1
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Li H, Zhang Q. Research Progress of Flavonoids Regulating Endothelial Function. Pharmaceuticals (Basel) 2023; 16:1201. [PMID: 37765009 PMCID: PMC10534649 DOI: 10.3390/ph16091201] [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: 07/17/2023] [Revised: 08/09/2023] [Accepted: 08/20/2023] [Indexed: 09/29/2023] Open
Abstract
The endothelium, as the guardian of vascular homeostasis, is closely related to the occurrence and development of cardiovascular diseases (CVDs). As an early marker of the development of a series of vascular diseases, endothelial dysfunction is often accompanied by oxidative stress and inflammatory response. Natural flavonoids in fruits, vegetables, and Chinese herbal medicines have been shown to induce and regulate endothelial cells and exert anti-inflammatory, anti-oxidative stress, and anti-aging effects in a large number of in vitro models and in vivo experiments so as to achieve the prevention and improvement of cardiovascular disease. Focusing on endothelial mediation, this paper introduces the signaling pathways involved in the improvement of endothelial dysfunction by common dietary and flavonoids in traditional Chinese medicine and describes them based on their metabolism in the human body and their relationship with the intestinal flora. The aim of this paper is to demonstrate the broad pharmacological activity and target development potential of flavonoids as food supplements and drug components in regulating endothelial function and thus in the prevention and treatment of cardiovascular diseases. This paper also introduces the application of some new nanoparticle carriers in order to improve their bioavailability in the human body and play a broader role in vascular protection.
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Affiliation(s)
| | - Qi Zhang
- The Basic Medical College, Shaanxi University of Chinese Medicine, Xianyang 712046, China;
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2
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Taniguchi M, LaRocca CA, Bernat JD, Lindsey JS. Digital Database of Absorption Spectra of Diverse Flavonoids Enables Structural Comparisons and Quantitative Evaluations. JOURNAL OF NATURAL PRODUCTS 2023; 86:1087-1119. [PMID: 36848595 DOI: 10.1021/acs.jnatprod.2c00720] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Flavonoids play diverse roles in plants, comprise a non-negligible fraction of net primary photosynthetic production, and impart beneficial effects in human health from a plant-based diet. Absorption spectroscopy is an essential tool for quantitation of flavonoids isolated from complex plant extracts. The absorption spectra of flavonoids typically consist of two major bands, band I (300-380 nm) and band II (240-295 nm), where the former engenders a yellow color; in some flavonoids the absorption tails to 400-450 nm. The absorption spectra of 177 flavonoids and analogues of natural or synthetic origin have been assembled, including molar absorption coefficients (109 from the literature, 68 measured here). The spectral data are in digital form and can be viewed and accessed at http://www.photochemcad.com. The database enables comparison of the absorption spectral features of 12 distinct types of flavonoids including flavan-3-ols (e.g., catechin, epigallocatechin), flavanones (e.g., hesperidin, naringin), 3-hydroxyflavanones (e.g., taxifolin, silybin), isoflavones (e.g., daidzein, genistein), flavones (e.g., diosmin, luteolin), and flavonols (e.g., fisetin, myricetin). The structural features that give rise to shifts in wavelength and intensity are delineated. The availability of digital absorption spectra for diverse flavonoids facilitates analysis and quantitation of these valuable plant secondary metabolites. Four examples are provided of calculations─multicomponent analysis, solar ultraviolet photoprotection, sun protection factor (SPF), and Förster resonance energy transfer (FRET)─for which the spectra and accompanying molar absorption coefficients are sine qua non.
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Affiliation(s)
- Masahiko Taniguchi
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204, United States
| | - Connor A LaRocca
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204, United States
| | - Jake D Bernat
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204, United States
| | - Jonathan S Lindsey
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204, United States
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3
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Wang Y, Yao X, Shen H, Zhao R, Li Z, Shen X, Wang F, Chen K, Zhou Y, Li B, Zheng X, Lu S. Nutritional Composition, Efficacy, and Processing of Vigna angularis (Adzuki Bean) for the Human Diet: An Overview. Molecules 2022; 27:molecules27186079. [PMID: 36144812 PMCID: PMC9506481 DOI: 10.3390/molecules27186079] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 09/05/2022] [Accepted: 09/13/2022] [Indexed: 11/16/2022] Open
Abstract
Adzuki beans are grown in several countries around the world and are widely popular in Asia, where they are often prepared in various food forms. Adzuki beans are rich in starch, and their proteins contain a balanced variety of amino acids with high lysine content, making up for the lack of protein content of cereals in the daily diet. Therefore, the research on adzuki beans and the development of their products have broad prospects for development. The starch, protein, fat, polysaccharide, and polyphenol contents and compositions of adzuki beans vary greatly among different varieties. The processing characteristic components of adzuki beans, such as starch, isolated protein, and heated flavor, are reported with a view to further promote the processing and development of adzuki bean foods. In addition to favorable edibility, the human health benefits of adzuki beans include antioxidant, antibacterial, and anti-inflammatory properties. Furtherly, adzuki beans and extracts have positive effects on the prevention and treatment of diseases, including diabetes, diabetes-induced kidney disease or kidney damage, obesity, and high-fat-induced cognitive decline. This also makes a case for the dual use of adzuki beans for food and medicine and contributes to the promotion of adzuki beans as a healthy, edible legume.
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Affiliation(s)
- Yao Wang
- Food Processing Research Institute, Heilongjiang Academy of Agricultural Sciences, Harbin 150086, China
- Heilongjiang Province Key Laboratory of Food Processing, Harbin 150086, China
| | - Xinmiao Yao
- Food Processing Research Institute, Heilongjiang Academy of Agricultural Sciences, Harbin 150086, China
- Heilongjiang Province Key Laboratory of Food Processing, Harbin 150086, China
- Correspondence: ; Tel.: +086-0451-86610259
| | - Huifang Shen
- Food Processing Research Institute, Heilongjiang Academy of Agricultural Sciences, Harbin 150086, China
- Heilongjiang Province Key Laboratory of Food Processing, Harbin 150086, China
| | - Rui Zhao
- Food Processing Research Institute, Heilongjiang Academy of Agricultural Sciences, Harbin 150086, China
- Heilongjiang Province Key Laboratory of Food Processing, Harbin 150086, China
| | - Zhebin Li
- Food Processing Research Institute, Heilongjiang Academy of Agricultural Sciences, Harbin 150086, China
- Heilongjiang Province Key Laboratory of Food Processing, Harbin 150086, China
| | - Xinting Shen
- Food Processing Research Institute, Heilongjiang Academy of Agricultural Sciences, Harbin 150086, China
- Heilongjiang Province Key Laboratory of Food Processing, Harbin 150086, China
| | - Fei Wang
- Food Processing Research Institute, Heilongjiang Academy of Agricultural Sciences, Harbin 150086, China
- Heilongjiang Province Key Laboratory of Food Processing, Harbin 150086, China
| | - Kaixin Chen
- Food Processing Research Institute, Heilongjiang Academy of Agricultural Sciences, Harbin 150086, China
- Heilongjiang Province Key Laboratory of Food Processing, Harbin 150086, China
| | - Ye Zhou
- Food Processing Research Institute, Heilongjiang Academy of Agricultural Sciences, Harbin 150086, China
- Heilongjiang Province Key Laboratory of Food Processing, Harbin 150086, China
| | - Bo Li
- Food Processing Research Institute, Heilongjiang Academy of Agricultural Sciences, Harbin 150086, China
- Heilongjiang Province Key Laboratory of Food Processing, Harbin 150086, China
| | - Xianzhe Zheng
- China School of Engineering, Northeast Agricultural University, Harbin 150030, China
| | - Shuwen Lu
- Food Processing Research Institute, Heilongjiang Academy of Agricultural Sciences, Harbin 150086, China
- Heilongjiang Province Key Laboratory of Food Processing, Harbin 150086, China
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4
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Desta KT, Yoon H, Shin MJ, Lee S, Wang XH, Choi YM, Yi JY. Variability of Anthocyanin Concentrations, Total Metabolite Contents and Antioxidant Activities in Adzuki Bean Cultivars. Antioxidants (Basel) 2022; 11:antiox11061134. [PMID: 35740028 PMCID: PMC9220110 DOI: 10.3390/antiox11061134] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 06/05/2022] [Accepted: 06/07/2022] [Indexed: 11/20/2022] Open
Abstract
In this study, adzuki bean cultivars including Arari, Chilbopat, Geomguseul, and Hongeon were recently cultivated, and the concentrations of seven individual anthocyanins were determined in their seed coats for the first time. Moreover, the variations of total saponin content (TSC), total phenolic content (TPC), 1,1-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity, Trolox equivalent antioxidant capacity (TEAC), and ferric reducing antioxidant power (FRAP) between defatted and undefatted extracts of whole seeds, seed coats, and dehulled seeds of each were analyzed. The anthocyanins were detected only in the black seed-coated cultivars and delphinidin-3-O-glucoside was dominant in both Geomguseul (12.46 mg/g) and Chilbopat (10.88 mg/g) followed by delphinidin-3-O-galactoside. TSC and TPC were in the ranges of 16.20−944.78 mg DE/g and 0.80−57.35 mg GAE/g, respectively, and each decreased in the order of seed coats > whole seeds > dehulled seeds regardless of extract type. The antioxidant activities also showed similar patterns of variation. Geomguseul seed coats outweighed the remaining cultivars in terms of TPC and FRAP activity (p < 0.05). Generally, significant variations of metabolite contents and antioxidant activities were observed between cultivars and across their seed parts (p < 0.05). Thence, black seed-coated adzuki beans could be excellent sources of anthocyanins and antioxidants.
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5
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Teng H, Zheng Y, Cao H, Huang Q, Xiao J, Chen L. Enhancement of bioavailability and bioactivity of diet-derived flavonoids by application of nanotechnology: a review. Crit Rev Food Sci Nutr 2021; 63:378-393. [PMID: 34278842 DOI: 10.1080/10408398.2021.1947772] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Flavonoids, which are a class of polyphenols widely existing in food and medicine, have enormous pharmacological effects. The functional properties of flavonoids are mainly distributed to their anti-oxidative, anticancer, and anti-inflammatoryeffects, etc. However, flavonoids' low bioavailability limits their clinical application, which is closely related to their intestinal absorption and metabolism. In addition, because of the short residence time of oral bioactive molecules in the stomach, low permeability and low solubility in the gastrointestinal tract, flavonoids are easy to be decomposed by the external environment and gastrointestinal tract after digestion. To tackle these obstacles, technological approaches like microencapsulation have been developed and applied for the formulation of flavonoid-enriched food products. In the light of these scientific advances, the objective of this review is to establish the structural requirements of flavonoids for appreciable anticancer, anti-inflammatory, and antioxidant effects, and elucidate a comprehensive mechanism that can explain their activity. Furthermore, the novelty in application of nanotechnology for the safe delivery of flavonoids in food matrices is discussed. After a literature on the flavonoids and their health attributes, the encapsulation methods and the coating materials are presented.
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Affiliation(s)
- Hui Teng
- College of Food Science and Technology, Guangdong Ocean University, Zhanjiang, China
| | - Yimei Zheng
- College of Food Science and Technology, Guangdong Ocean University, Zhanjiang, China
| | - Hui Cao
- College of Food Science and Technology, Guangdong Ocean University, Zhanjiang, China
| | - Qun Huang
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, China.,Meat Processing Key Laboratory of Sichuan Province, School of Food and Biological Engineering, Chengdu University, Chengdu, China
| | - Jianbo Xiao
- International Research Center for Food Nutrition and Safety, Jiangsu University, Zhenjiang, China.,Department of Analytical Chemistry and Food Science, Faculty of Food Science and Technology, University of Vigo, Vigo, Spain
| | - Lei Chen
- College of Food Science and Technology, Guangdong Ocean University, Zhanjiang, China
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6
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Mena-García A, Ruiz-Matute AI, Soria AC, Sanz ML. A multi-analytical strategy for evaluation of quality and authenticity of artichoke food supplements for overweight control. J Chromatogr A 2021; 1647:462102. [PMID: 33964619 DOI: 10.1016/j.chroma.2021.462102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Revised: 03/15/2021] [Accepted: 03/21/2021] [Indexed: 11/16/2022]
Abstract
Despite the widespread use of artichoke-based food supplements for obesity control (FSOC), studies on evaluation of the quality/authenticity of these commercial products are scarce. To that aim, a new multi-analytical strategy, based on the use of gas chromatography coupled to mass spectrometry (GC-MS) and high performance liquid chromatography coupled to ultraviolet and mass spectrometry detection (HPLC-UV-MS), in combination with chemometrics, has been developed. Twenty-one artichoke FSOC and different bract and leaf extracts (used as reference samples) were analysed. Sugars, inositols, caffeoylquinic acids, dicaffeoylquinic acids, flavonoids and their glycosides were detected in reference samples and in most artichoke FSOC. Low concentrations of bioactives, and the presence of other compounds probably related to heat treatment during manufacturing (difructosyl anhydrides, 3-deoxyglucosone), or to the addition of caloric additives (maltose, maltotriose) or non-declared plants (e.g. pinitol, disaccharides, silybin derivatives) were also detected in some FSOC by either GC-MS or HPLC-UV-MS. Application of Principal Component Analysis to the combined GC-MS + HPLC-UV data matrix, proved that this multi-analytical strategy provides advantages over single analytical techniques for the detection of the wide variety of fraudulent practices affecting authenticity of artichoke FSOC and for assessment of their quality.
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Affiliation(s)
- Adal Mena-García
- Instituto de Química Orgánica General (CSIC). Juan de la Cierva, 3 28006 Madrid Spain
| | | | - Ana Cristina Soria
- Instituto de Química Orgánica General (CSIC). Juan de la Cierva, 3 28006 Madrid Spain
| | - María Luz Sanz
- Instituto de Química Orgánica General (CSIC). Juan de la Cierva, 3 28006 Madrid Spain.
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7
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Slower liberation and digestion of amylose in high-amylose rice cooked with adzuki bean: contribution of procyanidins. Eur Food Res Technol 2020. [DOI: 10.1007/s00217-020-03612-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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8
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Morina F, Hirota S, Takahama U. Contribution of amylose-procyanidin complexes to slower starch digestion of red-colored rice prepared by cooking with adzuki bean. Int J Food Sci Nutr 2020; 71:715-725. [DOI: 10.1080/09637486.2020.1719389] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Filis Morina
- Faculty of Allied Health Sciences, University of East Asia, Shimonoseki, Japan
- Department of Plant Biophysics and Biochemistry, Czech Academy of Sciences, Biology Centre, Institute of Plant Molecular Biology, České Budějovice, Czech Republic
- Institute for Multidisciplinary Research, University of Belgrade, Belgrade, Serbia
| | - Sachiko Hirota
- Faculty of Allied Health Sciences, University of East Asia, Shimonoseki, Japan
| | - Umeo Takahama
- Faculty of Allied Health Sciences, University of East Asia, Shimonoseki, Japan
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9
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Xie Z, Li X, Tang R, Wang G, Lu Y, Li X, Cheng K, Li L, He Q. Reactions of polyphenols in pomegranate peel with nitrite under simulated stomach conditions. Food Sci Nutr 2019; 7:3103-3109. [PMID: 31572603 PMCID: PMC6766573 DOI: 10.1002/fsn3.1173] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 04/24/2019] [Accepted: 07/22/2019] [Indexed: 01/03/2023] Open
Abstract
Punicalagin and ellagic acid are the major polyphenols present in pomegranate peels. The contents of α-punicalagin, β-punicalagin, and ellagic acid in the pomegranate peels were approximately 75, 72, and 20 µM, respectively. The reactions of polyphenols in pomegranate peels with sodium nitrite under simulated stomach conditions were studied. The reactions decreased the polyphenolic contents of the pomegranate peels and accompanied the formation of nitroso compounds. The oxidation rates followed the order ellagic acid <α-punicalagin ≈ β-punicalagin. The results suggested that the reactions can occur in the stomach after a meal, while the pH changes from 2 to 4.5.
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Affiliation(s)
- Zhenjian Xie
- College of Pharmacy and Biological EngineeringChengdu UniversityChengduChina
- College of Light Industry and Food EngineeringSichuan UniversityChengduChina
| | - Xiaohong Li
- College of Pharmacy and Biological EngineeringChengdu UniversityChengduChina
| | - Renyong Tang
- College of Pharmacy and Biological EngineeringChengdu UniversityChengduChina
| | - Guoze Wang
- College of Pharmacy and Biological EngineeringChengdu UniversityChengduChina
| | - Yurong Lu
- College of Pharmacy and Biological EngineeringChengdu UniversityChengduChina
| | - Xuemei Li
- College of Pharmacy and Biological EngineeringChengdu UniversityChengduChina
| | - Kun Cheng
- College of Pharmacy and Biological EngineeringChengdu UniversityChengduChina
| | - Linzhi Li
- College of Pharmacy and Biological EngineeringChengdu UniversityChengduChina
| | - Qiang He
- College of Light Industry and Food EngineeringSichuan UniversityChengduChina
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10
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Takahama U, Hirota S, Morina F. Procyanidins in rice cooked with adzuki bean and their contribution to the reduction of nitrite to nitric oxide (•NO) in artificial gastric juice. Int J Food Sci Nutr 2019; 71:63-73. [DOI: 10.1080/09637486.2019.1605338] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Umeo Takahama
- Faculty of Allied Health Sciences, University of East Asia, Shimonoseki, Japan
| | - Sachiko Hirota
- Faculty of Allied Health Sciences, University of East Asia, Shimonoseki, Japan
| | - Filis Morina
- Faculty of Allied Health Sciences, University of East Asia, Shimonoseki, Japan
- Biology Center of the Czech Academy of Sciences, Institute of Plant Molecular Biology, České Budejovice, Czechia
- Institute for Multidisciplinary Research, University of Belgrade, Belgrade, Serbia
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11
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Takahama U, Hirota S, Yanase E. Slow starch digestion in the rice cooked with adzuki bean: Contribution of procyanidins and the oxidation products. Food Res Int 2019; 119:187-195. [DOI: 10.1016/j.foodres.2019.01.062] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Revised: 01/21/2019] [Accepted: 01/23/2019] [Indexed: 12/19/2022]
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12
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Hirota S, Takahama U. Suppression of Pancreatin-Induced Digestion of Starch in Starch Granules by Starch/Fatty Acid and Starch/Flavonoid Complexes in Retrograding Rice Flour. Foods 2018; 7:E128. [PMID: 30103415 PMCID: PMC6111713 DOI: 10.3390/foods7080128] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Revised: 07/31/2018] [Accepted: 08/08/2018] [Indexed: 12/02/2022] Open
Abstract
Adzuki beans are used to prepare foods with glutinous and non-glutinous rice in Japan, and adzuki bean pigments are able to color rice starch a purplish red. This study deals with the adzuki bean extract-dependent suppression of starch digestion of non-glutinous rice flour (joshinko in Japanese), which was gelatinized in boiling water and then cooled to 37 °C. Accompanying the treatment of joshinko with pancreatin, amylose and amylopectin were released from the joshinko particles, and the released amylose and amylopectin were further digested. The adzuki extract suppressed the release and digestion by binding to amylose and amylopectin, which were present in the particles and at the surfaces of the particles. Fatty acids and flavonoids in the adzuki extract contributed to the suppression. In addition, the starch digestion in the joshinko particles appeared to be suppressed if the amylose/fatty acid complexes and amylose/flavonoid and amylopectin/flavonoid complexes, which are poor substrates of α-amylase, surrounded the particles. It is discussed that the suppression was due to the prevention of α-amylase access to the particles.
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Affiliation(s)
- Sachiko Hirota
- Department of Health and Nutrition Care, Faculty of Allied Health Sciences, University of East Asia, Shimonoseki 751-8503, Japan.
| | - Umeo Takahama
- Department of Health and Nutrition Care, Faculty of Allied Health Sciences, University of East Asia, Shimonoseki 751-8503, Japan.
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13
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Takahama U, Hirota S. Interactions of flavonoids with α-amylase and starch slowing down its digestion. Food Funct 2018; 9:677-687. [DOI: 10.1039/c7fo01539a] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Hydrophobic flavonoids can suppress starch digestion in the intestine by forming starch-flavonoid complexes.
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Affiliation(s)
- Umeo Takahama
- Department of Health and Nutritional Care
- Faculty of Allied Health Sciences
- University of East Asia
- Shimonoseki
- Japan
| | - Sachiko Hirota
- Department of Health and Nutritional Care
- Faculty of Allied Health Sciences
- University of East Asia
- Shimonoseki
- Japan
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14
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Herraiz T, Galisteo J. Nitrosative deamination of 2'-deoxyguanosine and DNA by nitrite, and antinitrosating activity of β-carboline alkaloids and antioxidants. Food Chem Toxicol 2017; 112:282-289. [PMID: 29277703 DOI: 10.1016/j.fct.2017.12.042] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Revised: 12/20/2017] [Accepted: 12/21/2017] [Indexed: 02/01/2023]
Abstract
Endogenous and dietary nitrite produces reactive nitrogen species (RNS) that react with DNA causing mutations. The nitrosation of 2'-deoxyguanosine (dGuo) and DNA with nitrite was studied under different conditions, and the reaction and degradation products identified and analysed by HPLC-DAD-MS. Nitrosative deamination of dGuo produced xanthine along with 2'-deoxyxanthosine whereas DNA afforded xanthine. Formation of xanthine increased with nitrite concentration and in low pH such as that of stomach. Xanthine was measured as a marker of nitrosation of dGuo and DNA, and it was subsequently used to study the antinitrosating activity of β-carboline alkaloids, and selected antioxidants. Food-occurring tetrahydro-β-carbolines (THβCs) decreased nitrosative deamination of dGuo and DNA under conditions simulating the stomach. Antinitrosating activity was also evidenced for flavonoids (catechin, quercetin) and indole (melatonin) antioxidants. Among THβCs the most active antinitrosating compounds were 1,2,3,4-tetrahydro-β-carboline-3-carboxylic acids (THβC-3-COOHs) that reacted with nitrite to give N-nitroso derivatives as main products along with 3,4-dihydro-β-carboline-3-carboxylic acids and aromatic β-carbolines (norharman and harman). Antinitrosating activity of THβCs correlated well with the formation of N-nitroso-THβC-3-COOHs. These N-nitroso derivatives were stable at pH 7 but degraded in acid conditions affording nitrosating species.
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Affiliation(s)
- Tomás Herraiz
- Instituto de Ciencia y Tecnología de Alimentos y Nutrición (ICTAN), Spanish National Research Council (CSIC), Juan de la Cierva 3, 28006, Madrid, Spain.
| | - Juan Galisteo
- Instituto de Ciencia y Tecnología de Alimentos y Nutrición (ICTAN), Spanish National Research Council (CSIC), Juan de la Cierva 3, 28006, Madrid, Spain
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15
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Takahama U, Hirota S. Possible Reactions of Dietary Phenolic Compounds with Salivary Nitrite and Thiocyanate in the Stomach. Antioxidants (Basel) 2017; 6:antiox6030053. [PMID: 28678174 PMCID: PMC5618081 DOI: 10.3390/antiox6030053] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 06/27/2017] [Accepted: 07/01/2017] [Indexed: 01/22/2023] Open
Abstract
Foods are mixed with saliva in the oral cavity and swallowed. While staying in the stomach, saliva is contentiously provided to mix with the ingested foods. Because a salivary component of nitrite is protonated to produce active nitrous acid at acidic pH, the redox reactions of nitrous acid with phenolic compounds in foods become possible in the stomach. In the reactions, nitrous acid is reduced to nitric oxide (•NO), producing various products from phenolic compounds. In the products, stable hydroxybezoyl benzofuranone derivatives, which are produced from quercetin and its 7-O-glucoside, are included. Caffeic acid, chlorogenic acid, and rutin are oxidized to quinones and the quinones can react with thiocyanic acid derived from saliva, producing stable oxathiolone derivatives. 6,8-Dinitrosocatechis are produced from catechins by the redox reaction, and the dinitrocatechins are oxidized further by nitrous acid producing the quinones, which can make charge transfer complexes with the dinitrosocatechin and can react with thiocyanic acid producing the stable thiocyanate conjugates. In this way, various products can be produced by the reactions of salivary nitrite with dietary phenolic compounds, and reactive and toxic quinones formed by the reactions are postulated to be removed in the stomach by thiocyanic acid derived from saliva.
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Affiliation(s)
- Umeo Takahama
- Department of Health and Nutrition Care, Faculty of Allied Health Sciences, University of East Asia, Shimonoseki 751-8503, Japan.
| | - Sachiko Hirota
- Department of Health and Nutrition Care, Faculty of Allied Health Sciences, University of East Asia, Shimonoseki 751-8503, Japan.
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16
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Hirota S, Takahama U. Inhibition of Pancreatin-Induced Digestion of Cooked Rice Starch by Adzuki (Vigana angularis) Bean Flavonoids and the Possibility of a Decrease in the Inhibitory Effects in the Stomach. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:2172-2179. [PMID: 28219009 DOI: 10.1021/acs.jafc.6b05442] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Flavonoids of adzuki bean bind to starch when the beans are cooked with rice. The purpose of this study is to show that adzuki flavonoids can suppress pancreatin-induced digestion of cooked rice starch. The diethyl ether extract of water boiled with adzuki bean inhibited starch digestion, and quercetin and a cyanidin-catechin conjugate (vignacyanidin) but not taxifolin in the extract contributed to the inhibition. The order of their inhibitory effects (taxifolin < quercetin < vignacyanidin) suggested that the effects increased with an increase in their hydrophobicity. The diethyl ether extract also inhibited the starch digestion of cooked rice preincubated in artificial gastric juice, and the level of inhibition was decreased by nitrite. The decrease was due to nitrite-induced consumption of quercetin and vignacyanidin. Taking these results into account, we discuss mechanisms of quercetin- and vignacyanidin-dependent inhibition of starch digestion and the possibility of the decrease in their inhibitory effects by nitrite in the stomach.
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Affiliation(s)
- Sachiko Hirota
- Department of Health and Nutrition Care, Faculty of Allied Health Sciences, University of East Asia , Shimonoseki 751-8503, Japan
| | - Umeo Takahama
- Department of Health and Nutrition Care, Faculty of Allied Health Sciences, University of East Asia , Shimonoseki 751-8503, Japan
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