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Farasati Far B, Gouranmohit G, Naimi-Jamal MR, Neysani E, El-Nashar HAS, El-Shazly M, Khoshnevisan K. The potential role of Hypericum perforatum in wound healing: A literature review on the phytochemicals, pharmacological approaches, and mechanistic perspectives. Phytother Res 2024; 38:3271-3295. [PMID: 38600756 DOI: 10.1002/ptr.8204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 03/18/2024] [Accepted: 03/21/2024] [Indexed: 04/12/2024]
Abstract
St. John's Wort, commonly known as Hypericum perforatum L., is a flowering plant in the Clusiaceae family that traditionally been employed for treating anxiety, depression, wounds, burns, sunburn, irritation, and stomach ailments. This review provides a synopsis of H. perforatum L. phytoconstituents and their biological effects, highlighting its beneficial therapeutic properties for dermatological indications, as well as its antioxidant, antimicrobial, anti-inflammatory, and anti-angiogenic activity in various applications including wound healing and skin conditions such as eczema, sun burn and minor burns also spastic paralysis, stiff neck and mood disorders as anti-depressant and nerve pains such as neuralgia. The data were collected from several databases as Web of Science PubMed, ScienceDirect, Scopus and Google Scholar using the terms: "H. perforatum L.", "H. perforatum L. /phytochemistry," and "H. perforatum extracts/wound healing" collected from 1994 to 2023. The findings suggest H. perforatum L. acts through various mechanisms and plays a role in each phase of the wound healing process, including re-epithelialization, angiogenesis, wound contraction, and connective tissue regeneration. H. perforatum L. enhances collagen deposition, decreases inflammation, inhibits fibroblast migration, and promotes epithelialization by increasing the number of fibroblasts with polygonal shape and the number of collagen fibers within fibroblasts. H. Perforatum L. extracts modulate the immune response and reduce inflammation were found to accelerate the wound healing process via inhibition of inflammatory mediators' production like interleukin-6, tumor necrosis factor-α, cyclooxygenase-2 gene expression, and inducible nitric oxide synthase. Thus, H. perforatum L. represents a potential remedy for a wide range of dermatological problems, owing to its constituents with beneficial therapeutic properties. H. perforatum L. could be utilized in the development of novel wound healing therapies.
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Affiliation(s)
- Bahareh Farasati Far
- Research Laboratory of Green Organic Synthesis and Polymers, Department of Chemistry, Iran University of Science and Technology, Tehran, Iran
| | - Ghazaleh Gouranmohit
- Faculty of Pharmaceutical Chemistry, Pharmaceutical Sciences Branch, Islamic Azad University, Tehran, Iran
| | - Mohammad Reza Naimi-Jamal
- Research Laboratory of Green Organic Synthesis and Polymers, Department of Chemistry, Iran University of Science and Technology, Tehran, Iran
| | - Erfan Neysani
- Pharmaceutical Sciences Research Center, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Heba A S El-Nashar
- Department of Pharmacognosy, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt
| | - Mohamed El-Shazly
- Department of Pharmacognosy, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt
| | - Kamyar Khoshnevisan
- Medical Nanotechnology and Tissue Engineering Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Li XX, Yan Y, Zhang J, Ding K, Xia CY, Pan XG, Shi YJ, Xu JK, He J, Zhang WK. Hyperforin: A natural lead compound with multiple pharmacological activities. PHYTOCHEMISTRY 2023; 206:113526. [PMID: 36442576 DOI: 10.1016/j.phytochem.2022.113526] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 11/23/2022] [Accepted: 11/24/2022] [Indexed: 06/16/2023]
Abstract
Hypericum perforatum L. (Clusiaceae), commonly known as St. John's wort, has a rich historical background as one of the oldest and most widely studied herbal medicines. Hyperforin is the main antidepressant active ingredient of St. John's wort. In recent years, hyperforin has attached increasing attention due to its multiple pharmacological activities. In this review, the information on hyperforin was systematically summarized. Hyperforin is considered to be a lead compound with diverse pharmacological activities including anti-depression, anti-tumor, anti-dementia, anti-diabetes and others. It can be obtained by extraction and synthesis. Further pharmacological studies and more precise detection methods will help develop a value for hyperforin. In addition, structural modification and pharmaceutical preparation technology will be beneficial to promoting the research progress of hyperforin based innovative drugs. Although these works are full of known and unknown challenges, researchers are still expected to make hyperforin play a greater value.
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Affiliation(s)
- Xin-Xin Li
- Institute of Clinical Medical Sciences & Department of Pharmacy, China-Japan Friendship Hospital, Beijing, 100029, PR China; School of Life Sciences & School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 100029, PR China
| | - Yu Yan
- Institute of Clinical Medical Sciences & Department of Pharmacy, China-Japan Friendship Hospital, Beijing, 100029, PR China
| | - Jia Zhang
- School of Life Sciences & School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 100029, PR China
| | - Kang Ding
- School of Life Sciences & School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 100029, PR China
| | - Cong-Yuan Xia
- Institute of Clinical Medical Sciences & Department of Pharmacy, China-Japan Friendship Hospital, Beijing, 100029, PR China
| | - Xue-Ge Pan
- School of Life Sciences & School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 100029, PR China
| | - Yan-Jing Shi
- School of Life Sciences & School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 100029, PR China
| | - Jie-Kun Xu
- School of Life Sciences & School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 100029, PR China.
| | - Jun He
- Institute of Clinical Medical Sciences & Department of Pharmacy, China-Japan Friendship Hospital, Beijing, 100029, PR China.
| | - Wei-Ku Zhang
- Institute of Clinical Medical Sciences & Department of Pharmacy, China-Japan Friendship Hospital, Beijing, 100029, PR China.
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Adnadjevic B, Koturevic B, Jovanovic J. Isothermal kinetics of ethanolic extraction of total hypericin from pre-extracted Hypericum perforatum flowers. PHYTOCHEMICAL ANALYSIS : PCA 2021; 32:757-766. [PMID: 33319396 DOI: 10.1002/pca.3021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 10/26/2020] [Accepted: 11/26/2020] [Indexed: 06/12/2023]
Abstract
INTRODUCTION Hypericum perforatum L., Hypericaceae (St John's wort) is a highly familiar plant in the medicinal community which recently showed good antiviral activities including against some types of coronavirus. OBJECTIVE Establishing the kinetics of isothermal extraction of total hypericin (TH) from the pre-extracted flowers of H. perforatum flowers. METHODS The solvent extraction of TH from the remaining solid residue after the pre-extraction procedure was performed providing isothermal conditions at the temperature of 313 K, 323 K, and 328 K (±1 K) using ethanol as a solvent. The feasibility of mathematical modelling of the isothermal kinetics of TH extraction was explored applying some of the frequently used kinetic models of solvent extraction: first-order reaction model, film theory model, unsteady-state diffusion model, parabolic diffusion model, Elovich's equation. The kinetic complexity was examined using the differential isoconversional method. RESULTS The kinetics of isothermal solvent extraction of TH is a kinetic elementary process with the unique rate-determining step. It was found that the kinetics of isothermal extraction of TH can be best described employing the theoretical Jander three-dimensional (3D) diffusional model and its suitability for modelling the investigated extraction was confirmed with statistical parameters [adjusted linear correlation coefficient (R2 adj ) = 0.998-0.999 and the standard error (SE) = 0.005-0.006]. The values of the model kinetic parameters (rate constant (kM /min-1 ), activation energy (Ea = 21.0 ± 4.9 kJ/mol) and pre-exponential factor (lnA = 3.1 ± 2.2 min-1 ) were calculated. CONCLUSIONS Based on the model mechanism of the kinetics of the investigated extraction a new mathematical model is suggested and the controlling step of the overall process was found.
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Affiliation(s)
| | - Biljana Koturevic
- Department of Forensic Engineering, University of Criminal Investigation and Police Studies, Zemun, Belgrade, Serbia
| | - Jelena Jovanovic
- Institute of General and Physical Chemistry, University of Belgrade, Belgrade, Serbia
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Oreopoulou A, Choulitoudi E, Tsimogiannis D, Oreopoulou V. Six Common Herbs with Distinctive Bioactive, Antioxidant Components. A Review of Their Separation Techniques. Molecules 2021; 26:molecules26102920. [PMID: 34069026 PMCID: PMC8157015 DOI: 10.3390/molecules26102920] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 05/10/2021] [Accepted: 05/10/2021] [Indexed: 12/15/2022] Open
Abstract
Rosemary, oregano, pink savory, lemon balm, St. John’s wort, and saffron are common herbs wildly grown and easily cultivated in many countries. All of them are rich in antioxidant compounds that exhibit several biological and health activities. They are commercialized as spices, traditional medicines, or raw materials for the production of essential oils. The whole herbs or the residues of their current use are potential sources for the recovery of natural antioxidant extracts. Finding effective and feasible extraction and purification methods is a major challenge for the industrial production of natural antioxidant extracts. In this respect, the present paper is an extensive literature review of the solvents and extraction methods that have been tested on these herbs. Green solvents and novel extraction methods that can be easily scaled up for industrial application are critically discussed.
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Affiliation(s)
- Antigoni Oreopoulou
- Laboratory of Food Chemistry and Technology, School of Chemical Engineering, National Technical University of Athens, 5 Iroon Polytechniou, 15780 Athens, Greece; (A.O.); (E.C.); (D.T.)
- Vioryl, Agricultural and Chemical Industry, Research S.A., 28th km National Road Athens-Lamia, 19014 Attiki, Greece
| | - Evanthia Choulitoudi
- Laboratory of Food Chemistry and Technology, School of Chemical Engineering, National Technical University of Athens, 5 Iroon Polytechniou, 15780 Athens, Greece; (A.O.); (E.C.); (D.T.)
| | - Dimitrios Tsimogiannis
- Laboratory of Food Chemistry and Technology, School of Chemical Engineering, National Technical University of Athens, 5 Iroon Polytechniou, 15780 Athens, Greece; (A.O.); (E.C.); (D.T.)
- NFA (Natural Food Additives), Laboratory of Natural Extracts Development, 6 Dios st, 17778 Athens, Greece
| | - Vassiliki Oreopoulou
- Laboratory of Food Chemistry and Technology, School of Chemical Engineering, National Technical University of Athens, 5 Iroon Polytechniou, 15780 Athens, Greece; (A.O.); (E.C.); (D.T.)
- Correspondence: ; Tel.: +30-2107723166
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Milevskaya V, Prasad S, Temerdashev Z. Extraction and chromatographic determination of phenolic compounds from medicinal herbs in the Lamiaceae and Hypericaceae families: A review. Microchem J 2019. [DOI: 10.1016/j.microc.2018.11.041] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Hosseini SZ, Bozorgmehr MR, Masrurnia M, Beyramabadi SA. Study of the effects of methanol, ethanol and propanol alcohols as Co-solvents on the interaction of methimazole, propranolol and phenazopyridine with carbon dioxide in supercritical conditions by molecular dynamics. J Supercrit Fluids 2018. [DOI: 10.1016/j.supflu.2018.06.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Biotechnological production of hyperforin for pharmaceutical formulation. Eur J Pharm Biopharm 2017; 126:10-26. [PMID: 28377273 DOI: 10.1016/j.ejpb.2017.03.024] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Revised: 03/28/2017] [Accepted: 03/29/2017] [Indexed: 01/09/2023]
Abstract
Hyperforin is a major active constituent of Hypericum perforatum (St. John's wort). It has amazing pharmacological activities, such as antidepressant properties, but it is labile and difficult to synthesize. Its sensitivity and lipophilicity are challenges for processing and formulation. Its chemical complexity provokes approaches of biotechnological production and modification. Dedifferentiated H. perforatum cell cultures lack appropriate storage sites and hence appreciable hyperforin levels. Shoot cultures are capable of forming hyperforin but less suitable for biomass up-scaling in bioreactors. Roots commonly lack hyperforin but a recently established adventitious root line has been demonstrated to produce hyperforin and derivatives at promising levels. The roots also contained lupulones, the typical constituents of hop (Humulus lupulus). Although shear-sensitive, these root cultures provide a potential production platform for both individual compounds and extracts with novel combinations of constituents and pharmacological activities. Besides in vitro cultivation techniques, the reconstruction of hyperforin biosynthesis in microorganisms is a promising alternative for biotechnological production. The biosynthetic pathway is under study, with omics-technologies being increasingly implemented. These biotechnological approaches may not only yield hyperforin at reasonable productivity but also allow for modifications of its chemical structure and pharmacological profile.
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Naziri E, Glisic SB, Mantzouridou FT, Tsimidou MZ, Nedovic V, Bugarski B. Advantages of supercritical fluid extraction for recovery of squalene from wine lees. J Supercrit Fluids 2016. [DOI: 10.1016/j.supflu.2015.07.014] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Milevskaya VV, Statkus MA, Temerdashev ZA, Kiseleva NV, Vernikovskaya NA. Methods for the extraction of biologically active substances from medicinal plants based on an example of St. John’s wort components. JOURNAL OF ANALYTICAL CHEMISTRY 2015. [DOI: 10.1134/s1061934815120126] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Abdelhadi M, Meullemiestre A, Gelicus A, Hassani A, Rezzoug SA. Intensification of Hypericum perforatum L. oil isolation by solvent-free microwave extraction. Chem Eng Res Des 2015. [DOI: 10.1016/j.cherd.2014.04.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Akalın MK, Karagöz S. Optimization of Ethanol Supercritical Fluid Extraction of Medicinal Compounds from St. John's Wort by Central Composite Design. ANAL LETT 2014. [DOI: 10.1080/00032719.2014.888724] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Drozdov AL, Beleneva IA, Lepeshkin FD, Krutikova AA, Ustinovich KB, Pokrovskii OI, Parenago OO. The effect of St. John’s wort supercritical extract and hyperforin solution on biological subjects. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY B 2014. [DOI: 10.1134/s1990793113070063] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Hatami T, Glisic SB, Orlovic AM. Modelling and optimization of supercritical CO2 extraction of St. John's Wort (Hypericum perforatum L.) using genetic algorithm. J Supercrit Fluids 2012. [DOI: 10.1016/j.supflu.2011.12.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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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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Barros FMC, Silva FC, Nunes JM, Vargas RMF, Cassel E, von Poser GL. Supercritical extraction of phloroglucinol and benzophenone derivatives from Hypericum carinatum: Quantification and mathematical modeling. J Sep Sci 2011; 34:3107-13. [DOI: 10.1002/jssc.201100455] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2011] [Revised: 08/05/2011] [Accepted: 08/06/2011] [Indexed: 01/16/2023]
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COSSUTA DÁNIEL, VATAI TÜNDE, BÁTHORI MÁRIA, HOHMANN JUDIT, KEVE TIBOR, SIMÁNDI BÉLA. EXTRACTION OF HYPERFORIN AND HYPERICIN FROM ST. JOHN'S WORT (HYPERICUM PERFORATUM L.) WITH DIFFERENT SOLVENTS. J FOOD PROCESS ENG 2011. [DOI: 10.1111/j.1745-4530.2010.00583.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Helmja K, Vaher M, Püssa T, Orav A, Viitak A, Levandi T, Kaljurand M. Variation in the composition of the essential oils, phenolic compounds and mineral elements ofHypericum perforatumL. growing in Estonia. Nat Prod Res 2011; 25:496-510. [DOI: 10.1080/14786411003792165] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Glisic SB, Ristic M, Skala DU. The combined extraction of sage (Salvia officinalis L.): ultrasound followed by supercritical CO2 extraction. ULTRASONICS SONOCHEMISTRY 2011; 18:318-326. [PMID: 20634117 DOI: 10.1016/j.ultsonch.2010.06.011] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2010] [Revised: 06/21/2010] [Accepted: 06/24/2010] [Indexed: 05/29/2023]
Abstract
A wide spectrum of phytochemicals could be isolated from sage (Salvia officinalis L.) using different extraction or distillation technique: the supercritical fluid extraction (SFE), the volatiles compounds (monoterpenes and sesquiterpenes) isolation using hydrodistillation or higher molecular compounds with Soxhlet extraction or ultrasound-assisted extraction. The combination of ultrasound-assisted extraction followed by re-extraction of obtained extract with supercritical CO(2) was performed in this study. The goal of performed investigation was to concentrate diterpenes present in sage extract which are generally considered to be responsible for antioxidant activity of extracted compounds. The fractionation using the supercritical CO(2), and different combination of the ultrasound-assisted solvent extractions (water-ethanol mixture or only water) followed by supercritical CO(2) re-extraction of obtained extract or treated plant material were analyzed and compared. Based on the results of these investigations it could be proposed the best extraction procedure: the ultrasound pretreatment of plant material with distilled water and re-extraction of plant material (residue) using supercritical CO(2). That procedure gives two valuable products: the ultrasound extract which is rich in sugars and possess the immunomodulatory activity and supercritical extract which is rich in diterpenes and sesquiterpenes.
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Affiliation(s)
- Sandra B Glisic
- Department of Organic Chemical Technology, Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11120 Belgrade, Serbia.
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Glisic S, Ivanovic J, Ristic M, Skala D. Extraction of sage (Salvia officinalis L.) by supercritical CO2: Kinetic data, chemical composition and selectivity of diterpenes. J Supercrit Fluids 2010. [DOI: 10.1016/j.supflu.2009.11.009] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Cargnin ST, de Matos Nunes J, Haas JS, Baladão LF, Cassel E, Vargas RF, Rech SB, von Poser GL. Supercritical fluid extraction and high performance liquid chromatographic determination of benzopyrans and phloroglucinol derivative in Hypericum polyanthemum. J Chromatogr B Analyt Technol Biomed Life Sci 2010; 878:83-7. [DOI: 10.1016/j.jchromb.2009.11.012] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2009] [Revised: 10/26/2009] [Accepted: 11/05/2009] [Indexed: 10/20/2022]
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Kusari S, Zühlke S, Borsch T, Spiteller M. Positive correlations between hypericin and putative precursors detected in the quantitative secondary metabolite spectrum of Hypericum. PHYTOCHEMISTRY 2009; 70:1222-32. [PMID: 19683774 DOI: 10.1016/j.phytochem.2009.07.022] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2009] [Revised: 07/14/2009] [Accepted: 07/15/2009] [Indexed: 05/16/2023]
Abstract
A spectrum of eight pharmacologically important secondary compounds, all putatively belonging to the polyketide pathway (hypericin, pseudohypericin, emodin, hyperforin, hyperoside, rutin, quercetin, and quercitrin) were analyzed in several hypericin-producing species of Hypericum by LC-MS/MS. Different organs such as leaves, stems and roots of wild-grown plants of Hypericum hirsutum L., Hypericum maculatum Crantz s. l., Hypericum montanum L., Hypericum tetrapterum Fr. collected in Slovakia and of Hypericum perforatum L. collected in India were examined individually. Highest contents of hypericin, pseudohypericin, and emodin were found in H. montanum, suggesting that there are alternative species to H. perforatum with high pharmaceutical value. Amounts of hyperforin and quercetin were highest in H. perforatum, whereas highest contents of hyperoside and quercitrin were found in H. maculatum. A significant positive correlation between hypericin and pseudohypericin as well as between hypericin and emodin was observed by Kruskal's multidimensional scaling (MDS), indicating a parallel enhancement of emodin as a common precursor in the biosynthetic pathways of hypericin and pseudohypericin. Furthermore, MDS combined with principal component analysis (PCA) revealed strong correlations in the occurrence of pseudohypericin and emodin, pseudohypericin and quercitrin, hypericin and quercitrin, emodin and quercitrin, hyperoside and quercitrin, rutin and quercetin, and, hyperforin and quercetin. On the other hand, rutin showed a negative correlation with emodin as well as with quercitrin. Furthermore, hierarchical agglomerative cluster analysis (HACA) clustered hypericin and pseudohypericin, grouping emodin at equal distance from both. Considerable infraspecific variability in secondary compound spectrum and load of different populations of H. maculatum from Slovakia underscores the need for detailed studies of genotypic variation and environmental factors in relation to polyketide biosynthesis and accumulation.
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Affiliation(s)
- Souvik Kusari
- Institut für Umweltforschung (INFU), Technische Universität Dortmund, Otto-Hahn-Strasse 6, D-44221 Dortmund, Germany
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