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Schaich KM. Epoxides: an underestimated lipid oxidation product. Free Radic Res 2023:1-48. [PMID: 38124354 DOI: 10.1080/10715762.2023.2277142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 08/09/2023] [Indexed: 12/23/2023]
Abstract
Immense gains in understanding of mechanisms and effects of lipid oxidation have been achieved in the nearly 90 years over which lipid oxidation has been an active research focus. Even so, the substantial questions still being raised about lipid oxidation in this special issue show clearly that missing pieces remain and must be considered for full accounting of this important reaction in any system. In this context, epoxides are spotlighted as a critical overlooked product of lipid autoxidation - underestimated in analysis, underestimated in presence as a functionally active and competitive intermediate and product of lipid oxidation, and underestimated in potential contributions to impact of lipid oxidation on other molecules and cell functions. Logical reasons for ignoring or not finding epoxides are offered in historical development of lipid oxidation knowledge. Reactions generating lipid epoxides in autoxidation are reviewed, limitations in detecting and tracking epoxides are outlined to explain why epoxides may not be detected when they should be present, and justifications for increased research and analysis of epoxides are argued. The main goal is to provide a context for recognizing epoxides as critical products that must be accounted for in determining the state rather than extent of lipid oxidation and in tracking its consequences in oils, foods, personal care products, and tissues. A secondary goal is to stimulate new research using contemporary analyses to fill in the gaps of knowledge about epoxide formation, structure, and reactions in lipid autoxidation.
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Affiliation(s)
- Karen M Schaich
- Department of Food Science, Rutgers University, New Brunswick, NJ, USA
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2
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Jutanom M, Kato S, Yamashita S, Toda M, Kinoshita M, Nakagawa K. Analysis of oxidized glucosylceramide and its effects on altering gene expressions of inflammation induced by LPS in intestinal tract cell models. Sci Rep 2023; 13:22537. [PMID: 38110468 PMCID: PMC10728070 DOI: 10.1038/s41598-023-49521-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Accepted: 12/08/2023] [Indexed: 12/20/2023] Open
Abstract
Glucosylceramide (GlcCer) belongs to sphingolipids and is found naturally in plant foods and other sources that humans consume daily. Our previous studies demonstrated that GlcCer prevents inflammatory bowel disease both in vitro and in vivo, whose patients are increasing alarmingly. Although some lipids are vulnerable to oxidation which changes their structure and activities, it is unknown whether oxidative modification of GlcCer affects its activity. In this research, we oxidized GlcCer in the presence of a photosensitizer, analyzed the oxide by mass spectrometric techniques, and examined its anti-inflammatory activity in lipopolysaccharide (LPS)-treated differentiated Caco-2 cells as in vitro model of intestinal inflammation. The results showed that GlcCer is indeed oxidized, producing GlcCer hydroperoxide (GlcCerOOH) as a primary oxidation product. We also found that oxidized GlcCer preserves beneficial functions of GlcCer, suppressing inflammatory-related gene expressions. These findings suggested that GlcCerOOH may perform as an LPS recognition antagonist to discourage inflammation rather than induce inflammation.
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Affiliation(s)
- Mirinthorn Jutanom
- Food Function Analysis Laboratory, Graduate School of Agricultural Science, Tohoku University, 468-1 Aramaki Aza Aoba, Aoba-ku, Sendai, Miyagi, 980-8572, Japan
- Department of Molecular Pathobiology, Faculty of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi Higashi-ku, Fukuoka, 812-8582, Japan
| | - Shunji Kato
- Food Function Analysis Laboratory, Graduate School of Agricultural Science, Tohoku University, 468-1 Aramaki Aza Aoba, Aoba-ku, Sendai, Miyagi, 980-8572, Japan
| | - Shinji Yamashita
- Department of Life and Food Sciences, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, 080-8555, Japan
| | - Masako Toda
- Food and Biomolecular Science Laboratory, Graduate School of Agricultural Science, Tohoku University, Sendai, Miyagi, 980-8572, Japan
| | - Mikio Kinoshita
- Department of Life and Food Sciences, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, 080-8555, Japan
| | - Kiyotaka Nakagawa
- Food Function Analysis Laboratory, Graduate School of Agricultural Science, Tohoku University, 468-1 Aramaki Aza Aoba, Aoba-ku, Sendai, Miyagi, 980-8572, Japan.
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3
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Yu LL, Wang S, Wang J, Yan H, Ni W, Liu HY. Steroidal saponin components and their cancer cell cytotoxicity from Paris rugosa. PHYTOCHEMISTRY 2022; 204:113452. [PMID: 36162461 DOI: 10.1016/j.phytochem.2022.113452] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 09/19/2022] [Accepted: 09/20/2022] [Indexed: 06/16/2023]
Abstract
The chemical components and availability of Paris rugosa were investigated for the first time, using a UPLC-MS/MS-based molecular networking strategy and phytochemical research. Ultimately, eleven undescribed steroidal saponins, parisrugosides A-K, and ten known analogs were identified. Their structures were confirmed using comprehensive spectroscopic data and chemical methods. The aglycones of parisrugosides A-D are first spirostanes with an epoxy group at C-5/C-6, a hydroxy group at C-7, and a double bond at C-8/C-9 or C-8/C-14. Parisrugosides G and H possess an undescribed spirostane aglycone with two double bonds located at C-5/C-6 and C-8/C-9, which are conjugated with a carbonyl group at C-7. The isolates were evaluated for their cytotoxicity against five human cancer cell lines (human HL-60 leukemia, A549 lung, MCF-7 breast, SMMC-7721 liver, and SW480 colon solid cancer cell lines). Parisyunnanoside D, kingianoside K, and dichotomin displayed significant cytotoxicity against these cancer lines, with IC50 values ranging from 0.50 to 19.58 μM.
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Affiliation(s)
- Ling-Ling Yu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Shan Wang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
| | - Jie Wang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
| | - Huan Yan
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
| | - Wei Ni
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
| | - Hai-Yang Liu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China; Yunnan Characteristic Plant Extraction Laboratory, Kunming 650106, China.
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4
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Takahashi H, Kato S, Shimizu N, Otoki Y, Ito J, Sakaino M, Sano T, Imagi J, Nakagawa K. Elucidation of Olive Oil Oxidation Mechanisms by Analysis of Triacylglycerol Hydroperoxide Isomers Using LC-MS/MS. Molecules 2022; 27:molecules27165282. [PMID: 36014520 PMCID: PMC9415923 DOI: 10.3390/molecules27165282] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 08/08/2022] [Accepted: 08/15/2022] [Indexed: 11/21/2022] Open
Abstract
Despite the importance of the insight about the oxidation mechanisms (i.e., radical and singlet oxygen (1O2) oxidation) in extra virgin olive oil (EVOO), the elucidation has been difficult due to its various triacylglycerol molecular species and complex matrix. This study tried to evaluate the mechanisms responsible for EVOO oxidation in our daily use by quantitative determination of triacylglycerol hydroperoxide (TGOOH) isomers using LC-MS/MS. The standards of dioleoyl-(hydroperoxy octadecadienoyl)-triacylglycerol and dioleoyl-(hydroperoxy octadecamonoenoyl)-triacylglycerol, which are the predominant TGOOHs contained in EVOO, were prepared. Subsequently, fresh, thermal-, and photo-oxidized EVOO were analyzed. The obtained results mostly agreed with the previously reported characteristics of the radical and 1O2 oxidation of linoleic acid and oleic acid. This suggests that the methods described in this paper should be valuable in understanding how different factors that determine the quality of EVOO (e.g., olive species, cultivation area, cultivation timing, and extraction methods) contribute to its oxidative stability.
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Affiliation(s)
- Hayato Takahashi
- Laboratory of Food Function Analysis, Graduate School of Agricultural Science, Tohoku University, Sendai 980-8572, Miyagi, Japan
| | - Shunji Kato
- Laboratory of Food Function Analysis, Graduate School of Agricultural Science, Tohoku University, Sendai 980-8572, Miyagi, Japan
- J-Oil Mills Innovation Laboratory, Graduate School of Agricultural Science, Tohoku University, Sendai 980-8572, Miyagi, Japan
| | - Naoki Shimizu
- Laboratory of Food Function Analysis, Graduate School of Agricultural Science, Tohoku University, Sendai 980-8572, Miyagi, Japan
| | - Yurika Otoki
- Laboratory of Food Function Analysis, Graduate School of Agricultural Science, Tohoku University, Sendai 980-8572, Miyagi, Japan
| | - Junya Ito
- Laboratory of Food Function Analysis, Graduate School of Agricultural Science, Tohoku University, Sendai 980-8572, Miyagi, Japan
| | - Masayoshi Sakaino
- Laboratory of Food Function Analysis, Graduate School of Agricultural Science, Tohoku University, Sendai 980-8572, Miyagi, Japan
- Food Design Center, J-OIL MILLS, Inc., Yokohama 230-0053, Kanagawa, Japan
| | - Takashi Sano
- Food Design Center, J-OIL MILLS, Inc., Yokohama 230-0053, Kanagawa, Japan
| | - Jun Imagi
- J-Oil Mills Innovation Laboratory, Graduate School of Agricultural Science, Tohoku University, Sendai 980-8572, Miyagi, Japan
- Food Design Center, J-OIL MILLS, Inc., Yokohama 230-0053, Kanagawa, Japan
| | - Kiyotaka Nakagawa
- Laboratory of Food Function Analysis, Graduate School of Agricultural Science, Tohoku University, Sendai 980-8572, Miyagi, Japan
- J-Oil Mills Innovation Laboratory, Graduate School of Agricultural Science, Tohoku University, Sendai 980-8572, Miyagi, Japan
- Correspondence: ; Fax: +81-22-757-4417
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5
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Liu H, Jin Y, Menon R, Laskowich E, Bareford L, de Vilmorin P, Kolwyck D, Yeung B, Yi L. Characterization of Polysorbate 80 by Liquid Chromatography-Mass Spectrometry to Understand Its Susceptibility to Degradation and Its Oxidative Degradation Pathway. J Pharm Sci 2021; 111:323-334. [PMID: 34416271 DOI: 10.1016/j.xphs.2021.08.017] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 08/15/2021] [Accepted: 08/15/2021] [Indexed: 10/20/2022]
Abstract
A liquid chromatography-mass spectrometry (LC-MS) method was developed to provide a fingerprint of polysorbate 80 (PS80) subspecies that enables identification of PS80 degradation pathway. The developed method demonstrates unique monoester peak profile of PS80 from different vendors, attributed by differences in relative abundance of the fatty acid monoesters. The LC-MS method was also applied to examine the susceptibility of PS80, at different grades, to auto-oxidation and hydrolysis. PS80 oxidative degradation induced by iron or occurred in open bottle without nitrogen overlay was found to follow the same pathway, but at a much faster rate in the former scenario. The oxidation preferentially occurs at the double bond of fatty acid chains, thus providing explanation on the faster degradation observed in PS80 at Chinese Pharmacopia (ChP) grade than at multi-compendial (MC) grade. In contrast, the difference in susceptibility of MC and ChP grade PS80 against esterase-induced hydrolysis in placebo was not pronounced. The method was also able to provide a fingerprint to identify both PS80 hydrolysis and oxidation in mAb drug product stability samples, but it required a solid phase extraction step to remove protein prior to the analysis.
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Affiliation(s)
- Haiyan Liu
- Analytical Development, Biogen Inc., 5000 Davis Drive, RTP, NC 27709, United States
| | - Yutong Jin
- Analytical Development, Biogen Inc., 5000 Davis Drive, RTP, NC 27709, United States
| | - Rashmi Menon
- Analytical Development, Biogen Inc., 5000 Davis Drive, RTP, NC 27709, United States
| | - Erin Laskowich
- Analytical Development, Biogen Inc., 5000 Davis Drive, RTP, NC 27709, United States
| | - Lisa Bareford
- Materials Science, Biogen Inc., 5000 Davis Drive, RTP, NC 27709, United States
| | - Phil de Vilmorin
- Materials Science, Biogen Inc., 5000 Davis Drive, RTP, NC 27709, United States
| | - Dave Kolwyck
- Materials Science, Biogen Inc., 5000 Davis Drive, RTP, NC 27709, United States
| | - Bernice Yeung
- Analytical Development, Biogen Inc., 5000 Davis Drive, RTP, NC 27709, United States
| | - Linda Yi
- Analytical Development, Biogen Inc., 5000 Davis Drive, RTP, NC 27709, United States.
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Petronilho S, Neves B, Melo T, Oliveira S, Alves E, Barros C, Nunes FM, Coimbra MA, Domingues MR. Characterization of Non-volatile Oxidation Products Formed from Triolein in a Model Study at Frying Temperature. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:3466-3478. [PMID: 33721493 DOI: 10.1021/acs.jafc.0c08067] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Frying allows cooking food while promoting their organoleptic properties, imparting crunchiness and flavor. The drawback is the oxidation of triacylglycerides (TAGs), leading to the formation of primary oxidized TAGs. Although they have been associated with chronic and degenerative diseases, they are precursors of pleasant flavors in fried foods. Nevertheless, there is a lack of knowledge about the oxidation species present in foods and their involvement in positive/negative health effects. In this work, high-resolution (HR) C30 reversed-phase (RP)-liquid chromatography (LC)-tandem HR mass spectrometry (MS/MS) was used to identify primary oxidation TAGs resulting from heating triolein (160 °C, 5 min). This allows simulating the initial heating process of frying oils usually used to prepare fried foods, such as chips, crisps, and snacks. Beyond hydroxy, dihydroxy, hydroperoxy, and hydroxy-hydroperoxy derivatives, already reported in phospholipids oxidized by Fenton reaction, new compounds were identified, such as dihydroxy-hydroperoxy-triolein derivatives and positional isomers (9/10- and 9/12-dihydroxy-triolein derivatives). These compounds should be considered when proposing flavor formation pathways and/or mitigating lipid-derived reactive oxygen species occurring during food frying.
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Affiliation(s)
- Sílvia Petronilho
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, Aveiro 3810-193, Portugal
- Chemistry Research Centre-Vila Real, Department of Chemistry, University of Trás-os-Montes and Alto Douro, Quinta de Prados, Vila Real 5001-801, Portugal
| | - Bruna Neves
- Mass Spectrometry Centre, LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, Aveiro 3810-193, Portugal
| | - Tânia Melo
- Mass Spectrometry Centre, LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, Aveiro 3810-193, Portugal
- CESAM, Centre for Environmental and Marine Studies, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, Aveiro 3810-193, Portugal
| | - Sara Oliveira
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, Aveiro 3810-193, Portugal
| | - Eliana Alves
- Mass Spectrometry Centre, LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, Aveiro 3810-193, Portugal
| | - Cristina Barros
- Mass Spectrometry Centre, LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, Aveiro 3810-193, Portugal
| | - Fernando M Nunes
- Chemistry Research Centre-Vila Real, Department of Chemistry, University of Trás-os-Montes and Alto Douro, Quinta de Prados, Vila Real 5001-801, Portugal
| | - Manuel A Coimbra
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, Aveiro 3810-193, Portugal
| | - M Rosário Domingues
- Mass Spectrometry Centre, LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, Aveiro 3810-193, Portugal
- CESAM, Centre for Environmental and Marine Studies, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, Aveiro 3810-193, Portugal
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7
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Grüneis V, Fruehwirth S, Zehl M, Ortner J, Schamann A, König J, Pignitter M. Simultaneous Analysis of Epoxidized and Hydroperoxidized Triacylglycerols in Canola Oil and Margarine by LC-MS. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:10174-10184. [PMID: 31418563 DOI: 10.1021/acs.jafc.9b03601] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The progress of lipid oxidation in foods is evaluated by measuring the peroxides and their scission products. However, hydrogen abstraction-independent pathways are not considered by commonly applied methods despite the known reactivity of epoxides toward biomolecules. Herein, a novel liquid chromatography tandem-mass spectrometry method was developed to detect hydroperoxidized and epoxidized triacylglycerols (TAGs) without derivatization or hydrolyzation of food samples. Epoxidized TAGs could be detected in refined canola oil at concentrations of 96.8 ± 2.08 μM, while only 5.77 ± 0.04 μM hydroperoxidized TAGs could be determined. In contrast to canola oil, margarine was more resistant to lipid oxidation since generation of epoxidized TAGs could only be marginally enhanced from 21.7 ± 0.48 to 28.8 ± 0.64 μM in margarine after treatment at 180 °C for 60 min, as also reflected by a peroxide value of 0.80 ± 0.00 mequiv O2/kg, which remained unchanged. The new method allows the assessment of food safety by the simultaneous measurement of hydroperoxidized and epoxidized TAGs without hydrolysis and laborious sample preparation.
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Pleik S, Spengler B, Ram Bhandari D, Luhn S, Schäfer T, Urbach D, Kirsch D. Ambient-air ozonolysis of triglycerides in aged fingerprint residues. Analyst 2018; 143:1197-1209. [PMID: 29431747 DOI: 10.1039/c7an01506b] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
In forensic science, reconstructing the timing of events occurring during a criminal offense is of great importance. In some cases, the time when particular evidence was left on a crime scene is a critical matter. The ability to estimate the fingerprint age would raise the evidentiary value of fingerprints tremendously. For this purpose the most promising approach is the analysis of changes in the chemical compositions of fingerprint residues in the course of aging. The focus of our study is the identification of human specific compounds in fingerprint residues, characterized by a significant aging behavior that could analytically be used for the age determination of fingerprints in future. The first challenge is the sensitive detection of trace amounts of relevant human specific fingerprint compounds. Highly sensitive LC-MS methods were developed for the reliable structure identification of unsaturated triglycerides and their natural degradation products in order to proof the aging mechanism that takes place in fingerprint residues. Thus our results build the fundamental basis for further forensic method development and potential application in forensic investigation. Ozonolysis was found to be one of the major lipid degradation pathways in fingerprint residues in ambient air. High-resolution tandem mass spectrometry (HRMS2) was carried out to identify the ozonolysis products (TG48:0-monoozonide) formed under exposure to the highly reactive ozone in atmospheric air. The obtained products were confirmed by matrix assisted laser desorption ionization mass spectrometry imaging (MALDI-MSI). Despite several challenges and limitations in the age estimation of fingerprints, the identification of individual degradation products of specific unsaturated lipids in aged fingerprint samples represents a significant analytical progress, resulting in a strong increase in the validity of chemical analysis of fingerprints.
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Affiliation(s)
- Stefanie Pleik
- Forensic Science Institute, Federal Criminal Police Office, 65173 Wiesbaden, Germany.
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Xia W, Budge SM. Techniques for the Analysis of Minor Lipid Oxidation Products Derived from Triacylglycerols: Epoxides, Alcohols, and Ketones. Compr Rev Food Sci Food Saf 2017; 16:735-758. [PMID: 33371569 DOI: 10.1111/1541-4337.12276] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Revised: 05/09/2017] [Accepted: 05/17/2017] [Indexed: 12/18/2022]
Abstract
Lipid oxidation can lead to flavor and safety issues in fat-containing foods. In order to measure the extent of lipid oxidation, hydroperoxides and their scission products are normally targeted for analytical purposes. In recent years, the formation of rarely monitored oxygenated products, including epoxides, alcohols, and ketones, has also raised concerns. These products are thought to form from alternative pathways that compete with chain scissions, and should not be neglected. In this review, a number of instrumental techniques and approaches to determine epoxides, alcohols, and ketones are discussed, with a focus on their selectivity and sensitivity in applications to food lipids and oils. Special attention is given to methods employing gas chromatography (GC), high-performance liquid chromatography (HPLC), and nuclear magnetic resonance (NMR). For characterization purposes, GC-mass spectrometry (GC-MS) provides valuable information regarding the structures of individual oxygenated fatty acids, typically as methyl esters, isolated from oxygenated triacylglycerols (TAGs), while the use of liquid chromatography-MS (LC-MS) techniques allows analysis of intact oxygenated TAGs and offers information about the position of the oxygenated acyl chain on the glycerol backbone. For quantitative purposes, traditional chromatography methods have exhibited excellent sensitivity, while spectroscopic methods, including NMR, are superior to chromatography for their rapid analytical cycles. Future studies should focus on the development of a routine quantitative method that is both selective and sensitive.
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Affiliation(s)
- Wei Xia
- Dept. of Process Engineering and Applied Science, Dalhousie Univ., Halifax, NS, B3H 4R2, Canada
| | - Suzanne M Budge
- Dept. of Process Engineering and Applied Science, Dalhousie Univ., Halifax, NS, B3H 4R2, Canada
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10
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Historical linseed oil/colophony varnishes formulations: Study of their molecular composition with micro-chemical chromatographic techniques. Microchem J 2016. [DOI: 10.1016/j.microc.2015.11.045] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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11
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Application of Matrix-Assisted Laser Desorption Ionization Time-of-Flight Mass Spectrometry for the Analysis of Compounds in Deep-Fat Frying Oil. FOOD ANAL METHOD 2016. [DOI: 10.1007/s12161-016-0413-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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12
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Zeb A, Ullah F. A Simple Spectrophotometric Method for the Determination of Thiobarbituric Acid Reactive Substances in Fried Fast Foods. JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY 2016; 2016:9412767. [PMID: 27123360 PMCID: PMC4830699 DOI: 10.1155/2016/9412767] [Citation(s) in RCA: 133] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Revised: 02/16/2016] [Accepted: 03/17/2016] [Indexed: 05/05/2023]
Abstract
A simple and highly sensitive spectrophotometric method was developed for the determination of thiobarbituric acid reactive substances (TBARS) as a marker for lipid peroxidation in fried fast foods. The method uses the reaction of malondialdehyde (MDA) and TBA in the glacial acetic acid medium. The method was precise, sensitive, and highly reproducible for quantitative determination of TBARS. The precision of extractions and analytical procedure was very high as compared to the reported methods. The method was used to determine the TBARS contents in the fried fast foods such as Shami kebab, samosa, fried bread, and potato chips. Shami kebab, samosa, and potato chips have higher amount of TBARS in glacial acetic acid-water extraction system than their corresponding pure glacial acetic acid and vice versa in fried bread samples. The method can successfully be used for the determination of TBARS in other food matrices, especially in quality control of food industries.
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Affiliation(s)
- Alam Zeb
- Department of Biotechnology, University of Malakand, Chakdara 18800, Pakistan
- *Alam Zeb:
| | - Fareed Ullah
- Department of Biotechnology, University of Malakand, Chakdara 18800, Pakistan
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13
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Zhang Q, Qin W, Li M, Shen Q, Saleh AS. Application of Chromatographic Techniques in the Detection and Identification of Constituents Formed during Food Frying: A Review. Compr Rev Food Sci Food Saf 2015. [DOI: 10.1111/1541-4337.12147] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- Qing Zhang
- College of Food Science; Sichuan Agricultural Univ.; Ya'an 625014 Sichuan China
| | - Wen Qin
- College of Food Science; Sichuan Agricultural Univ.; Ya'an 625014 Sichuan China
| | - Meiliang Li
- College of Food Science; Sichuan Agricultural Univ.; Ya'an 625014 Sichuan China
| | - Qun Shen
- Natl. Engineering and Technology Research Center for Fruits and Vegetables; College of Food Science and Nutritional Engineering, China Agricultural Univ.; Beijing 100083 China
| | - Ahmed S.M. Saleh
- Dept. of Food Science and Technology; Faculty of Agriculture, Assiut Univ.; Assiut 71526 Egypt
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14
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Zeb A. Chemistry and liquid chromatography methods for the analyses of primary oxidation products of triacylglycerols. Free Radic Res 2015; 49:549-64. [PMID: 25824968 DOI: 10.3109/10715762.2015.1022540] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Triacylglycerols (TAGs) are one of the major components of the cells in higher biological systems, which can act as an energy reservoir in the living cells. The unsaturated fatty acid moiety is the key site of oxidation and formation of oxidation compounds. The TAG free radical generates several primary oxidation compounds. These include hydroperoxides, hydroxides, epidioxides, hydroperoxy epidioxides, hydroxyl epidioxides, and epoxides. The presence of these oxidized TAGs in the cell increases the chances of several detrimental processes. For this purpose, several liquid chromatography (LC) methods were reported in their analyses. This review is therefore focused on the chemistry, oxidation, extraction, and the LC methods reported in the analyses of oxidized TAGs. The studies on thin-layer chromatography were mostly focused on the total oxidized TAGs separation and employ hexane as major solvent. High-performance LC (HPLC) methods were discussed in details along with their merits and demerits. It was found that most of the HPLC methods employed isocratic elution with methanol and acetonitrile as major solvents with an ultraviolet detector. The coupling of HPLC with mass spectrometry (MS) highly increases the efficiency of analysis as well as enables reliable structural elucidation. The use of MS was found to be helpful in studying the oxidation chemistry of TAGs and needs to be extended to the complex biological systems.
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Affiliation(s)
- A Zeb
- Department of Biotechnology, University of Malakand , Chakdara , Pakistan
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15
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Borisov OV, Ji JA, John Wang Y. Oxidative Degradation of Polysorbate Surfactants Studied by Liquid Chromatography–Mass Spectrometry. J Pharm Sci 2015; 104:1005-1018. [DOI: 10.1002/jps.24314] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Revised: 11/03/2014] [Accepted: 12/02/2014] [Indexed: 11/11/2022]
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16
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TiO2 photocatalysis of 2-isopropyl-3-methoxy pyrazine taste and odor compound in aqueous phase: Kinetics, degradation pathways and toxicity evaluation. Catal Today 2015. [DOI: 10.1016/j.cattod.2014.03.027] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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17
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Morales A, Marmesat S, Dobarganes MC, Márquez-Ruiz G, Velasco J. Evaporative light scattering detector in normal-phase high-performance liquid chromatography determination of FAME oxidation products. J Chromatogr A 2012; 1254:62-70. [DOI: 10.1016/j.chroma.2012.07.028] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2012] [Revised: 07/09/2012] [Accepted: 07/09/2012] [Indexed: 11/28/2022]
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18
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Uchikata T, Matsubara A, Nishiumi S, Yoshida M, Fukusaki E, Bamba T. Development of oxidized phosphatidylcholine isomer profiling method using supercritical fluid chromatography/tandem mass spectrometry. J Chromatogr A 2012; 1250:205-11. [DOI: 10.1016/j.chroma.2012.05.083] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2012] [Revised: 05/22/2012] [Accepted: 05/22/2012] [Indexed: 10/28/2022]
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19
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Byrdwell WC. “Dilute-and-shoot” triple parallel mass spectrometry method for analysis of vitamin D and triacylglycerols in dietary supplements. Anal Bioanal Chem 2011; 401:3317-34. [DOI: 10.1007/s00216-011-5406-4] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2011] [Revised: 08/30/2011] [Accepted: 09/08/2011] [Indexed: 10/17/2022]
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20
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Suomela JP, Leskinen H, Kallio H. Analysis of isomeric forms of oxidized triacylglycerols using ultra-high-performance liquid chromatography and tandem mass spectrometry. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2011; 59:8095-8100. [PMID: 21702477 DOI: 10.1021/jf2011936] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Detailed studies on the regioisomeric structures of oxidized species of triacylglycerols (TAG), formed in food during storage and processing, have not been published thus far. In this study, an analytical approach based on efficient ultra-high-performance liquid chromatographic (UHPLC) separation of different isomers of oxidized TAG species and their tandem mass spectrometric analysis was created. A linear solvent gradient based on acetonitrile and acetone was used in the UHPLC method. A novel method utilizing positive ion ESI using ammonia supplemented in the nebulizer gas was used to produce ammonium adduct ions for mass spectrometric analysis. With the UHPLC method used, different regioisomers of TAG species containing oxidized linoleic or oleic acid could be efficiently resolved. Differences in the fragmentation patterns of many of the oxidized TAG isomers could be demonstrated by the tandem mass spectrometric method. On the basis of the results, the approach enables regiospecific analysis of oxidized TAG molecules.
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Affiliation(s)
- Jukka-Pekka Suomela
- Department of Biochemistry and Food Chemistry, University of Turku, Turku, Finland.
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21
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Sun YE, Wang WD, Chen HW, Li C. Autoxidation of unsaturated lipids in food emulsion. Crit Rev Food Sci Nutr 2011; 51:453-66. [PMID: 21491270 DOI: 10.1080/10408391003672086] [Citation(s) in RCA: 97] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Unsaturated lipids having various physiological roles are of significance in biochemistry, nutrition, medicine, and food. However, the susceptibility of lipids to oxidation is a major cause of quality deterioration in food emulsions. The reaction mechanism and factors that influence oxidation are appreciably different for emulsified lipids and bulk lipids. This article gives a brief overview of the current knowledge on autoxidation of oil-in-water food emulsions, especially those that contain unsaturated lipids, which are important in the food industry. Autoxidation of unsaturated lipids in oil-in-water emulsion is discussed, and so also their oxidation mechanism, the major factors influencing oxidation, determination measures, research status, and the problems encountered in recent years. Some effective strategies for controlling lipid oxidation in food emulsion have been presented in this review.
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Affiliation(s)
- Yue-E Sun
- College of Food Engineering, Xuzhou Institute of Technology, Jiangsu, Province, People's Republic of China
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22
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Liquid Chromatography–Light Scattering Detector–Mass Spectrometric Analysis of Digested Oxidized Rapeseed Oil. Lipids 2010; 45:1061-79. [DOI: 10.1007/s11745-010-3474-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2009] [Accepted: 09/02/2010] [Indexed: 10/19/2022]
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23
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Le Grandois J, Marchioni E, Zhao M, Giuffrida F, Ennahar S, Bindler F. Oxidative stability at high temperatures of oleyol and linoleoyl residues in the forms of phosphatidylcholines and triacylglycerols. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2010; 58:2973-2979. [PMID: 20141141 DOI: 10.1021/jf903253f] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
An investigation was carried out into the stability of fatty acyl groups to heat-induced oxidative changes as affected by their chemical environment. The behavior of oleic and linoleic acyl groups when esterified in triacylglycerols (TAGs) and phosphatidylcholines (PCs) was evaluated. The monitoring of the oxidative degradation using liquid chromatography-mass spectrometry (LC-MS) showed that fatty acyl groups are less likely to be oxidized when in the form of PCs than when in the form of TAGs. In addition, oxidation products from PCs were more stable than those from TAGs. This finding strengthens the idea that the choline group in PCs increases the stability of fatty acyl groups to oxidation in comparison to TAGs.
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Affiliation(s)
- Julie Le Grandois
- Laboratoire de Chimie Analytique et Sciences de l'Aliment, IPHC-DSA, Universite de Strasbourg, CNRS, 74, route du Rhin, 67400 Illkirch, France
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24
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Reis A, Domingues P, Ferrer-Correia AJV, Domingues MRM. Identification of free radicals of glycerophosphatidylcholines containing ω-6 fatty acids using spin trapping coupled with tandem mass spectrometry. Free Radic Res 2009; 41:432-43. [PMID: 17454125 DOI: 10.1080/10715760601118353] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Metal-catalysed radical oxidation of diacyl-glycerophosphatidylcholines (GPC) with omega-6 acyl polyunsaturated fatty acids (PAPC, palmitoyl-arachidonoyl-glycerophosphatidylcholine and PLPC, palmitoyl-lineloyl-glycerophosphatidylcholine) was studied. Free radical oxidation products were trapped by spin trapping with 5,5-dimethyl-1-pyrrolidine-N-oxide (DMPO) and identified by electrospray mass spectrometry (ES-MS). The spin adducts of oxidised GPC containing one and two oxygen atoms and one and two DMPO molecules were observed as doubly charged ions. Structural characterisation by tandem mass spectrometry (MS/MS) of these ions revealed product ions corresponding to loss of the acyl chains (sn-1-palmitoyl and sn-2-oxidised spin adduct of lineloyl or arachidonoyl), loss of the spin trap (DMPO) and product ions attributed to oxidised sn-2 fatty acid spin adduct (lineloyl and arachidonoyl). Product ions formed by homolytic cleavages near the spin trap and also from 1,4 hydrogen elimination cleavages involving the hydroxy group in the sn-2 fatty acid spin adduct allowed to infer the nature of the radical. Altogether, the presence of GPC hydroxy-alkyl/DMPO and hydroxy-alkoxyl/DMPO spin adducts was proposed.
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Affiliation(s)
- A Reis
- Department of Chemistry, University of Aveiro, Aveiro 3810-193, Portugal
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25
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Ikeda K, Oike Y, Shimizu T, Taguchi R. Global analysis of triacylglycerols including oxidized molecular species by reverse-phase high resolution LC/ESI-QTOF MS/MS. J Chromatogr B Analyt Technol Biomed Life Sci 2009; 877:2639-47. [PMID: 19481987 DOI: 10.1016/j.jchromb.2009.03.047] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2008] [Revised: 03/26/2009] [Accepted: 03/31/2009] [Indexed: 12/21/2022]
Abstract
Recently, global analysis of triacylglycerols (TAGs) has become increasingly important in studies of abnormality of lipid metabolism in metabolic syndrome. TAGs consist of various molecular species, caused by their three fatty acyl chains with a large variety of carbon chain lengths and degrees of unsaturation. Therefore, most previously reported methods have been insufficient in global detection of TAGs including their structural isomers and TAGs with oxidized or odd number acyl carbon chain. Here we report an effective method for global analysis of TAG molecular species from complex lipid mixtures of mouse liver and white adipose tissue (WAT) using reverse-phased high resolution liquid chromatography (LC) coupled with electrospray ionization (ESI)-quadrapole/time of flight hybrid mass spectrometer (QTOF-MS). For effective profiling of TAG molecular species, sensitive two-dimensional (2D) maps were constructed and individual structures were correctly identified by the elution profile and MS/MS. As a result, TAGs including their structural isomers and TAGs with an odd number acyl carbon chain were separated and detected effectively on the 2D map as compared with conventional high performance LC. It was also found that our 2D profiling method was useful in searching characteristic molecular species globally. In mouse WAT, novel oxidized TAGs, which were mainly formed by hydroperoxidation of one of their linoleic acyl chains, were effectively detected in comparison with TAG molecular species of mouse liver.
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Affiliation(s)
- Kazutaka Ikeda
- Department of Metabolome, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
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26
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Reis A, Domingues MRM, Amado FML, Ferrer-Correia AJ, Domingues P. Radical peroxidation of palmitoyl-lineloyl-glycerophosphocholine liposomes: Identification of long-chain oxidised products by liquid chromatography–tandem mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2007; 855:186-99. [PMID: 17540625 DOI: 10.1016/j.jchromb.2007.05.006] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2006] [Revised: 04/18/2007] [Accepted: 05/01/2007] [Indexed: 11/23/2022]
Abstract
Liquid chromatography coupled with electrospray tandem mass spectrometry (LC-MS/MS) was used to identify palmitoyl-lineloyl-glycerophosphatidylcholine oxidation products (PL(O(1-6))PC). Structural and positional isomers of keto, hydroxy and/or epoxy, and hydroperoxide derivatives of PLPC were identified based on MS/MS data, namely product ions attributed to lyso-phosphatidylcholines, product ions formed by loss of nH(2)O and H(2)O(2) from [MH](+) ions groups, and product ions involving the hydroxy groups, providing information about the position of these groups and of the double bonds along the carbon chain of lineloyl moiety.
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Affiliation(s)
- Ana Reis
- Department of Chemistry, University of Aveiro, Aveiro, Portugal
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27
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Calvano CD, Aresta A, Palmisano F, Zambonin CG. A laser desorption ionization time-of-flight mass spectrometry investigation into triacylglycerols oxidation during thermal stressing of edible oils. Anal Bioanal Chem 2007; 389:2075-84. [PMID: 17541564 DOI: 10.1007/s00216-007-1347-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2007] [Revised: 04/30/2007] [Accepted: 05/07/2007] [Indexed: 10/23/2022]
Abstract
Laser desorption ionization time-of-flight mass spectrometry (LDI-TOF MS) was used to characterize olive and sunflower oils before and after thermally assisted oxidation in order to develop a rapid fingerprinting method for oil that contains unchanged and oxidized components. No matrix was used to assist laser desorption, and simplified mass spectra were obtained in the mass range of interest (m/z 500-1000), where triacyl- and diacylglycerol ions were observed. Sample preparation was reduced to dissolving oil in chloroform saturated with NaCl. Sodiated triacylglycerols (TAGs), their epoxy/hydroxy and hydroperoxy derivatives, as well as TAGs with shortened chain fatty acids (beta-scission products) were clearly observed in the spectra. LDI-TOF MS rapidly provides semiquantitative information about the oxidation level of edible oil, and thus represents a very useful quality control tool.
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Affiliation(s)
- Cosima Damiana Calvano
- Dipartimento di Chimica, Centro Interdipartimentale di Ricerca Spettrometria di Massa Analitica per Ricerche Tecnologiche, Università degli Studi di Bari, Via Orabona 4, 70126, Bari, Italy
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28
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Giuffrida F, Destaillats F, Robert F, Skibsted LH, Dionisi F. Formation and hydrolysis of triacylglycerol and sterols epoxides: role of unsaturated triacylglycerol peroxyl radicals. Free Radic Biol Med 2004; 37:104-14. [PMID: 15183198 DOI: 10.1016/j.freeradbiomed.2004.04.004] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2003] [Revised: 03/19/2004] [Accepted: 04/02/2004] [Indexed: 10/26/2022]
Abstract
Epoxidation of unsaturated pure triacylglycerols (TAGs), cholesterol, and phytosterols was investigated using air and 18O2 oxidation experiments. Oxidized lipids were analyzed using both triple quadrupole mass spectrometry (MS), ion-trap MS in the direct infusion mode, and triple quadrupole MS in tandem with a liquid chromatograph (LC-MS/MS). Pure 1,2-distearoyl-3-oleoyl-glycerol (SSO) samples were heated in sealed vials under air or 18O2 atmosphere at 160 degrees C for 1 h. LC-MS/MS analysis of 18O-labeled oxidized TAGs revealed that hydroperoxides and epoxide TAGs are formed mainly during this first step. Then, oxidized TAGs were incubated under an inert atmosphere, separately with 1,2-dipalmitoyl-3-oleoyl-glycerol (PPO) at 160 degrees C for 90 min, and with cholesterol and stigmasterol at 100 degrees C for 10 min. Subsequent LC-MS/MS analysis revealed the occurrence of epoxidation products of PPO, cholesterol, and sitosterol. Therefore, we showed the epoxidation of unsaturated lipids proceeds readily in contact with hydroperoxide TAGs, in the absence of molecular oxygen. Dual oxidation experiments using both air and 18O2 allowed investigation of oxygen atom transfer during epoxidation of lipids. Moreover, the experimental oxidation design presented can be used to study fragmentation pathways, as illustrated for 5,6-epoxycholesterol (CE) on both triple quadrupole and ion-trap MS. We report for the first time the occurrence of 5,6;22,23-diepoxystigmasterol (StDE) and 5,6;22,23-diepoxybrassicasterol (BDE) in autoxidized vegetable oils. Additionally, acid-catalyzed hydrolysis of epoxidized lipids, with emphasis on phytosterol polyol formation, was investigated using a model gastric medium. For confirmation, almost all identified products were synthesized and characterized by MS.
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