1
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Eltemur D, Robatscher P, Oberhuber M, Ceccon A. Improved Detection and Quantification of Cyclopropane Fatty Acids via Homonuclear Decoupling Double Irradiation NMR Methods. ACS OMEGA 2023; 8:41835-41843. [PMID: 37970028 PMCID: PMC10634279 DOI: 10.1021/acsomega.3c06538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Accepted: 10/03/2023] [Indexed: 11/17/2023]
Abstract
Over the years, NMR spectroscopy has become a powerful analytical tool for the identification and quantification of a variety of natural compounds in a broad range of food matrices. Furthermore, NMR can be useful for characterizing food matrices in terms of quality and authenticity, also allowing for the identification of counterfeits. Although NMR requires minimal sample preparation, this technique suffers from low intrinsic sensitivity relative to complementary techniques; thus, the detection of adulterants or markers for authenticity at low concentrations remains challenging. Here, we present a strategy to overcome this limitation by the introduction of a simple band-selective homonuclear decoupling sequence that consists of double irradiation on 1H during NMR signal acquisition. The utility of the proposed method is tested on dihydrosterculic acid (DHSA), one of the cyclopropane fatty acids (CPFAs) shown to be a powerful molecular marker for authentication of milk products. A quantitative description of how the proposed NMR scheme allows sensitivity enhancement yet accurate quantification of DHSA is provided.
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Affiliation(s)
- Dilek Eltemur
- Laimburg
Research Centre, Laimburg
6 - Pfatten (Vadena), Auer (Ora), BZ 39040, Italy
- Faculty
of Agricultural, Environmental and Food Sciences, Free University of Bozen-Bolzano, Piazza Università 5, Bozen-Bolzano 39100, Italy
| | - Peter Robatscher
- Laimburg
Research Centre, Laimburg
6 - Pfatten (Vadena), Auer (Ora), BZ 39040, Italy
| | - Michael Oberhuber
- Laimburg
Research Centre, Laimburg
6 - Pfatten (Vadena), Auer (Ora), BZ 39040, Italy
| | - Alberto Ceccon
- Laimburg
Research Centre, Laimburg
6 - Pfatten (Vadena), Auer (Ora), BZ 39040, Italy
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2
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Metabolomics of baobab oil—Analysis and authentication of cyclopropenoid fatty acids using similarity and differential NMR spectroscopy. J Food Compost Anal 2021. [DOI: 10.1016/j.jfca.2021.104000] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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3
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Occurrence of Cis-11,12-Methylene-Hexadecanoic Acid in the Red Alga Solieria pacifica (Yamada) Yoshida. Molecules 2021; 26:molecules26082286. [PMID: 33920883 PMCID: PMC8071341 DOI: 10.3390/molecules26082286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 04/12/2021] [Accepted: 04/13/2021] [Indexed: 11/17/2022] Open
Abstract
Fatty acids in marine algae have attracted the attention of natural chemists because of their biological activity. The fatty acid compositions of the Solieriaceae families (Rhodophyceae, Gaigartinales) provide interesting information that unusual cyclic fatty acids have been occasionally found. A survey was conducted to profile the characteristic fatty acid composition of the red alga Solieria pacifica (Yamada) Yoshida using gas chromatography-mass spectrometry (GC-MS), infrared spectroscopy (IR), and proton nuclear magnetic resonance spectroscopy (1H-NMR). In S. pacifica, two cyclopentyl fatty acids, 11-cyclopentylundecanoic acid (7.0%), and 13-cyclopentyltridecanoic acid (4.9%), and a cyclopropane fatty acid, cis-11,12-methylene-hexadecanoic acid (7.9%) contributed significantly to the overall fatty acid profile. In particular, this cyclopropane fatty acid has been primarily found in bacteria, rumen microorganisms or foods of animal origin, and has not previously been found in any other algae. In addition, this alga contains a significant amount of the monoenoic acid cis-11-hexadecenoic acid (9.0%). Therefore, cis-11,12-methylene-hexadecanoic acid in S. pacifica was likely produced by methylene addition to cis-11-hexadecenoic acid.
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4
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An Overview on Cyclic Fatty Acids as Biomarkers of Quality and Authenticity in the Meat Sector. Foods 2020; 9:foods9121756. [PMID: 33260946 PMCID: PMC7760578 DOI: 10.3390/foods9121756] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 11/24/2020] [Accepted: 11/25/2020] [Indexed: 11/25/2022] Open
Abstract
A survey was conducted to determine the content of cyclopropane fatty acids (CPFAs) and ω-cyclohexyl fatty acids (CHFAs) by using gas chromatography- mass spectrometry (GC-MS) and proton nuclear magnetic resonance (1H NMR) techniques in various meat samples from different species, including commercial samples and complex and thermally processed products (i.e., Bolognese sauce). The CPFAs concentration (as the sum of two isomers, namely dihydrosterculic acid and lactobacillic acid) in bovine meat fat (ranging between 70 and 465 mg/kg fat) was positively related to a silage-based diet, and therefore, they are potential biomarkers for monitoring the feeding system of cattle. CHFAs, such as 11-cyclohexylundecanoic and 13-cyclohexyltridecanoic acids, were only found in lipid profiles from ruminant species, and a linear trend was observed in their content, together with iso-branched fatty acids (iso-BCFAs) deriving from ruminal fermentation, as a function of bovine meat percentage in both raw and cooked minced meat. Thus, CHFAs are potential biomarkers for the assurance of the meat species and, combined with iso-BCFAs, of the beef/pork ratio even in complex meat matrices. The proposed approaches are valuable novel tools for meat authentication, which is pivotal in the management of meat quality, safety, and traceability.
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5
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Ceiba speciosa (A. St.-Hil.) Seeds Oil: Fatty Acids Profiling by GC-MS and NMR and Bioactivity. Molecules 2020; 25:molecules25051037. [PMID: 32106610 PMCID: PMC7179218 DOI: 10.3390/molecules25051037] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 02/13/2020] [Accepted: 02/20/2020] [Indexed: 12/20/2022] Open
Abstract
This study aimed to evaluate the chemical composition by gas chromatography-mass spectrometry (GC-MS) and Nuclear Magnetic Resonance (NMR) analyses, the antioxidant activities evaluated by different in vitro assays namely 2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) (ABTS), Ferric Reducing Ability Power (FRAP), and β-carotene bleaching tests, and the inhibitory effects of enzymes linked to obesity (lipase, α-amylase, and α-glucosidase) of fixed seed oil of Ceiba speciosa (A. St.-Hil.). Fourteen compounds were identified. Linoleic acid (28.22%) was the most abundant followed by palmitic acid (19.56%). Malvalic acid (16.15%), sterculic acid (11.11%), and dihydrosterculic acid (2.74%) were also detected. C. speciosa fixed oil exerted a promising ABTS radicals scavenging activity with an IC50 value of 10.21 µg/mL, whereas an IC50 of 77.44 µg/mL against DPPH+ radicals was found. C. speciosa fixed oil inhibited lipase with an IC50 value of 127.57 µg/mL. The present investigation confirmed the functional properties of C. speciosa fixed oil, and proposes its use as valuable source of bioactive constituents.
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6
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Reinink P, Buter J, Mishra VK, Ishikawa E, Cheng TY, Willemsen PTJ, Porwollik S, Brennan PJ, Heinz E, Mayfield JA, Dougan G, van Els CA, Cerundolo V, Napolitani G, Yamasaki S, Minnaard AJ, McClelland M, Moody DB, Van Rhijn I. Discovery of Salmonella trehalose phospholipids reveals functional convergence with mycobacteria. J Exp Med 2019; 216:757-771. [PMID: 30804000 PMCID: PMC6446866 DOI: 10.1084/jem.20181812] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Revised: 12/08/2018] [Accepted: 02/01/2019] [Indexed: 01/11/2023] Open
Abstract
Salmonella species are among the world's most prevalent pathogens. Because the cell wall interfaces with the host, we designed a lipidomics approach to reveal pathogen-specific cell wall compounds. Among the molecules differentially expressed between Salmonella Paratyphi and S. Typhi, we focused on lipids that are enriched in S. Typhi, because it causes typhoid fever. We discovered a previously unknown family of trehalose phospholipids, 6,6'-diphosphatidyltrehalose (diPT) and 6-phosphatidyltrehalose (PT). Cardiolipin synthase B (ClsB) is essential for PT and diPT but not for cardiolipin biosynthesis. Chemotyping outperformed clsB homology analysis in evaluating synthesis of diPT. DiPT is restricted to a subset of Gram-negative bacteria: large amounts are produced by S. Typhi, lower amounts by other pathogens, and variable amounts by Escherichia coli strains. DiPT activates Mincle, a macrophage activating receptor that also recognizes mycobacterial cord factor (6,6'-trehalose dimycolate). Thus, Gram-negative bacteria show convergent function with mycobacteria. Overall, we discovered a previously unknown immunostimulant that is selectively expressed among medically important bacterial species.
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Affiliation(s)
- Peter Reinink
- Department of Infectious Diseases and Immunology, School of Veterinary Medicine, Utrecht University, Utrecht, Netherlands.,Department of Rheumatology, Immunology, and Allergy, Brigham and Women's Hospital, Boston, MA
| | - Jeffrey Buter
- Department of Rheumatology, Immunology, and Allergy, Brigham and Women's Hospital, Boston, MA
| | - Vivek K Mishra
- Stratingh Institute for Chemistry, University of Groningen, Groningen, Netherlands
| | - Eri Ishikawa
- Department of Molecular Immunology, Immunology Frontier Research Center, Osaka University, Osaka, Japan.,Department of Molecular Immunology, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| | - Tan-Yun Cheng
- Department of Rheumatology, Immunology, and Allergy, Brigham and Women's Hospital, Boston, MA
| | - Peter T J Willemsen
- Wageningen Bioveterinary Research, Department of Infection Biology, Lelystad, Netherlands
| | - Steffen Porwollik
- Department of Microbiology and Molecular Genetics, University of California, Irvine, Irvine, CA
| | - Patrick J Brennan
- Department of Rheumatology, Immunology, and Allergy, Brigham and Women's Hospital, Boston, MA
| | - Eva Heinz
- Wellcome Trust Sanger Institute, Hinxton, UK
| | - Jacob A Mayfield
- Department of Rheumatology, Immunology, and Allergy, Brigham and Women's Hospital, Boston, MA
| | | | - Cécile A van Els
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, Netherlands
| | - Vincenzo Cerundolo
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK
| | - Giorgio Napolitani
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK
| | - Sho Yamasaki
- Department of Molecular Immunology, Immunology Frontier Research Center, Osaka University, Osaka, Japan.,Department of Molecular Immunology, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| | - Adriaan J Minnaard
- Stratingh Institute for Chemistry, University of Groningen, Groningen, Netherlands
| | - Michael McClelland
- Department of Microbiology and Molecular Genetics, University of California, Irvine, Irvine, CA
| | - D Branch Moody
- Department of Rheumatology, Immunology, and Allergy, Brigham and Women's Hospital, Boston, MA
| | - Ildiko Van Rhijn
- Department of Infectious Diseases and Immunology, School of Veterinary Medicine, Utrecht University, Utrecht, Netherlands .,Department of Rheumatology, Immunology, and Allergy, Brigham and Women's Hospital, Boston, MA
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7
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Amiri Moghaddam J, Dávila-Céspedes A, Kehraus S, Crüsemann M, Köse M, Müller CE, König GM. Cyclopropane-Containing Fatty Acids from the Marine Bacterium Labrenzia sp. 011 with Antimicrobial and GPR84 Activity. Mar Drugs 2018; 16:md16100369. [PMID: 30297608 PMCID: PMC6213206 DOI: 10.3390/md16100369] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 10/01/2018] [Accepted: 10/03/2018] [Indexed: 11/23/2022] Open
Abstract
Bacteria of the family Rhodobacteraceae are widespread in marine environments and known to colonize surfaces, such as those of e.g., oysters and shells. The marine bacterium Labrenzia sp. 011 is here investigated and it was found to produce two cyclopropane-containing medium-chain fatty acids (1, 2), which inhibit the growth of a range of bacteria and fungi, most effectively that of a causative agent of Roseovarius oyster disease (ROD), Pseudoroseovarius crassostreae DSM 16950. Additionally, compound 2 acts as a potent partial, β-arrestin-biased agonist at the medium-chain fatty acid-activated orphan G-protein coupled receptor GPR84, which is highly expressed on immune cells. The genome of Labrenzia sp. 011 was sequenced and bioinformatically compared with those of other Labrenzia spp. This analysis revealed several cyclopropane fatty acid synthases (CFAS) conserved in all Labrenzia strains analyzed and a putative gene cluster encoding for two distinct CFASs is proposed as the biosynthetic origin of 1 and 2.
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Affiliation(s)
| | | | - Stefan Kehraus
- Institute for Pharmaceutical Biology, University of Bonn, Nussallee 6, 53115 Bonn, Germany.
| | - Max Crüsemann
- Institute for Pharmaceutical Biology, University of Bonn, Nussallee 6, 53115 Bonn, Germany.
| | - Meryem Köse
- Pharmaceutical Institute, Pharmaceutical Chemistry I, An der Immenburg 4, D-53121 Bonn, Germany.
| | - Christa E Müller
- Pharmaceutical Institute, Pharmaceutical Chemistry I, An der Immenburg 4, D-53121 Bonn, Germany.
| | - Gabriele Maria König
- Institute for Pharmaceutical Biology, University of Bonn, Nussallee 6, 53115 Bonn, Germany.
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8
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Lolli V, Marseglia A, Palla G, Zanardi E, Caligiani A. Determination of Cyclopropane Fatty Acids in Food of Animal Origin by 1H NMR. JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY 2018; 2018:8034042. [PMID: 29805838 PMCID: PMC5902066 DOI: 10.1155/2018/8034042] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Revised: 10/11/2017] [Accepted: 02/12/2018] [Indexed: 06/08/2023]
Abstract
Cyclopropane fatty acids (CPFAs) are unusual fatty acids of microbial origin, recently detected in milk and dairy products. CPFAs have been demonstrated to be interesting molecular markers for authentication of dairy products obtained without ensiled feeds. Moreover, they can also be recognized as a new secondary component of human diet. Information is lacking on the presence of cyclic fatty acids in other food sources. Cyclopropane fatty acids have been detected by GC-MS analysis in cheese and other animal fats in concentration ranging from 200 to 1000 mg/kg fat, but in some cases, the complex fatty acid profile and the possible presence of interfering peaks make the separation not straightforward and the quantification uneasy. Therefore, a new reliable 1H NMR method was developed to detect and measure CPFA content in different foods of animal origin, based on the detection of the characteristic signals of cyclopropane ring. The 1H NMR (600 MHz) method showed detection limits comparable with those of full scan GC-MS, and it allowed the identification and quantitation of the cyclopropane fatty acids in different foods.
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Affiliation(s)
- Veronica Lolli
- Department of Food and Drug, University of Parma, Parco Area delle Scienze 27A, 43124 Parma, Italy
| | - Angela Marseglia
- Department of Food and Drug, University of Parma, Parco Area delle Scienze 27A, 43124 Parma, Italy
| | - Gerardo Palla
- Department of Food and Drug, University of Parma, Parco Area delle Scienze 27A, 43124 Parma, Italy
| | - Emanuela Zanardi
- Department of Food and Drug, University of Parma, Parco Area delle Scienze 27A, 43124 Parma, Italy
| | - Augusta Caligiani
- Department of Food and Drug, University of Parma, Parco Area delle Scienze 27A, 43124 Parma, Italy
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9
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Paton CM, Vaughan RA, Selen Alpergin ES, Assadi-Porter F, Dowd MK. Dihydrosterculic acid from cottonseed oil suppresses desaturase activity and improves liver metabolomic profiles of high-fat-fed mice. Nutr Res 2017; 45:52-62. [PMID: 29037332 DOI: 10.1016/j.nutres.2017.06.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Revised: 05/30/2017] [Accepted: 06/27/2017] [Indexed: 01/15/2023]
Abstract
Polyunsaturated fatty acid (PUFA)-rich diets are thought to provide beneficial effects toward metabolic health in part through their bioactive properties. We hypothesized that increasing PUFA intake in mice would increase peroxisome proliferator activated receptor delta (PPARδ) expression and activity, and we sought to examine the effect of different PUFA-enriched oils on muscle PPARδ expression. One of the oils we tested was cottonseed oil (CSO) which is primarily linoleic acid (53%) and palmitic acid (24%). Mice fed a CSO-enriched diet (50% energy from fat) displayed no change in muscle PPARδ expression; however, in the liver, it was consistently elevated along with its transcriptional coactivator Pgc-1. Male mice were fed chow or CSO-, saturated fat (SFA)-, or linoleic acid (18:2)-enriched diets that were matched for macronutrient content for 4 weeks. There were no differences in food intake, body weight, fasting glucose, glucose tolerance, or energy expenditure between chow- and CSO-fed mice, whereas SFA-fed mice had increased fat mass and 18:2-fed mice were less glucose tolerant. Metabolomic analyses revealed that the livers of CSO-fed mice closely matched those of chow-fed but significantly differed from SFA- and 18:2-enriched groups. Fatty acid composition of the diets and livers revealed an impairment in desaturase activity and the presence of dihydrosterculic acid (DHSA) in the CSO-fed mice. The effect of DHSA on PPARδ and stearoyl-CoA desaturase-1 expression mimicked that of the CSO-fed mice. Taken together, these data suggest that DHSA from CSO may be an effective means to increase PPARδ expression with concomitant suppression of liver stearoyl-CoA desaturase-1 activity.
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Affiliation(s)
- Chad M Paton
- Department of Food Science & Technology, University of Georgia, Athens, GA; Foods & Nutrition, University of Georgia, Athens, GA; Texas Tech University.
| | | | | | | | - Michael K Dowd
- Southern Regional Research Center, ARS, USDA, New Orleans, LA
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10
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Knothe G, Razon LF, Madulid DA, Agoo EMG, de Castro MEG. Fatty Acid Profiles of Garuga floribunda, Ipomoea pes-caprae, Melanolepis multiglandulosa and Premna odorata Seed Oils. J AM OIL CHEM SOC 2017. [DOI: 10.1007/s11746-016-2941-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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11
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Angulo B, Fraile J, Herrerías CI, Mayoral JA. Challenging cyclopropanation reactions on non-activated double bonds of fatty esters. RSC Adv 2017. [DOI: 10.1039/c7ra01017f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Cyclopropanation reactions in the chain of unsaturated fatty esters is a good strategy for the ready preparation of potential monomers for polymerization.
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Affiliation(s)
- B. Angulo
- Departamento de Catálisis y Procesos Catalíticos
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH)
- CSIC-Universidad de Zaragoza
- Facultad de Ciencias
- 50009 Zaragoza
| | - J. M. Fraile
- Departamento de Catálisis y Procesos Catalíticos
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH)
- CSIC-Universidad de Zaragoza
- Facultad de Ciencias
- 50009 Zaragoza
| | - C. I. Herrerías
- Departamento de Catálisis y Procesos Catalíticos
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH)
- CSIC-Universidad de Zaragoza
- Facultad de Ciencias
- 50009 Zaragoza
| | - J. A. Mayoral
- Departamento de Catálisis y Procesos Catalíticos
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH)
- CSIC-Universidad de Zaragoza
- Facultad de Ciencias
- 50009 Zaragoza
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12
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Santalova EA, Denisenko VA. Fatty Acids from a Glass Sponge Aulosaccus sp. Occurrence of New Cyclopropane-Containing and Methyl-Branched Acids. Lipids 2016; 52:73-82. [DOI: 10.1007/s11745-016-4214-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2016] [Accepted: 11/03/2016] [Indexed: 11/29/2022]
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13
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Synthesis of dihydrosterculic acid-based monoglucosyl diacylglycerol and its analogues and their biological evaluation. Eur J Med Chem 2016; 109:134-45. [DOI: 10.1016/j.ejmech.2015.12.048] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2015] [Revised: 12/02/2015] [Accepted: 12/24/2015] [Indexed: 11/13/2022]
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14
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Knothe G, Moser BR. Fatty acid profile of seashore mallow (Kosteletzkya pentacarpos) seed oil and properties of the methyl esters. EUR J LIPID SCI TECH 2015. [DOI: 10.1002/ejlt.201400612] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Gerhard Knothe
- National Center for Agricultural Utilization Research, Agricultural Research Service; U.S. Department of Agriculture; Peoria IL USA
| | - Bryan R. Moser
- National Center for Agricultural Utilization Research, Agricultural Research Service; U.S. Department of Agriculture; Peoria IL USA
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15
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Structural diversity and possible functional roles of free fatty acids of the novel soil isolate Streptomyces sp. NP10. Appl Microbiol Biotechnol 2015; 99:4815-33. [DOI: 10.1007/s00253-014-6364-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Revised: 12/22/2014] [Accepted: 12/24/2014] [Indexed: 02/07/2023]
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16
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Cerebrosides from a Far-Eastern Glass Sponge Aulosaccus sp. Lipids 2014; 50:57-69. [DOI: 10.1007/s11745-014-3974-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Accepted: 11/17/2014] [Indexed: 10/24/2022]
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17
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Palko JW, Buist PH, Manthorpe JM. A flexible and modular stereoselective synthesis of (9R,10S)-dihydrosterculic acid. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.tetasy.2013.01.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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18
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Cyclopropyl and ω-cyclohexyl fatty acids as quality markers of cow milk and cheese. Food Chem 2013; 140:711-6. [PMID: 23692757 DOI: 10.1016/j.foodchem.2013.01.029] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2012] [Revised: 12/20/2012] [Accepted: 01/07/2013] [Indexed: 11/23/2022]
Abstract
Content of cyclopropyl and ω-cyclohexyl fatty acids of microbial origin, respectively, from silage and rumen, was determined by GC-MS and confirmed by (1)H NMR in more than 200 milk samples from dairy cows fed with different forages. Cyclopropyl fatty acids (about 0.1% of milk fat) were detected for the first time in milk and they were present only in milk samples from cows fed with forages containing maize silage, which is not allowed to produce milk for some PDO cheeses as Parmigiano-Reggiano. Their determination can be proposed as a quality parameter of milk or feed and it can be useful especially to distinguish cheeses sold as Parmigiano Reggiano from others cheeses. The content of ω-cyclohexyl tridecanoic acid varied from 0.0% to 0.15% of milk fat, and it was higher in milk samples from cows fed with diets richer in cereal meals.
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19
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Wang ML, Morris B, Tonnis B, Davis J, Pederson GA. Assessment of oil content and fatty acid composition variability in two economically important Hibiscus species. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:6620-6626. [PMID: 22703121 DOI: 10.1021/jf301654y] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The Hibiscus genus encompasses more than 300 species, but kenaf (Hibiscus cannabinus L.) and roselle (Hibiscus sabdariffa L.) are the two most economically important species within the genus. Seeds from these two Hibiscus species contain a relatively high amount of oil with two unusual fatty acids: dihydrosterculic and vernolic acids. The fatty acid composition in the oil can directly affect oil quality and its utilization. However, the variability in oil content and fatty acid composition for these two species is unclear. For these two species, 329 available accessions were acquired from the USDA germplasm collection. Their oil content and fatty acid composition were determined by nuclear magnetic resonance (NMR) and gas chromatography (GC), respectively. Using NMR and GC analyses, we found that Hibiscus seeds on average contained 18% oil and seed oil was composed of six major fatty acids (each >1%) and seven minor fatty acids (each <1%). Hibiscus cannabinus seeds contained significantly higher amounts of oil (18.14%), palmitic (20.75%), oleic (28.91%), vernolic acids (VA, 4.16%), and significantly lower amounts of stearic (3.96%), linoleic (39.49%), and dihydrosterculic acids (DHSA, 1.08%) than H. sabdariffa seeds (17.35%, 18.52%, 25.16%, 3.52%, 4.31%, 44.72%, and 1.57%, respectively). For edible oils, a higher oleic/linoleic (O/L) ratio and lower level of DHSA are preferred, and for industrial oils a high level of VA is preferred. Our results indicate that seeds from H. cannabinus may be of higher quality than H. sabdariffa seeds for these reasons. Significant variability in oil content and major fatty acids was also detected within both species. The variability in oil content and fatty acid composition revealed from this study will be useful for exploring seed utilization and developing new cultivars in these Hibiscus species.
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Affiliation(s)
- Ming Li Wang
- Plant Genetic Resources Conservation Unit, USDA-ARS, Griffin, Georgia 30223, United States.
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Wyche TP, Hou Y, Vazquez-Rivera E, Braun D, Bugni TS. Peptidolipins B-F, antibacterial lipopeptides from an ascidian-derived Nocardia sp. JOURNAL OF NATURAL PRODUCTS 2012; 75:735-40. [PMID: 22482367 PMCID: PMC3349995 DOI: 10.1021/np300016r] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
A marine Nocardia sp. isolated from the ascidian Trididemnum orbiculatum was found to produce five new lipopeptides, peptidolipins B-F (1-5), which show distinct similarities to the previously reported L-Val(6) analog of peptidolipin NA. Synthetic modification of peptidolipin E (4) was used to determine the location of an olefin within the lipid chain. The advanced Marfey's method was used to determine the absolute configurations of the amino acids. Peptidolipins B (1) and E (4) demonstrated moderate antibacterial activity against methicillin-resistant Staphylococcus aureus and methicillin-sensitive Staphylococcus aureus.
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Affiliation(s)
| | | | | | | | - Tim S. Bugni
- To whom correspondence should be addressed: Tel: (608)-263-2519. Fax: (608)-262-5345.
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21
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Manurung R, Daniel L, van de Bovenkamp HH, Buntara T, Maemunah S, Kraai G, Makertihartha IGBN, Broekhuis AA, Heeres HJ. Chemical modifications of
Sterculia foetida
L. oil to branched ester derivatives. EUR J LIPID SCI TECH 2011. [DOI: 10.1002/ejlt.201100149] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Robert Manurung
- School of Life Sciences and Technology, Bandung Institute of Technology, Bandung, Indonesia
| | - Louis Daniel
- Department of Chemical Engineering, University of Groningen, Groningen, The Netherlands
| | | | - Teddy Buntara
- Department of Chemical Engineering, University of Groningen, Groningen, The Netherlands
| | - Siti Maemunah
- Department of Chemical Engineering, University of Groningen, Groningen, The Netherlands
| | - Gerard Kraai
- Department of Chemical Engineering, University of Groningen, Groningen, The Netherlands
| | | | - Antonius A. Broekhuis
- Department of Chemical Engineering, University of Groningen, Groningen, The Netherlands
| | - Hero J. Heeres
- Department of Chemical Engineering, University of Groningen, Groningen, The Netherlands
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22
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Isolation of C₁₁ compounds and a cyclopropane fatty acid from an Okinawan ascidian, Diplosoma sp. Molecules 2011; 16:9972-82. [PMID: 22138856 PMCID: PMC6264306 DOI: 10.3390/molecules16129972] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2011] [Revised: 11/29/2011] [Accepted: 11/30/2011] [Indexed: 11/16/2022] Open
Abstract
Pentylphenols 1 and 2, cyclopropane fatty acid 3, and cyclopentenones 4 and 5, were isolated from an ascidian, Diplosoma sp. The structures of 1−5 were determined by spectroscopic analysis and/or synthesis. Compound 1 inhibited the division of fertilized sea urchin eggs and compound 4 showed mild cytotoxity against HCT116 cells (human colorectal cancer cell).
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23
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Fatty Acids of Chthonomonas calidirosea, of a novel class Chthonomonadetes from a recently described phylum Armatimonadetes. Lipids 2011; 46:1155-61. [PMID: 21805326 DOI: 10.1007/s11745-011-3597-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2011] [Accepted: 07/12/2011] [Indexed: 10/17/2022]
Abstract
A Gram-negative, aerobic, pink-pigmented, rod-shaped bacterium Chthonomonas calidirosea (strain T49(T)) with an optimal temperature for growth of 68 °C, isolated from soil samples from Hell's Gate in the Tikitere geothermal system (New Zealand), was the first cultivated bacterium of the novel phylum Armatimonadetes (formerly candidate division OP10). The lipid composition of C. calidirosea presents a number of unusual features both in the fatty acids and polar lipids. This contribution reports on the fatty acid profile of C. calidirosea. Transmethylation of bacterial biomass yielded fatty acid methyl esters and hydrocarbons, including squalene, partially hydrogenated squalenes, and diploptene. The only type of unsaturation found in C. calidirosea fatty acids was cis-Δ5, as revealed by GCMS of dimethyl disulfide (DMDS) adducts, and the lack of trans-unsaturation absorbance at 960-980 cm(-1) in the IR spectrum of fatty acids methyl esters. An unidentified component X with ECL 16.86 (BP1) and ECL 17.27 (BP20) was also observed, with molecular ion at m/z 282 ("17:1"). X did not form DMDS adducts, nor was affected by mild hydrogenation conditions, indicating the likely presence of a ring rather than unsaturation. The presence of a cyclopropane ring with cis-stereochemistry was confirmed by the (1)H-NMR spectrum. Hydrogenation of X in acetic acid resulted in formation of straight chain 17:0, 5-methyl- and 6-methyl-16:0 fatty acid methyl esters, thus confirming the structure of a novel 5,6-methylene hexadecanoic acid. The major fatty acids of a solid media-grown C. calidirosea were as follows (in weight % of total fatty acids): 16:0 (25.8), i17:0 (19.3), ai17:0 (13.5), 16:1∆5 (8.8), i17:1∆5 (6.8), 5,6-methylene 16:0 (5.2), i16:0 (4.4), 18:0 (3.6), 18:1∆5 (3.2).
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24
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Yoshitomi T, Mizoguchi T, Kunieda M, Tamiaki H. Characterization of Glycolipids in Light-Harvesting Chlorosomes from the Green Photosynthetic BacteriumChlorobium tepidum. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2011. [DOI: 10.1246/bcsj.20100298] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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25
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Tsukamoto S, Fujiwara K, Ikeguchi M. Fatty Acids Bound to Recombinant Tear Lipocalin and Their Role in Structural Stabilization. J Biochem 2009; 146:343-50. [DOI: 10.1093/jb/mvp076] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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26
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Carballeira NM, Montano N, Vicente J, Rodriguez AD. Novel cyclopropane fatty acids from the phospholipids of the Caribbean sponge Pseudospongosorites suberitoides. Lipids 2007; 42:519-24. [PMID: 17520308 PMCID: PMC1941782 DOI: 10.1007/s11745-007-3047-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2006] [Accepted: 12/27/2006] [Indexed: 10/23/2022]
Abstract
The cyclopropane fatty acids 17-methyl-trans-4,5-methyleneoctadecanoic acid, 18-methyl-trans-4,5-methylenenonadecanoic acid, and 17-methyl-trans-4,5-methylenenonadecanoic acid were characterized for the first time in nature in the phospholipids (mainly PE, PG and PS) of the hermit-crab sponge Pseudospongosorites suberitoides. Pyrrolidine derivatization was the key in identifying the position of the cyclopropyl and methyl groups in the acyl chains and (1)H NMR was used to determine the trans stereochemistry of the cyclopropane ring. The phospholipids from the sponge also contained an interesting series of iso-anteiso Delta(5,9) fatty acids with chain-lengths between 17 and 21 carbons, with the fatty acids (5Z,9Z)-18-methyl-5,9-nonadecadienoic acid and the (5Z,9Z)-17-methyl-5,9-nonadecadienoic acid being described for the first time in sponges. The anteiso alpha-methoxylated fatty acid 2-methoxy-12-methyltetradecanoic acid was also identified for the first time in nature in the phospholipids of this interesting marine sponge. The novel cyclopropyl fatty acids could have originated from the phospholipids of a cyanobacterium living in symbiosis with the sponge.
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Affiliation(s)
- Néstor M Carballeira
- Department of Chemistry, University of Puerto Rico, Río Piedras Campus, PO Box 23346, San Juan, 00931-3346 Puerto Rico.
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