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Tsutomu Hirose - One of the best experts on this subject based on the ideXlab platform.
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Combination of supercritical CO2 and vacuum distillation for the fractionation of Bergamot Oil.
Journal of Agricultural and Food Chemistry, 2004Co-Authors: Tao Fang, Motonobu Goto, Mitsuru Sasaki, Tsutomu HiroseAbstract:Supercritical CO2 can be used to separate oxygenated compounds from essential Oils. This technique still cannot replace vacuum distillation as an industrial process because of low recoveries and inconsistent results. In the present work, a comparison between the two methods was made in terms of composition, recovery, and color. Vacuum distillation and supercritical CO2 are complementary processes for producing high quality oxygenated compounds with high recovery rates. The former is more suitable for removing monoterpenes at low fraction temperatures (≤308 K), and the latter is more suitable for separating oxygenated compounds from pigments and waxes. Consequently, the two methods were combined. For supercritical CO2 fractionation, the parameters of pressure, temperature gradient, and the ratio of solvent to feed were investigated for the fractionation of oxygenated compounds with high recoveries (≥85%) and without other macromolecules, such as pigments and waxes. Keywords: Bergamot Oil; terpene; oxygenat...
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SEPARATION PERFORMANCE OF SUPERCRITICAL CARBON DIOXIDE EXTRACTION COLUMN FOR THE CITRUS Oil PROCESSING: OBSERVATION USING SIMULATOR
Separation Science and Technology, 2002Co-Authors: Mitsuru Kondo, Motonobu Goto, Akio Kodama, Tsutomu HiroseAbstract:Phase behavior of limonene and linalyl acetate, which are principal constituents of terpenes and oxygenated compounds, respectively, in Bergamot Oil, with supercritical carbon dioxide (SC-CO2) was observed by use of process simulator (SIMSCI PRO/II). Solubility of each pure component in SC-CO2 was calculated by the Peng–Robinson equation of state. For a given calculating condition, the solubility of limonene was 2–5 times higher than that of linalyl acetate. Process flow diagram for the citrus Oil processing by SC-CO2 extraction column was successfully constructed to evaluate the separation performance. The effects of feed composition, feed inlet position, reflux ratio, and stage number on the extraction ratio of limonene, separation selectivity, and recovery of linalyl acetate were studied at 333K and 8.8 MPa.
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Deterpenation of Bergamot Oil by pressure swing adsorption in supercritical carbon dioxide
JOURNAL OF CHEMICAL ENGINEERING OF JAPAN, 2002Co-Authors: Motonobu Goto, Akio Kodama, Gou Fukui, Hongtao Wang, Tsutomu HiroseAbstract:Bergamot Oil is a kind of citrus Oil which contains terpenes, oxygenated compounds, and waxes. Terpenes were removed conventionally by vacuum distillation or solvent extraction. Recently, supercritical carbon dioxide is focused as an alternative solvent for citrus Oil processing. A fractionation process of Bergamot Oil was developed by using a pressure swing adsorption (PSA) concept in supercritical carbon dioxide. The objective of the fractionation is to separate oxygenated compounds from terpenes (deterpenation). The pressure swing operation between the adsorption step at a lower pressure and the desorption step at a higher pressure was carried out with silica gel as adsorbent. Oxygenated compounds were satisfactorily concentrated in the desorption step and the de-pressurization step. A mathematical model simulated the performance of the PSA process. An increase in the pressure ratio (desorption/adsorption) gave high purity, recovery and yield in the desorption step. The purity of 0.84 was obtained in the desorption step at a pressure ratio of 2.5. Model calculations agreed roughly with the experimental results, although the mathematical model was simple.
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Fractional extraction by supercritical carbon dioxide for the deterpenation of Bergamot Oil
Industrial & Engineering Chemistry Research, 2000Co-Authors: Mitsuru Kondo, Motonobu Goto, And Akio Kodama, Tsutomu HiroseAbstract:Supercritical fluid extraction of Bergamot Oil was carried out in the semibatch operation and continuous countercurrent operation to improve the Oil quality through selective separation between terpenes and oxygenated compounds. Vapor-phase equilibria for the quasi-ternary system were measured by a semibatch extraction with a uniform temperature column at the temperature range from 313 to 353 K and the pressure range from 7.8 to 10.8 MPa. Internal reflux induced by the temperature gradient along the column improved the separation selectivity. For a continuous operation, the effect of pressure on the separation selectivity was investigated.
Motonobu Goto - One of the best experts on this subject based on the ideXlab platform.
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Combination of supercritical CO2 and vacuum distillation for the fractionation of Bergamot Oil.
Journal of Agricultural and Food Chemistry, 2004Co-Authors: Tao Fang, Motonobu Goto, Mitsuru Sasaki, Tsutomu HiroseAbstract:Supercritical CO2 can be used to separate oxygenated compounds from essential Oils. This technique still cannot replace vacuum distillation as an industrial process because of low recoveries and inconsistent results. In the present work, a comparison between the two methods was made in terms of composition, recovery, and color. Vacuum distillation and supercritical CO2 are complementary processes for producing high quality oxygenated compounds with high recovery rates. The former is more suitable for removing monoterpenes at low fraction temperatures (≤308 K), and the latter is more suitable for separating oxygenated compounds from pigments and waxes. Consequently, the two methods were combined. For supercritical CO2 fractionation, the parameters of pressure, temperature gradient, and the ratio of solvent to feed were investigated for the fractionation of oxygenated compounds with high recoveries (≥85%) and without other macromolecules, such as pigments and waxes. Keywords: Bergamot Oil; terpene; oxygenat...
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SEPARATION PERFORMANCE OF SUPERCRITICAL CARBON DIOXIDE EXTRACTION COLUMN FOR THE CITRUS Oil PROCESSING: OBSERVATION USING SIMULATOR
Separation Science and Technology, 2002Co-Authors: Mitsuru Kondo, Motonobu Goto, Akio Kodama, Tsutomu HiroseAbstract:Phase behavior of limonene and linalyl acetate, which are principal constituents of terpenes and oxygenated compounds, respectively, in Bergamot Oil, with supercritical carbon dioxide (SC-CO2) was observed by use of process simulator (SIMSCI PRO/II). Solubility of each pure component in SC-CO2 was calculated by the Peng–Robinson equation of state. For a given calculating condition, the solubility of limonene was 2–5 times higher than that of linalyl acetate. Process flow diagram for the citrus Oil processing by SC-CO2 extraction column was successfully constructed to evaluate the separation performance. The effects of feed composition, feed inlet position, reflux ratio, and stage number on the extraction ratio of limonene, separation selectivity, and recovery of linalyl acetate were studied at 333K and 8.8 MPa.
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Deterpenation of Bergamot Oil by pressure swing adsorption in supercritical carbon dioxide
JOURNAL OF CHEMICAL ENGINEERING OF JAPAN, 2002Co-Authors: Motonobu Goto, Akio Kodama, Gou Fukui, Hongtao Wang, Tsutomu HiroseAbstract:Bergamot Oil is a kind of citrus Oil which contains terpenes, oxygenated compounds, and waxes. Terpenes were removed conventionally by vacuum distillation or solvent extraction. Recently, supercritical carbon dioxide is focused as an alternative solvent for citrus Oil processing. A fractionation process of Bergamot Oil was developed by using a pressure swing adsorption (PSA) concept in supercritical carbon dioxide. The objective of the fractionation is to separate oxygenated compounds from terpenes (deterpenation). The pressure swing operation between the adsorption step at a lower pressure and the desorption step at a higher pressure was carried out with silica gel as adsorbent. Oxygenated compounds were satisfactorily concentrated in the desorption step and the de-pressurization step. A mathematical model simulated the performance of the PSA process. An increase in the pressure ratio (desorption/adsorption) gave high purity, recovery and yield in the desorption step. The purity of 0.84 was obtained in the desorption step at a pressure ratio of 2.5. Model calculations agreed roughly with the experimental results, although the mathematical model was simple.
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Fractional extraction by supercritical carbon dioxide for the deterpenation of Bergamot Oil
Industrial & Engineering Chemistry Research, 2000Co-Authors: Mitsuru Kondo, Motonobu Goto, And Akio Kodama, Tsutomu HiroseAbstract:Supercritical fluid extraction of Bergamot Oil was carried out in the semibatch operation and continuous countercurrent operation to improve the Oil quality through selective separation between terpenes and oxygenated compounds. Vapor-phase equilibria for the quasi-ternary system were measured by a semibatch extraction with a uniform temperature column at the temperature range from 313 to 353 K and the pressure range from 7.8 to 10.8 MPa. Internal reflux induced by the temperature gradient along the column improved the separation selectivity. For a continuous operation, the effect of pressure on the separation selectivity was investigated.
Narumol Matan - One of the best experts on this subject based on the ideXlab platform.
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Effect of UV-C radiation and vapor released from a water hyacinth root absorbent containing Bergamot Oil to control mold on storage of brown rice
Journal of Food Science and Technology, 2016Co-Authors: Sumethee Songsamoe, Narumol MatanAbstract:The aims of this study were to develop absorbent material from a water hyacinth root containing Bergamot Oil and to improve its antifungal activity by using ultraviolet C (UV-C) against the growth of A. flavus on the brown rice. Process optimization was studied by the immersion of a water hyacinth root into a water and Bergamot Oil (300, 500 and 700 μl ml^−1). The root (absorbent material) was dried at 50, 70, and 90 °C for 10 min. Then, ultraviolet C (UV-C) was used for enhancing the antifungal activity of Bergamot Oil for 10, 15, and 20 min. The shelf-life of the brown rice with the absorbent after incubation at 25 ° C with 100 % RH for 12 weeks was also investigated. A microscope and a Fourier transform infrared spectroscopy (FTIR) were used to find out possible mode of action. Results indicated that the absorbent material produced from the water hyacinth root containing Bergamot Oil at 500 μl ml^−1 in the water solution, dried at 70 ° C and UV for 15 min showed the highest antifungal activity in a vapor phase against A. flavus on the brown rice. A microscopy investigation confirmed that the water hyacinth root could absorb Bergamot Oil from an outside water solution into root cells. Limonene in vapor phase was shown to be a stronger inhibitor than essential Oil after UV-C radiation and should be the key factor in boosting Bergamot Oil antifungal activity. A vapor phase of Bergamot Oil could be released and inhibit natural mold on the surface of the brown rice for up to 12 weeks; without the absorbent, mold covered the brown rice in only 4 weeks.
P. Agache - One of the best experts on this subject based on the ideXlab platform.
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Citropten and bergapten suction blister fluid concentrations after solar product application in man.
Skin Pharmacology and Physiology, 2009Co-Authors: P. Treffel, S. Makki, Philippe Humbert, B. Faivre, D. Blanc, P. AgacheAbstract:Citropten (5,7-dimethoxycoumarin) and bergapten (5-methoxypsoralen) are present in Bergamot Oil which is used as a cosmetic tanning product. The aim of this study was to quantify, using HPLC, the amou
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High-performance liquid chromatographic determination of citropten and bergapten in suction blister fluid after solar product application in humans
Journal of Chromatography B: Biomedical Sciences and Applications, 1991Co-Authors: S. Makki, P. Treffel, Philippe Humbert, P. AgacheAbstract:Citropten (5,7-dimethoxycoumarin) and bergapten (5-methoxypsoralen) are present in Bergamot Oil which is used as a tanning cosmetic product. The aim of this study was to quantify, using high-performance liquid chromatography, the amount of citropten and bergapten in the skin after suntan products application (an emulsion and an Oil formulation). A suction blister technique performed of the anterior aspect of the forearm permitted the collection of these two accumulated molecules. Fluorometric and ultraviolet detections were used for citropten and bergapten determinations, respectively.
Mitsuru Kondo - One of the best experts on this subject based on the ideXlab platform.
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SEPARATION PERFORMANCE OF SUPERCRITICAL CARBON DIOXIDE EXTRACTION COLUMN FOR THE CITRUS Oil PROCESSING: OBSERVATION USING SIMULATOR
Separation Science and Technology, 2002Co-Authors: Mitsuru Kondo, Motonobu Goto, Akio Kodama, Tsutomu HiroseAbstract:Phase behavior of limonene and linalyl acetate, which are principal constituents of terpenes and oxygenated compounds, respectively, in Bergamot Oil, with supercritical carbon dioxide (SC-CO2) was observed by use of process simulator (SIMSCI PRO/II). Solubility of each pure component in SC-CO2 was calculated by the Peng–Robinson equation of state. For a given calculating condition, the solubility of limonene was 2–5 times higher than that of linalyl acetate. Process flow diagram for the citrus Oil processing by SC-CO2 extraction column was successfully constructed to evaluate the separation performance. The effects of feed composition, feed inlet position, reflux ratio, and stage number on the extraction ratio of limonene, separation selectivity, and recovery of linalyl acetate were studied at 333K and 8.8 MPa.
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Fractional extraction by supercritical carbon dioxide for the deterpenation of Bergamot Oil
Industrial & Engineering Chemistry Research, 2000Co-Authors: Mitsuru Kondo, Motonobu Goto, And Akio Kodama, Tsutomu HiroseAbstract:Supercritical fluid extraction of Bergamot Oil was carried out in the semibatch operation and continuous countercurrent operation to improve the Oil quality through selective separation between terpenes and oxygenated compounds. Vapor-phase equilibria for the quasi-ternary system were measured by a semibatch extraction with a uniform temperature column at the temperature range from 313 to 353 K and the pressure range from 7.8 to 10.8 MPa. Internal reflux induced by the temperature gradient along the column improved the separation selectivity. For a continuous operation, the effect of pressure on the separation selectivity was investigated.
