The use of supercritical fluid carbon dioxide (SFCO2) in extraction of lanolin and its alcohol is superior to the conventional solvent extraction method. Its distinctive advantages include high extractive ratio, nonto...The use of supercritical fluid carbon dioxide (SFCO2) in extraction of lanolin and its alcohol is superior to the conventional solvent extraction method. Its distinctive advantages include high extractive ratio, nontoxic and nonflammable solvents, and minimal by -product pollution. The resulting refined lanolin and its alcohol have light color and little odor, and can be used as raw materials for high grade cosmetic products.展开更多
Allelochemicals of Chinese-fir root was extracted by technology of supercritical CO2 extraction under orthogonal experiment design, and it was used to analyze allelopathic activity of Chinese-fir through bioassay of s...Allelochemicals of Chinese-fir root was extracted by technology of supercritical CO2 extraction under orthogonal experiment design, and it was used to analyze allelopathic activity of Chinese-fir through bioassay of seed germination. The results showed that as to the available rate of allelochemicals, the pressure and temperature of extraction were the most important factors. The allelochemicals of Chinese-fir root extracted by pure CO2 and ethanol mixed with CO2 have different allelopathic activities to seed germination, and the allelochemicals extracted by ethanol mixed with CO2 had stronger inhibitory effects on seed germination than that extracted by pure CO2.展开更多
The feasibility of removal of the organochlorine pesticides residues of hexachlorocyclohexane(BHC) from radix ginseng with supercritical CO2 was explored. Some factors, such as extraction pressure, extraction temperat...The feasibility of removal of the organochlorine pesticides residues of hexachlorocyclohexane(BHC) from radix ginseng with supercritical CO2 was explored. Some factors, such as extraction pressure, extraction temperature, and kinds of co-solvents were investigated. The experimental results indicate that it is possible to reduce BHC residues in radix ginseng to the level of 0.1 × 10^-6 with supercritical CO2 in the presence of suitable amount of co-solvent, such as water.展开更多
Taking extraction rate as an indicator,the extraction technology of Chinese-fir heartwood by supercritical carbon dioxide treatment was studied, and the extraction rate of the SFE-CO<sub>2</sub> method was...Taking extraction rate as an indicator,the extraction technology of Chinese-fir heartwood by supercritical carbon dioxide treatment was studied, and the extraction rate of the SFE-CO<sub>2</sub> method was compared to that of traditional extraction method. The results show that when extraction processing condition were:extraction pressure 30 MPa,extraction temperature 40℃,extraction time 120 m,and flow velocity 20 kg/h,the extraction rate of SFE-CO<sub>2</sub> was 0.99%,0.20%more than that of the traditional extraction method.However,taking the cost into consideration,it is proposed that the traditional extraction is used unless there are specific requirements.展开更多
Extensive filter tea production in the last decade has increased the amount of generated waste.Due to the particle size(less than 0.315 mm),this material,also known as herbal dust,cannot be packed into the filter tea ...Extensive filter tea production in the last decade has increased the amount of generated waste.Due to the particle size(less than 0.315 mm),this material,also known as herbal dust,cannot be packed into the filter tea bags.According to previous studies,valuable bioactive compounds have been recovered from herbal dusts.Therefore,this study is focused on the valorization of ginger(Zingiber officinale)herbal dust,which is commonly used for the treatment of digestive disorders,colds,and various health issues.To obtain highly valuable extracts rich in non-polar and low-polar bioactive compounds novel Supercritical carbon dioxide(SFE-CO_(2))extraction was applied.As a reference technique,Soxhlet extraction(methylene chloride)was employed.The chemical profiles of all extracts were determined by GC-MS.The most dominant compounds,according to the results,were hydrocarbon sesquiterpene zingiberene(7.51%-14.28%),sesquiterpenesβ-sesquiphellandrene(3.70%-7.34%),β-bisabolene(3.54%-6.93%),ar-curcumene(3.02%-6.19%)and non-volatile phenolic compounds 6-gingerol(25.33%-31.11%),6-shogaol(12.21%-14.91%).Based on the chemical profile of the extracts,the in silico study was carried out where the effects of ginger compounds with a focus on diabetes were specified.Besides,the most potential SFE-CO_(2)extract was selected for the investigation of effects on short-and long-term cell viability on liver cancer cells.展开更多
基金Science Foundation of National Education Commission(99053)
文摘The use of supercritical fluid carbon dioxide (SFCO2) in extraction of lanolin and its alcohol is superior to the conventional solvent extraction method. Its distinctive advantages include high extractive ratio, nontoxic and nonflammable solvents, and minimal by -product pollution. The resulting refined lanolin and its alcohol have light color and little odor, and can be used as raw materials for high grade cosmetic products.
基金This paper was supported by Natural Science Foundation of Fujian Province (B0010020)
文摘Allelochemicals of Chinese-fir root was extracted by technology of supercritical CO2 extraction under orthogonal experiment design, and it was used to analyze allelopathic activity of Chinese-fir through bioassay of seed germination. The results showed that as to the available rate of allelochemicals, the pressure and temperature of extraction were the most important factors. The allelochemicals of Chinese-fir root extracted by pure CO2 and ethanol mixed with CO2 have different allelopathic activities to seed germination, and the allelochemicals extracted by ethanol mixed with CO2 had stronger inhibitory effects on seed germination than that extracted by pure CO2.
文摘The feasibility of removal of the organochlorine pesticides residues of hexachlorocyclohexane(BHC) from radix ginseng with supercritical CO2 was explored. Some factors, such as extraction pressure, extraction temperature, and kinds of co-solvents were investigated. The experimental results indicate that it is possible to reduce BHC residues in radix ginseng to the level of 0.1 × 10^-6 with supercritical CO2 in the presence of suitable amount of co-solvent, such as water.
文摘Taking extraction rate as an indicator,the extraction technology of Chinese-fir heartwood by supercritical carbon dioxide treatment was studied, and the extraction rate of the SFE-CO<sub>2</sub> method was compared to that of traditional extraction method. The results show that when extraction processing condition were:extraction pressure 30 MPa,extraction temperature 40℃,extraction time 120 m,and flow velocity 20 kg/h,the extraction rate of SFE-CO<sub>2</sub> was 0.99%,0.20%more than that of the traditional extraction method.However,taking the cost into consideration,it is proposed that the traditional extraction is used unless there are specific requirements.
基金supported by the Ministry of Education,Science,and Technological Development.Project number:451-03-66/2024-03/200134.
文摘Extensive filter tea production in the last decade has increased the amount of generated waste.Due to the particle size(less than 0.315 mm),this material,also known as herbal dust,cannot be packed into the filter tea bags.According to previous studies,valuable bioactive compounds have been recovered from herbal dusts.Therefore,this study is focused on the valorization of ginger(Zingiber officinale)herbal dust,which is commonly used for the treatment of digestive disorders,colds,and various health issues.To obtain highly valuable extracts rich in non-polar and low-polar bioactive compounds novel Supercritical carbon dioxide(SFE-CO_(2))extraction was applied.As a reference technique,Soxhlet extraction(methylene chloride)was employed.The chemical profiles of all extracts were determined by GC-MS.The most dominant compounds,according to the results,were hydrocarbon sesquiterpene zingiberene(7.51%-14.28%),sesquiterpenesβ-sesquiphellandrene(3.70%-7.34%),β-bisabolene(3.54%-6.93%),ar-curcumene(3.02%-6.19%)and non-volatile phenolic compounds 6-gingerol(25.33%-31.11%),6-shogaol(12.21%-14.91%).Based on the chemical profile of the extracts,the in silico study was carried out where the effects of ginger compounds with a focus on diabetes were specified.Besides,the most potential SFE-CO_(2)extract was selected for the investigation of effects on short-and long-term cell viability on liver cancer cells.
