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Barros MP, Zacarías-Garcia J, Rey F, Zacarías L, Rodrigo MJ. Antioxidant Interactions between Citrus Fruit Carotenoids and Ascorbic Acid in New Models of Animal Cell Membranes. Antioxidants (Basel) 2023; 12:1733. [PMID: 37760036 PMCID: PMC10525925 DOI: 10.3390/antiox12091733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 08/23/2023] [Accepted: 08/25/2023] [Indexed: 09/29/2023] Open
Abstract
The regular consumption of citrus fruits by humans has been associated with lower incidence of chronic-degenerative diseases, especially those mediated by free radicals. Most of the health-promoting properties of citrus fruits derive from their antioxidant content of carotenoids and ascorbic acid (ASC). In the current work we have investigated the scavenging (against hydroxyl radical) and quenching capacities (against singlet oxygen) of four different carotenoid extracts of citrus fruits in the presence or absence of ASC (μM range) in organic solvent, aqueous solution, micelles and in an innovative biomimicking liposomal system of animal cell membrane (AML). The fruits of four varieties of citrus were selected for their distinctive carotenoid composition (liquid chromatography characterization): 'Nadorcott' mandarin and the sweet oranges 'Valencia late', 'Ruby Valencia' and 'Pinalate' mutant. The quenching activity of citrus carotenoids strongly depended on the biological assemblage: freely diffusible in organic solvent, 'Ruby Valencia' carotenoids (containing lycopene) showed the highest quenching activity, whereas 'Nadorcott' mandarin extracts, rich in β-cryptoxanthin, prevailed in micellar systems. Interestingly, the addition of 10 μM ASC significantly increased the quenching activity of all citrus extracts in micelles: 'Valencia' orange (+53%), 'Pinalate' (+87%), 'Ruby' (4-fold higher) and 'Nadorcott' mandarins (+20%). Accurate C11-BODIPY581/591 fluorescence assays showed solid scavenging activities of all citrus extracts against AML oxidation: 'Valencia' (-61%), 'Pinalate' (-58%) and 'Ruby' oranges (-29%), and 'Nadorcott' mandarins (-70%). Indeed, all four citrus extracts tested here have balanced antioxidant properties; extracts from the 'Nadorcott' mandarin slightly prevailed overall, due, at least in part, to its high content of β-cryptoxanthin. This study depicts some of the antioxidant interactions between citrus fruit carotenoids and ascorbic acid in models of animal cell membranes and reinforces the contribution of them in promoting health benefits for humans.
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Affiliation(s)
- Marcelo P. Barros
- Food Biotechnology Department, Institute of Agrochemistry and Food Technology, Spanish National Research Council (IATA-CSIC), Catedrático Agustín Escardino 7, Paterna, 46980 Valencia, Spain; (J.Z.-G.); (F.R.); (L.Z.)
- Interdisciplinary Program in Health Sciences, Institute of Physical Activity Sciences and Sports (ICAFE), Cruzeiro do Sul University, Rua Galvao Bueno 868, São Paulo 01506-000, Brazil
| | - Jaime Zacarías-Garcia
- Food Biotechnology Department, Institute of Agrochemistry and Food Technology, Spanish National Research Council (IATA-CSIC), Catedrático Agustín Escardino 7, Paterna, 46980 Valencia, Spain; (J.Z.-G.); (F.R.); (L.Z.)
| | - Florencia Rey
- Food Biotechnology Department, Institute of Agrochemistry and Food Technology, Spanish National Research Council (IATA-CSIC), Catedrático Agustín Escardino 7, Paterna, 46980 Valencia, Spain; (J.Z.-G.); (F.R.); (L.Z.)
| | - Lorenzo Zacarías
- Food Biotechnology Department, Institute of Agrochemistry and Food Technology, Spanish National Research Council (IATA-CSIC), Catedrático Agustín Escardino 7, Paterna, 46980 Valencia, Spain; (J.Z.-G.); (F.R.); (L.Z.)
| | - María J. Rodrigo
- Food Biotechnology Department, Institute of Agrochemistry and Food Technology, Spanish National Research Council (IATA-CSIC), Catedrático Agustín Escardino 7, Paterna, 46980 Valencia, Spain; (J.Z.-G.); (F.R.); (L.Z.)
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Gamage RS, Smith BD. Spontaneous Transfer of Indocyanine Green from Liposomes to Albumin Is Inhibited by the Antioxidant α-Tocopherol. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:11950-11961. [PMID: 36126324 PMCID: PMC9897306 DOI: 10.1021/acs.langmuir.2c01715] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Indocyanine Green (ICG) is a clinically approved organic dye with near-infrared absorption and fluorescence. Over the years, many efforts to improve the photophysical and pharmacokinetic properties of ICG have investigated numerous nanoparticle formulations, especially liposomes with membrane-embedded ICG. A series of systematic absorption and fluorescence experiments, including FRET experiments using ICG as a fluorescence energy acceptor, found that ICG transfers spontaneously from liposomes to albumin protein residing in the external solution with a half-life of ∼10 min at 37 °C. Moreover, transfer of ICG from liposome membranes to external albumin reduces light-activated leakage from thermosensitive liposomes with membrane-embedded ICG. A survey of lipophilic liposome additives discovered that the presence of clinically approved antioxidant, α-tocopherol, greatly increases ICG retention in the liposomes (presumably by forming favorable aromatic stacking interactions), inhibits ICG photobleaching and prevents albumin-induced reduction of light-triggered liposome leakage. This new insight will help researchers with the specific task of optimizing ICG-containing liposomes for fluorescence imaging or phototherapeutics. More broadly, the results suggest a broader design concept concerning light triggered liposome leakage, that is, proximity of the light absorbing dye to the bilayer membrane is a critical design feature that impacts the extent of liposome leakage.
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Yang Z, Hu Y, Yue P, Luo H, Li Q, Li H, Zhang Z, Peng F. Physicochemical Properties and Skin Protection Activities of Polysaccharides from Usnea longissima by Graded Ethanol Precipitation. ACS OMEGA 2021; 6:25010-25018. [PMID: 34604681 PMCID: PMC8482769 DOI: 10.1021/acsomega.1c04163] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Accepted: 09/08/2021] [Indexed: 06/13/2023]
Abstract
Four Usnea longissima polysaccharides (ULPs; ULP15, ULP30, ULP50, and ULP70) were obtained from the lichen U. longissima via water extraction and graded ethanol precipitation. The obtained ULPs were all heteropolysaccharides with a few proteins, with which glucose was the major monosaccharide composition. With the increase in the precipitated ethanol concentrations, the content of galactose, xylose, and mannose increased, whereas that of glucose decreased. Moreover, the antioxidant activity test demonstrated that ULP15 exhibited better reducing power and stronger scavenging ability on 2,2-diphenyl-1-picrylhydrazyl (DPPH) and hydroxyl free radicals. Importantly, ULP15 also had a better proliferative effect on human HaCaT keratinocytes and dermal fibroblasts. Meanwhile, ULP15 protected HaCaT keratinocytes from UVB-induced proliferation inhibition and exhibited tyrosinase inhibition activity. Therefore, this work provides interesting insight into the preparation of cosmetic ingredients using the polysaccharide ULP15.
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Affiliation(s)
- Ziying Yang
- Beijing
Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China
| | - Yajie Hu
- Beijing
Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China
| | - Panpan Yue
- Beijing
Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China
| | - Hongdan Luo
- Department
of Dermatology, Zunyi Hospital of Traditional
Chinese Medicine, Zunyi, Guizhou 563000, China
| | - Qisui Li
- Meteorological
Bureau of Meishan City, Meishan, Sichuan 620010, China
| | - Huiling Li
- JALA
Research Center, JALA Group Co. Ltd., Shanghai 200233, China
| | - Zhang Zhang
- JALA
Research Center, JALA Group Co. Ltd., Shanghai 200233, China
| | - Feng Peng
- Beijing
Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China
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Nagaoka SI, Bandoh Y, Matsuhiroya S, Inoue K, Nagashima U, Ohara K. Activity correlation among singlet-oxygen quenching, free-radical scavenging and excited-state proton-transfer in hydroxyflavones: Substituent and solvent effects. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2020.113122] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Structures of Astaxanthin and Their Consequences for Therapeutic Application. INTERNATIONAL JOURNAL OF FOOD SCIENCE 2020; 2020:2156582. [PMID: 32775406 PMCID: PMC7391096 DOI: 10.1155/2020/2156582] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 06/24/2020] [Accepted: 06/29/2020] [Indexed: 12/20/2022]
Abstract
Reactive oxygen species (ROS) are continuously generated as a by-product of normal aerobic metabolism. Elevated ROS formation leads to potential damage of biological structures and is implicated in various diseases. Astaxanthin, a xanthophyll carotenoid, is a secondary metabolite responsible for the red-orange color of a number of marine animals and microorganisms. There is mounting evidence that astaxanthin has powerful antioxidant, anti-inflammatory, and antiapoptotic activities. Hence, its consumption can result in various health benefits, with potential for therapeutic application. Astaxanthin contains both a hydroxyl and a keto group, and this unique structure plays important roles in neutralizing ROS. The molecule quenches harmful singlet oxygen, scavenges peroxyl and hydroxyl radicals and converts them into more stable compounds, prevents the formation of free radicals, and inhibits the autoxidation chain reaction. It also acts as a metal chelator and converts metal prooxidants into harmless molecules. However, like many other carotenoids, astaxanthin is affected by the environmental conditions, e.g., pH, heat, or exposure to light. It is hence susceptible to structural modification, i.e., via isomerization, aggregation, or esterification, which alters its physiochemical properties. Here, we provide a concise overview of the distribution of astaxanthin in tissues, and astaxanthin structures, and their role in tackling singlet oxygen and free radicals. We highlight the effect of structural modification of astaxanthin molecules on the bioavailability and biological activity. These studies suggested that astaxanthin would be a promising dietary supplement for health applications.
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Murotomi K, Umeno A, Sugino S, Yoshida Y. Quantitative kinetics of intracellular singlet oxygen generation using a fluorescence probe. Sci Rep 2020; 10:10616. [PMID: 32606330 PMCID: PMC7327044 DOI: 10.1038/s41598-020-67155-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Accepted: 05/29/2020] [Indexed: 11/24/2022] Open
Abstract
Singlet oxygen (1O2) is a type of reactive oxygen species involved in numerous physiological activities. We previously reported that 1O2-specific oxidation products are increased in patients with prediabetes, suggesting that measurement of 1O2 may be an important indicator of physiological and pathological conditions. The turnover in the generation and quenching of 1O2 is extremely rapid during biological activities owing to it high reactivity and short lifetime in solution. However, the dynamic changes in 1O2 generation in living cells have not been fully explored. In this study, we investigated whether the kinetics of 1O2 generation can be quantified using a far-red fluorescent probe for mitochondrial 1O2, Si-DMA, following addition of the 1O2 generator, endoperoxide, to mammalian cells. The kinetics of Si-DMA fluorescence intensity dose-dependently increased following treatment of mammalian living cells with endoperoxide. Alternatively, treatment with 1O2 quenchers decreased the fluorescence intensities following endoperoxide treatment. Our results indicate that the kinetics of intracellular 1O2 can be readily obtained using Si-DMA and time-lapse imaging, which provides new insights into the mechanism of 1O2 generation in mammalian cells and the exploration of 1O2 generators and quenchers.
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Affiliation(s)
- Kazutoshi Murotomi
- Molecular Neurophysiology Research Group, Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8566, Japan.
| | - Aya Umeno
- Health Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 2217-14 Hayashi-cho, Takamatsu, Kagawa, 761-0301, Japan
| | - Sakiko Sugino
- Health Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 2217-14 Hayashi-cho, Takamatsu, Kagawa, 761-0301, Japan
| | - Yasukazu Yoshida
- LG Japan Lab Inc., Glass Cube Shinagawa 2F, 4-13-14, Higashi Shinagawa, Shinagawa-ku, Tokyo, 140-0002, Japan
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Parra-Rivero O, Paes de Barros M, Prado MDM, Gil JV, Hornero-Méndez D, Zacarías L, Rodrigo MJ, Limón MC, Avalos J. Neurosporaxanthin Overproduction by Fusarium fujikuroi and Evaluation of Its Antioxidant Properties. Antioxidants (Basel) 2020; 9:E528. [PMID: 32560158 PMCID: PMC7346100 DOI: 10.3390/antiox9060528] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 06/11/2020] [Accepted: 06/12/2020] [Indexed: 11/16/2022] Open
Abstract
Neurosporaxanthin (NX) is a carboxylic carotenoid produced by some filamentous fungi, including species of the genera Neurospora and Fusarium. NX biosynthetic genes and their regulation have been thoroughly investigated in Fusarium fujikuroi, an industrial fungus used for gibberellin production. In this species, carotenoid-overproducing mutants, affected in the regulatory gene carS, exhibit an upregulated expression of the NX pathway. Based on former data on a stimulatory effect of nitrogen starvation on carotenoid biosynthesis, we developed culture conditions with carS mutants allowing the production of deep-pigmented mycelia. With this method, we obtained samples with ca. 8 mg NX/g dry mass, in turn the highest concentration for this carotenoid described so far. NX-rich extracts obtained from these samples were used in parallel with carS-complemented NX-poor extracts obtained under the same conditions, to check the antioxidant properties of this carotenoid in in vitro assays. NX-rich extracts exhibited higher antioxidant capacity than NX-poor extracts, either when considering their quenching activity against [O2(1g)] in organic solvent (singlet oxygen absorption capacity (SOAC) assays) or their scavenging activity against different free radicals in aqueous solution and in liposomes. These results make NX a promising carotenoid as a possible feed or food additive, and encourage further studies on its chemical properties.
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Affiliation(s)
- Obdulia Parra-Rivero
- Department of Genetics, Faculty of Biology, University of Seville, 41012 Seville, Spain; (O.P.-R.); (M.d.M.P.); (M.C.L.)
| | - Marcelo Paes de Barros
- Department of Food Biotechnology, Institute of Agrochemistry and Food Technology (IATA-CSIC), 46980 Valencia, Spain; (M.P.d.B.); (J.-V.G.); (L.Z.); (M.J.R.)
- Interdisciplinary Program in Health Sciences, Institute of Physical Activity Sciences and Sports (ICAFE), Cruzeiro do Sul University, Rua Galvão Bueno 868, São Paulo SP 01506-000, Brazil
| | - María del Mar Prado
- Department of Genetics, Faculty of Biology, University of Seville, 41012 Seville, Spain; (O.P.-R.); (M.d.M.P.); (M.C.L.)
| | - José-Vicente Gil
- Department of Food Biotechnology, Institute of Agrochemistry and Food Technology (IATA-CSIC), 46980 Valencia, Spain; (M.P.d.B.); (J.-V.G.); (L.Z.); (M.J.R.)
- Food Technology Area, Faculty of Pharmacy, University of Valencia, Burjassot, 46100 Valencia, Spain
| | - Dámaso Hornero-Méndez
- Department of Food Phytochemistry, Instituto de la Grasa (IG-CSIC), 41013 Seville, Spain;
| | - Lorenzo Zacarías
- Department of Food Biotechnology, Institute of Agrochemistry and Food Technology (IATA-CSIC), 46980 Valencia, Spain; (M.P.d.B.); (J.-V.G.); (L.Z.); (M.J.R.)
| | - María J. Rodrigo
- Department of Food Biotechnology, Institute of Agrochemistry and Food Technology (IATA-CSIC), 46980 Valencia, Spain; (M.P.d.B.); (J.-V.G.); (L.Z.); (M.J.R.)
| | - M. Carmen Limón
- Department of Genetics, Faculty of Biology, University of Seville, 41012 Seville, Spain; (O.P.-R.); (M.d.M.P.); (M.C.L.)
| | - Javier Avalos
- Department of Genetics, Faculty of Biology, University of Seville, 41012 Seville, Spain; (O.P.-R.); (M.d.M.P.); (M.C.L.)
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Black HS, Boehm F, Edge R, Truscott TG. The Benefits and Risks of Certain Dietary Carotenoids that Exhibit both Anti- and Pro-Oxidative Mechanisms-A Comprehensive Review. Antioxidants (Basel) 2020; 9:E264. [PMID: 32210038 PMCID: PMC7139534 DOI: 10.3390/antiox9030264] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 03/13/2020] [Accepted: 03/16/2020] [Indexed: 01/04/2023] Open
Abstract
Carotenoid pigments, particularly β-carotene and lycopene, are consumed in human foodstuffs and play a vital role in maintaining health. β-carotene is known to quench singlet oxygen and can have strong antioxidant activity. As such, it was proposed that β-carotene might reduce the risk of cancer. Epidemiological studies found inverse relationships between cancer risk and β-carotene intake or blood levels. However, clinical trials failed to support those findings and β-carotene supplementation actually increased lung cancer incidence in male smokers. Early experimental animal studies found dietary β-carotene inhibited UV-induced skin cancers. Later studies found that β-carotene supplementation exacerbated UV-carcinogenic expression. The discrepancies of these results were related to the type of diet the animals consumed. Lycopene has been associated with reduced risk of lethal stage prostate cancer. Other carotenoids, e.g., lutein and zeaxanthin, play a vital role in visual health. Numerous studies of molecular mechanisms to explain the carotenoids' mode of action have centered on singlet oxygen, as well as radical reactions. In cellular systems, singlet oxygen quenching by carotenoids has been reported but is more complex than in organic solvents. In dietary β-carotene supplement studies, damaging pro-oxidant reactivity can also arise. Reasons for this switch are likely due to the properties of the carotenoid radicals themselves. Understanding singlet oxygen reactions and the anti-/pro-oxidant roles of carotenoids are of importance to photosynthesis, vision and cancer.
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Affiliation(s)
- Homer S. Black
- Department of Dermatology, Baylor College of Medicine, Houston, TX 77030, USA
| | - Fritz Boehm
- Photobiology Research, Internationales Handelszentrum (IHZ), Friedrichstraße 95, 10117 Berlin, Germany;
| | - Ruth Edge
- Dalton Cumbrian Facility, Westlakes Science Park, The University of Manchester, Cumbria CA24 3HA, UK
| | - T. George Truscott
- School of Chemical and Physical Sciences, Keele University, Keele, Staffordshire ST5 5BG, UK;
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Honda M, Kageyama H, Hibino T, Ichihashi K, Takada W, Goto M. Isomerization of Commercially Important Carotenoids (Lycopene, β-Carotene, and Astaxanthin) by Natural Catalysts: Isothiocyanates and Polysulfides. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:3228-3237. [PMID: 32074447 DOI: 10.1021/acs.jafc.0c00316] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Effects of natural catalysts, isothiocyanates and polysulfides, on Z-isomerization and decomposition of (all-E)-carotenoids (lycopene, β-carotene, and astaxanthin) after heat treatment were investigated. When isothiocyanates were added to (all-E)-carotenoid solutions and heated, Z-isomerization and decomposition of carotenoids were enhanced and the degree differed depending on the isothiocyanate type. Interestingly, when polysulfides were applied in the same manner, in addition to promoting the Z-isomerization reaction, they markedly improved the thermal stability of carotenoids. Successively, we investigated the reaction characteristics of allyl isothiocyanate (AITC) and diallyl disulfide (DADS) using (all-E)-lycopene; that is, effects of the amount added, solvent used, and reaction temperature and time, as well as the combination use on Z-isomerization and decomposition of lycopene, were investigated. With increases in the amount added and reaction temperature and time, Z-isomerization of lycopene was promoted for both catalysts. The high-temperature treatment tests clearly showed that AITC induced thermal decomposition of lycopene, whereas DADS improved the lycopene stability. Moreover, the simultaneous use of AITC and DADS resulted in a synergetic effect on the Z-isomerization efficiency.
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Affiliation(s)
- Masaki Honda
- Faculty of Science & Technology, Meijo University, Shiogamaguchi, Tempaku-ku, Nagoya 468-8502, Japan
| | - Hakuto Kageyama
- Faculty of Science & Technology, Meijo University, Shiogamaguchi, Tempaku-ku, Nagoya 468-8502, Japan
| | - Takashi Hibino
- Faculty of Science & Technology, Meijo University, Shiogamaguchi, Tempaku-ku, Nagoya 468-8502, Japan
| | - Kohei Ichihashi
- Innovation Division, Kagome Company, Ltd., Nishitomiyama, Nasushiobara 329-2762, Japan
| | - Wataru Takada
- Innovation Division, Kagome Company, Ltd., Nishitomiyama, Nasushiobara 329-2762, Japan
| | - Motonobu Goto
- Department of Materials Process Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
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MUKAI K. Antioxidant Activity of Foods: Development of Singlet Oxygen Absorption Capacity (SOAC) Assay Method. J Nutr Sci Vitaminol (Tokyo) 2019; 65:285-302. [DOI: 10.3177/jnsv.65.285] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Kazuo MUKAI
- Department of Chemistry, Faculty of Science, Ehime University
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Mukai K, Ishikawa E, Ouchi A, Nagaoka SI, Abe K, Suzuki T, Izumisawa K. Measurements of Singlet Oxygen-Quenching Activity of Vitamin E Homologs and Palm Oil and Soybean Extracts in a Micellar Solution. Lipids 2018; 53:601-613. [PMID: 30152870 DOI: 10.1002/lipd.12053] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Revised: 06/01/2018] [Accepted: 06/04/2018] [Indexed: 11/07/2022]
Abstract
Recently, a new assay method that can quantify the singlet oxygen-absorption capacity (SOAC) of antioxidants (AO) and food extracts in homogeneous organic solvents has been proposed. In the present study, second-order rate constants (kQ ) for the reaction of singlet oxygen (1 O2 ) with vitamin E homologs (α-, β-, γ-, and δ-tocopherols [Toc] and α-, β-, γ-, and δ-tocotrienols [Toc-3]) were measured in an aqueous Triton X-100 (5.0 wt%) micellar solution (pH 7.4). Toc-3 showed kQ values larger than those of Toc in a micellar solution, although Toc and Toc-3 showed the same kQ values in a homogeneous solution. Similar measurements were performed for 5 palm oil extracts 1-5 and one soybean extract 6, which contained different concentrations of Toc, Toc-3, and carotenoids. It has been clarified that the 1 O2 -quenching rates (kQ ) (that is, the relative SOAC value) obtained for extracts 3-6 may be explained as the sum of the product Σ k Q AO - i AO - i / 100 of the rate constant ( k Q AO - i ) and the concentration ([AO-i]/100) of AO-i contained. The UV-vis absorption spectra of Toc and Toc-3 were measured in a micellar solution and chloroform. The results obtained demonstrated that the kQ values of AO in homogeneous and heterogeneous solutions vary notably depending on (1) polarity (dielectric constant [ε]) of the reaction field between 1 O2 and AO, (2) the local concentration of AO, and (3) the mobility of AO in solution. The results suggest that the SOAC method is applicable to the measurement of 1 O2 -quenching activity of general food extracts in a heterogeneous micellar solution.
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Affiliation(s)
- Kazuo Mukai
- Department of Chemistry, Faculty of Science, Ehime University, Matsuyama, 790-8577, Japan
| | - Eri Ishikawa
- Department of Chemistry, Faculty of Science, Ehime University, Matsuyama, 790-8577, Japan
| | - Aya Ouchi
- Department of Chemistry, Faculty of Science, Ehime University, Matsuyama, 790-8577, Japan
| | - Shin-Ichi Nagaoka
- Department of Chemistry, Faculty of Science, Ehime University, Matsuyama, 790-8577, Japan
| | - Koichi Abe
- SSCI Laboratories, Faculty of Pharmacy, Musashino University, Shinmachi 1-1-20, Nishitokyo-Shi, Tokyo, 202-0023, Japan
| | - Tomomi Suzuki
- Product Development Department, Consumer hhc Business Division, Eisai Company, Ltd., Koishikawa 5-5-5, Bunkyo-ku, Tokyo, 112-8088, Japan
| | - Katsuhiro Izumisawa
- Product Development Department, Consumer hhc Business Division, Eisai Company, Ltd., Koishikawa 5-5-5, Bunkyo-ku, Tokyo, 112-8088, Japan
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Kato S, Shimizu N, Hanzawa Y, Otoki Y, Ito J, Kimura F, Takekoshi S, Sakaino M, Sano T, Eitsuka T, Miyazawa T, Nakagawa K. Determination of triacylglycerol oxidation mechanisms in canola oil using liquid chromatography-tandem mass spectrometry. NPJ Sci Food 2018; 2:1. [PMID: 31304251 PMCID: PMC6550225 DOI: 10.1038/s41538-017-0009-x] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2017] [Revised: 07/23/2017] [Accepted: 08/20/2017] [Indexed: 12/21/2022] Open
Abstract
Triacylglycerol (TG), the main component of edible oil, is oxidized by thermal- or photo- oxidation to form TG hydroperoxide (TGOOH) as the primary oxidation product. Since TGOOH and its subsequent oxidation products cause not only the deterioration of oil quality but also various toxicities, preventing the oxidation of edible oils is essential. Therefore understanding oxidation mechanisms that cause the formation of TGOOH is necessary. Since isomeric information of lipid hydroperoxide provides insights about oil oxidation mechanisms, we focused on dioleoyl-(hydroperoxy octadecadienoyl)-TG (OO-HpODE-TG) isomers, which are the primary oxidation products of the most abundant TG molecular species (dioleoyl-linoleoyl-TG) in canola oil. To secure highly selective and sensitive analysis, authentic OO-HpODE-TG isomer references (i.e., hydroperoxide positional/geometrical isomers) were synthesized and analyzed with HPLC-MS/MS. With the use of the method, photo- or thermal- oxidized edible oils were analyzed. While dioleoyl-(10-hydroperoxy-8E,12Z-octadecadienoyl)-TG (OO-(10-HpODE)-TG) and dioleoyl-(12-hydroperoxy-9Z,13E-octadecadienoyl)-TG (OO-(12-HpODE)-TG) were characteristically detected in photo-oxidized oils, dioleoyl-(9-hydroperoxy-10E,12E-octadecadienoyl)-TG and dioleoyl-(13-hydroperoxy-9E,11E-octadecadienoyl)-TG were found to increase depending on temperature in thermal-oxidized oils. These results prove that our methods not only evaluate oil oxidation in levels that are unquantifiable with peroxide value, but also allows for the determination of oil oxidation mechanisms. From the analysis of marketed canola oils, photo-oxidized products (i.e., OO-(10-HpODE)-TG and OO-(12-HpODE)-TG) were characteristically accumulated compared to the oil analyzed immediately after production. The method described in this paper is valuable in the understanding of oil and food oxidation mechanisms, and may be applied to the development of preventive methods against food deterioration. Edible oils become rancid when reacting with oxygen under light or heat, degrading into different products depending on the pathway. Kiyotaka Nakagawa at Tohoku University, Japan, and co-workers used instruments that can separate and identify by weight components in mixtures to study light- and heat-induced oxidation of canola oil. Using authentic samples of possible oxidation products as references, the team found that each process generated two unique species from triacylglycerol, the main ingredient in edible oils. These signature compounds allowed the researchers to reveal that heat-oxidation sped up as temperature increased and that light-oxidized products gradually accumulated in off-the-shelf canola oil after production. This method is more sensitive than conventional protocols and can tell exactly how oils are oxidized, useful for developing techniques for food preservation.
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Affiliation(s)
- Shunji Kato
- 1Food and Biodynamic Chemistry Laboratory, Graduate School of Agricultural Science, Tohoku University, Sendai, Miyagi 980-0845 Japan.,2Department of Cell Biology, Division of Host Defense Mechanism, Tokai University School of Medicine, Isehara, Kanagawa 259-1193 Japan
| | - Naoki Shimizu
- 1Food and Biodynamic Chemistry Laboratory, Graduate School of Agricultural Science, Tohoku University, Sendai, Miyagi 980-0845 Japan
| | - Yasuhiko Hanzawa
- 1Food and Biodynamic Chemistry Laboratory, Graduate School of Agricultural Science, Tohoku University, Sendai, Miyagi 980-0845 Japan
| | - Yurika Otoki
- 1Food and Biodynamic Chemistry Laboratory, Graduate School of Agricultural Science, Tohoku University, Sendai, Miyagi 980-0845 Japan
| | - Junya Ito
- 1Food and Biodynamic Chemistry Laboratory, Graduate School of Agricultural Science, Tohoku University, Sendai, Miyagi 980-0845 Japan
| | - Fumiko Kimura
- 3Department of Human Health and Nutrition, Shokei Gakuin University, Natori, Miyagi 981-1295 Japan
| | - Susumu Takekoshi
- 2Department of Cell Biology, Division of Host Defense Mechanism, Tokai University School of Medicine, Isehara, Kanagawa 259-1193 Japan
| | - Masayoshi Sakaino
- Fundamental Research Laboratory, J-OIL MILLS, INC., Yokohama, Kanagawa 230-0053 Japan
| | - Takashi Sano
- Fundamental Research Laboratory, J-OIL MILLS, INC., Yokohama, Kanagawa 230-0053 Japan
| | - Takahiro Eitsuka
- 1Food and Biodynamic Chemistry Laboratory, Graduate School of Agricultural Science, Tohoku University, Sendai, Miyagi 980-0845 Japan
| | - Teruo Miyazawa
- 5Food and Biotechnology Innovation Project, New Industry Creation Hatchery Center (NICHe), Tohoku University, Sendai, Miyagi 980-8579 Japan.,6Food and Health Science Research Unit, Graduate School of Agricultural Science, Tohoku University, Sendai, Miyagi 981-8555 Japan
| | - Kiyotaka Nakagawa
- 1Food and Biodynamic Chemistry Laboratory, Graduate School of Agricultural Science, Tohoku University, Sendai, Miyagi 980-0845 Japan
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Edge R, Truscott TG. Singlet Oxygen and Free Radical Reactions of Retinoids and Carotenoids-A Review. Antioxidants (Basel) 2018; 7:antiox7010005. [PMID: 29301252 PMCID: PMC5789315 DOI: 10.3390/antiox7010005] [Citation(s) in RCA: 82] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Revised: 12/11/2017] [Accepted: 12/29/2017] [Indexed: 12/29/2022] Open
Abstract
We report on studies of reactions of singlet oxygen with carotenoids and retinoids and a range of free radical studies on carotenoids and retinoids with emphasis on recent work, dietary carotenoids and the role of oxygen in biological processes. Many previous reviews are cited and updated together with new data not previously reviewed. The review does not deal with computational studies but the emphasis is on laboratory-based results. We contrast the ease of study of both singlet oxygen and polyene radical cations compared to neutral radicals. Of particular interest is the switch from anti- to pro-oxidant behavior of a carotenoid with change of oxygen concentration: results for lycopene in a cellular model system show total protection of the human cells studied at zero oxygen concentration, but zero protection at 100% oxygen concentration.
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Affiliation(s)
- Ruth Edge
- Dalton Cumbrian Facility, The University of Manchester, Westlakes Science and Technology Park, Moor Row, Cumbria CA24 3HA, UK.
| | - T George Truscott
- School of Chemical and Physical Sciences, Lennard-Jones Building, Keele University, Staffordshire ST5 5BG, UK.
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14
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López-López M, López-Cornejo P, Lebrón JA, Ostos FJ, Moyá ML. Binding and reactivity under restricted geometry conditions: Applicability of the Pseudophase Model to thermal and photochemical processes. Curr Opin Colloid Interface Sci 2017. [DOI: 10.1016/j.cocis.2017.09.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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