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Kim J, Pälijärvi M, Karonen M, Salminen JP. Distribution of enzymatic and alkaline oxidative activities of phenolic compounds in plants. PHYTOCHEMISTRY 2020; 179:112501. [PMID: 32877871 DOI: 10.1016/j.phytochem.2020.112501] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 08/11/2020] [Accepted: 08/18/2020] [Indexed: 06/11/2023]
Abstract
In this study, we screened 287 plant tissue samples from 175 plant species for their phenolic profiles. The samples were oxidized enzymatically in planta or at high pH in vitro to determine how these two oxidative conditions would alter the initial polyphenol profiles of the plant. Compounds that contained a pyrogallol or dihydroxyphenethyl group were highly active at pH 10. Enzymatic oxidation favored compounds that contained a catechol group, whereas compounds containing a pyrogallol group or monohydroxysubstituted phenolic moieties at most were oxidized less frequently. This study gives a broad overview of the distribution and alkaline oxidative activities of water-soluble phenolic compounds in plants as well as the enzymatic oxidative activities of various plant tissues.
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Affiliation(s)
- Jorma Kim
- Natural Chemistry Research Group, Department of Chemistry, University of Turku, FI-20014, Turku, Finland.
| | - Maija Pälijärvi
- Natural Chemistry Research Group, Department of Chemistry, University of Turku, FI-20014, Turku, Finland.
| | - Maarit Karonen
- Natural Chemistry Research Group, Department of Chemistry, University of Turku, FI-20014, Turku, Finland.
| | - Juha-Pekka Salminen
- Natural Chemistry Research Group, Department of Chemistry, University of Turku, FI-20014, Turku, Finland.
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Jiang MY, Lu H, Pu XY, Li YH, Tian K, Xiong Y, Wang W, Huang XZ. Laxative Metabolites from the Leaves of Moringa oleifera. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:7850-7860. [PMID: 32631058 DOI: 10.1021/acs.jafc.0c01564] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Three new flavonoids, quercetin-3-O-6-[methyl-(S)-3-hydroxy-3-methylglutaroyl(1→6]-β-d-glucopyranoside (1), kaempferol-3-O-[methyl-(S)-3-hydroxy-3-methylglutaroyl(1→6)]-β-d-glucopyranoside (2), and quercetin-3-O-6-[(E)-4-methoxy-5-methylhexa-2,4-dienoatyl(1→6)]-β-d-glucopyranoside (3), and two new alkaloids, 5-dehydroxymethyl-pyrrolemarumine 4″-O-α-l-rhamnopyranoside (4) and N1-methyl-N2-((4-O-α-l-rhamnopyranoside)benzyl) oxalamide (5), together with 45 known compounds (6-50) were isolated from the leaves of Moringa oleifera Lam. Among those compounds, 1-octacosanol (50), a straight-chain 28-carbon alcohol, exhibited good activity against diphenoxylate-induced constipation in mice, which is obtained as a laxative constituent from the plant for the first time. In order to have an accurate understanding of the content of compound 50, a quantification with gas chromatography-tandem mass spectrometry (GC-MS/MS) was carried out. The anti-inflammatory and α-glucosidase inhibitory activity of some compounds also was assessed.
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Affiliation(s)
- Meng-Yuan Jiang
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission and Ministry of Education, Yunnan Minzu University, Kunming 650504, Yunnan People's Republic of China
| | - Huai Lu
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission and Ministry of Education, Yunnan Minzu University, Kunming 650504, Yunnan People's Republic of China
| | - Xiao-Yun Pu
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission and Ministry of Education, Yunnan Minzu University, Kunming 650504, Yunnan People's Republic of China
| | - Yan-Hong Li
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission and Ministry of Education, Yunnan Minzu University, Kunming 650504, Yunnan People's Republic of China
| | - Kai Tian
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission and Ministry of Education, Yunnan Minzu University, Kunming 650504, Yunnan People's Republic of China
| | - Yong Xiong
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission and Ministry of Education, Yunnan Minzu University, Kunming 650504, Yunnan People's Republic of China
| | - Wei Wang
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission and Ministry of Education, Yunnan Minzu University, Kunming 650504, Yunnan People's Republic of China
| | - Xiang-Zhong Huang
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission and Ministry of Education, Yunnan Minzu University, Kunming 650504, Yunnan People's Republic of China
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Krzyżanowska-Kowalczyk J, Pecio Ł, Mołdoch J, Ludwiczuk A, Kowalczyk M. Novel Phenolic Constituents of Pulmonaria officinalis L. LC-MS/MS Comparison of Spring and Autumn Metabolite Profiles. Molecules 2018; 23:E2277. [PMID: 30200600 PMCID: PMC6225171 DOI: 10.3390/molecules23092277] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 08/25/2018] [Accepted: 09/04/2018] [Indexed: 12/04/2022] Open
Abstract
Lungwort (Pulmonaria officinalis L., Boraginaceae) is considered to possess therapeutic properties and it has been traditionally used as a remedy against various lung disorders in many countries. Nevertheless, very few data concerning its phytochemical composition are available. This research aims to provide a detailed description of specialized metabolites from the aerial parts of lungwort. Nine previously undescribed and 36 known phenolic compounds were detected in the 50% methanolic extract. Following multistep preparative procedures, structures of newly discovered compounds were determined using one- and two-dimensional techniques of NMR spectroscopy. Among the identified compounds were caffeic acid esters with aliphatic hydroxycarboxylic acids, conjugates of dicaffeic acid with rosmarinic acid, and previously unknown isomers of isosalvianolic acid A and yunnaneic acid E, as well as other lignans. Concentrations of all identified phenolic derivatives in the investigated herbal material were estimated using a method based on liquid chromatography with high-resolution mass spectrometry detection. Seasonal changes in the concentration of metabolites were also investigated using targeted and untargeted metabolomics techniques.
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Affiliation(s)
- Justyna Krzyżanowska-Kowalczyk
- Department of Biochemistry and Crop Quality, Institute of Soil Science and Plant Cultivation-State Research Institute, Czartoryskich 8, 24-100 Puławy, Poland.
| | - Łukasz Pecio
- Department of Biochemistry and Crop Quality, Institute of Soil Science and Plant Cultivation-State Research Institute, Czartoryskich 8, 24-100 Puławy, Poland.
| | - Jarosław Mołdoch
- Department of Biochemistry and Crop Quality, Institute of Soil Science and Plant Cultivation-State Research Institute, Czartoryskich 8, 24-100 Puławy, Poland.
| | - Agnieszka Ludwiczuk
- Department of Pharmacognosy with Medicinal Plant Unit, Medical University of Lublin, Chodzki Str.1, 20-093 Lublin, Poland.
| | - Mariusz Kowalczyk
- Department of Biochemistry and Crop Quality, Institute of Soil Science and Plant Cultivation-State Research Institute, Czartoryskich 8, 24-100 Puławy, Poland.
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Huang J, Zhang Y, Dong L, Gao Q, Yin L, Quan H, Chen R, Fu X, Lin D. Ethnopharmacology, phytochemistry, and pharmacology of Cornus officinalis Sieb. et Zucc. JOURNAL OF ETHNOPHARMACOLOGY 2018; 213:280-301. [PMID: 29155174 DOI: 10.1016/j.jep.2017.11.010] [Citation(s) in RCA: 108] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Revised: 11/04/2017] [Accepted: 11/09/2017] [Indexed: 05/22/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Cornus officinalis (Cornaceae), known in Chinese as "Shanzhuyu," is a frequently used traditional Chinese medicine. It tastes sour and is astringent and slightly warm in nature. Its fruits have long been used to treat kidney deficiency, high blood pressure, waist and knee pain, dizziness, tinnitus, impotence, spermatorrhea, menorrhagia, and other diseases in China. The main distribution areas are Shanxi and Gansu. AIM OF THE STUDY This review focused on the ethnopharmacological uses of the herb. We also focus on the phytochemical, pharmacological, and toxicological studies on C. officinalis. The recent analytical methods developed for the quality control of the herb's constituents are also reviewed. Additionally, future trends and prospects in the study of this herb are proposed. MATERIALS AND METHODS Information on C. officinalis was gathered by searching the internet (PubMed, ScienceDirect, Wiley, ACS, CNKI, Scifinder, Web of Science, Google Scholar, and Baidu Scholar) and libraries. RESULTS This review compiled the ethnopharmacological uses, including the classic prescriptions and historical applications. Approximately 300 chemical compounds have been isolated and identified from C. officinalis. The major active components of the plant are organic acids and iridoids, among which morroniside and loganin have been extensively investigated. The fruit of the plant has been used in treating many diseases in traditional medicine. Scientific studies indicated the herb's wide range of pharmacological activities, such as hepatic and renal protection, antidiabetes activity, cardioprotection, antioxidation, neuroprotection, antitumor activity, anti-inflammation, analgesic effects, antiaging activity, antiamnesia, antiosteoporosis, and immunoregulation. The analytical methods developed for the quantitative and qualitative determination of various compounds in the herb were further reviewed. CONCLUSIONS In this paper, we reviewed various studies conducted on C. officinalis, especially in areas of its ethnopharmacological use, as well as on its phytochemistry, pharmacology, and modern analytical methods used. Some of the herb's ethnomedical indications have been confirmed by the herb's pharmacological effects, such as its hepatic and renal protection and the antidiabetic effects. In particular, the crude extract and its chemical composition have exerted good therapeutic effect in diabetic treatment. C. officinalis entails additional attention on its pharmacological effects and drug development to expand its effective use clinically. Many advanced technologies are used for quality testing, but the detection component is exceedingly scarce for synthetically evaluating the quality of C. officinalis herbs. Thus, further research is necessary to investigate the quality control and toxicology of the plant, to further elucidate its clinical use, and to control herbal quality.
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Affiliation(s)
- Jun Huang
- School of Pharmacy, Ningxia Medical University, Yinchuan 750004, China
| | - Yiwei Zhang
- School of Basic Medical Sciences, Ningxia Medical University, Yinchuan 750004, China
| | - Lin Dong
- School of Pharmacy, Ningxia Medical University, Yinchuan 750004, China
| | - Qinghan Gao
- School of Public Health, Ningxia Medical University, Yinchuan 750004, China
| | - Lei Yin
- School of Pharmacy, Ningxia Medical University, Yinchuan 750004, China
| | - Hongfeng Quan
- School of Public Health, Ningxia Medical University, Yinchuan 750004, China
| | - Rong Chen
- School of Pharmacy, Ningxia Medical University, Yinchuan 750004, China
| | - Xueyan Fu
- School of Pharmacy, Ningxia Medical University, Yinchuan 750004, China; Ningxia Engineering and Technology Research Center for Modernization of Hui Medicine, Yinchuan 750004, China; Key Laboratory of Hui Ethnic Medicine Modernization, Ministry of Education (Ningxia Medical University), Yinchuan 750004, China.
| | - Dingbo Lin
- Oklahoma State University, United States.
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Multiple response surface optimization for effects of processing parameters on physicochemical and bioactive properties of apple juice inoculated with Zygosaccharomyces rouxii and Zygosaccharomyces bailii. Lebensm Wiss Technol 2016. [DOI: 10.1016/j.lwt.2016.01.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Antiproliferative Effects of New Dimeric Ellagitannin from Cornus alba in Prostate Cancer Cells Including Apoptosis-Related S-Phase Arrest. Molecules 2016; 21:137. [PMID: 26805810 PMCID: PMC6273526 DOI: 10.3390/molecules21020137] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Revised: 01/16/2016] [Accepted: 01/18/2016] [Indexed: 11/17/2022] Open
Abstract
Activity-guided isolation of 80% acetone extract of Cornusalba, which is traditionally used as an anti-inflammatory, hemostatic and diuretic in Korea, yielded one novel compound, tentatively designated cornusiin H (13), together with 12 known compounds. The known compounds included four flavonoids (catechin (1), quercetin-3-O-β-d-glucuronide (2), quercetin-3-O-β-d-glucopyranoside (3), kaempferol-3-O-β-d-glucopyranoside (4)) and eight hydrolysable tannins (gallic acid (5), 2,6-di-O-galloyl-hamamelofuranoside (6), 2-galloyl-4-caffeoyl-l-threonic acid (7) 2,3-di-O-galloyl-4-caffeoyl-l-threonic acid (8), 1,2,3,4,6-penta-O-galloyl-β-d-glucopyranoside (9), cornusiin B (10), cornusiin A (11) and camptothin B (12)). All compounds exhibited potent 1,1-diphenyl-2-picrylhydrazyl (DPPH)-free radical scavenging activity. Especially, the radical scavenging activities of 6 and 9–13 were higher than that of vitamin C. Compounds 9, 11, 12 and 13 inhibited the production of nitric oxide (NO) in lipopolysaccharide-stimulated RAW264.7 cells to the same degree as NG-Monomethyl-l-arginine (l-NMMA). When the antiproliferative effects of the isolated compounds were assessed in prostate cancer cells, the dimeric ellagitannins (11–13) selectively inhibited LNCaP hormone-dependent prostate cancer cells. Flow cytometry analysis indicated that the dimeric ellagitannins induced apoptosis and S-phase arrest. These results suggest that dimeric ellagitannins from Cornusalba can be developed as functional materials or herbal medicines for prostate tumors such as benign prostate hyperplasia and early-stage prostate cancer.
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Forman V, Haladová M, Grančai D, Ficková M. Antiproliferative Activities of Water Infusions from Leaves of Five Cornus L. Species. Molecules 2015; 20:22546-52. [PMID: 26694338 PMCID: PMC6332000 DOI: 10.3390/molecules201219786] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Revised: 11/20/2015] [Accepted: 11/24/2015] [Indexed: 11/23/2022] Open
Abstract
Cornaceae plants are known for their edible berries, and their leaves are used as tea. In the present study aqueous leaf extracts from Cornus mas (CM), C. alba (CA), C. flaviramea (CF), C. kousa (CK), and C. officinalis (CO) were tested for their antiproliferative activity in human breast cancer cells (MCF-7). Dose- (50–750 µg/mL) and time (24, 48, 72 h)-dependent antiproliferative effects were measured by WST-1, and correlated with the content of flavonoids (FL), total hydroxycinnamic derivatives (THD), total polyphenols (TP) and tannins (T). Extracts induced time dependent decreases in cell survival; CA, CO and CM were the most effective (11.2%, 10.3% and 11.1%, after 72 h). The ED50 (effective dose) values were similar for all extracts and times tested. The THD and TP were identical in all samples, while a two-fold higher T content was present in CK and CO, and of FL in CF. The maximal effects (% of surviving cells) negatively correlated with the T and TP levels, and positively with FL and THD. The results demonstrate the significant antiproliferative effects of the tested water extracts in MCF-7 cells, in which CA, CO and CM are the most effective; and the effectiveness is related to the T and TP contents.
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Affiliation(s)
- Vladimír Forman
- Department of Pharmacognosy and Botany, Faculty of Pharmacy, Comenius University in Bratislava, Odbojárov 10, Bratislava 832 32, Slovakia.
| | - Mária Haladová
- Department of Pharmacognosy and Botany, Faculty of Pharmacy, Comenius University in Bratislava, Odbojárov 10, Bratislava 832 32, Slovakia.
| | - Daniel Grančai
- Department of Pharmacognosy and Botany, Faculty of Pharmacy, Comenius University in Bratislava, Odbojárov 10, Bratislava 832 32, Slovakia.
| | - Mária Ficková
- Laboratory of Cell Endocrinology, Institute of Experimental Endocrinology, Slovak Academy of Sciences, Vlárska 3, Bratislava 833 06, Slovakia.
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9
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Kuczkowiak U, Petereit F, Nahrstedt A. Hydroxycinnamic Acid Derivatives Obtained from a Commercial Crataegus Extract and from Authentic Crataegus spp. Sci Pharm 2014; 82:835-46. [PMID: 26171328 PMCID: PMC4475804 DOI: 10.3797/scipharm.1404-02] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2014] [Accepted: 08/21/2014] [Indexed: 11/22/2022] Open
Abstract
Eleven hydroxycinnamic acid derivatives were isolated from a 70% methanolic Crataegus extract (Crataegi folium cum flore) and partly verified and quantified for individual Crataegus species (C. laevigata, C. monogyna, C. nigra, C. pentagyna) by HPLC: 3-O-(E)-p-coumaroylquinic acid (1), 5-O-(E)-p-coumaroyl-quinic acid (2), 4-O-(E)-p-coumaroylquinic acid (3), 3-O-(E)-caffeoylquinic acid (4), 4-O-(E)-caffeoylquinic acid (5), 5-O-(E)-caffeoylquinic acid (6), 3,5-di-O-(E)-caffeoylquinic acid (7), 4,5-di-O-(E)-caffeoylquinic acid (8), (-)-2-O-(E)-caffeoyl-L-threonic acid (9), (-)-4-O-(E)-caffeoyl-L-threonic acid (10), and (-)-4-O-(E)-p-coumaroyl-L-threonic acid (11). Further, (-)-2-O-(E)-caffeoyl-D-malic acid (12) was isolated from C. submollis and also identified for C. pentagyna and C. nigra by co-chromatography. The isolates 10 and 11 were not found in the authentic fresh specimen, indicating that they may be formed during extraction by acyl migration from the 2-O-acylderivatives. Also, 9 and 11 are described here for the first time. All structures were assigned on the basis of their spectroscopic data (1H-, 13C-NMR, MS, optical rotation).
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Affiliation(s)
- Ulrich Kuczkowiak
- Univ. of Münster, Inst. of Pharm. Biology and Phytochemistry, Corrensstr. 48, D-48149 Münster, Germany
| | - Frank Petereit
- Univ. of Münster, Inst. of Pharm. Biology and Phytochemistry, Corrensstr. 48, D-48149 Münster, Germany
| | - Adolf Nahrstedt
- Univ. of Münster, Inst. of Pharm. Biology and Phytochemistry, Corrensstr. 48, D-48149 Münster, Germany
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Parveen I, Wilson T, Donnison IS, Cookson AR, Hauck B, Threadgill MD. Potential sources of high value chemicals from leaves, stems and flowers of Miscanthus sinensis 'Goliath' and Miscanthus sacchariflorus. PHYTOCHEMISTRY 2013; 92:160-7. [PMID: 23663930 DOI: 10.1016/j.phytochem.2013.04.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2012] [Revised: 03/20/2013] [Accepted: 04/08/2013] [Indexed: 05/08/2023]
Abstract
Society demands chemicals from sustainable sources. Identification of commercially important chemicals in crops increases value in biorefineries and reduces reliance on petrochemicals. Miscanthus sinensis and Miscanthus sacchariflorus are high-yielding distinct plants, which are sources of high-value chemicals and bioethanol through fermentation. Cinnamates in leaves, stems and flowers were analysed by LC-ESI-MS(n). Free phenols were extracted and separated chromatographically. More than twenty hydroxycinnamates were identified by UV and LC-ESI-MS(n). Several cinnamate hexosides were detected in the M. sinensis flower and in M. sacchariflorus (leaf and stem). Hydroxybenzoic acids and their hexosides were observed in leaf and stem of M. sacchariflorus. Higher concentrations of 3-feruloylquinic acid were observed in M. sacchariflorus stem, suggesting a role in cell-wall biosynthesis. This technique can be used to screen plants in a mapping family to identify genotypes/species with high concentrations of phenols. Plants with low concentrations of antimicrobial phenols may be good feedstocks for fermentation.
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Affiliation(s)
- Ifat Parveen
- Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Gogerddan, Aberystwyth SY23 3EB, UK.
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Substrate-like water soluble lipase inhibitors from Filipendula kamtschatica. Bioorg Med Chem Lett 2012; 22:6410-2. [DOI: 10.1016/j.bmcl.2012.08.055] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2012] [Revised: 08/07/2012] [Accepted: 08/16/2012] [Indexed: 11/21/2022]
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Gao J, Sun CR, Yang JH, Shi JM, Du YG, Zhang YY, Li JH, Wan HT. Evaluation of the hepatoprotective and antioxidant activities of Rubus parvifolius L. J Zhejiang Univ Sci B 2011; 12:135-42. [PMID: 21265045 DOI: 10.1631/jzus.b1000117] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The hepatoprotective and antioxidant activities of the n-butanol extract of Rubus parvifolius L. (RPL), a widely used medicinal plant, were evaluated. Results demonstrated that RPL extract possessed pronounced hepatoprotective effects against carbon tetrachloride (CCl(4))-induced hepatic injury in mice, which was at least partially attributed to its strong antioxidant capacity. Treatment with RPL extract markedly attenuated the increases in serum alanine aminotransferase (ALT) and aspartate aminotransferase (AST) levels caused by CCl(4) intoxication. It also significantly prevented the decrease in superoxide dismutase (SOD) activity and the increase in malondialdehyde (MDA) content of liver tissue. Meanwhile, histopathological changes of hepatic damage were also remarkably ameliorated. Phytochemical analysis based on high-performance liquid chromatography/tandem mass spectrometry (HPLC-MS/MS) revealed the presence of various phenolic compounds, including caffeic acid conjugates, ellagic acid glycosides, and flavonol glycosides, which might be responsible for the hepatoprotective and antioxidant activities of RPL.
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Affiliation(s)
- Jie Gao
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
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Parveen I, Winters A, Threadgill MD, Hauck B, Morris P. Extraction, structural characterisation and evaluation of hydroxycinnamate esters of orchard grass (Dactylis glomerata) as substrates for polyphenol oxidase. PHYTOCHEMISTRY 2008; 69:2799-806. [PMID: 18929376 DOI: 10.1016/j.phytochem.2008.08.019] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2008] [Revised: 08/22/2008] [Accepted: 08/26/2008] [Indexed: 05/13/2023]
Abstract
Polyphenol oxidase (PPO) activity has been reported in orchard grass (Dactylis glomerata); however, to date, no endogenous substrates have been identified. In the present study, we report the isolation and structural elucidation of PPO substrates in this species. The free phenol fraction was extracted, separated by reverse-phase chromatography and six potential substrates, including two hydroxycinnamate esters, were identified by UV spectrometry, electrospray ionisation-tandem mass spectrometry (LC-ESI-MS(n)) and 1D and 2D NMR analyses ((1)H NMR, (13)C NMR, DEPT, COSY, HMQC and HMBC). Furthermore, three caffeoylquinic acids (3-CQA, 4-CQA and 5-CQA) were identified by comparison of their spectral data (ESI-MS) with those of known compounds and literature data. Five of these compounds were demonstrated to be substrates for orchard grass PPO.
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Affiliation(s)
- Ifat Parveen
- Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Plas Gogerddan, Aberystwyth, Wales SY23 3EB, UK.
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Shai LJ, McGaw LJ, Aderogba MA, Mdee LK, Eloff JN. Four pentacyclic triterpenoids with antifungal and antibacterial activity from Curtisia dentata (Burm.f) C.A. Sm. leaves. JOURNAL OF ETHNOPHARMACOLOGY 2008; 119:238-244. [PMID: 18662765 DOI: 10.1016/j.jep.2008.06.036] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2008] [Revised: 06/23/2008] [Accepted: 06/27/2008] [Indexed: 05/26/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Curtisia dentata is used in southern Africa to treat various diseases of bacterial and fungal origin in humans and animals to such a degree that the species is vulnerable and declining [Dold, A.R., Cocks, M.L., 2001. Traditional veterinary medicine in the Alice district of the Eastern Cape Province, South Africa. South African Journal of Science 97, 375-379]. Preliminary studies indicated good activity against Candida albicans. AIM OF THE STUDY The phytochemistry and antimicrobial activity of this plant species has not been extensively investigated, and a closer examination of the compounds responsible for antimicrobial activity was warranted. MATERIALS AND METHODS Broth microdilution assay and bioautography were used to evaluate antibacterial and antifungal activity in Curtisia dentata leaf extracts and fractions. Bioassay-directed fractionation using column chromatography yielded four compounds characterised by spectroscopic methods. RESULTS Lupeol (1), betulinic acid (2), ursolic acid (3) and 2alpha-hydroxyursolic acid (4) were isolated from Curtisia dentata leaves. Betulinic acid, ursolic acid and 2alpha-hydroxyursolic acid appreciably inhibited fungal growth with MIC values ranging from 8 to 63mug/mL. CONCLUSIONS The isolation of four antibacterial and antifungal triterpenoids is reported for the first time from Curtisia dentata. This study provides information on the antimicrobial compounds of this species, as well as a preliminary rationale for the use in traditional South African medicine.
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Affiliation(s)
- L J Shai
- Phytomedicine Programme, Department of Paraclinical Sciences, Faculty of Veterinary Science, University of Pretoria, Private Bag X04, Onderstepoort, 0110 Pretoria, South Africa
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Choudhury RP, Kumar A, Garg AN. Analysis of Indian mint (Mentha spicata) for essential, trace and toxic elements and its antioxidant behaviour. J Pharm Biomed Anal 2006; 41:825-32. [PMID: 16504451 DOI: 10.1016/j.jpba.2006.01.048] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2005] [Revised: 01/19/2006] [Accepted: 01/23/2006] [Indexed: 11/20/2022]
Abstract
Mint, belonging to the genus Mentha in the family Labiatae (Lamiaceae) is pungent in taste with post digestive effects and hot potency. Ten samples of mint leaves, collected from four different locations in North-West parts of India (Roorkee, Dehradun, Baghpat and Uttarkashi) were analysed for seven minor (Al, Na, K, Ca, Cl, Mg, and P) and 20 trace (As, Au, Ba, Br, Co, Cr, Cs, Eu, Fe, Hf, Hg, La, Mn, Rb, Sb, Sc, Se, Sn, Th and Zn) elements by instrumental neutron activation analysis (INAA). Also Ni, Cu and Cd were determined by atomic absorption spectrophotometry (AAS). Samples along with reference materials (RMs) and synthetic primary standard were irradiated at approximately 10(13) n cm-2s-1 and its gamma-activity was measured using HPGe detector and MCA system. Most elements were found in widely varying amounts depending on the location, e.g. Na (0.21-0.86 mg/g), K (12.4-53.3 mg/g) and Ca (5.82-16.8 mg/g) whereas mean contents of other nutrient elements in mint were: Fe (108+/-22 microg/g), Mg (4.83+/-0.92 mg/g), Mn (53.5+/-9.6 microg/g), P (3.88+/-0.94 mg/g), Cu (16.9+/-1.8 microg/g), Zn (21.0+/-4.7 microg/g) and Se (0.18+/-0.03 microg/g). Further, DPPH free radical scavenging activity test in diethyl ether extract showed 100% activity at approximately 40 microg/L suggesting it to be antioxidant in accordance with literature reports.
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Affiliation(s)
- R Paul Choudhury
- Department of Chemistry, Indian Institute of Technology, Roorkee 247667, India
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Vareed SK, Reddy MK, Schutzki RE, Nair MG. Anthocyanins in Cornus alternifolia, Cornus controversa, Cornus kousa and Cornus florida fruits with health benefits. Life Sci 2005; 78:777-84. [PMID: 16139847 DOI: 10.1016/j.lfs.2005.05.094] [Citation(s) in RCA: 113] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2005] [Accepted: 05/20/2005] [Indexed: 11/18/2022]
Abstract
The anthocyanins in native Cornus alternifolia, Cornus controversa, Cornus kousa and Cornus florida were quantified by HPLC and characterized by spectroscopic methods. The analyses of C. alternifolia and C. controversa revealed that both contained , and , respectively. Similarly, C. florida and C. kousa showed identical anthocyanin profiles with major anthocyanins as and cyanidin 3-O-glucoside (6), respectively. The amount of anthocyanins , and in C. alternifolia and C. controversa were 8.21, 8.44 and 0.02 mg; and 7.74, 5.92, and 0.02 mg/g of fresh fruits, respectively. The anthocyanins and in C. kousa and C. florida were 0.02 and 0.16 mg; and 0.62 and 0.03 mg/g fresh fruits, respectively. Anthocyanins and were not studied earlier for their inhibition of lipid peroxidation, cyclooxygenase enzymes (COX-1 and COX-2), and tumor cell proliferation. At 50 microg/mL, anthocyanins and inhibited lipid peroxidation by 71% and 68%, respectively. Similarly, they inhibited COX-1 enzymes by 39% and 49% and COX-2 enzyme by 54% and 48%, respectively, at 100 microg/mL. Anthocyanin displayed 50% growth inhibition (IC(50)) at 21, 25, 50, 60, and 75 microg/mL, against HCT-116 (colon), MCF-7 (breast), NCI-H460 (lung), SF-268 (central nervous system CNS), and AGS (stomach) human tumor cell lines, respectively. Similarly, IC(50) values for anthocyanin were 38, 30, 76, 100, and 100 microg/mL against HCT-116, MCF-7, NCI H460, SF-268, and AGS, respectively. This is the first report of the quantification and biological activities of anthocyanins in C. alternifolia, C. kousa and C. florida in addition to the anthocyanins not previously quantified in C. controversa.
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Affiliation(s)
- Shaiju K Vareed
- Bioactive Natural Products and Phytoceuticals, Department of Horticulture and National Food Safety and Toxicology Center, Michigan State University, East Lansing, MI 48824, USA
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Fiamegos YC, Nanos CG, Vervoort J, Stalikas CD. Analytical procedure for the in-vial derivatization—extraction of phenolic acids and flavonoids in methanolic and aqueous plant extracts followed by gas chromatography with mass-selective detection. J Chromatogr A 2004; 1041:11-8. [PMID: 15281249 DOI: 10.1016/j.chroma.2004.04.041] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
An in-vial simple method for the combined derivatization and extraction of phenolic acids and flavonoids from plant extracts and their direct determination with GC-MS, is described. The method is taking advantage of the beneficial potentials of phase transfer catalysis (PTC). Catalysts in soluble and polymer-bound form were tested with the latter being the format of choice due to its high reaction yield and facile separation from the rest of the reaction system. Optimization of experimental conditions was established. Chromatographic separation of eight phenolic acids and four flavonoids methylated via the PTC derivatization step was achieved in 45 min. The detection limits for the described GC-MS(SIM) method of analysis ranged between 2 and 40 ng/ml whereas limits of quantitation fall in the range 5-118 ng/ml, with flavonoids accounting for the lowest sensitivity due to their multiple reaction behavior. Four methanolic extracts from Tilia europea, Urtica dioica, Mentha spicata and Hypericum perforatum grown wild in north-western Greece and four aquatic infusions from commercially available Mentha spicata, Origanum dictamnus, Rosemarinus officinalis and Sideritis cretica were analyzed. Good trueness of the method was demonstrated as no matrix effects were found for the analytes concerned.
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Affiliation(s)
- Yiannis C Fiamegos
- Laboratory of Biochemistry, Wageningen University, 6703 HA Wageningen, The Netherlands
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