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Wan Y, Ma D, Shang Q, Xu H. Association between dietary flavonoid intake and hypertension among U.S. adults. Front Immunol 2024; 15:1380493. [PMID: 38680497 PMCID: PMC11046732 DOI: 10.3389/fimmu.2024.1380493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Accepted: 03/22/2024] [Indexed: 05/01/2024] Open
Abstract
Background Hypertension is one of the major risk factors for cardiovascular disease. Dietary flavonoids have been reported to reduce inflammation, protect against oxidative stress, protect the vascular endothelium, and improve vascular health. However, the relationship between dietary flavonoid intake and the prevalence of hypertension remains controversial. Methods This study included 8010 adults from the 2007-2010 and 2017-2018 National Health and Nutrition Examination Surveys (NHANES). The relationship between dietary flavonoid intake and the prevalence of hypertension was explored by weighted logistic regression and weighted restricted cubic spline. Results We found an inverse relationship between total anthocyanin intake and the prevalence of hypertension in the fourth quartile compared with the first quartile [0.81(0.66,0.99), p = 0.04]. Moreover, the prevalence of hypertension tended to decrease with increasing total anthocyanin intake in participants over 60 years of age. In addition, we found a U-shaped relationship between the prevalence of hypertension and total flavan-3-ol intake. Total flavan-3-ol intake was inversely associated with hypertension prevalence in the third quartile compared with the first quartile [0.79 (0.63,0.99), p = 0.04]. Moreover, there was a significant negative association between the prevalence of hypertension and total flavan-3-ol intake when total flavan-3-ol intake was below 48.26 mg/day. Conclusion Our study found a negative association between the prevalence of hypertension and moderate total anthocyanins intake and total flavan-3-ols intake. Our study provides evidence from a population-based study for a negative association between dietary flavonoid intake and the prevalence of hypertension.
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Affiliation(s)
- Yingying Wan
- National Clinical Research Center for Chinese Medicine Cardiology, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Dan Ma
- China Academy of Chinese Medical Sciences, Xiyuan Hospital Suzhou Hospital, Suzhou, China
| | - Qinghua Shang
- National Clinical Research Center for Chinese Medicine Cardiology, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Hao Xu
- National Clinical Research Center for Chinese Medicine Cardiology, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
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Feng J, Zhang W, Wang W, Nieuwenhuizen NJ, Atkinson RG, Gao L, Hu H, Zhao W, Ma R, Zheng H, Tao J. Integrated Transcriptomic and Proteomic Analysis Identifies Novel Regulatory Genes Associated with Plant Growth Regulator-Induced Astringency in Grape Berries. J Agric Food Chem 2024; 72:4433-4447. [PMID: 38354220 DOI: 10.1021/acs.jafc.3c04408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/16/2024]
Abstract
Astringency influences the sensory characteristics and flavor quality of table grapes. We tested the astringency sensory attributes of berries and investigated the concentration of flavan-3-ols/proanthocyanidins (PAs) in skins after the application of the plant growth regulators CPPU and GA3 to the flowers and young berries of the "Summer Black" grape. Our results showed that CPPU and GA3 applications increase sensory astringency perception scores and flavan-3-ol/proanthocyanidin concentrations. Using integrated transcriptomic and proteomic analysis, differentially expressed transcripts and proteins associated with growth regulator treatment were identified, including those for flavonoid biosynthesis that contribute to the changes in sensory astringency levels. Transient overexpression of candidate astringency-related regulatory genes in grape leaves revealed that VvWRKY71, in combination with VvMYBPA1 and VvMYC1, could promote the biosynthesis of proanthocyanidins, while overexpression of VvNAC83 reduced the accumulation of proanthocyanidins. However, in transient promoter studies in Nicotiana benthamiana, VvWRKY71 repressed the promoter of VvMYBPA2, while VvNAC83 had no significant effect on the promoter activity of four PA-related genes, and VvMYBPA1 was shown to activate its own promoter. This study provides new insights into the molecular mechanisms of sensory astringency formation induced by plant growth regulators in grape berries.
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Affiliation(s)
- Jiao Feng
- College of Horticulture, Sanya Institute of Nanjing Agricultural University (NJAU), Nanjing 210095, China
| | - Wen Zhang
- Institute of Horticultural Crops, Xinjiang Academy of Agricultural Science, Urumqi,Xinjiang 830001, China
| | - Wu Wang
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China
| | - Niels J Nieuwenhuizen
- The New Zealand Institute for Plant and Food Research Ltd (PFR), Auckland 92169, New Zealand
| | - Ross G Atkinson
- The New Zealand Institute for Plant and Food Research Ltd (PFR), Auckland 92169, New Zealand
| | - Lei Gao
- College of Horticulture, Sanya Institute of Nanjing Agricultural University (NJAU), Nanjing 210095, China
| | - Haipeng Hu
- College of Horticulture, Sanya Institute of Nanjing Agricultural University (NJAU), Nanjing 210095, China
| | - Wanli Zhao
- College of Horticulture, Sanya Institute of Nanjing Agricultural University (NJAU), Nanjing 210095, China
| | - Ruiyang Ma
- College of Horticulture, Sanya Institute of Nanjing Agricultural University (NJAU), Nanjing 210095, China
| | - Huan Zheng
- College of Horticulture, Sanya Institute of Nanjing Agricultural University (NJAU), Nanjing 210095, China
| | - Jianmin Tao
- Institute of Horticultural Crops, Xinjiang Academy of Agricultural Science, Urumqi,Xinjiang 830001, China
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Zhu Y, Yuzuak S, Sun X, Xie DY. Identification and biosynthesis of plant papanridins, a group of novel oligomeric flavonoids. Mol Plant 2023; 16:1773-1793. [PMID: 37749887 DOI: 10.1016/j.molp.2023.09.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Revised: 08/22/2023] [Accepted: 09/20/2023] [Indexed: 09/27/2023]
Abstract
The discovery of novel flavonoids and elucidation of their biosynthesis are fundamental to understanding their roles in plants and their benefits for human and animal health. Here, we report a new pathway for polymerization of a group of novel oligomeric flavonoids in plants. We engineered red cells for discovering genes of interest involved in the flavonoid pathway and identified a gene encoding a novel flavanol polymerase (FP) localized in the central vacuole. FP catalyzes the polymerization of flavanols, such as epicatechin and catechin, to produce yellowish dimers or oligomers. Structural elucidation shows that these compounds feature a novel oligomeric flaven-flavan (FF) skeleton linked by interflavan-flaven and interflaven bonds, distinguishing them from proanthocyanidins and dehydrodicatechins. Detailed chemical and physical characterizations further confirmed the novel FFs as flavonoids. Mechanistic investigations demonstrated that FP polymerizes flavan-3-ols and flav-2-en-3-ol carbocation, forming dimeric or oligomeric flaven-4→8-flavans, which we term "papanridins." Data from transgenic experiments, mutant analysis, metabolic profiling, and phylogenetic analyses show that the biosynthesis of papanridins is prevalent in cacao, grape, blueberry, corn, rice, Arabidopsis, and other species in the plant kingdom. In summary, our study discoveries a group of novel oligomeric flavonoids, namely papanridins, and reveals that a novel FP-mediated polymerization mechanism for the biosynthesis of papanridins in plants.
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Affiliation(s)
- Yue Zhu
- Department of Plant and Microbial Biology, North Carolina State University, Raleigh, NC, USA
| | - Seyit Yuzuak
- Department of Plant and Microbial Biology, North Carolina State University, Raleigh, NC, USA; Department of Molecular Biology & Genetics, Mehmet Akif Ersoy University, Burdur, Turkey
| | - Xiaoyan Sun
- Department of Chemistry, North Carolina State University, Raleigh, NC, USA
| | - De-Yu Xie
- Department of Plant and Microbial Biology, North Carolina State University, Raleigh, NC, USA.
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Bindon K, Qi S, Kassara S, Nicolotti L, Jouin A, Beer M. Apple Pomace Compositional Data Highlighting the Proportional Contribution of Polymeric Procyanidins. Molecules 2023; 28:5494. [PMID: 37513366 PMCID: PMC10384618 DOI: 10.3390/molecules28145494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 06/23/2023] [Accepted: 07/11/2023] [Indexed: 07/30/2023] Open
Abstract
Recent years have seen an increase in research focusing on the amelioration of apple pomace waste for use in the food and nutraceutical industries. Much of this work has concentrated on the characterisation of the polyphenol composition of apple pomace materials to determine their role in conferring nutritional and health benefits. Although apples contain substantial quantities of polymeric procyanidins (condensed tannins), this class of compounds has received limited attention in apple research. This study quantified the polymeric procyanidins in apple pomace extracts using a rapid, methyl-cellulose precipitation (MCP) approach for the first time. In addition, a non-targeted metabolomics approach was applied to determine the most abundant phenolic classes present. Polymeric procyanidins were found to be the most abundant type of polyphenol in apple pomace extracts and were generally oligomeric in nature. Multivariate statistical analysis revealed that the ferric-reducing antioxidant power (FRAP) was most strongly correlated with the polymeric procyanidin concentration. Noting that polymeric procyanidins may not cross the cell layer to exert antioxidant activity in vivo, their presence in apple pomace extracts may therefore overestimate the FRAP. This work highlights the importance of polymeric procyanidins in the phenolic diversity of apple pomaces, and it is proposed that in future studies, rapid MCP assays may be used for their quantification.
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Affiliation(s)
- Keren Bindon
- The Australian Wine Research Institute, Waite Precinct, Hartley Grove cnr Paratoo Road, Glen Osmond, Adelaide, SA 5064, Australia
| | - Song Qi
- The Australian Wine Research Institute, Waite Precinct, Hartley Grove cnr Paratoo Road, Glen Osmond, Adelaide, SA 5064, Australia
| | - Stella Kassara
- The Australian Wine Research Institute, Waite Precinct, Hartley Grove cnr Paratoo Road, Glen Osmond, Adelaide, SA 5064, Australia
| | - Luca Nicolotti
- The Australian Wine Research Institute, Waite Precinct, Hartley Grove cnr Paratoo Road, Glen Osmond, Adelaide, SA 5064, Australia
- Metabolomics Australia (SA Node), Glen Osmond, Adelaide, SA 5064, Australia
| | - Alicia Jouin
- The Australian Wine Research Institute, Waite Precinct, Hartley Grove cnr Paratoo Road, Glen Osmond, Adelaide, SA 5064, Australia
- Institute of Vine and Wine Science, The University of Bordeaux, 210 Chemin de Leysotte, 33882 Villenave d'Ornon, France
| | - Maggie Beer
- The Maggie Beer Foundation, SAHMRI, Adelaide, SA 5001, Australia
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5
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Shi S, Wang K, Zhong R, Cassidy A, Rimm EB, Nimptsch K, Wu K, Chan AT, Giovannucci EL, Ogino S, Ng K, Meyerhardt JA, Song M. Flavonoid intake and survival after diagnosis of colorectal cancer: a prospective study in 2 US cohorts. Am J Clin Nutr 2023; 117:1121-1129. [PMID: 37011765 PMCID: PMC10447476 DOI: 10.1016/j.ajcnut.2023.03.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 03/27/2023] [Accepted: 03/28/2023] [Indexed: 04/03/2023] Open
Abstract
BACKGROUND Although experimental evidence supports anticancer effects of flavonoids, the influence of flavonoid intake on colorectal cancer (CRC) survival remains unknown. OBJECTIVES This study aimed to assess the association of postdiagnostic flavonoid intake with mortality. METHODS We prospectively assessed the association of postdiagnostic flavonoid intake with CRC-specific and all-cause mortality in 2552 patients diagnosed with stage I-III CRC in 2 cohort studies-the Nurses' Health Study and the Health Professionals Follow-up Study. We assessed the intake of total flavonoids and their subclasses using validated food frequency questionnaires. We used the inverse probability-weighted multivariable Cox proportional hazards regression model to calculate the hazard ratio (HR) of mortality after adjusting for prediagnostic flavonoid intake and other potential confounders. We performed spline analysis to evaluate dose-response relationships. RESULTS The mean [standard deviation (SD)] age of patients at diagnosis was 68.7 (9.4) y. During 31,026 person-y of follow-up, we documented 1689 deaths, of which 327 were due to CRC. The total flavonoid intake was not associated with mortality, but a higher intake of flavan-3-ols was suggestively associated with lower CRC-specific and all-cause mortality, with multivariable HR (95% CI) per 1-SD increases of 0.83 (0.69-0.99; P = 0.04) and 0.91 (0.84-0.99; P = 0.02), respectively. The spline analysis showed a linear relationship between postdiagnostic flavan-3-ol intake and CRC-specific mortality (P = 0.01 for linearity). As the major contributor to flavan-3-ol intake, tea showed an inverse association with CRC-specific and all-cause mortality, with multivariable HRs per 1 cup/d of tea of 0.86 (0.75-0.99; P = 0.03) and 0.90 (0.85-0.95; P < 0.001), respectively. No beneficial associations were found for other flavonoid subclasses. CONCLUSIONS Higher intake of flavan-3-ol after CRC diagnosis was associated with lower CRC-specific mortality. Small, readily achievable increases in the intake of flavan-3-ol-rich foods, such as tea, may help improve survival in patients with CRC.
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Affiliation(s)
- Shanshan Shi
- Department of Pathology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China; Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, United States
| | - Kai Wang
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, United States
| | - Rong Zhong
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, United States
| | - Aedín Cassidy
- Institute for Global Food Security, Queen's University Belfast, Belfast, United Kingdom
| | - Eric B Rimm
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, United States; Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA, United States; Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, United States
| | - Katharina Nimptsch
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA, United States
| | - Kana Wu
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA, United States
| | - Andrew T Chan
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, United States; Clinical and Translational Epidemiology Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States; Division of Gastroenterology, Massachusetts General Hospital, Boston, MA, United States; Broad Institute of MIT and Harvard, Cambridge, MA, United States
| | - Edward L Giovannucci
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, United States; Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA, United States
| | - Shuji Ogino
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, United States; Broad Institute of MIT and Harvard, Cambridge, MA, United States; Program in MPE Molecular Pathological Epidemiology, Department of Pathology, Brigham and Women's Hospital, and Harvard Medical School, Boston, MA, United States
| | - Kimmie Ng
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA, United States
| | - Jeffrey A Meyerhardt
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA, United States
| | - Mingyang Song
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, United States; Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA, United States; Clinical and Translational Epidemiology Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States; Division of Gastroenterology, Massachusetts General Hospital, Boston, MA, United States.
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6
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Chowdhury J, Ferdous J, Lihavainen J, Albrectsen BR, Lundberg-Felten J. Fluorogenic properties of 4-dimethylaminocinnamaldehyde (DMACA) enable high resolution imaging of cell-wall-bound proanthocyanidins in plant root tissues. Front Plant Sci 2023; 13:1060804. [PMID: 36726681 PMCID: PMC9884812 DOI: 10.3389/fpls.2022.1060804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Accepted: 12/27/2022] [Indexed: 06/18/2023]
Abstract
Proanthocyanidins (PAs) are polymeric phenolic compounds found in plants and used in many industrial applications. Despite strong evidence of herbivore and pathogen resistance-related properties of PAs, their in planta function is not fully understood. Determining the location and dynamics of PAs in plant tissues and cellular compartments is crucial to understand their mode of action. Such an approach requires microscopic localization with fluorescent dyes that specifically bind to PAs. Such dyes have hitherto been lacking. Here, we show that 4-dimethylaminocinnamaldehyde (DMACA) can be used as a PA-specific fluorescent dye that allows localization of PAs at high resolution in cell walls and inside cells using confocal microscopy, revealing features of previously unreported wall-bound PAs. We demonstrate several novel usages of DMACA as a fluorophore by taking advantage of its double staining compatibility with other fluorescent dyes. We illustrate the use of the dye alone and its co-localization with cell wall polymers in different Populus root tissues. The easy-to-use fluorescent staining method, together with its high photostability and compatibility with other fluorogenic dyes, makes DMACA a valuable tool for uncovering the biological function of PAs at a cellular level in plant tissues. DMACA can also be used in other plant tissues than roots, however care needs to be taken when tissues contain compounds that autofluoresce in the red spectral region which can be confounded with the PA-specific DMACA signal.
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Affiliation(s)
- Jamil Chowdhury
- Umeå Plant Science Center, Department of Plant Physiology, Umeå University, Umeå, Sweden
- Umeå Plant Science Center, Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, Umeå, Sweden
| | - Jannatul Ferdous
- Umeå Plant Science Center, Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, Umeå, Sweden
| | - Jenna Lihavainen
- Umeå Plant Science Center, Department of Plant Physiology, Umeå University, Umeå, Sweden
| | | | - Judith Lundberg-Felten
- Umeå Plant Science Center, Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, Umeå, Sweden
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Duan S, Wang XY, Feng X, Ma Y, Zheng Z, Ma CM. Identification and bioactivity evaluation of flavan-3-ols in the milk of dairy sheep fed Cynomorium songaricum. J Dairy Sci 2022; 105:4783-4790. [PMID: 35450713 DOI: 10.3168/jds.2021-21728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Accepted: 02/16/2022] [Indexed: 11/19/2022]
Abstract
Cynomorium songaricum is a traditional medicine and also a food material that is eaten raw or processed as tea or beverages. As a featured plant in semi-desert grasslands, C. songaricum is also eaten by the cattle and sheep in the area. This research study fed dairy sheep C. songaricum to determine the flavan-3-ols in sheep milk. Catechin (Cat), epicatechin (Epi), procyanidin A1 (A1), procyanidin A2 (A2), and procyanidin B1 (B1) were detected in sheep milk with the concentration being Epi > A2 > Cat > B1 > A1 at 24 h after the administration of C. songaricum. Neither A1 nor A2 were detected in the methanol extract of C. songaricum. Cysteine degradation of the plant revealed that in addition to Epi, A2 was the extending unit of the polymeric flavan-3-ols in C. songaricum, indicating that A2 is released digestively from the polymers and enters the milk. Procyanidin B-1 was converted to A1 on incubation in raw but not heated milk, indicating that the A1 in milk is the enzymatically transformed product of B1. Accelerated oxidation showed that the flavan-3-ols, B1, Cat, and Epi significantly protects the unsaturated triacyglycerols in the milk from oxidation. The flavan-3-ol could slow down the oxidation of glutathione and the latter may play an important role in preventing the milk triglycerides from oxidation. Flavan-3-ols are polyphenols with many health benefits. The present research revealed the antioxidant activities of flavan-3-ols that could be absorbed to sheep milk, adding new evidences for the values of these flavan-3-ols and for the milk.
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Affiliation(s)
- Shen Duan
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, PR China 010070; Key Laboratory of Herbage and Endemic Crop Biology of Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot, PR China 010070
| | - Xin-Yao Wang
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, PR China 010070; Key Laboratory of Herbage and Endemic Crop Biology of Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot, PR China 010070
| | - Xu Feng
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, PR China 010070; Key Laboratory of Herbage and Endemic Crop Biology of Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot, PR China 010070
| | - Yue Ma
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, PR China 010070; Key Laboratory of Herbage and Endemic Crop Biology of Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot, PR China 010070
| | - Zhong Zheng
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, PR China 010070
| | - Chao-Mei Ma
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, PR China 010070; Key Laboratory of Herbage and Endemic Crop Biology of Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot, PR China 010070.
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Vieux F, Maillot M, Rehm CD, Drewnowski A. Flavonoid Intakes in the US Diet Are Linked to Higher Socioeconomic Status and to Tea Consumption: Analyses of NHANES 2011-16 Data. J Nutr 2020; 150:2147-2155. [PMID: 32470977 DOI: 10.1093/jn/nxaa145] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 02/23/2020] [Accepted: 04/28/2020] [Indexed: 01/23/2023] Open
Abstract
BACKGROUND Many of the health benefits of tea have been attributed to its flavonoid content. Tea consumption in US adults varies by socioeconomic status (SES). OBJECTIVES The present objective was to explore intakes of total flavonoids and flavonoid subclasses by participant sociodemographics and by patterns of tea consumption. METHODS The present analyses were based on 2 d of dietary recalls for 17,506 persons aged >9 y in the 2011-2016 NHANES. The What We Eat in America nutrient composition database was merged with the USDA Expanded Flavonoid database, which included total flavonoids and flavan-3-ols (including catechins), flavanones, flavonols, anthocyanidins, flavones, and isoflavones. Flavonoid intakes were compared by sex, age, race/ethnicity, education, and income-to-poverty ratio (IPR) in univariate analyses. Flavonoid intakes of children and adults were also compared by tea consumption status. Time trends in flavonoid intakes were also examined. RESULTS Mean total flavonoid intake was 219 mg/d, of which flavan-3-ols provided 174 mg/d, or 79%. The highest total flavonoid intakes were found in adults aged 51-70 y (293 mg/d), non-Hispanic whites (251 mg/d) and in groups with college education (251 mg/d) and higher income (IPR >3.5: 249 mg/d) (P < 0.001 for all). The socioeconomic gradient was significant for anthocyanidins, flavonols, and flavones (P < 0.001 for all) but not for flavan-3-ols, and persisted across 3 cycles of NHANES. Adult tea consumers had higher intakes of total flavonoids (610 mg/d compared with 141 mg/d) and flavan-3-ols (542 mg/d compared with 97.8 mg/d) than did nonconsumers (P < 0.001). Time trend analyses showed that both tea consumption and flavonoid intakes were unchanged from 2011 to 2016. CONCLUSIONS Flavonoid intakes in children and adults in the NHANES 2011-16 sample were associated with higher SES and were largely determined by tea consumption. Studies of diet and disease risk need to take sociodemographic gradients and eating and drinking habits into account.
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Affiliation(s)
- Florent Vieux
- MS-Nutrition, Faculté de Médecine la Timone, Université Aix-Marseille, Marseille, France
| | - Matthieu Maillot
- MS-Nutrition, Faculté de Médecine la Timone, Université Aix-Marseille, Marseille, France
| | - Colin D Rehm
- Department of Epidemiology & Population Health, Albert Einstein College of Medicine, Montefiore Medical Center, New York, NY, USA
| | - Adam Drewnowski
- Center for Public Health Nutrition, University of Washington, Seattle, WA, USA
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9
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Symma N, Sendker J, Petereit F, Hensel A. Multistep Analysis of Diol-LC-ESI-HRMS Data Reveals Proanthocyanidin Composition of Complex Plant Extracts (PAComics). J Agric Food Chem 2020; 68:8040-8049. [PMID: 32633530 DOI: 10.1021/acs.jafc.0c02826] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Proanthocyanidins (PACs) are complex oligomeric or polymeric phenolic biopolymers composed of flavan-3-ol building blocks. PACs exert manifold functional bioactivities and are assessed as bioactive ingredients in a variety of food products, beverages, medicinal plants, and phytopharmaceuticals. Although analytical methods for PACs with low degree of polymerization (DP) are well established, a lack of methods for the detailed analysis of higher oligomers and polymers from complex plant extracts is obvious. For this, the present study investigated PAC-enriched extracts from four different plants, traditionally used for medical purpose (Lime flower, Hawthorn leaf and flower, Japanese Wisteria fruits without seeds, and Common Sorrel herb). PACs were separated on diol stationary-phase high-performance liquid chromatography according to the respective DP and detected by fluorescence and quadrupole time-of-flight mass spectrometry (qTOF-MS). The qTOF-MS contour plots [tR → m/z] provided a sufficient overview on the respective PAC distribution. Subsequently, high-resolution mass spectrometry data were used for Kendrick mass defect (KMD) analysis, with (epi)catechin, the main flavan-3-ol unit in PACs, as the reference unit. The resulting KMD plots enabled an elucidation of the general polymer chain composition with regard to DP, building blocks, and potential secondary modifications (e.g., galloylation). Subsequently, analysis of MS2 fragmentation patterns of PAC oligomers confirmed the structural features obtained from the KMD plots. While Lime flower contained oligomeric A- and B-type PACs, composed of (epi)catechin and (epi)afzelechin, Japanese Wisteria fruit contained PACs consisting of three different hydroxylated flavan-3-ols. Cinchonains, A-type PACs, and B-type PACs were detected in the Hawthorn plant material. Galloylated oligo- and polymeric PACs were detected in Common Sorrel herb. This multistep analysis reveals collective insights into the PAC composition of the extracts. The protocol offers a fast and reliable methodology to be used in a standard laboratory. On the other hand, this methodology reaches its limits for higher oligomeric PACs, and further optimization is necessary for a better detection of the polymers, as the optimal DP cluster detection depends on the resolution of diol stationary-phase chromatography and is therefore limited.
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Affiliation(s)
- Nico Symma
- Institute of Pharmaceutical Biology and Phytochemistry, University of Münster, Corrensstraße 48, D-48149 Münster, Germany
| | - Jandirk Sendker
- Institute of Pharmaceutical Biology and Phytochemistry, University of Münster, Corrensstraße 48, D-48149 Münster, Germany
| | - Frank Petereit
- Institute of Pharmaceutical Biology and Phytochemistry, University of Münster, Corrensstraße 48, D-48149 Münster, Germany
| | - Andreas Hensel
- Institute of Pharmaceutical Biology and Phytochemistry, University of Münster, Corrensstraße 48, D-48149 Münster, Germany
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10
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Toronjo-Urquiza L, Acosta-Martin AE, James DC, Nagy T, Falconer RJ. The use of catechins in Chinese hamster ovary cell media for the improvement of monoclonal antibody yields and a reduction of acidic species. Biotechnol Prog 2020; 36:e2980. [PMID: 32067358 DOI: 10.1002/btpr.2980] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 02/06/2020] [Accepted: 02/12/2020] [Indexed: 12/14/2022]
Abstract
Catechin compounds have potential benefits for recombinant monoclonal antibody (Mab) production as chemical additives in cell culture media. In this study, four catechin compounds catechin (Cat), epicatechin (EC), gallocatechin-gallate (GCG), and epigallocatechin-gallate (EGCG) were added to cell culture media (at 50 μM) and their effects on the recombinant Chinese hamster ovary (CHO) cell culture, specific productivity, and Mab quality were assessed. The results indicate that the improvement of specific productivity was linked to cell growth inhibition. All catechins caused cell phase growth arrest by lowering the number of cells in the G1/G0 phase and increasing the cells in the S and G2/M phases. Late addition of the catechin resulted in a significantly higher final IgG concentration. Cat and EC caused an improvement in the final antibody titer of 1.5 ± 0.1 and 1.3 ± 0.1 fold, respectively. Catechins with a galloyl group (GCG and EGCG) arrested cell growth and reduced cell specific productivity at the concentrations tested. The Cat-treated IgG was found to have reduced acidic species with a corresponding increase in the main peak.
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Affiliation(s)
- Luis Toronjo-Urquiza
- Department of Chemical & Biological Engineering, ChELSI Institute, University of Sheffield, Sheffield, UK
| | - Adelina E Acosta-Martin
- biOMICS Facility, Faculty of Science Mass Spectrometry Centre, University of Sheffield, Sheffield, UK
| | - David C James
- Department of Chemical & Biological Engineering, ChELSI Institute, University of Sheffield, Sheffield, UK
| | - Tibor Nagy
- Bioprocess Strategy and Development, Fujifilm Diosynth Biotechnologies, Stockton-on-Tees, UK
| | - Robert J Falconer
- Department of Chemical Engineering and Advanced Materials, University of Adelaide, South Australia, Australia
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11
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González-Quilen C, Rodríguez-Gallego E, Beltrán-Debón R, Pinent M, Ardévol A, Blay MT, Terra X. Health-Promoting Properties of Proanthocyanidins for Intestinal Dysfunction. Nutrients 2020; 12:E130. [PMID: 31906505 PMCID: PMC7019584 DOI: 10.3390/nu12010130] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 12/20/2019] [Accepted: 12/31/2019] [Indexed: 12/22/2022] Open
Abstract
The intestinal barrier is constantly exposed to potentially harmful environmental factors, including food components and bacterial endotoxins. When intestinal barrier function and immune homeostasis are compromised (intestinal dysfunction), inflammatory conditions may develop and impact overall health. Evidence from experimental animal and cell culture studies suggests that exposure of intestinal mucosa to proanthocyanidin (PAC)-rich plant products, such as grape seeds, may contribute to maintaining the barrier function and to ameliorating the pathological inflammation present in diet-induced obesity and inflammatory bowel disease. In this review, we aim to update the current knowledge on the bioactivity of PACs in experimental models of intestinal dysfunction and in humans, and to provide insights into the underlying biochemical and molecular mechanisms.
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Affiliation(s)
| | | | | | | | | | - M Teresa Blay
- MoBioFood Research Group, Departament de Bioquímica i Biotecnologia, Universitat Rovira i Virgili, 43007 Tarragona, Spain; (C.G.-Q.); (E.R.-G.); (R.B.-D.); (M.P.); (A.A.); (X.T.)
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12
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Racine KC, Wiersema BD, Griffin LE, Essenmacher LA, Lee AH, Hopfer H, Lambert JD, Stewart AC, Neilson AP. Flavanol Polymerization Is a Superior Predictor of α-Glucosidase Inhibitory Activity Compared to Flavanol or Total Polyphenol Concentrations in Cocoas Prepared by Variations in Controlled Fermentation and Roasting of the Same Raw Cocoa Beans. Antioxidants (Basel) 2019; 8:antiox8120635. [PMID: 31835748 PMCID: PMC6943598 DOI: 10.3390/antiox8120635] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 12/06/2019] [Accepted: 12/08/2019] [Indexed: 02/06/2023] Open
Abstract
Raw cocoa beans were processed to produce cocoa powders with different combinations of fermentation (unfermented, cool, or hot) and roasting (not roasted, cool, or hot). Cocoa powder extracts were characterized and assessed for α-glucosidase inhibitory activity in vitro. Cocoa processing (fermentation/roasting) contributed to significant losses of native flavanols. All of the treatments dose-dependently inhibited α-glucosidase activity, with cool fermented/cool roasted powder exhibiting the greatest potency (IC50: 68.09 µg/mL), when compared to acarbose (IC50: 133.22 µg/mL). A strong negative correlation was observed between flavanol mDP and IC50, suggesting flavanol polymerization as a marker of enhanced α-glucosidase inhibition in cocoa. Our data demonstrate that cocoa powders are potent inhibitors of α-glucosidase. Significant reductions in the total polyphenol and flavanol concentrations induced by processing do not necessarily dictate a reduced capacity for α-glucosidase inhibition, but rather these steps can enhance cocoa bioactivity. Non-traditional compositional markers may be better predictors of enzyme inhibitory activity than cocoa native flavanols.
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Affiliation(s)
- Kathryn C. Racine
- Department of Food Science and Technology, Virginia Polytechnic Institute and State University, Blacksburg, VA 24060, USA; (K.C.R.) (B.D.W.); (L.A.E.); (A.H.L.); (A.C.S.)
| | - Brian D. Wiersema
- Department of Food Science and Technology, Virginia Polytechnic Institute and State University, Blacksburg, VA 24060, USA; (K.C.R.) (B.D.W.); (L.A.E.); (A.H.L.); (A.C.S.)
| | - Laura E. Griffin
- Plants for Human Health Institute, Department of Food, Bioprocessing and Nutrition Sciences, North Carolina State University, Kannapolis, NC 28081, USA or
| | - Lauren A. Essenmacher
- Department of Food Science and Technology, Virginia Polytechnic Institute and State University, Blacksburg, VA 24060, USA; (K.C.R.) (B.D.W.); (L.A.E.); (A.H.L.); (A.C.S.)
| | - Andrew H. Lee
- Department of Food Science and Technology, Virginia Polytechnic Institute and State University, Blacksburg, VA 24060, USA; (K.C.R.) (B.D.W.); (L.A.E.); (A.H.L.); (A.C.S.)
| | - Helene Hopfer
- Department of Food Science, Pennsylvania State University, University Park, PA 16801, USA; (H.H.); (J.D.L.)
| | - Joshua D. Lambert
- Department of Food Science, Pennsylvania State University, University Park, PA 16801, USA; (H.H.); (J.D.L.)
| | - Amanda C. Stewart
- Department of Food Science and Technology, Virginia Polytechnic Institute and State University, Blacksburg, VA 24060, USA; (K.C.R.) (B.D.W.); (L.A.E.); (A.H.L.); (A.C.S.)
| | - Andrew P. Neilson
- Plants for Human Health Institute, Department of Food, Bioprocessing and Nutrition Sciences, North Carolina State University, Kannapolis, NC 28081, USA or
- Correspondence: ; Tel.: +1-704-250-5495; Fax: +1-704-250-5409
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13
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Gouot JC, Smith JP, Holzapfel BP, Barril C. Grape Berry Flavonoid Responses to High Bunch Temperatures Post Véraison: Effect of Intensity and Duration of Exposure. Molecules 2019; 24:molecules24234341. [PMID: 31783632 PMCID: PMC6930521 DOI: 10.3390/molecules24234341] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Revised: 11/22/2019] [Accepted: 11/25/2019] [Indexed: 11/16/2022] Open
Abstract
Climate models predict an increase in the frequency and duration of heatwaves with an increase in intensity already strongly evident worldwide. The aim of this work was to evaluate the effect of two heatwave-related parameters (intensity and duration) during berry ripening and identify a threshold for berry survival and flavonoid accumulation. A Doehlert experimental design was used to test three temperature intensities (maxima of 35, 46, and 54 °C) and five durations (3 to 39 h), with treatments applied at the bunch level shortly after véraison. Berry skin and seeds were analysed by liquid chromatography-triple quadrupole-mass spectrometry (LC-QqQ-MS) for flavonoids (flavonols, anthocyanins, free flavan-3-ols, and tannins). Berries exposed to 46 °C showed little difference compared to 35 °C. However, berries reaching temperatures around 54 °C were completely desiccated, and all flavonoids were significantly decreased except for skin flavonols on a per berry basis and seed tannins in most cases. Some compounds, such as dihydroxylated flavonoids and galloylated flavan-3-ols (free and polymerised), were in higher proportion in damaged berries suggesting they were less degraded or more synthesised upon heating. Overall, irreversible berry damages and substantial compositional changes were observed and the berry survival threshold was estimated at around 50-53 °C for mid-ripe Shiraz berries, regardless of the duration of exposure.
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Affiliation(s)
- Julia C. Gouot
- National Wine and Grape Industry Centre, Wagga Wagga, NSW 2678, Australia; (J.P.S.); (B.P.H.); (C.B.)
- School of Agricultural and Wine Sciences, Charles Sturt University, Wagga Wagga, NSW 2678, Australia
- Correspondence: ; Tel.: +61-(0)2-6933-4082
| | - Jason P. Smith
- National Wine and Grape Industry Centre, Wagga Wagga, NSW 2678, Australia; (J.P.S.); (B.P.H.); (C.B.)
- Charles Sturt University, Leeds Parade, Orange, NSW 2800, Australia
| | - Bruno P. Holzapfel
- National Wine and Grape Industry Centre, Wagga Wagga, NSW 2678, Australia; (J.P.S.); (B.P.H.); (C.B.)
- New South Wales Department of Primary Industries, Wagga Wagga, NSW 2650, Australia
| | - Celia Barril
- National Wine and Grape Industry Centre, Wagga Wagga, NSW 2678, Australia; (J.P.S.); (B.P.H.); (C.B.)
- School of Agricultural and Wine Sciences, Charles Sturt University, Wagga Wagga, NSW 2678, Australia
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14
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Pérez-Navarro J, Cazals G, Enjalbal C, Izquierdo-Cañas PM, Gómez-Alonso S, Saucier C. Flavanol Glycoside Content of Grape Seeds and Skins of Vitis vinifera Varieties Grown in Castilla-La Mancha, Spain. Molecules 2019; 24:molecules24214001. [PMID: 31694238 PMCID: PMC6864760 DOI: 10.3390/molecules24214001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 10/29/2019] [Accepted: 10/31/2019] [Indexed: 01/06/2023] Open
Abstract
Glycosylated flavanols (monoglycosides and diglycosides) in skin and seed extracts of Vitis vinifera grapes grown in Castilla-La Mancha (Spain) were investigated using ultra-high-performance liquid chromatography—tandem mass spectrometry (UHPLC-ESI-QQQ-MS/MS). Six grape varieties (Airén, Tempranillo, the recently identified Albillo Dorado, Montonera del Casar, Moribel, and Tinto Fragoso) were studied over two consecutive years (2016 and 2017). A total of twenty monomeric flavanol monoglycosides, four diglycosylated monomers, and three dimeric flavanol monoglycosides were detected in all grape samples. The diversity observed in the composition of glycosylated flavanol in the grape berries suggests a strong influence of variety and grape tissue (skin or seed). Monomeric flavanol glycosides were more abundant in grape seed extracts, in contrast with monoglycosylated dimeric forms. In addition, the glycosylated flavanol content was related to berry color in grape skins, with higher concentrations measured in black grape varieties.
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Affiliation(s)
- José Pérez-Navarro
- IRICA, Univ. Castilla-La Mancha, 13071 Ciudad Real, Spain; (J.P.-N.); (S.G.-A.)
| | - Guillaume Cazals
- IBMM, Univ Montpellier, CNRS, ENSCM, 34000 Montpellier, France; (G.C.); (C.E.)
| | - Christine Enjalbal
- IBMM, Univ Montpellier, CNRS, ENSCM, 34000 Montpellier, France; (G.C.); (C.E.)
| | | | - Sergio Gómez-Alonso
- IRICA, Univ. Castilla-La Mancha, 13071 Ciudad Real, Spain; (J.P.-N.); (S.G.-A.)
| | - Cédric Saucier
- SPO, Univ Montpellier, INRA, Montpellier Supagro, 34000 Montpellier, France
- Correspondence:
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15
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Angelino D, Carregosa D, Domenech-Coca C, Savi M, Figueira I, Brindani N, Jang S, Lakshman S, Molokin A, Urban JF Jr, Davis CD, Brito MA, Kim KS, Brighenti F, Curti C, Bladé C, Del Bas JM, Stilli D, Solano-Aguilar GI, Santos CND, Del Rio D, Mena P. 5-(Hydroxyphenyl)-γ-Valerolactone-Sulfate, a Key Microbial Metabolite of Flavan-3-ols, Is Able to Reach the Brain: Evidence from Different in Silico, In Vitro and In Vivo Experimental Models. Nutrients 2019; 11:E2678. [PMID: 31694297 DOI: 10.3390/nu11112678] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 10/23/2019] [Accepted: 10/24/2019] [Indexed: 12/12/2022] Open
Abstract
Phenolic compounds have been recognized as promising compounds for the prevention of chronic diseases, including neurodegenerative ones. However, phenolics like flavan-3-ols (F3O) are poorly absorbed along the gastrointestinal tract and structurally rearranged by gut microbiota, yielding smaller and more polar metabolites like phenyl-γ-valerolactones, phenylvaleric acids and their conjugates. The present work investigated the ability of F3O-derived metabolites to cross the blood-brain barrier (BBB), by linking five experimental models with increasing realism. First, an in silico study examined the physical-chemical characteristics of F3O metabolites to predict those most likely to cross the BBB. Some of these metabolites were then tested at physiological concentrations to cross the luminal and abluminal membranes of brain microvascular endothelial cells, cultured in vitro. Finally, three different in vivo studies in rats injected with pure 5-(3',4'-dihydroxyphenyl)-γ-valerolactone, and rats and pigs fed grapes or a F3O-rich cocoa extract, respectively, confirmed the presence of 5-(hydroxyphenyl)-γ-valerolactone-sulfate (3',4' isomer) in the brain. This work highlighted, with different experimental models, the BBB permeability of one of the main F3O-derived metabolites. It may support the neuroprotective effects of phenolic-rich foods in the frame of the "gut-brain axis".
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16
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Toronjo Urquiza L, James DC, Nagy T, Falconer RJ. Screening Naturally Occurring Phenolic Antioxidants for Their Suitability as Additives to CHO Cell Culture Media Used to Produce Monoclonal Antibodies. Antioxidants (Basel) 2019; 8:antiox8060159. [PMID: 31163664 PMCID: PMC6617030 DOI: 10.3390/antiox8060159] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 05/27/2019] [Accepted: 05/30/2019] [Indexed: 12/15/2022] Open
Abstract
This study identified several antioxidants that could be used in Chinese hamster ovary (CHO)cell culture media and benefit monoclonal antibody production. The flavan-3-ols, catechin, epicatechin, epigallocatechin gallate and gallocatechin gallate all had no detrimental effect on cell viability at the concentrations tested, and they reduced the final viable cell count with a resulting rise in the cell specific productivity. The flavone, luteolin behave similarly to the flavan-3-ols. Resveratrol at 50 μM concentration resulted in the most pronounced reduction in viable cell density with minimal decrease in IgG synthesis and the largest increase in cell specific productivity. Low concentrations of α-tocopherol (35 μM) reduced viable cell density and raised cell specific productivity, but at higher concentration it had little additional effect. As high concentrations of α-tocopherol are not toxic to CHO cells, its addition as an anti-oxidant has great potential. Kaempferol up to 50 μM, curcumin up to 20 μM and piceid up to 100 μM showed little effect on growth or IgG synthesis and could be useful as antioxidants. Caffeic acid phenethyl ester was toxic to CHO cell and of no interest. Seven of the phenolic compounds tested are potential cell cycle inhibitors as well as having intrinsic antioxidant properties.
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Affiliation(s)
- Luis Toronjo Urquiza
- Department of Chemical & Biological Engineering, ChELSI Institute, University of Sheffield, Sheffield S1 3JD, UK.
| | - David C James
- Department of Chemical & Biological Engineering, ChELSI Institute, University of Sheffield, Sheffield S1 3JD, UK.
| | - Tibor Nagy
- Fujifilm Diosynth Biotechnologies, Belasis Ave, Stockton-on-Tees, Billingham TS23 1LH, UK.
| | - Robert J Falconer
- Department of Chemical Engineering, University of Adelaide, Adelaide, SA 5005, Australia.
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17
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González-Quilen C, Gil-Cardoso K, Ginés I, Beltrán-Debón R, Pinent M, Ardévol A, Terra X, Blay MT. Grape-Seed Proanthocyanidins are Able to Reverse Intestinal Dysfunction and Metabolic Endotoxemia Induced by a Cafeteria Diet in Wistar Rats. Nutrients 2019; 11:nu11050979. [PMID: 31035432 PMCID: PMC6567002 DOI: 10.3390/nu11050979] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 04/12/2019] [Accepted: 04/26/2019] [Indexed: 02/06/2023] Open
Abstract
We evaluated the effectiveness of pharmacological doses of grape-seed proanthocyanidin extract (GSPE) in reversing intestinal barrier alterations and local inflammation in female Wistar rats fed a long-term obesogenic diet. Animals were fed a 17-week cafeteria diet (CAF diet), supplemented with daily GSPE doses (100 or 500 mg kg−1 body weight) during the final two weeks. CAF diet enhanced the intestinal permeation of an orally administered marker (ovalbumin, OVA) and increased the plasma levels of tumor necrosis factor-α (TNF-α) and lipopolysaccharides (LPS) in 2–3-fold. Ex vivo Ussing chamber assays showed a 55–70% reduction in transepithelial electrical resistance (TEER) and increased the TNF-α secretions in both small and large intestinal sections with a 25-fold increment in the ileum. Ileal tissues also presented a 4-fold increase of myeloperoxidase (MPO) activity. Both GSPE-treatments were able to restitute TEER values in the ileum and colon and to reduce plasma LPS to basal levels without a dose-dependent effect. However, effects on the OVA permeation and TNF-α secretion were dose and section-specific. GSPE also reduced ileal MPO activity and upregulated claudin 1 gene expression. This study provides evidence of the efficacy of GSPE-supplementation ameliorating diet-induced intestinal dysfunction and metabolic endotoxemia when administered at the end of a long-term obesogenic diet.
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Affiliation(s)
- Carlos González-Quilen
- MoBioFood Research Group, Departament de Bioquímica i Biotecnologia, Universitat Rovira i Virgili, 43007 Tarragona, Spain.
| | - Katherine Gil-Cardoso
- MoBioFood Research Group, Departament de Bioquímica i Biotecnologia, Universitat Rovira i Virgili, 43007 Tarragona, Spain.
| | - Iris Ginés
- MoBioFood Research Group, Departament de Bioquímica i Biotecnologia, Universitat Rovira i Virgili, 43007 Tarragona, Spain.
| | - Raúl Beltrán-Debón
- MoBioFood Research Group, Departament de Bioquímica i Biotecnologia, Universitat Rovira i Virgili, 43007 Tarragona, Spain.
| | - Montserrat Pinent
- MoBioFood Research Group, Departament de Bioquímica i Biotecnologia, Universitat Rovira i Virgili, 43007 Tarragona, Spain.
| | - Anna Ardévol
- MoBioFood Research Group, Departament de Bioquímica i Biotecnologia, Universitat Rovira i Virgili, 43007 Tarragona, Spain.
| | - Ximena Terra
- MoBioFood Research Group, Departament de Bioquímica i Biotecnologia, Universitat Rovira i Virgili, 43007 Tarragona, Spain.
| | - M Teresa Blay
- MoBioFood Research Group, Departament de Bioquímica i Biotecnologia, Universitat Rovira i Virgili, 43007 Tarragona, Spain.
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18
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Febrianto NA, Zhu F. Intravariety Diversity of Bioactive Compounds in Trinitario Cocoa Beans with Different Degrees of Fermentation. J Agric Food Chem 2019; 67:3150-3158. [PMID: 30794392 DOI: 10.1021/acs.jafc.8b06418] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
There has been increasing interest in the bioactive components of cocoa beans as they are related to the nutritional and sensory quality of cocoa products. Sulawesi 1 (Sul 1) cocoa beans (Trinitario variety) with different degrees of fermentation were collected from Indonesia. Quantification of bioactive compounds in these beans was done to better understand its intravariety diversity in the composition of bioactive components. Epicatechin, proanthocyanidin (PA) dimer, PA trimer, PA tetramer, and cyanidin glycosides were the major phenolics in Sul 1 cocoa beans. There was wide variation in the concentrations of bioactive compounds among the beans. These cocoa beans can be categorized into 4 distinct groups based on the profiles of flavan-3-ol derivatives, phenolic acids, flavonols, and anthocyanins. The fermentation index of cocoa beans could not be directly related to the polyphenol profile. This study provides insights into farm management using Sul 1 as planting material for quality improvement of cocoa-based products with targeted bioactive composition.
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Affiliation(s)
- Noor Ariefandie Febrianto
- School of Chemical Sciences , University of Auckland , Private Bag 92019, Auckland 1142 , New Zealand
- Indonesian Coffee and Cocoa Research Institute (ICCRI) , Jl. PB Sudirman No. 90 , Jember 68118 , East Java , Indonesia
| | - Fan Zhu
- School of Chemical Sciences , University of Auckland , Private Bag 92019, Auckland 1142 , New Zealand
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19
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Zerbib M, Cazals G, Ducasse MA, Enjalbal C, Saucier C. Evolution of Flavanol Glycosides during Red Grape Fermentation. Molecules 2018; 23:molecules23123300. [PMID: 30545151 PMCID: PMC6321447 DOI: 10.3390/molecules23123300] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 12/04/2018] [Accepted: 12/07/2018] [Indexed: 12/23/2022] Open
Abstract
Monomeric and dimeric flavanol glycosides were quantified by UHPLC-MRM in Syrah (SYR) and Grenache (GRE) grapes and in their corresponding wines for the first time. Quantities were extremely variable depending on grape tissue (seeds or skins) and during fermentation. Overall, 22 monomeric and dimeric mono- and diglycosides were determined with concentrations ranging from 0.7 nanograms to 0.700 micrograms per gram of grape tissue, and 0 to 60 micrograms per liter for wines. The evolution of the glycosides' composition during winemaking suggests that almost all these compounds originate in the grapes themselves and display different extraction kinetics during winemaking. One isomer of the monomeric (epi) flavanol monoglycosides seemed to be biosynthesized by yeasts during wine fermentation. The sharp decrease in concentration of some isomers at the late stages of fermentation or after pressing suggests that some grape glycosidase activities convert these compounds into non-glycosylated flavanols.
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Affiliation(s)
- Marie Zerbib
- SPO, Univ Montpellier, INRA, Montpellier Supagro, 34000 Montpellier, France.
| | | | - Marie-Agnès Ducasse
- UMT Minicave, Institut Français de la Vigne et du Vin, 11430 Gruissan, France.
| | | | - Cédric Saucier
- SPO, Univ Montpellier, INRA, Montpellier Supagro, 34000 Montpellier, France.
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20
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Zerbib M, Cazals G, Enjalbal C, Saucier C. Identification and Quantification of Flavanol Glycosides in Vitis vinifera Grape Seeds and Skins during Ripening. Molecules 2018; 23:E2745. [PMID: 30355957 DOI: 10.3390/molecules23112745] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Revised: 10/12/2018] [Accepted: 10/19/2018] [Indexed: 01/18/2023] Open
Abstract
Monomeric and dimeric flavanol glycosides were analyzed in Vitis vinifera grapes and seeds during ripening. An analytical method using ultra-high performance liquid chromatography coupled with a triple quadrupole mass spectrometry (UHPLC-ESI-QQQ-MS/MS) in multiple reaction monitoring (MRM) mode was employed. Three grape varieties (Merlot, Syrah and Tannat) were chosen and grape berries were sampled at different stages of development. Ten monoglycosylated and six diglycosylated flavanol monomers were detected. Twelve monoglycosylated and three diglycosylated flavanol dimers were also detected for all three grape varieties. All diglycosides were detected for the first time in Vitis vinifera grapes, though some of these compounds were only detected in skins or seeds. Furthermore, the evolution of all these compounds was studied, and a decrease in monomeric (epi) catechin monoglycosides was observed during ripening for Tannat, Merlot and Syrah grape skins. The dimers would appear to accumulate in skin tissues up to mid-summer (after veraison) and decrease when grape berries reached maturity.
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21
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Dai W, Tan J, Lu M, Zhu Y, Li P, Peng Q, Guo L, Zhang Y, Xie D, Hu Z, Lin Z. Metabolomics Investigation Reveals That 8-C N-Ethyl-2-pyrrolidinone-Substituted Flavan-3-ols Are Potential Marker Compounds of Stored White Teas. J Agric Food Chem 2018; 66:7209-7218. [PMID: 29921123 DOI: 10.1021/acs.jafc.8b02038] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
White teas of different stored ages have varied flavor, bioactivity, and commercial value. In this study, a liquid chromatography-mass spectrometry-based metabolomics investigation revealed that there are distinct differences among the compound patterns of Baihaoyinzhen (BHYZ) and Baimudan (BMD) white teas with various storage durations. The levels of flavan-3-ols, procyanidins, theasinensins, theaflavins, flavonol- O-glycosides, flavone- C-glycosides, and most of the amino acids were reduced after long-term (>4 years) storage. More importantly, 8-C N-ethyl-2-pyrrolidinone-substituted flavan-3-ols (EPSFs), including seven novel compounds discovered in white teas for the first time, were formed from theanine and flavan-3-ols during storage, and their contents were positively correlated with the storage duration. These findings were further confirmed by the linearly increasing formation of EPSFs in reaction solution and BMD white teas stored in an environment-controlled cabinet. In conclusion, EPSFs were detected in white teas for the first time and were discovered as marker compounds and potential indicators for long-term storage of white tea.
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Affiliation(s)
- Weidong Dai
- Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture, Tea Research Institute , Chinese Academy of Agricultural Sciences , 9 Meiling South Road , Hangzhou , Zhejiang 310008 , People's Republic of China
| | - Junfeng Tan
- Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture, Tea Research Institute , Chinese Academy of Agricultural Sciences , 9 Meiling South Road , Hangzhou , Zhejiang 310008 , People's Republic of China
| | - Meiling Lu
- Agilent Technologies (China), Limited , 3 Wangjing North Road , Chaoyang, Beijing 100102 , People's Republic of China
| | - Yin Zhu
- Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture, Tea Research Institute , Chinese Academy of Agricultural Sciences , 9 Meiling South Road , Hangzhou , Zhejiang 310008 , People's Republic of China
| | - Pengliang Li
- Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture, Tea Research Institute , Chinese Academy of Agricultural Sciences , 9 Meiling South Road , Hangzhou , Zhejiang 310008 , People's Republic of China
| | - Qunhua Peng
- Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture, Tea Research Institute , Chinese Academy of Agricultural Sciences , 9 Meiling South Road , Hangzhou , Zhejiang 310008 , People's Republic of China
| | - Li Guo
- Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture, Tea Research Institute , Chinese Academy of Agricultural Sciences , 9 Meiling South Road , Hangzhou , Zhejiang 310008 , People's Republic of China
| | - Yue Zhang
- Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture, Tea Research Institute , Chinese Academy of Agricultural Sciences , 9 Meiling South Road , Hangzhou , Zhejiang 310008 , People's Republic of China
| | - Dongchao Xie
- Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture, Tea Research Institute , Chinese Academy of Agricultural Sciences , 9 Meiling South Road , Hangzhou , Zhejiang 310008 , People's Republic of China
| | - Zhengyan Hu
- Zhejiang Provincial Center for Disease Control and Prevention , 3399 Binsheng Road , Hangzhou , Zhejiang 310051 , People's Republic of China
| | - Zhi Lin
- Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture, Tea Research Institute , Chinese Academy of Agricultural Sciences , 9 Meiling South Road , Hangzhou , Zhejiang 310008 , People's Republic of China
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22
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Gao C, Cunningham DG, Liu H, Khoo C, Gu L. Development of a Thiolysis HPLC Method for the Analysis of Procyanidins in Cranberry Products. J Agric Food Chem 2018; 66:2159-2167. [PMID: 29430926 DOI: 10.1021/acs.jafc.7b04625] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The objective of this study was to develop a thiolysis HPLC method to quantify total procyanidins, the ratio of A-type linkages, and A-type procyanidin equivalents in cranberry products. Cysteamine was utilized as a low-odor substitute of toluene-α-thiol for thiolysis depolymerization. A reaction temperature of 70 °C and reaction time of 20 min, in 0.3 M of HCl, were determined to be optimum depolymerization conditions. Thiolytic products of cranberry procyanidins were separated by RP-HPLC and identified using high-resolution mass spectrometry. Standards curves of good linearity were obtained on thiolyzed procyanidin dimer A2 and B2 external standards. The detection and quantification limits, recovery, and precision of this method were validated. The new method was applied to quantitate total procyanidins, average degree of polymerization, ratio of A-type linkages, and A-type procyanidin equivalents in cranberry products. Results showed that the method was suitable for quantitative and qualitative analysis of procyanidins in cranberry products.
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Affiliation(s)
- Chi Gao
- Food Science and Human Nutrition Department, Institute of Food and Agricultural Sciences , University of Florida , Gainesville , Florida 32611 , United States
| | - David G Cunningham
- Ocean Spray Cranberries, Inc. , Lakeville-Middleboro , Massachusetts 02349 , United States
| | - Haiyan Liu
- Ocean Spray Cranberries, Inc. , Lakeville-Middleboro , Massachusetts 02349 , United States
| | - Christina Khoo
- Ocean Spray Cranberries, Inc. , Lakeville-Middleboro , Massachusetts 02349 , United States
| | - Liwei Gu
- Food Science and Human Nutrition Department, Institute of Food and Agricultural Sciences , University of Florida , Gainesville , Florida 32611 , United States
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De Taeye C, Bodart M, Caullet G, Collin S. Roasting conditions for preserving cocoa flavan-3-ol monomers and oligomers: interesting behaviour of Criollo clones. J Sci Food Agric 2017; 97:4001-4008. [PMID: 28194790 DOI: 10.1002/jsfa.8265] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Revised: 01/18/2017] [Accepted: 02/06/2017] [Indexed: 06/06/2023]
Abstract
BACKGROUND Cocoa bean roasting is important for creating the typical chocolate aroma through Maillard reactions, but it is also a key step deleterious to the polyphenol content and profile. RESULTS Compared with usual roasting at 150 °C, keeping the beans for 30 min at 120 °C or for 1 h at 90 °C proved much better for preventing strong degradation of native P1, P2 and P3 flavan-3-ols in cocoa (shown for Forastero, Trinitatio and Criollo cultivars). Surprisingly, Cuban, Mexican and Malagasy white-seeded beans behaved atypically when roasted for 30 min at 150 °C, releasing a pool of catechin. Enantiomeric chromatographic separation proved that this pool contained mainly (-)-catechin issued from (-)-epicatechin by epimerisation. As the (-)-epicatechin content remained relatively constant through Criollo bean roasting, flavan-3-ol monomers must have been regenerated from oligomers. This emergence of (-)-catechin in Criollo beans only, reported here for the first time, could be due to increased flavan-3-ol monomer stability in the absence of anthocyanidin-derived products. CONCLUSION The degradation rate of flavan-3-ols through roasting is higher in cocoa beans containing anthocyani(di)ns. The liberation of a pool of (-)-catechin when submitted to roasting at 150 °C allows to distinguish white-seeded cultivars. © 2017 Society of Chemical Industry.
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Affiliation(s)
- Cédric De Taeye
- Unité de Brasserie et des Industries Alimentaires, Earth and Life Institute, ELIM, Faculté des Bioingénieurs, Université Catholique de Louvain, Louvain-la-Neuve, Belgium
| | - Marie Bodart
- Unité de Brasserie et des Industries Alimentaires, Earth and Life Institute, ELIM, Faculté des Bioingénieurs, Université Catholique de Louvain, Louvain-la-Neuve, Belgium
| | - Gilles Caullet
- Unité de Brasserie et des Industries Alimentaires, Earth and Life Institute, ELIM, Faculté des Bioingénieurs, Université Catholique de Louvain, Louvain-la-Neuve, Belgium
| | - Sonia Collin
- Unité de Brasserie et des Industries Alimentaires, Earth and Life Institute, ELIM, Faculté des Bioingénieurs, Université Catholique de Louvain, Louvain-la-Neuve, Belgium
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24
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Wong KC, Cao S, Dong X, Law MC, Chan TH, Wong MS. (-)-Epiafzelechin Protects against Ovariectomy-induced Bone Loss in Adult Mice and Modulate Osteoblastic and Osteoclastic Functions In Vitro. Nutrients 2017; 9:nu9050530. [PMID: 28531166 PMCID: PMC5452259 DOI: 10.3390/nu9050530] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Revised: 05/08/2017] [Accepted: 05/11/2017] [Indexed: 01/01/2023] Open
Abstract
The present study was designed to characterize the bone protective effects of (-)-epiafzelechin (EAF), a flavan-3-ol, in mature ovariectomized mice model and its ability to stimulate osteoblastic activity and inhibit osteoclastic activity. Mature C57BL/6 mice (three to four months old) were either ovariectomised (OVX) or sham-operated and subjected to treatment (vehicle, 17β-oestradiol (E2, 200 μg/kg/day) or EAF (500 μg/kg/day) orally for six weeks. EAF and E2 significantly reduced urinary calcium (Ca) excretion, serum osteocalcin (OCN), and urinary deoxy-pyridinoline (DPD); increased bone mineral density (BMD); and improved micro-architectural properties in OVX mice. EAF significantly increased cell viability, alkaline phosphatise (ALP) activity, and collagen content, as well as runt-related transcriptional factor 2 (Runx2) mRNA expression in murine osteoblastic MC3T3-E1 cells. In addition, EAF significantly reduced the viability of osteoclast precursor murine leukemia monocyte RAW 264.7 cells and tartrate-resistant acid phosphatase (TRAP) activities in mature osteoclastic RAW 264.7 cells. EAF is a bioactive flavan-3-ol that protects estrogen deficiency-induced bone loss in OVX mice and exerts direct modulating effects in bone cells in vitro.
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Affiliation(s)
- Ka-Chun Wong
- State Key Laboratory of Chinese Medicine and Molecular Pharmacology (Incubation), Shenzhen 518057, China.
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China.
| | - Sisi Cao
- State Key Laboratory of Chinese Medicine and Molecular Pharmacology (Incubation), Shenzhen 518057, China.
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China.
| | - Xiaoli Dong
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China.
- Shenzhen Key Laboratory of Food Biological Safety Control, Shenzhen 518057, China.
| | - Man-Chun Law
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China.
| | - Tak-Hang Chan
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China.
- Department of Chemistry, McGill University, Montréal, QC H3A 0B8, Canada.
| | - Man-Sau Wong
- State Key Laboratory of Chinese Medicine and Molecular Pharmacology (Incubation), Shenzhen 518057, China.
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China.
- Shenzhen Key Laboratory of Food Biological Safety Control, Shenzhen 518057, China.
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De Taeye C, Caullet G, Eyamo Evina VJ, Collin S. Procyanidin A2 and Its Degradation Products in Raw, Fermented, and Roasted Cocoa. J Agric Food Chem 2017; 65:1715-1723. [PMID: 28207258 DOI: 10.1021/acs.jafc.6b05262] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Cocoa is known as an important source of flavan-3-ols, but their fate "from the bean to the bar" is not yet clear. Here, procyanidin A2 found in native cocoa beans (9-13 mg/kg) appeared partially epimerized into A2E1 through fermentation, whereas a second epimer (A2E2) emerged after roasting. At m/z 575, dehydrodiepicatechin A was revealed to be the major HPLC peak before fermentation, whereas F1, a marker of well-conducted fermentations, becomes the most intense after roasting. RP-HPLC-ESI(-)-HRMS/MS analysis performed on a procyanidin A2 model medium after 12 h at 90 °C revealed many more degradation products than those identified in fermented cocoa, including the last epimer of A2, A2 open structure intermediates (m/z 577), and oxidized A-type dimers (m/z 573).
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Affiliation(s)
- Cédric De Taeye
- Unité de Brasserie et des Industries Alimentaires, Earth and Life Institute, ELIM, Faculté des Bioingénieurs, Université catholique de Louvain , Croix du Sud, 2 bte L07.05.07, B-1348 Louvain-la-Neuve, Belgium
| | - Gilles Caullet
- Unité de Brasserie et des Industries Alimentaires, Earth and Life Institute, ELIM, Faculté des Bioingénieurs, Université catholique de Louvain , Croix du Sud, 2 bte L07.05.07, B-1348 Louvain-la-Neuve, Belgium
| | - Victor Jos Eyamo Evina
- Unité de Brasserie et des Industries Alimentaires, Earth and Life Institute, ELIM, Faculté des Bioingénieurs, Université catholique de Louvain , Croix du Sud, 2 bte L07.05.07, B-1348 Louvain-la-Neuve, Belgium
| | - Sonia Collin
- Unité de Brasserie et des Industries Alimentaires, Earth and Life Institute, ELIM, Faculté des Bioingénieurs, Université catholique de Louvain , Croix du Sud, 2 bte L07.05.07, B-1348 Louvain-la-Neuve, Belgium
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Abstract
The human diet contains a wide variety of plant-derived flavonoids, many of which are glycosylated via an O- or less commonly a C-glycosidic linkage. The distribution, quantity, and biological effects of C-glycosyl flavonoids in the human diet have received little attention in the literature in comparison to their O-linked counterparts, however, despite being present in many common foodstuffs. The structural nature, nomenclature, and distribution of C-glycosyl flavonoids in the human diet are, therefore, reviewed. Forty-three dietary flavonoids are revealed to be C-glycosylated, arising from the dihydrochalcone, flavone, and flavan-3-ol backbones, and distributed among edible fruits, cereals, leaves, and stems. C-linked sugar groups are shown to include arabinose, galactose, glucose, rutinose, and xylose, often being present more than once on a single flavonoid backbone and occasionally in tandem with O-linked glucose or rutinose groups. The pharmacokinetic fate of these compounds is discussed with particular reference to their apparent lack of interaction with hydrolytic mechanisms known to influence the fate of O-glycosylated dietary flavonoids, explaining the unusual but potentially important appearance of intact C-glycosylated flavonoid metabolites in human urine following oral administration. Finally, the potential biological significance of these compounds is reviewed, describing mechanisms of antidiabetic, antiinflammatory, anxiolytic, antispasmodic, and hepatoprotective effects.
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Affiliation(s)
- Fraser L Courts
- a HONEI, Centre for Cardiovascular and Metabolic Research, Hull York Medical School , University of Hull , Cottingham , HU6 7RX , Hull , UK
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27
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De Taeye C, Cibaka MLK, Jerkovic V, Collin S. Degradation of (-)-epicatechin and procyanidin B2 in aqueous and lipidic model systems. first evidence of "chemical" flavan-3-ol oligomers in processed cocoa. J Agric Food Chem 2014; 62:9002-9016. [PMID: 25167469 DOI: 10.1021/jf502016z] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Despite the key role of flavan-3-ols in many foods, very little is yet known concerning the modification of their chemical structures through food processes. Degradation of model media containing (-)-epicatechin and procyanidin B2, either separately or together, was monitored by RP-HPLC-DAD-ESI(-)-MS/MS. Medium composition (aqueous or lipidic) and temperature (60 and 90 °C) were studied. In aqueous medium at 60 °C, (-)-epicatechin was mainly epimerized to (-)-catechin, but it was also oxidized to "chemical" dimers, a "chemical" trimer, and dehydrodi(epi)catechin A. Unlike oxidation, epimerization was enhanced at 90 °C. In lipidic medium, epimerization proved slow but degradation was faster. Procyanidin B2 likewise proved able to epimerize, especially at 90 °C and in aqueous medium. At high temperature only, the interflavan linkage was cleaved, yielding the same compounds as those found in the monomer-containing model medium. Oxidation to procyanidin A2 was also evidenced. With little epimerization and slow oxidation even at 90 °C, procyanidin B2 proved more stable in lipidic medium. Synergy was also observed: in the presence of the monomer, the dimer degradation rate increased 2-fold at 60 °C. This work states for the first time the presence of newly formed flavan-3-ol oligomers in processed cocoa.
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Affiliation(s)
- Cédric De Taeye
- Unité de Brasserie et des Industries Alimentaires, Earth and Life Institute, ELIM, Faculté d'Ingénierie Biologique, Agronomique et Environnementale, Université catholique de Louvain , Croix du Sud, 2 bte L07.05.07, B-1348 Louvain-la-Neuve, Belgium
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28
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Khater F, Fournand D, Vialet S, Meudec E, Cheynier V, Terrier N. Identification and functional characterization of cDNAs coding for hydroxybenzoate/hydroxycinnamate glucosyltransferases co-expressed with genes related to proanthocyanidin biosynthesis. J Exp Bot 2012; 63:1201-14. [PMID: 22090445 PMCID: PMC3276084 DOI: 10.1093/jxb/err340] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2011] [Revised: 09/30/2011] [Accepted: 10/04/2011] [Indexed: 05/20/2023]
Abstract
Grape proanthocyanidins (PAs) play a major role in the organoleptic properties of wine. They are accumulated mainly in grape skin and seeds during the early stages of berry development. Despite the recent progress in the identification of genes involved in PA biosynthesis, the mechanisms involved in subunit condensation, galloylation, or fine regulation of the spatio-temporal composition of grape berries in PAs are still not elucidated. Two Myb transcription factors, VvMybPA1 and VvMybPA2, controlling the PA pathway have recently been identified and ectopically over-expressed in an homologous system. In addition to already known PA genes, three genes coding for glucosyltransferases were significantly differentially expressed between hairy roots over-expressing VvMybPA1 or VvMybPA2 and control lines. The involvement of these genes in PA biosynthesis metabolism is unclear. The three glucosyltransferases display high sequence similarities with other plant glucosyltransferases able to catalyse the formation of glucose esters, which are important intermediate actors for the synthesis of different phenolic compounds. Studies of the in vitro properties of these three enzymes (K(m), V(max), substrate specificity, pH sensitivity) were performed through production of recombinant proteins in E. coli and demonstrated that they are able to catalyse the formation of 1-O-acyl-Glc esters of phenolic acids but are not active on flavonoids and stilbenes. The transcripts are expressed in the early stages of grape berry development, mainly in the berry skins and seeds. The results presented here suggest that these enzymes could be involved in vivo in PA galloylation or in the synthesis of hydroxycinnamic esters.
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Affiliation(s)
| | | | | | | | | | - N. Terrier
- UMR1083 SPO, bât 28, INRA, 2, place P. Viala, F-34060 Montpellier, France
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29
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Moawad A, Hetta M, Zjawiony JK, Jacob MR, Hifnawy M, Ferreira D. Phytochemical investigation of Cycas circinalis and Cycas revoluta leaflets: moderately active antibacterial biflavonoids. Planta Med 2010; 76:796-802. [PMID: 20072955 PMCID: PMC3711132 DOI: 10.1055/s-0029-1240743] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Chemical examination of the methanolic extract of the leaflets of CYCAS CIRCINALIS L. led to the isolation of one new biflavonoid, (2 S, 2'' S)-2,3,2'',3''-tetrahydro-4',4'''-di- O-methylamentoflavone (tetrahydroisoginkgetin; 2), and 15 known compounds, 11 of which are reported for the first time from C. CIRCINALIS. Chromatographic separation of the chloroform extract of C. REVOLUTA Thunb. leaflets afforded 12 compounds, seven of which are reported for the first time from this species. The isolated compounds from both species include 14 biflavonoids, three lignans, three flavan-3-ols, two flavone- C-glucosides, two NOR-isoprenoids, and one flavanone. This is the first report of NMR and CD data of 2,3,2'',3''-tetrahydro-4'- O-methyl- and 2,3-dihydro-4'- O-methyl-amentoflavone ( 6) and ( 7). The effect of O-methylation on the chemical shifts of the neighboring carbons in the (13)C NMR spectra of the dihydro- and tetrahydro-amentoflavone skeletons provides a tool to identify the location of the methoxy groups. Compounds 2, 6, and 18 displayed moderate antibacterial activity against STAPHYLOCOCCUS AUREUS (IC (50) values of 3.9, 9.7, and 8.2 microM, respectively) and methicillin-resistant S. AUREUS (MRSA; IC (50) values of 5.9, 12.5, and 11.5 microM, respectively).
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Affiliation(s)
- Abeer Moawad
- Department of Pharmacognosy and Research Institute of Pharmaceutical Sciences, School of Pharmacy, University of Mississippi, University, MS, USA
- Department of Pharmacognosy, School of Pharmacy, Beni Suef University, Beni Suef, Egypt
| | - Mona Hetta
- Department of Pharmacognosy, School of Pharmacy, Beni Suef University, Beni Suef, Egypt
| | - Jordan K. Zjawiony
- Department of Pharmacognosy and Research Institute of Pharmaceutical Sciences, School of Pharmacy, University of Mississippi, University, MS, USA
| | - Melissa R. Jacob
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS, USA
| | - Mohamed Hifnawy
- Department of Pharmacognosy, School of Pharmacy, Cairo University, Cairo, Egypt
| | - Daneel Ferreira
- Department of Pharmacognosy and Research Institute of Pharmaceutical Sciences, School of Pharmacy, University of Mississippi, University, MS, USA
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30
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Chobot V, Huber C, Trettenhahn G, Hadacek F. (+/-)-catechin: chemical weapon, antioxidant, or stress regulator? J Chem Ecol 2009; 35:980-96. [PMID: 19701725 PMCID: PMC2746304 DOI: 10.1007/s10886-009-9681-x] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2009] [Revised: 07/23/2009] [Accepted: 08/06/2009] [Indexed: 01/23/2023]
Abstract
(+/-)-Catechin is a flavan-3-ol that occurs in the organs of many plant species, especially fruits. Health-beneficial effects have been studied extensively, and notable toxic effects have not been found. In contrast, (+/-)-catechin has been implicated as a 'chemical weapon' that is exuded by the roots of Centaurea stoebe, an invasive knapweed of northern America. Recently, this hypothesis has been rejected based on (+/-)-catechin's low phytotoxicity, instability at pH levels higher than 5, and poor recovery from soil. In the current study, (+/-)-catechin did not inhibit the development of white and black mustard to an extent that was comparable to the highly phytotoxic juglone, a naphthoquinone that is allegedly responsible for the allelopathy of the walnut tree. At high stress levels, caused by sub-lethal methanol concentrations in the medium, and a 12 h photoperiod, (+/-)-catechin even attenuated growth retardation. A similar effect was observed when (+/-)-catechin was assayed for brine shrimp mortality. Higher concentrations reduced the mortality caused by toxic concentrations of methanol. Further, when (+/-)-catechin was tested in variants of the deoxyribose degradation assay, it was an efficient scavenger of reactive oxygen species (ROS) when they were present in higher concentrations. This antioxidant effect was enhanced when iron was chelated directly by (+/-)-catechin. Conversely, if iron was chelated to EDTA, pro-oxidative effects were demonstrated at higher concentrations; in this case (+/-)-catechin reduced molecular oxygen and iron to reagents required by the Fenton reaction to produce hydroxyl radicals. A comparison of cyclic voltammograms of (+/-)-catechin with the phytotoxic naphthoquinone juglone indicated similar redox-cycling properties for both compounds although juglone required lower electrochemical potentials to enter redox reactions. In buffer solutions, (+/-)-catechin remained stable at pH 3.6 (vacuole) and decomposed at pH 7.4 (cytoplasm) after 24 h. The results support the recent rejection of the hypothesis that (+/-)-catechin may serve as a 'chemical weapon' for invasive plants. Instead, accumulation and exudation of (+/-)-catechin may help plants survive periods of stress.
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Affiliation(s)
- Vladimir Chobot
- Department of Chemical Ecology and Ecosystem Research, Faculty of Life Sciences, University of Vienna, 1090 Vienna, Austria
| | - Christoph Huber
- Department of Physical Chemistry, Faculty of Chemistry, University of Vienna, 1090 Vienna, Austria
| | - Guenter Trettenhahn
- Department of Physical Chemistry, Faculty of Chemistry, University of Vienna, 1090 Vienna, Austria
| | - Franz Hadacek
- Department of Chemical Ecology and Ecosystem Research, Faculty of Life Sciences, University of Vienna, 1090 Vienna, Austria
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