and essential oils displayed noteworthy radical scavenging effects against the ABTS radical (IC50 of 30.02-34.5 µg/ml).
Zoran Zeković - One of the best experts on this subject based on the ideXlab platform.
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Essential oil versus supercritical fluid extracts of Winter Savory (Satureja montana L.) - Assessment of the oxidative, microbiological and sensory quality of fresh pork sausages.
Food chemistry, 2019Co-Authors: Branislav Šojić, Zoran Zeković, Branimir Pavlić, Vladimir Tomović, Predrag Ikonić, Sunčica Kocić-tanackov, Saša Đurović, Snežana Škaljac, Marija Jokanović, Maja IvićAbstract:Abstract The effect of Winter Savory (Satureja montana L.) essential oil (SEO) and supercritical extracts (SE1; SE2) at concentrations of 0.075 and 0.150 µL/g on pH, lipid oxidation (TBARS), microbial growth and sensory quality of fresh pork sausages during storage were investigated. SEO, SE1 and SE2 improved oxidative and microbial stability of fresh pork sausages. The addition of SEO and SE1 at concentration of 0.150 µL/g affected the reduction of total Enterobacteriaeceae count to under 3 log cfu/g. Sausages produced with SE1 and SE2 had a higher scores for odor, flavor and overall acceptance compared to sausages treated with SEO and control sample. Therefore, the results of this paper revealed significant antioxidative and antimicrobial activity of SE1 and SE2, and consequently its high potential of utilization in processing of fresh pork sausages.
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Winter Savory: Supercritical carbon dioxide extraction and mathematical modeling of extraction process
The Journal of Supercritical Fluids, 2016Co-Authors: Jelena Vladić, Zoran Zeković, Strahinja Z. Kovačević, Stela Jokić, Sandra Svilović, Senka VidovićAbstract:Main objective of this work was to investigate the influence of pressure and temperature on supercritical carbon dioxide extraction of Satureja montana in terms of extraction yield and chemical composition. The most dominant compound in all investigated extracts was oxygenated monoterpene-carvacrol. The kinetics of the supercritical carbon dioxide extraction of S. montana as well as the solubility data were investigated by modelling the extraction curves using different empirical models and all models used showed similar deviation from experimental data. Hierarchical cluster analysis was employed in order to reveal possible similarities and dissimilarities among the extracts obtained at different extraction conditions.
