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Martínez ME, Jorquera L, Poirrier P, Díaz K, Chamy R. Effect of Inoculum Size and Age, and Sucrose Concentration on Cell Growth to Promote Metabolites Production in Cultured Taraxacum officinale (Weber) Cells. PLANTS (BASEL, SWITZERLAND) 2023; 12:1116. [PMID: 36903977 PMCID: PMC10004745 DOI: 10.3390/plants12051116] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 02/17/2023] [Accepted: 02/20/2023] [Indexed: 06/18/2023]
Abstract
Pentacyclic triterpenes, including lupeol, α- amyrin, and β-amyrin, present a large range of biological activities including anti-inflammatory, anti-cancer, and gastroprotective properties. The phytochemistry of dandelion (Taraxacum officinale) tissues has been widely described. Plant biotechnology offers an alternative for secondary metabolite production and several active plant ingredients are already synthesized through in vitro cultures. This study aimed to establish a suitable protocol for cell growth and to determine the accumulation of α-amyrin and lupeol in cell suspension cultures of T. officinale under different culture conditions. To this end, inoculum density (0.2% to 8% (w/v)), inoculum age (2- to 10-week-old), and carbon source concentration (1%, 2.3%, 3.2%, and 5.5% (w/v)) were investigated. Hypocotyl explants of T. officinale were used for callus induction. Age, size, and sucrose concentrations were statistically significant in cell growth (fresh and dry weight), cell quality (aggregation, differentiation, viability), and triterpenes yield. The best conditions for establishing a suspension culture were achieved by using a 6-week-old callus at 4% (w/v) and 1% (w/v) of sucrose concentration. Results indicate that 0.04 (±0.02) α-amyrin and 0.03 (±0.01) mg/g lupeol can be obtained in suspension culture under these starting conditions at the 8th week of culture. The results of the present study provide a backdrop for future studies in which an elicitor could be incorporated to increase the large-scale production of α-amyrin and lupeol from T. officinale.
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Affiliation(s)
- María Eugenia Martínez
- Escuela de Ingeniería Bioquímica, Facultad de Ingeniería, Pontificia Universidad Católica de Valparaíso, Brasil 2085, Valparaíso 237463, Chile
| | - Lorena Jorquera
- Escuela de Ingeniería en Construcción y Transporte, Facultad de Ingeniería, Pontificia Universidad Católica de Valparaíso, Avenida Brasil 2147, Valparaíso 237463, Chile
| | - Paola Poirrier
- Escuela de Ingeniería Bioquímica, Facultad de Ingeniería, Pontificia Universidad Católica de Valparaíso, Brasil 2085, Valparaíso 237463, Chile
| | - Katy Díaz
- Departamento de Química, Universidad Técnica Federico Santa María, Avenida España #1680, Valparaíso 2390123, Chile
| | - Rolando Chamy
- Escuela de Ingeniería Bioquímica, Facultad de Ingeniería, Pontificia Universidad Católica de Valparaíso, Brasil 2085, Valparaíso 237463, Chile
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Klein EJ, Náthia-Neves G, Vardanega R, Meireles MAA, da Silva EA, Vieira MGA. Supercritical CO2 extraction of α-/β-amyrin from uvaia (Eugenia pyriformis Cambess.): Effects of pressure and co-solvent addition. J Supercrit Fluids 2019. [DOI: 10.1016/j.supflu.2019.104595] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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Ni J, Zhang G, Qin L, Li J, Li C. Simultaneously down-regulation of multiplex branch pathways using CRISPRi and fermentation optimization for enhancing β-amyrin production in Saccharomyces cerevisiae. Synth Syst Biotechnol 2019; 4:79-85. [PMID: 30949594 PMCID: PMC6428687 DOI: 10.1016/j.synbio.2019.02.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Revised: 02/19/2019] [Accepted: 02/19/2019] [Indexed: 11/04/2022] Open
Abstract
The production of β-amyrin in Saccharomyces cerevisiae is still low due to the inability of effectively regulating the endogenous metabolic pathway for competitive synthesis of β-amyrin precursors. In this study, we focused on two branches of β-amyrin synthetics pathway that consume β-amyrin precursors (2,3-oxidosqualene and cytosolic acetyl-CoA) and regulated related genes (ADH1, ADH4, ADH5, ADH6, CIT2, MLS2 and ERG7). We developed a CRISPRi method by constructing a multi-gRNA plasmid to down-regulate the seven genes simultaneously, which is reported for the first time in S. cerevisiae. The average transcription inhibition efficiency of the seven genes reached as high as 75.5%. Furthermore, by optimizing the fermentation condition (including pH, inoculum size, initial glucose concentration and feed of glucose or ethanol) and increasing extracellular transportation via supplying methyl-β-cyclodextrin, β-amyrin concentration of engineered strain SGibSdCg increased by 44.3% compared with the parent strain SGib, achieving 156.7 mg/L which was the highest concentration of β-amyrin reported in yeast. The one-step down-regulation of multiple genes using CRISPRi showed high efficiency and promising future in improving the yields of natural products. One step down-regulation of seven genes using CRISPRi was successfully realized in Saccharomyces cerevisiae. Highest reported yield of β-amyrin had obtained, which is 44.2% higher than initial strain. Exportation of intracellular β-amyrin was boosted by adding methyl-β-cyclodextrin.
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Affiliation(s)
- Jiangping Ni
- Institute for Synthetic Biosystem, Department of Biochemical Engineering, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, 5 ZhongGuanCunNan Road, Beijing 100081, China
| | - Genlin Zhang
- School of Chemistry and Chemical Engineering, Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi 832003, China
| | - Lei Qin
- Institute for Synthetic Biosystem, Department of Biochemical Engineering, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, 5 ZhongGuanCunNan Road, Beijing 100081, China
| | - Jun Li
- Institute for Synthetic Biosystem, Department of Biochemical Engineering, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, 5 ZhongGuanCunNan Road, Beijing 100081, China
| | - Chun Li
- Institute for Synthetic Biosystem, Department of Biochemical Engineering, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, 5 ZhongGuanCunNan Road, Beijing 100081, China
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Liu Q, Zhao H, Gao Y, Meng Y, Zhao XX, Pan SN. Effects of Dandelion Extract on the Proliferation of Rat Skeletal Muscle Cells and the Inhibition of a Lipopolysaccharide-Induced Inflammatory Reaction. Chin Med J (Engl) 2018; 131:1724-1731. [PMID: 29998893 PMCID: PMC6048917 DOI: 10.4103/0366-6999.235878] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Background Dandelion is commonly used in traditional Chinese medicine with several active compounds found in extracts. It has a variety of pharmacological effects, such as a reduction in swelling and inflammation, and detoxification. The mechanism by which dandelion extract inhibits the inflammatory response in skeletal muscle cells remains unknown; therefore, the aim of this study was to investigate the effects of dandelion extract root on the proliferation of skeletal muscle cells and the alleviation of lipopolysaccharide (LPS)-induced inflammatory response in vitro. Methods Rat skeletal muscle cells were isolated from Sprague-Dawley rat and cultured in vitro which were cultured in basal medium, or medium containing LPS or dandelion extract. Cell counting kit-8 (CCK-8) was employed to measure cell proliferation; meanwhile, the optimal concentration of dandelion extract and treatment time were selected. Crystal violet staining was used to detect the proliferation of muscle cells. Western blotting analysis was used to detect the levels of inflammatory factors, myogenic factor, and p-AKT protein expression. Results The optimal concentration and treatment time of dandelion extract for the following study were 5 mg/ml and 4 days, respectively. Dandelion extract was found to increase proliferation of rat skeletal muscle cells (t = 3.145, P < 0.05), with the highest effect observed at 5 mg/ml. LPS was found to decrease proliferation of skeletal muscle cells (t = -131.959, P < 0.001), and dandelion extract could against this affection (t = 19.466, P < 0.01). LPS could induce expression of inflammatory factors, including interleukin (IL)-1β, IL-6 and tumor necrosis factor (TNF)-α (IL-1β: t = 9.118, P < 0.01; IL-6: t = 4.346, P < 0.05; TNF-α: t = 15.806, P < 0.05), and dandelion extract was shown to reduce LPS-induced expression of IL-1β, IL-6 and TNF-α (IL-1β: t = -2.823, P < 0.05; IL-6: t = -3.348, P < 0.01; and TNF-α: t = -3.710, P < 0.01). Furthermore, LPS was also shown to decrease expression of myogenic factor, including myod1 and myogenin (MyoD1: t = 4.039, P < 0.05 and myogenin: t = 3.300, P < 0.01), but dandelion extract was shown to against this effect of LPS (MyoD1: t = -3.160, P < 0.05 and myogenin: t = -3.207, P < 0.01). And then, LPS was found to increase expression of p-AKT protein (p-AKT/AKT: t = 4.432, P < 0.05). Moreover, expression of p-AKT protein was found to decrease, with 5 mg/ml of dandelion extract (p-AKT/AKT: t = -3.618, P < 0.05). Conclusions The findings indicate that dandelion extract plays an important role in skeletal muscle cells viability regulation, promote cells proliferation by increasing level of p-AKT protein expression, and reduce LPS-induced expression of inflammatory factors, inhibiting the inflammatory response of rat skeletal muscle cells.
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Affiliation(s)
- Qiang Liu
- Department of Radiology, Shengjing Hospital, China Medical University, Shenyang, Liaoning 110004, China
| | - Heng Zhao
- Department of Radiology, Shengjing Hospital, China Medical University, Shenyang, Liaoning 110004; Department of Radiology, The First Affiliated Hospital of University of South China, Hengyang, Hunan 421001, China
| | - Yue Gao
- Department of Radiology, Shengjing Hospital, China Medical University, Shenyang, Liaoning 110004, China
| | - Yan Meng
- Department of Radiology, Shengjing Hospital, China Medical University, Shenyang, Liaoning 110004, China
| | - Xiang-Xuan Zhao
- Department of Radiology, Shengjing Hospital, China Medical University, Shenyang, Liaoning 110004, China
| | - Shi-Nong Pan
- Department of Radiology, Shengjing Hospital, China Medical University, Shenyang, Liaoning 110004, China
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de Souza ARC, Guedes AR, Folador Rodriguez JM, Bombardelli MC, Corazza ML. Extraction of Arctium Lappa leaves using supercritical CO2 + ethanol: Kinetics, chemical composition, and bioactivity assessments. J Supercrit Fluids 2018. [DOI: 10.1016/j.supflu.2018.06.011] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Nowak R, Drozd M, Mendyk E, Lemieszek M, Krakowiak O, Kisiel W, Rzeski W, Szewczyk K. A New Method for the Isolation of Ergosterol and Peroxyergosterol as Active Compounds of Hygrophoropsis aurantiaca and in Vitro Antiproliferative Activity of Isolated Ergosterol Peroxide. Molecules 2016; 21:molecules21070946. [PMID: 27455215 PMCID: PMC6273287 DOI: 10.3390/molecules21070946] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Revised: 07/07/2016] [Accepted: 07/16/2016] [Indexed: 11/21/2022] Open
Abstract
In the present study, ergosterol peroxide and ergosterol were isolated for the first time from fresh fruit bodies of Hygrophoropsis aurantiaca (False Chanterelle). The substances were characterized mainly by spectroscopic methods (1H-NMR, 13C-NMR, DEPT-45, DEPT-90, DEPT-135, 2D-NMR). In our study, a new specific thin layer chromatographic method was developed for determination of ergosterol and ergosterol peroxide in H.aurantiaca extract. The method is based on the separation of n-hexane extract on silica gel (Silica Gel G) TLC plates using the optimized solvent system toluene/ethyl acetate (3:1; v/v). The main advantages of the developed method are the simplicity of operation and the low cost. The in vitro study results revealed the antiproliferative properties of ergosterol peroxide against LS180 human colon cancer cells. The described effect was attributed both to altered mitochondrial activity and decreased DNA synthesis. Additionally, in the same concentration range the investigated compound was not toxic to CCD 841 CoTr human colon epithelial cells. The present study suggests that fruit bodies of H. aurantiaca have great potential for producing substances and extracts with potential applications in medicine.
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Affiliation(s)
- Renata Nowak
- Department of Pharmaceutical Botany, Medical University of Lublin, 1 Chodźki Str., 20-093 Lublin, Poland.
| | - Marta Drozd
- Department of Pharmaceutical Botany, Medical University of Lublin, 1 Chodźki Str., 20-093 Lublin, Poland.
| | - Ewaryst Mendyk
- Analytical Laboratory, Faculty of Chemistry, University of Maria Curie-Sklodowska, 3/27 M.C. Skłodowska Sq., 20-031 Lublin, Poland.
| | - Marta Lemieszek
- Department of Medical Biology, Institute of Rural Health, 2 Jaczewskiego Str., 20-090 Lublin, Poland.
| | - Olga Krakowiak
- Department of Pharmaceutical Botany, Medical University of Lublin, 1 Chodźki Str., 20-093 Lublin, Poland.
| | - Wanda Kisiel
- Department of Phytochemistry, Institute of Pharmacology, Polish Academy of Sciences, 12 Smętna Str., 31-343 Kraków, Poland.
| | - Wojciech Rzeski
- Department of Medical Biology, Institute of Rural Health, 2 Jaczewskiego Str., 20-090 Lublin, Poland.
- Department of Virology and Immunology, Institute of Microbiology and Biotechnology, University of Maria Curie-Sklodowska, 19 Akademicka Str., 20-033 Lublin, Poland.
| | - Katarzyna Szewczyk
- Department of Pharmaceutical Botany, Medical University of Lublin, 1 Chodźki Str., 20-093 Lublin, Poland.
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Zhang G, Cao Q, Liu J, Liu B, Li J, Li C. Refactoring β-amyrin synthesis inSaccharomyces cerevisiae. AIChE J 2015. [DOI: 10.1002/aic.14950] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Genlin Zhang
- School of Life Science; Beijing Institute of Technology; Beijing 100081 China
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering; Shihezi University; Shihezi 832000 China
| | - Qian Cao
- School of Life Science; Beijing Institute of Technology; Beijing 100081 China
| | - Jingzhu Liu
- School of Life Science; Beijing Institute of Technology; Beijing 100081 China
| | - Baiyang Liu
- School of Life Science; Beijing Institute of Technology; Beijing 100081 China
| | - Jun Li
- School of Life Science; Beijing Institute of Technology; Beijing 100081 China
| | - Chun Li
- School of Life Science; Beijing Institute of Technology; Beijing 100081 China
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Uddin MS, Sarker MZI, Ferdosh S, Akanda MJH, Easmin MS, Bt Shamsudin SH, Bin Yunus K. Phytosterols and their extraction from various plant matrices using supercritical carbon dioxide: a review. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2015; 95:1385-1394. [PMID: 25048690 DOI: 10.1002/jsfa.6833] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Revised: 07/01/2014] [Accepted: 07/16/2014] [Indexed: 06/03/2023]
Abstract
Phytosterols provide important health benefits: in particular, the lowering of cholesterol. From environmental and commercial points of view, the most appropriate technique has been searched for extracting phytosterols from plant matrices. As a green technology, supercritical fluid extraction (SFE) using carbon dioxide (CO2) is widely used to extract bioactive compounds from different plant matrices. Several studies have been performed to extract phytosterols using supercritical CO2 (SC-CO2) and this technology has clearly offered potential advantages over conventional extraction methods. However, the efficiency of SFE technology fully relies on the processing parameters, chemistry of interest compounds, nature of the plant matrices and expertise of handling. This review covers SFE technology with particular reference to phytosterol extraction using SC-CO2. Moreover, the chemistry of phytosterols, properties of supercritical fluids (SFs) and the applied experimental designs have been discussed for better understanding of phytosterol solubility in SC-CO2.
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Affiliation(s)
- Md Salim Uddin
- Kulliyyah of Pharmacy, International Islamic University Malaysia, Kuantan Campus, 25200, Kuantan, Pahang, Malaysia; Department of Biochemistry and Molecular Biology, University of Rajshahi, Rajshahi, 6205, Bangladesh
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Bhattacharya M, Srivastav P, Mishra H. Optimization of process variables for supercritical fluid extraction of ergothioneine and polyphenols from Pleurotus ostreatus and correlation to free-radical scavenging activity. J Supercrit Fluids 2014. [DOI: 10.1016/j.supflu.2014.07.031] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Végh K, Alberti Á, Riethmüller E, Tóth A, Béni S, Kéry Á. Supercritical fluid extraction and convergence chromatographic determination of parthenolide in Tanacetum parthenium L.: Experimental design, modeling and optimization. J Supercrit Fluids 2014. [DOI: 10.1016/j.supflu.2014.07.029] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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de Melo M, Silvestre A, Silva C. Supercritical fluid extraction of vegetable matrices: Applications, trends and future perspectives of a convincing green technology. J Supercrit Fluids 2014. [DOI: 10.1016/j.supflu.2014.04.007] [Citation(s) in RCA: 229] [Impact Index Per Article: 22.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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The determination of the caffeic acid derivatives of Echinacea purpurea aerial parts under various extraction conditions by supercritical fluid extraction (SFE). J Supercrit Fluids 2014. [DOI: 10.1016/j.supflu.2014.02.014] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Felföldi-Gáva A, Szarka S, Simándi B, Blazics B, Simon B, Kéry Á. Supercritical fluid extraction of Alnus glutinosa (L.) Gaertn. J Supercrit Fluids 2012. [DOI: 10.1016/j.supflu.2011.10.003] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Abstract
Supercritical fluids (SCFs) are increasingly replacing the organic solvents, e.g., n-hexane, chloroform, dichloromethane, or methanol, that are conventionally used in industrial extraction, purification, and recrystallization operations because of regulatory and environmental pressures on hydrocarbon and ozone-depleting emissions. In natural products extraction and isolation, supercritical fluid extraction (SFE), especially employing supercritical CO(2), has become a popular choice. Sophisticated modern technologies allow precise regulation of changes in temperature and pressure, and thus manipulation of solvating property of the SCF, which helps the extraction of natural products of a wide range of polarities. This chapter deals mainly with the application of the SFE technology in the natural products extraction and isolation, and outlines various methodologies with specific examples.
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Affiliation(s)
- Lutfun Nahar
- Leicester School of Pharmacy, De Montfort University, The Gateway, Leicester, UK.
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Koh YJ, Cha DS, Ko JS, Park HJ, Choi HD. Anti-Inflammatory Effect of Taraxacum officinale Leaves on Lipopolysaccharide-Induced Inflammatory Responses in RAW 264.7 Cells. J Med Food 2010; 13:870-8. [DOI: 10.1089/jmf.2009.1249] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Affiliation(s)
- Yoon-Jeoung Koh
- Research Division for Food Industry Platform Technology, Korea Food Research Institute, Seongnam, Republic of Korea
| | - Dong-Soo Cha
- Biocoats Co., Ltd., Korea University, Seoul, Republic of Korea
| | - Je-Sang Ko
- School of Life Science and Biotechnology, Korea University, Seoul, Republic of Korea
| | - Hyun-Jin Park
- School of Life Science and Biotechnology, Korea University, Seoul, Republic of Korea
| | - Hee-Don Choi
- Research Division for Food Industry Platform Technology, Korea Food Research Institute, Seongnam, Republic of Korea
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Optimization of supercritical fluid extraction of phytosterol from roselle seeds with a central composite design model. FOOD AND BIOPRODUCTS PROCESSING 2010. [DOI: 10.1016/j.fbp.2009.11.002] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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β-Sitosterol: supercritical carbon dioxide extraction from sea buckthorn (Hippophae rhamnoides L.) seeds. Int J Mol Sci 2010; 11:1842-50. [PMID: 20480045 PMCID: PMC2871141 DOI: 10.3390/ijms11041842] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2010] [Accepted: 04/20/2010] [Indexed: 11/17/2022] Open
Abstract
Supercritical fluid extraction represents an efficient and environmentally friendly technique for isolation of phytosterols from different plant sources. Sea buckthorn (Hippophae rhamnoides L.) seeds were extracted with supercritical carbon dioxide at pressures ranging from 15–60 MPa and temperatures of 40–80 °C. Oil and β-sitosterol yields were measured in the extraction course and compared with Soxhlet extraction with hexane. The average yield of β-sitosterol was 0.31 mg/g of seeds. The maximum concentration of β-sitosterol in the extract, 0.5% w/w, was achieved at 15 MPa, 40 °C, and a carbon dioxide consumption of 50 g/g of seeds. The extraction rate was maximal at 60 MPa and 40 °C. Both β-sitosterol yield and its concentration in the extract obtained with hexane were lower than with carbon dioxide.
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Ziemons E, Mbakop NW, Rozet E, Lejeune R, Angenot L, Thunus L, Hubert P. Optimisation of SFE method on-line coupled to FT-IR spectroscopy for the real-time monitoring of the extraction of tagitinin C in T. diversifolia. J Supercrit Fluids 2007. [DOI: 10.1016/j.supflu.2006.07.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Sajfrtová M, Sovová H, Opletal L, Bártlová M. Near-critical extraction of β-sitosterol and scopoletin from stinging nettle roots. J Supercrit Fluids 2005. [DOI: 10.1016/j.supflu.2004.12.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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