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Mocniak LE, Elkin KR, Dillard SL, Bryant RB, Soder KJ. Building comprehensive glucosinolate profiles for brassica varieties. Talanta 2022; 251:123814. [DOI: 10.1016/j.talanta.2022.123814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 07/20/2022] [Accepted: 08/02/2022] [Indexed: 10/16/2022]
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Agerbirk N, Pattison DI, Mandáková T, Lysak MA, Montaut S, Staerk D. Ancient Biosyntheses in an Oil Crop: Glucosinolate Profiles in Limnanthes alba and Its Relatives (Limnanthaceae, Brassicales). JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:1134-1147. [PMID: 35061395 DOI: 10.1021/acs.jafc.1c07299] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The glucosinolate (GSL) profiles of four Limnanthaceae species, including the oil crop Limnanthes alba (meadowfoam), were investigated by an ultrahigh-performance liquid chromatography-quadrupole time-of-flight tandem mass spectrometry (UHPLC-QToF-MS/MS) analysis of desulfoGSLs after desulfation of native GSLs, supplemented by NMR of desulfated 2-hydroxy-2-methylpropylGSL and 3-methoxybenzylGSL. Leaves, roots, and seeds were investigated, providing an overview of biosynthetic capabilities in the genera Floerkea and Limnanthes. Methoxyl groups on benzylGSLs were in meta but not para positions; two 3,5-disubstituted benzylGSLs are tentatively proposed. 2-Hydroxy-2-methylpropylGSL was accompanied by an isomer that was not a previously reported GSL. The combined GSL profile of the family included GSLs derived from valine, leucine, isoleucine, phenylalanine, and tyrosine, and possibly methionine and tryptophan. Substituted indole GSLs and GSLs derived from chain-elongated amino acids or alanine were searched for but not detected. Hypothetic glycosides of GSLs were detected at low levels. Based on biochemical interpretation, we suggest biosynthetic schemes and gene families (CYP79C, GSOH) relevant for tailoring GSL profiles in Limnanthes crops.
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Affiliation(s)
- Niels Agerbirk
- Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark
| | - David I Pattison
- Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark
| | - Terezie Mandáková
- CEITEC─Central European Institute of Technology, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Martin A Lysak
- CEITEC─Central European Institute of Technology, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Sabine Montaut
- Biomolecular Sciences Programme, School of Natural Sciences, Laurentian University, 935 Ramsey Lake Road, Sudbury, Ontario P3E 2C6, Canada
| | - Dan Staerk
- Department of Drug Design and Pharmacology, University of Copenhagen, Jagtvej 162, 2100 Copenhagen, Denmark
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Agerbirk N, Matthes A, Erthmann PØ, Ugolini L, Cinti S, Lazaridi E, Nuzillard JM, Müller C, Bak S, Rollin P, Lazzeri L. Glucosinolate turnover in Brassicales species to an oxazolidin-2-one, formed via the 2-thione and without formation of thioamide. PHYTOCHEMISTRY 2018; 153:79-93. [PMID: 29886160 DOI: 10.1016/j.phytochem.2018.05.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 04/16/2018] [Accepted: 05/07/2018] [Indexed: 05/21/2023]
Abstract
Glucosinolates are found in plants of the order Brassicales and hydrolyzed to different breakdown products, particularly after tissue damage. In Barbarea vulgaris R.Br. (Brassicaceae), the dominant glucosinolate in the investigated "G-type" is glucobarbarin, (S)-2-hydroxy-2-phenylethylglucosinolate. Formation of the nitrile from glucobarbarin was observed in vitro, while a previously suggested thioamide (synonym thionamide) was not confirmed. Resedine (5-phenyl-1,3-oxazolidin-2-one) was detected after glucobarbarin hydrolysis in crushed B. vulgaris leaves and siliques, but not in intact parts. The abundance increased for several hours after completion of hydrolysis. The corresponding 1,3-oxazolidine-2-thione (OAT), with the common name barbarin, was also formed, and appeared to be the precursor of resedine. Addition of each of two non-endogenous OATs, (S)-5-ethyl-5-methylOAT and (R)-5-vinylOAT (R-goitrin), to a leaf homogenate resulted in formation of the corresponding 1,3-oxazolidin-2-ones (OAOs), confirming the metabolic connection of OAT to OAO. Formation of OAOs was inhibited by prior brief heating of the homogenate, suggesting enzyme involvement. We suggest the conversion of OATs to OAOs to be catalyzed by an enzyme ("oxazolidinethionase") responsible for turnover of OAT formed in intact plants. Resedine had been reported as an alkaloid from another species - Reseda luteola L. (Resedaceae) - naturally containing the glucosinolate glucobarbarin. However, resedine was not detected in intact R. luteola plants, but formed after tissue damage. The formation of resedine in two families suggests a broad distribution of putative OATases in the Brassicales; potentially involved in glucosinolate turnover that needs myrosinase activity as the committed step. In agreement with the proposed function of OATase, several candidate genes for myrosinases in glucosinolate turnover in intact plants were discovered in the B. vulgaris genome. We also suggest that biotechnological conversion of OATs to OAOs might improve the nutritional value of Brassicales protein. HPLC-MS/MS methods for detection of these glucobarbarin products are described.
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Affiliation(s)
- Niels Agerbirk
- Copenhagen Plant Science Center and Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark.
| | - Annemarie Matthes
- Copenhagen Plant Science Center and Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark
| | - Pernille Ø Erthmann
- Copenhagen Plant Science Center and Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark
| | - Luisa Ugolini
- Council for Agricultural Research and Economics, Research Centre for Cereal and Industrial Crops, Via di Corticella 133, 40128, Bologna, Italy
| | - Susanna Cinti
- Council for Agricultural Research and Economics, Research Centre for Cereal and Industrial Crops, Via di Corticella 133, 40128, Bologna, Italy
| | - Eleni Lazaridi
- Copenhagen Plant Science Center and Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark
| | - Jean-Marc Nuzillard
- Université de Reims Champagne-Ardenne and CNRS, Institut de Chimie Moléculaire de Reims, UMR 7312, SFR CAP'SANTE, F-51687 Reims, France
| | - Caroline Müller
- Department of Chemical Ecology, Bielefeld University, Universitätsstr. 25, 33615 Bielefeld, Germany
| | - Søren Bak
- Copenhagen Plant Science Center and Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark
| | - Patrick Rollin
- Université d'Orléans and CNRS, ICOA, UMR 7311, BP 6759, F-45067 Orléans, France
| | - Luca Lazzeri
- Council for Agricultural Research and Economics, Research Centre for Cereal and Industrial Crops, Via di Corticella 133, 40128, Bologna, Italy
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Carpenter EL, Le MN, Miranda CL, Reed RL, Stevens JF, Indra AK, Ganguli-Indra G. Photoprotective Properties of Isothiocyanate and Nitrile Glucosinolate Derivatives From Meadowfoam ( Limnanthes alba) Against UVB Irradiation in Human Skin Equivalent. Front Pharmacol 2018; 9:477. [PMID: 29867483 PMCID: PMC5962701 DOI: 10.3389/fphar.2018.00477] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Accepted: 04/23/2018] [Indexed: 11/13/2022] Open
Abstract
Exposure to ultraviolet B (UVB) irradiation of the skin leads to numerous dermatological concerns including skin cancer and accelerated aging. Natural product glucosinolate derivatives, like sulforaphane, have been shown to exhibit chemopreventive and photoprotective properties. In this study, we examined meadowfoam (Limnanthes alba) glucosinolate derivatives, 3-methoxybenzyl isothiocyanate (MBITC) and 3-methoxyphenyl acetonitrile (MPACN), for their activity in protecting against the consequences of UV exposure. To that end, we have exposed human primary epidermal keratinocytes (HPEKs) and 3D human skin reconstructed in vitro (EpiDermTM FT-400) to UVB insult and investigated whether MBITC and MPACN treatment ameliorated the harmful effects of UVB damage. Activity was determined by the compounds’ efficacy in counteracting UVB-induced DNA damage, matrix-metalloproteinase (MMP) expression, and proliferation. We found that in monolayer cultures of HPEK, MBITC and MPACN did not protect against a UVB-induced loss in proliferation and MBITC itself inhibited cell proliferation. However, in human reconstructed skin-equivalents, MBITC and MPACN decrease epidermal cyclobutane pyrimidine dimers (CPDs) and significantly reduce total phosphorylated γH2A.X levels. Both MBITC and MPACN inhibit UVB-induced MMP-1 and MMP-3 expression indicating their role to prevent photoaging. Both compounds, and MPACN in particular, showed activity against UVB-induced proliferation as indicated by fewer epidermal PCNA+ cells and prevented UVB-induced hyperplasia as determined by a reduction in reconstructed skin epidermal thickness (ET). These data demonstrate that MBITC and MPACN exhibit promising anti-photocarcinogenic and anti-photoaging properties in the skin microenvironment and could be used for therapeutic interventions.
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Affiliation(s)
- Evan L Carpenter
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, OR, United States
| | - Mai N Le
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, OR, United States
| | - Cristobal L Miranda
- Linus Pauling Institute, Oregon State University, Corvallis, OR, United States
| | - Ralph L Reed
- Linus Pauling Institute, Oregon State University, Corvallis, OR, United States
| | - Jan F Stevens
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, OR, United States.,Linus Pauling Institute, Oregon State University, Corvallis, OR, United States.,Molecular and Cellular Biology Program, Oregon State University, Corvallis, OR, United States
| | - Arup K Indra
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, OR, United States.,Linus Pauling Institute, Oregon State University, Corvallis, OR, United States.,Molecular and Cellular Biology Program, Oregon State University, Corvallis, OR, United States.,Knight Cancer Institute, Oregon Health & Science University, Portland, OR, United States.,Department of Dermatology, Oregon Health & Science University, Portland, OR, United States
| | - Gitali Ganguli-Indra
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, OR, United States.,Molecular and Cellular Biology Program, Oregon State University, Corvallis, OR, United States.,Knight Cancer Institute, Oregon Health & Science University, Portland, OR, United States
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Glucosinolates: Novel Sources and Biological Potential. REFERENCE SERIES IN PHYTOCHEMISTRY 2017. [DOI: 10.1007/978-3-319-25462-3_1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Slabaugh MB, Cooper LD, Kishore VK, Knapp SJ, Kling JG. Genes affecting novel seed constituents in Limnanthes alba Benth: transcriptome analysis of developing embryos and a new genetic map of meadowfoam. PeerJ 2015; 3:e915. [PMID: 26038713 PMCID: PMC4451031 DOI: 10.7717/peerj.915] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2015] [Accepted: 04/06/2015] [Indexed: 01/19/2023] Open
Abstract
The seed oil of meadowfoam, a new crop in the Limnanthaceae family, is highly enriched in very long chain fatty acids that are desaturated at the Δ5 position. The unusual oil is desirable for cosmetics and innovative industrial applications and the seed meal remaining after oil extraction contains glucolimnanthin, a methoxylated benzylglucosinolate whose degradation products are herbicidal and anti-microbial. Here we describe EST analysis of the developing seed transcriptome that identified major genes involved in biosynthesis and assembly of the seed oil and in glucosinolate metabolic pathways. mRNAs encoding acyl-CoA Δ5 desaturase were notably abundant. The library was searched for simple sequence repeats (SSRs) and single nucleotide polymorphisms (SNPs). Fifty-four new SSR markers and eight candidate gene markers were developed and combined with previously developed SSRs to construct a new genetic map for Limnanthes alba. Mapped genes in the lipid biosynthetic pathway encode 3-ketoacyl-CoA synthase (KCS), Δ5 desaturase (Δ5DS), lysophosphatidylacyl-acyl transferase (LPAT), and acyl-CoA diacylglycerol acyl transferase (DGAT). Mapped genes in glucosinolate biosynthetic and degradation pathways encode CYP79A, myrosinase (TGG), and epithiospecifier modifier protein (ESM). The resources developed in this study will further the domestication and improvement of meadowfoam as an oilseed crop.
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Affiliation(s)
- Mary B Slabaugh
- Department of Crop and Soil Science, Oregon State University , Corvallis, OR , United States of America
| | - Laurel D Cooper
- Department of Crop and Soil Science, Oregon State University , Corvallis, OR , United States of America ; Department of Botany and Plant Pathology, Oregon State University , Corvallis OR , United States of America
| | | | - Steven J Knapp
- Department of Plant Sciences, University of California-Davis , Davis, CA , United States of America
| | - Jennifer G Kling
- Department of Crop and Soil Science, Oregon State University , Corvallis, OR , United States of America
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Erşahin YŞ, Weiland JE, Zasada IA, Reed RL, Stevens JF. Identifying Rates of Meadowfoam (Limnanthes alba) Seed Meal Needed for Suppression of Meloidogyne hapla and Pythium irregulare in Soil. PLANT DISEASE 2014; 98:1253-1260. [PMID: 30699611 DOI: 10.1094/pdis-09-13-0967-re] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Meadowfoam (Limnanthes alba) is a commercial oilseed annual crop grown in Oregon. After extracting oil from seed, the remaining seed meal is rich in the secondary plant metabolite glucolimnanthin, which can be converted into pesticidal compounds such as 3-methoxybenzyl isothiocyanate (ITC) and 3-methoxyphenylacetonitrile (nitrile) in the presence of the enzyme myrosinase. In previous studies, we demonstrated that ITC and nitrile, produced by mixing freshly ground meadowfoam seed with meadowfoam seed meal, are toxic to the plant-parasitic nematode Meloidogyne hapla and the plant pathogen Pythium irregulare. In this study, we evaluated factors that might influence the implementation of meadowfoam seed meal into agricultural production systems for soilborne pathogen and nematode control. Rate-finding experiments demonstrated that a minimum 1.0% seed/seed meal formulation (wt/wt) was necessary to achieve nematode and pathogen suppression; seed meal alone was insufficient for complete control of M. hapla and stimulated the growth of P. irregulare. When this 1.0% seed/seed meal formulation was used, a greater soil amendment rate was required to cause 100% mortality of P. irregulare (1.0% wt/wt) than for M. hapla (0.5% wt/wt). In phytotoxicity experiments, soil amended with the 1.0% seed/seed meal formulation was consistently phytotoxic to wheat, cucumber, and tomato. However, phytotoxic effects were mitigated by a delayed planting into the amended soil. A final assay to monitor concentrations of ITC and nitrile in conjunction with assessing M. hapla and P. irregulare mortality was conducted over a 6-day period in soils amended at 0.5 and 1.0% (wt/wt) with the 1.0% seed/seed meal formulation. The response was rapid, with 100% mortality of both organisms within 2 h after exposure to amended soil. Concentrations of nitrile remained relatively constant over the 6-day period (approximately 0.017 and 0.032 mg/ml at 0.5 and 1.0% amendment rates, respectively), whereas ITC production increased rapidly and peaked 12 to 24 h after amendment (0.083 and 0.171 mg/ml at 0.5 and 1.0% amendment rates, respectively) before returning to near undetectable levels.
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Affiliation(s)
| | - Jerry E Weiland
- United States Department of Agriculture-Agricultural Research Services, Horticultural Crops Research Laboratory, Corvallis, OR 97330
| | - Inga A Zasada
- United States Department of Agriculture-Agricultural Research Services, Horticultural Crops Research Laboratory, Corvallis, OR 97330
| | - Ralph L Reed
- Department of Pharmaceutical Sciences, Oregon State University, Corvallis 97331
| | - J Fred Stevens
- Department of Pharmaceutical Sciences, Oregon State University, Corvallis 97331
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Intanon S, Reed RL, Stevens JF, Hulting AG, Mallory-Smith CA. Identification and phytotoxicity of a new glucosinolate breakdown product from Meadowfoam (Limnanthes alba) seed meal. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:7423-7429. [PMID: 24998843 DOI: 10.1021/jf5018687] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Meadowfoam (Limnanthes alba Hartw. ex Benth.) is an oilseed crop grown in the Willamette Valley of Oregon. Meadowfoam seed meal (MSM), a byproduct after oil extraction, contains 2-4% glucosinolate (glucolimnanthin). Activated MSM, produced by adding freshly ground myrosinase-active meadowfoam seeds to MSM, facilitates myrosinase-mediated formation of glucosinolate-derived degradation products with herbicidal activity. In the activated MSM, glucolimnanthin was converted into 3-methoxybenzyl isothiocyanate ("isothiocyanate") within 24 h and was degraded by day three. 3-Methoxyphenylacetonitrile ("nitrile") persisted for at least 6 days. Methoxyphenylacetic acid (MPAA), a previously unknown metabolite of glucolimnanthin, appeared at day three. Its identity was confirmed by LC-UV and high resolution LC-MS/MS comparisons with a standard of MPAA. Isothiocyanate inhibited lettuce germination 8.5- and 14.4-fold more effectively than MPAA and nitrile, respectively. Activated MSM inhibited lettuce germination by 58% and growth by 72% compared with the control. Results of the study suggest that MSM has potential uses as a pre-emergence bioherbicide.
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Affiliation(s)
- Suphannika Intanon
- Department of Crop and Soil Science, Oregon State University , 109 Crop Science Building, Corvallis, Oregon 97331, United States
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Zasada IA, Weiland JE, Reed RL, Stevens JF. Activity of meadowfoam (Limnanthes alba) seed meal glucolimnanthin degradation products against soilborne pathogens. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:339-45. [PMID: 22142246 PMCID: PMC4215540 DOI: 10.1021/jf203913p] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Meadowfoam (Limnanthes alba L.) is a herbaceous winter-spring annual grown as a commercial oilseed crop. The meal remaining after oil extraction from the seed contains up to 4% of the glucosinolate glucolimnanthin. Degradation of glucolimnanthin yields toxic breakdown products, and therefore the meal may have potential in the management of soilborne pathogens. To maximize the pest-suppressive potential of meadowfoam seed meal, it would be beneficial to know the toxicity of individual glucolimnanthin degradation products against specific soilborne pathogens. Meloidogyne hapla second-stage juveniles (J2) and Pythium irregulare and Verticillium dahliae mycelial cultures were exposed to glucolimnanthin as well as its degradation products. Glucolimnanthin and its degradation product, 2-(3-methoxyphenyl)acetamide, were not toxic to any of the soilborne pathogens at concentrations up to 1.0 mg/mL. Two other degradation products, 2-(3-methoxymethyl)ethanethioamide and 3-methoxyphenylacetonitrile, were toxic to M. hapla and P. irregulare but not V. dahliae. The predominant enzyme degradation product, 3-methoxybenzyl isothiocyanate, was the most toxic compound against all of the soilborne pathogens, with M. hapla being the most sensitive with EC(50) values (0.0025 ± 0.0001 to 0.0027 ± 0.0001 mg/mL) 20-40 times lower than estimated EC(50) mortality values generated for P. irregulare and V. dahliae (0.05 and 0.1 mg/mL, respectively). The potential exists to manipulate meadowfoam seed meal to promote the production of specific degradation products. The conversion of glucolimnanthin into its corresponding isothiocyanate should optimize the biopesticidal properties of meadowfoam seed meal against M. hapla, P. irregulare, and V. dahliae.
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Affiliation(s)
- Inga A Zasada
- Horticultural Crops Laboratory, Agricultural Research Service, US Department of Agriculture, 3420 NW Orchard Avenue, Corvallis, Oregon 97330, United States.
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De Nicola GR, Nyegue M, Montaut S, Iori R, Menut C, Tatibouët A, Rollin P, Ndoyé C, Zollo PHA. Profile and quantification of glucosinolates in Pentadiplandra brazzeana Baillon. PHYTOCHEMISTRY 2012; 73:51-56. [PMID: 21993210 DOI: 10.1016/j.phytochem.2011.09.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2011] [Revised: 08/01/2011] [Accepted: 09/12/2011] [Indexed: 05/31/2023]
Abstract
Glucosinolates (GLs) present in root, seed, and leaf extracts of Pentadiplandra brazzeana Baillon were characterized and quantified according to the ISO 9167-1 method based on the HPLC analysis of desulfo-GLs. The analyses were complemented by GC-MS analyses of the isothiocyanates (ITCs) generated from GL degradation by myrosinase. Glucotropaeolin (1a), glucolimnanthin (2a), and glucoaubrietin (3a) were shown to be present in the root extract, whereas the seed mainly contained 3a. 3,4-Dimethoxybenzyl GL (4a), glucobrassicin (5a) and traces of 1a were detected in the leaf extract. The products were fully characterized as their desulfo-counterparts by spectroscopic techniques.
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Affiliation(s)
- Gina R De Nicola
- Agricultural Research Council - Industrial Crop Research Centre, Via di Corticella 133, 40128 Bologna, Italy
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