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Fermentation of Clementine Juice with Lactobacillus salivarius spp. salivarius CECT 4063: Effect of Trehalose Addition and High-Pressure Homogenization on Antioxidant Properties, Mucin Adhesion, and Shelf Life. FERMENTATION 2022. [DOI: 10.3390/fermentation8110642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Fermentation of fruit juices with lactic acid bacteria enhances their antioxidant properties to a different extent depending on the microbial strain and the growing media composition, which can be modified by adding certain ingredients or applying a homogenization step. This study analyzed the effect of trehalose addition (10%, w/w) and homogenization at 100 MPa before or after Lactobacillus salivarius spp. salivarius CECT 4063 inoculation on the antioxidant profile and the microbiological properties of commercial clementine juice during 96 h fermentation. Antioxidant properties and viable cell count of 24 h-fermented juices during refrigerated storage (30 days at 4 °C) were also evaluated. Fermentation over 24 h reduced the microbial population and antioxidant content of clementine juice. Homogenizing the juice before inoculation enhanced the microbial growth but favored antioxidant degradation. Adding trehalose (10%, w/w) to the juice formulation and/or homogenizing at the fermented juice at 100 MPa for 24 h had a negative impact on viable counts and did not improve the microbial adhesion to intestinal mucosa. However, both techniques prevented antioxidant oxidation and cell decay during the storage of fermented juice under refrigeration, which should not last more than 15 days.
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2
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Biosynthesis and medicinal applications of proanthocyanidins: A recent update. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2022. [DOI: 10.1016/j.bcab.2022.102500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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3
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Li N, Chen M, Zhu HT, Zhang M, Wang D, Yang CR, Zhang YJ. Theaflavoids A-C, new flavan-3-ols with potent α-glucosidase inhibitory activity from Yunnan black tea 'Jin-Ya'. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.113918] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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4
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Tea (Camellia sinensis): A Review of Nutritional Composition, Potential Applications, and Omics Research. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12125874] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Tea (Camelliasinensis) is the world’s most widely consumed non-alcoholic beverage with essential economic and health benefits since it is an excellent source of polyphenols, catechins, amino acids, flavonoids, carotenoids, vitamins, and polysaccharides. The aim of this review is to summarize the main secondary metabolites in tea plants, and the content and distribution of these compounds in six different types of tea and different organs of tea plant were further investigated. The application of these secondary metabolites on food processing, cosmetics industry, and pharmaceutical industry was reviewed in this study. With the rapid advancements in biotechnology and sequencing technology, omics analyses, including genome, transcriptome, and metabolome, were widely used to detect the main secondary metabolites and their molecular regulatory mechanisms in tea plants. Numerous functional genes and regulatory factors have been discovered, studied, and applied to improve tea plants. Research advances, including secondary metabolites, applications, omics research, and functional gene mining, are comprehensively reviewed here. Further exploration and application trends are briefly described. This review provides a reference for basic and applied research on tea plants.
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5
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Rodríguez-Ruiz A, Mufari J, Albrecht C, Scilipoti J, Velez A. Hydroalcoholic extraction of bioactive compounds from expeller soybean meal under subcritical conditions. J Supercrit Fluids 2022. [DOI: 10.1016/j.supflu.2022.105558] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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6
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Nguyen TVL, Nguyen QD, Nguyen NN, Nguyen TTD. Comparison of Phytochemical Contents, Antioxidant and Antibacterial Activities of Various Solvent Extracts Obtained from 'Maluma' Avocado Pulp Powder. Molecules 2021; 26:7693. [PMID: 34946774 PMCID: PMC8709390 DOI: 10.3390/molecules26247693] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 12/15/2021] [Accepted: 12/16/2021] [Indexed: 11/16/2022] Open
Abstract
Although avocado is a superfood rich in phytochemicals with high antioxidant activities, studies on the antibacterial properties of its pulp are limited, except for seed and peel portions. In this study, three types of solvent (acetone, methanol, and diethyl ether) were used to obtain the extracts from "Maluma" avocado pulp powder prepared by infrared drying. The extracts were analyzed for total polyphenols, phytopigments (total chlorophylls and carotenoids), antioxidant activities (ferric-reducing antioxidant power (FRAP), 2,2-Diphenyl-1-picrylhydrazyl (DPPH), and 2,2-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid (ABTS) assays), and antibacterial activities against seven pathogens (Shigella sonnei ATCC 9290, Escherichia coli ATCC 8739, Salmonella typhi ATCC 6539, Vibrio parahaemolyticus ATCC 17802, Proteus mirabilis ATCC 25933, Staphylococcus aureus ATCC 6538, and Bacillus cereus ATCC 11778). The results showed that the acetone solvent could extract the highest polyphenols and chlorophylls with the highest antioxidant activity in terms of ABTS and DPPH assays. In contrast, diethyl ether exhibited the most significant content of carotenoids and FRAP values. However, the methanol extract was the best solvent, exerting the strongest antibacterial and meaningful antioxidant activities. For the bacterial activities, Gram-positive pathogens (Bacillus cereus and Staphylococcus aureus) were inhibited more efficiently by avocado extracts than Gram-negative bacteria. Therefore, the extracts from avocado powder showed great potential for applications in food processing and preservation, pharmaceuticals, and cosmetics.
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Affiliation(s)
- Thi-Van-Linh Nguyen
- Faculty of Environmental and Food Engineering, Nguyen Tat Thanh University, Ho Chi Minh City 754000, Vietnam; (Q.-D.N.); (N.-N.N.); (T.-T.-D.N.)
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Antioxidant properties and phenolic composition of "Composed Yerba Mate". Journal of Food Science and Technology 2021; 58:4711-4721. [PMID: 34629535 DOI: 10.1007/s13197-020-04961-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 12/10/2020] [Accepted: 12/29/2020] [Indexed: 10/22/2022]
Abstract
Yerba mate contains bioactive compounds, and is widely consumed as a decoction beverage in several Southern American countries. At present, the consumption of mate with added herbal blends and flavors, called "composed yerba mate", has increased; however, no studies on the antioxidant characteristics of these products have been published. In this sense, the main objective was to assess the antioxidant characteristics of "composed yerba mate" compared to "traditional yerba mate", in the form it is traditionally consumed. Total polyphenols content ranged from 15 to 45 mg/g GAE in all decoctions analyzed. Seventeen phenolic compounds were identified and quantified by HPLC-DAD-MS/MS, mainly belonging to the caffeoylquinic acids group. The antioxidant capacity was measured using in vitro assays, Ferric reducing ability of plasma (FRAP) and Trolox equivalent antioxidant capacity (TEAC), and with Saccharomyces cerevisiae as the in vivo model organism. All decoctions displayed antioxidant activity and were capable of rescuing yeast cells between 10.68 and 18.38% from oxidative stress. Multiple regression analysis showed a high correlation between phenolic composition and activity of samples, where different compounds indicate a significant contribution to the observed activity. Significant differences were found in the content, profile and antioxidant activity of polyphenols when "traditional yerba mate" and "composed yerba mate" were compared. In some cases, the antioxidant capacity was similar or higher in composed yerba mate; while the rest displayed lower biological activity. Based on these findings, it would be possible to assume that the addition of herb mixtures modifies the antioxidant and biological properties of mate. Supplementary Information The online version contains supplementary material available at (10.1007/s13197-020-04961-x).
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Imran A, Arshad MU, Sherwani H, Shabir Ahmad R, Arshad MS, Saeed F, Hussain G, Afzaal M, Imran M, Naeem U, Ikram A, Anjum FM. Antioxidant capacity and characteristics of theaflavin catechins and ginger freeze-dried extract as affected by extraction techniques. INTERNATIONAL JOURNAL OF FOOD PROPERTIES 2021. [DOI: 10.1080/10942912.2021.1953524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Ali Imran
- Institute of Home and Food Sciences, Government College University, Faisalabad, Pakistan
| | - Muhammad Umair Arshad
- Institute of Home and Food Sciences, Government College University, Faisalabad, Pakistan
| | - Hafsah Sherwani
- women medical officer, RHC (Rural Health Centre) Mustafabad, Kasur, Pakistan
| | - Rabia Shabir Ahmad
- Institute of Home and Food Sciences, Government College University, Faisalabad, Pakistan
| | - Muhammad Sajid Arshad
- Institute of Home and Food Sciences, Government College University, Faisalabad, Pakistan
| | - Farhan Saeed
- Institute of Home and Food Sciences, Government College University, Faisalabad, Pakistan
| | - Ghulam Hussain
- Neurochemicalbiology and Genetics Laboratory (NGL), Department of Physiology, Faculty of Life Sciences, Government College University, Faisalabad, Pakistan
| | - Muhammad Afzaal
- Institute of Home and Food Sciences, Government College University, Faisalabad, Pakistan
| | - Muhammad Imran
- University Institute of Diet and Nutritional Sciences, Faculty of Allied Health Sciences, The University of Lahore, Lahore, Pakistan
| | - Usman Naeem
- Institute of Home and Food Sciences, Government College University, Faisalabad, Pakistan
| | - Ali Ikram
- Institute of Home and Food Sciences, Government College University, Faisalabad, Pakistan
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9
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Febrianto NA, Wang S, Zhu F. Chemical and biological properties of cocoa beans affected by processing: a review. Crit Rev Food Sci Nutr 2021; 62:8403-8434. [PMID: 34047627 DOI: 10.1080/10408398.2021.1928597] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Cocoa (Theobroma cacao L.) is widely cultivated in tropical countries. The cocoa beans are a popular ingredient of confectionery. Cocoa beans contain various chemicals that contribute to their bioactivity and nutritional properties. There has been increasing interest in developing cocoa beans for "healthy" food products. Cocoa beans have special combination of nutrients such as lipids, carbohydrates, proteins and other compounds of biological activities. The bioactive phytochemicals include methylxanthines, polyphenols, biogenic amines, melanoidins, isoprostanoids and oxalates. These phytochemicals of cocoa are related to various in vivo and in vitro biological activities such as antioxidation, anti-cancer, anti-microbial, anti-inflammation, anti-diabetes, cardiovascular protection, physical improvement, anti-photoaging, anti-depression and blood glucose regulation. The potential of bioactive compounds in cocoa remains to be maximized for food and nutritional applications. The current processing technology promotes the degradation of beneficial bioactive compounds, while maximizing the flavors and its precursors. It is not optimized for the utilization of cocoa beans for "healthy" product formulations. Modifications of the current processing line and non-conventional processing are needed to better preserve and utilize the beneficial bioactive compounds in cocoa beans.
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Affiliation(s)
- Noor Ariefandie Febrianto
- School of Chemical Sciences, University of Auckland, Auckland, New Zealand.,Indonesian Coffee and Cocoa Research Institute (ICCRI), Jember, East Java, Indonesia
| | - Sunan Wang
- School of Chemical Sciences, University of Auckland, Auckland, New Zealand.,Canadian Food and Wine Institute, Niagara College, Ontario, Canada
| | - Fan Zhu
- School of Chemical Sciences, University of Auckland, Auckland, New Zealand
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10
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Gogoi M, Borkotoky M, Borchetia S, Chowdhury P, Mahanta S, Barooah AK. Black tea bioactives as inhibitors of multiple targets of SARS-CoV-2 (3CLpro, PLpro and RdRp): a virtual screening and molecular dynamic simulation study. J Biomol Struct Dyn 2021; 40:7143-7166. [PMID: 33715595 DOI: 10.1080/07391102.2021.1897679] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The global pandemic due to the novel Severe Acute Respiratory Syndrome Corona Virus 2 (SARS-CoV-2) has taken more than a million lives. Lack of definitive vaccine/drugs against this highly contagious virus has accelerated exploratory research on novel natural and synthetic inhibitors. Tea is a rich source of bioactives and known to have antiviral properties. In this study, an in silico strategy involving ADMET property screening, receptor-ligand docking and molecular dynamic (MD) simulation was employed to screen potential tea bio-active inhibitors against three selected targets (RdRp, 3CLpro and PLpro) of SARS-CoV-2. Among the 70 tea bioactives screened, theaflavin 3,3'-di-gallate (TF3), Procyanidin B2 and Theaflavin 3-gallate (TF2a) exhibited highest binding affinities towards RdRp, 3CLpro/Mpro and PLpro targets of SARS-CoV-2 with low docking scores of -14.92, -11.68 and -10.90 kcal/mol, respectively. All of them showed a substantial number of hydrogen bonds along with other interactions in and around the active sites. Interestingly, the top bioactives in our study showed higher binding affinities compared with known antiviral drugs. Further, the top protein-ligand complexes showed less conformational changes during binding when subjected to MD simulation for 100 nanoseconds. The MMPBSA results revealed that RdRp-TF3, 3CLpro-Procyanidin B2 and PLpro-TF2a complexes were stable with binding free energies of -93.59 ± 43.97, -139.78 ± 16.51 and -96.88 ± 25.39 kJ/mol, respectively. Our results suggest that theaflavin 3,3'-digallate, Theaflavin 3-gallate and Procyanidin B2 found in black tea have the potential to act as inhibitors for selected targets of SARS-CoV-2 and can be considered as drug candidates in future studies against COVID-19.
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Affiliation(s)
- Madhurjya Gogoi
- Department of Biotechnology, Tea Research Association, Tocklai Tea Research Institute, Jorhat, Assam, India
| | - Meghali Borkotoky
- Department of Biotechnology, Tea Research Association, Tocklai Tea Research Institute, Jorhat, Assam, India
| | - Sangeeta Borchetia
- Department of Biotechnology, Tea Research Association, Tocklai Tea Research Institute, Jorhat, Assam, India
| | - Pritom Chowdhury
- Department of Biotechnology, Tea Research Association, Tocklai Tea Research Institute, Jorhat, Assam, India
| | - Saurov Mahanta
- National Institute of Electronics and Information Technology, Guwahati, Assam, India
| | - Anoop Kumar Barooah
- Tea Research Association, Tocklai Tea Research Institute, Jorhat, Assam, India
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11
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Wang N, Zhou Y, Zhao L, Wang C, Ma W, Ge G, Wang Y, Ullah I, Muhammad F, Alwayli D, Zhi D, Li H. Ferulic acid delayed amyloid β-induced pathological symptoms by autophagy pathway via a fasting-like effect in Caenorhabditis elegans. Food Chem Toxicol 2020; 146:111808. [PMID: 33045309 DOI: 10.1016/j.fct.2020.111808] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 09/27/2020] [Accepted: 10/06/2020] [Indexed: 12/19/2022]
Abstract
The amyloid β (Aβ) generation or aggregation plays a crucial role in Alzheimer's disease (AD). Autophagy agonists, which function as the clearance of Aβ, could be the potential drug candidates against AD. In staple food crops, ferulic acid (FA) is an enormously copious and almost ubiquitous phenolic antioxidant. In the present study, FA significantly inhibited Aβ-induced pathological symptoms of paralysis and hypersensitivity to exogenous serotonin, meanwhile restrained Aβ monomers, oligomers, and deposits in AD C. elegans. FA increased the expression of autophagy reporter LGG-1 and enhanced autophagy flux. However, the autophagy inhibitors abolished the restrictive action of FA on the worm paralysis phenotype. According to these results, FA triggered autophagy and ameliorated Aβ-induced pathological symptoms by the autophagy pathway. Moreover, FA activated the HLH-30 transcription factor to nuclear localization, which acts upstream of autophagy in fasted animals, reduced the level of lipids, but affected nor the growth of E. coli OP50, neither animal food intake behavior. These suggest that FA induced a fasting-like effect to activate the autophagy pathway. Additionally, FA ameliorated poly Q aggregations in Huntington's disease worm. Thus, FA could not only affect AD, broadly but also neurodegenerative diseases characterized by misfolded or aggregated proteins.
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Affiliation(s)
- Ningbo Wang
- School of Life Sciences, Lanzhou University, China.
| | - Yongtao Zhou
- Department of Neurology, Xuanwu Hospital of Capital Medical University, Beijing, China; Clinical Center for Parkinson's Disease, Capital Medical University, Beijing, China.
| | - Longhe Zhao
- School of Pharmacy, Lanzhou University, China.
| | - Caiding Wang
- School of Life Sciences, Lanzhou University, China.
| | - Wuli Ma
- School of Life Sciences, Lanzhou University, China.
| | - Guangfei Ge
- School of Life Sciences, Lanzhou University, China.
| | - Yu Wang
- School of Pharmacy, Lanzhou University, China.
| | - Inam Ullah
- School of Life Sciences, Lanzhou University, China.
| | | | | | - Dejuan Zhi
- School of Pharmacy, Lanzhou University, China.
| | - Hongyu Li
- School of Life Sciences, Lanzhou University, China; School of Pharmacy, Lanzhou University, China.
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12
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Burca-Busaga CG, Betoret N, Seguí L, Betoret E, Barrera C. Survival of Lactobacillus salivarius CECT 4063 and Stability of Antioxidant Compounds in Dried Apple Snacks as Affected by the Water Activity, the Addition of Trehalose and High Pressure Homogenization. Microorganisms 2020; 8:microorganisms8081095. [PMID: 32707848 PMCID: PMC7463932 DOI: 10.3390/microorganisms8081095] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 07/17/2020] [Accepted: 07/20/2020] [Indexed: 01/08/2023] Open
Abstract
Survival of probiotic microorganisms in dried foods is optimal for water activity (aw) values between 0.1 and 0.3. Encapsulating and adding low-molecular weight additives can enhance probiotic viability in intermediate aw food products, but the effectiveness of sub-lethal homogenization is still not proven. This study evaluates the effect of 10% (w/w) trehalose addition and/or 100 MPa homogenization on Lactobacillussalivarius CECT 4063 counts and antioxidant properties of apple slices dried to different water activity values (freeze-drying to a aw of 0.25 and air-drying at 40 °C to a aw of 0.35 and 0.45) during four-week storage. Optical and mechanical properties of dried samples were also analyzed. Freeze-drying had the least effect on the microbial counts and air drying at 40 °C to a aw of 0.35 had the greatest effect. Antioxidant properties improved with drying, especially with convective drying. Decreases in both microbial and antioxidant content during storage were favored in samples with higher water activity values. Adding trehalose improved cell survival during storage in samples with a water activity of 0.35, but 100 MPa homogenization increased the loss of viability in all cases. Air-dried samples became more translucent and reddish, rather rubbery and less crispy than freeze-dried ones.
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Affiliation(s)
- Cristina Gabriela Burca-Busaga
- Instituto Universitario de Ingeniería de Alimentos para el Desarrollo, Universitat Politècnica de València, 46022 Valencia, Spain; (C.G.B.-B.); (N.B.); (L.S.)
| | - Noelia Betoret
- Instituto Universitario de Ingeniería de Alimentos para el Desarrollo, Universitat Politècnica de València, 46022 Valencia, Spain; (C.G.B.-B.); (N.B.); (L.S.)
| | - Lucía Seguí
- Instituto Universitario de Ingeniería de Alimentos para el Desarrollo, Universitat Politècnica de València, 46022 Valencia, Spain; (C.G.B.-B.); (N.B.); (L.S.)
| | - Ester Betoret
- Instituto de Agroquímica y Tecnología de Alimentos, Consejo Superior de Investigaciones Científicas, 46980 Paterna, Spain;
| | - Cristina Barrera
- Instituto Universitario de Ingeniería de Alimentos para el Desarrollo, Universitat Politècnica de València, 46022 Valencia, Spain; (C.G.B.-B.); (N.B.); (L.S.)
- Correspondence: ; Tel.: +34-629-987-104
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Characterization of Powdered Lulo ( Solanum quitoense) Bagasse as a Functional Food Ingredient. Foods 2020; 9:foods9060723. [PMID: 32498370 PMCID: PMC7353594 DOI: 10.3390/foods9060723] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 05/28/2020] [Accepted: 06/01/2020] [Indexed: 11/16/2022] Open
Abstract
The stabilization of fruit bagasse by drying and milling technology is a valuable processing technology to improve its durability and preserve its valuable biologically active components. The objective of this study was to evaluate the effect of lyophilization and air temperature (60 °C and 70 °C) in hot air-drying as well as grinding conditions (coarse or fine granulometry) on physico-chemical properties; water interaction capacity; antioxidant properties; and carotenoid content of powdered lulo bagasse. Air-drying kinetics at 60 °C and 70 °C and sorption isotherms at 20 °C were also determined. Results showed that drying conditions influence antioxidant properties and carotenoid content while granulometry slightly influenced fiber and water interaction properties. Fiber content was near 50% and carotenoid content was higher than 60 µg/g dry matter in lyophilized powder. This β-carotene content is comparable to that provided by carrot juice. Air-drying at 60 °C only reduced carotenoids content by 10%.
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Cao SY, Zhao CN, Gan RY, Xu XY, Wei XL, Corke H, Atanasov AG, Li HB. Effects and Mechanisms of Tea and Its Bioactive Compounds for the Prevention and Treatment of Cardiovascular Diseases: An Updated Review. Antioxidants (Basel) 2019; 8:E166. [PMID: 31174371 PMCID: PMC6617169 DOI: 10.3390/antiox8060166] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2019] [Revised: 06/03/2019] [Accepted: 06/04/2019] [Indexed: 12/16/2022] Open
Abstract
Cardiovascular diseases (CVDs) are critical global public health issues with high morbidity and mortality. Epidemiological studies have revealed that regular tea drinking is inversely associated with the risk of CVDs. Additionally, substantial in vitro and in vivo experimental studies have shown that tea and its bioactive compounds are effective in protecting against CVDs. The relevant mechanisms include reducing blood lipid, alleviating ischemia/reperfusion injury, inhibiting oxidative stress, enhancing endothelial function, attenuating inflammation, and protecting cardiomyocyte function. Moreover, some clinical trials also proved the protective role of tea against CVDs. In order to provide a better understanding of the relationship between tea and CVDs, this review summarizes the effects of tea and its bioactive compounds against CVDs and discusses potential mechanisms of action based on evidence from epidemiological, experimental, and clinical studies.
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Affiliation(s)
- Shi-Yu Cao
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China.
| | - Cai-Ning Zhao
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China.
| | - Ren-You Gan
- Department of Food Science & Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Xiao-Yu Xu
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China.
| | - Xin-Lin Wei
- Department of Food Science & Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Harold Corke
- Department of Food Science & Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Atanas G Atanasov
- The Institute of Genetics and Animal Breeding, Polish Academy of Sciences, Jastrzębiec, 05-552 Magdalenka, Poland.
- Department of Pharmacognosy, University of Vienna, 1090 Vienna, Austria.
- Institute of Neurobiology, Bulgarian Academy of Sciences, 23 Acad. G. Bonchev str., 1113 Sofia, Bulgaria.
| | - Hua-Bin Li
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China.
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Barrera C, Burca C, Betoret E, García‐Hernández J, Hernández M, Betoret N. Improving antioxidant properties and probiotic effect of clementine juice inoculated with
Lactobacillus salivarius
spp.
salivarius
(CECT 4063) by trehalose addition and/or sublethal homogenisation. Int J Food Sci Technol 2019. [DOI: 10.1111/ijfs.14116] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Cristina Barrera
- Instituto de Ingeniería de Alimentos para el desarrollo Universitat Politècnica de València Camino de Vera s/n 46022 Valencia Spain
| | - Cristina Burca
- Instituto de Ingeniería de Alimentos para el desarrollo Universitat Politècnica de València Camino de Vera s/n 46022 Valencia Spain
| | - Ester Betoret
- Instituto de Agroquímica y Tecnología de Alimentos Consejo Superior de Investigaciones Científicas C/ Catedrático Agustín Escardino Benlloch 7 46980 Paterna Spain
| | - Jorge García‐Hernández
- Departamento de Biotecnología Universitat Politècnica de València Camino de Vera s/n 46022 Valencia Spain
| | - Manuel Hernández
- Departamento de Biotecnología Universitat Politècnica de València Camino de Vera s/n 46022 Valencia Spain
| | - Noelia Betoret
- Instituto de Ingeniería de Alimentos para el desarrollo Universitat Politècnica de València Camino de Vera s/n 46022 Valencia Spain
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Grosso AL, Asensio CM, Nepote V, Grosso NR. Antioxidant Activity Displayed by Phenolic Compounds Obtained from Walnut Oil Cake used for Walnut Oil Preservation. J AM OIL CHEM SOC 2018. [DOI: 10.1002/aocs.12145] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Antonella L. Grosso
- Facultad de Ciencias Agropecuarias; Universidad Nacional de Córdoba (UNC), Instituto Multidisciplinario de Biología Vegetal (IMBIV), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Ing. Agr. Félix Aldo Marrone 746 CC 509; X5016GCA Córdoba Argentina
| | - Claudia M. Asensio
- Facultad de Ciencias Agropecuarias; Universidad Nacional de Córdoba (UNC), Instituto Multidisciplinario de Biología Vegetal (IMBIV), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Ing. Agr. Félix Aldo Marrone 746 CC 509; X5016GCA Córdoba Argentina
| | - Valeria Nepote
- Facultad de Ciencias Exactas, Físicas y Naturales; Universidad Nacional de Córdoba (UNC), Instituto Multidisciplinario de Biología Vegetal (IMBIV), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. Vélez Sarsfield 1611; 5000 Córdoba Argentina
| | - Nelson R. Grosso
- Facultad de Ciencias Agropecuarias; Universidad Nacional de Córdoba (UNC), Instituto Multidisciplinario de Biología Vegetal (IMBIV), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Ing. Agr. Félix Aldo Marrone 746 CC 509; X5016GCA Córdoba Argentina
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Salloum MS, Menduni MF, Benavides MP, Larrauri M, Luna CM, Silvente S. Polyamines and flavonoids: key compounds in mycorrhizal colonization of improved and unimproved soybean genotypes. Symbiosis 2018. [DOI: 10.1007/s13199-018-0558-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Cassano A, De Luca G, Conidi C, Drioli E. Effect of polyphenols-membrane interactions on the performance of membrane-based processes. A review. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.06.013] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Valorisation of softwood bark through extraction of utilizable chemicals. A review. Biotechnol Adv 2017; 35:726-750. [PMID: 28739505 DOI: 10.1016/j.biotechadv.2017.07.007] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Revised: 06/20/2017] [Accepted: 07/11/2017] [Indexed: 01/31/2023]
Abstract
Softwood bark is an important source for producing chemicals and materials as well as bioenergy. Extraction is regarded as a key technology for obtaining chemicals in general, and valorizing bark as a source of such chemicals in particular. In this paper, properties of 237 compounds identified in various studies dealing with extraction of softwood bark were described. Finally, some challenges and perspectives on the production of chemicals from bark are discussed.
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Peluso I, Serafini M. Antioxidants from black and green tea: from dietary modulation of oxidative stress to pharmacological mechanisms. Br J Pharmacol 2017; 174:1195-1208. [PMID: 27747873 PMCID: PMC5429329 DOI: 10.1111/bph.13649] [Citation(s) in RCA: 135] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Revised: 09/12/2016] [Accepted: 09/29/2016] [Indexed: 12/15/2022] Open
Abstract
The consumption of tea (Camellia sinensis) has been correlated with a low incidence of chronic pathologies, such as cardiovascular disease and cancer, in which oxidative stress plays a critical role. Tea catechins and theaflavins are, respectively, the bioactive phytochemicals responsible for the antioxidant activity of green tea (GT) and black tea (BT). In addition to their redox properties, tea catechins and theaflavins could have also pharmacological activities, such as the ability to lower glucose, lipid and uric acid (UA) levels. These activities are mediated by pharmacological mechanisms such as enzymatic inhibition and interaction with transporters. Epigallocatechin gallate is the most active compound at inhibiting the enzymes involved in cholesterol and UA metabolism (hydroxy-3-methyl-glutaryl-CoA reductase and xanthine oxidase respectively) and affecting glucose transporters. The structural features of catechins that significantly contribute to their pharmacological effect are the presence/absence of the galloyl moiety and the number and positions of the hydroxyl groups on the rings. Although the inhibitory effects on α-glucosidase, maltase, amylase and lipase, multidrug resistance 1, organic anion transporters and proton-coupled folate transport occur at higher concentrations than those apparent in the circulation, these effects could be relevant in the gut. In conclusion, despite the urgent need for further research in humans, the regular consumption of moderate quantities of GT and BT can effectively modulate their antioxidant capacity, mainly in people subjected to oxidative stress, and could improve the metabolism of glucose, lipid and UA. LINKED ARTICLES This article is part of a themed section on Principles of Pharmacological Research of Nutraceuticals. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v174.11/issuetoc.
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Affiliation(s)
- Ilaria Peluso
- Functional Foods and Metabolic Stress Prevention Laboratory, Centre for Food and NutritionCouncil for Agricultural Research and EconomicsRomeItaly
| | - Mauro Serafini
- Functional Foods and Metabolic Stress Prevention Laboratory, Centre for Food and NutritionCouncil for Agricultural Research and EconomicsRomeItaly
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Cruz-González T, Cortez-Torres E, Perez-Severiano F, Espinosa B, Guevara J, Perez-Benitez A, Melendez FJ, Díaz A, Ramírez RE. Antioxidative stress effect of epicatechin and catechin induced by Aβ 25-35 in rats and use of the electrostatic potential and the Fukui function as a tool to elucidate specific sites of interaction. Neuropeptides 2016; 59:89-95. [PMID: 27118677 DOI: 10.1016/j.npep.2016.04.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Revised: 04/12/2016] [Accepted: 04/12/2016] [Indexed: 11/20/2022]
Abstract
Alzheimer's disease (AD) is a neurodegenerative disorder caused by the aggregation of the amyloid-beta peptide (Aβ) in senile plaques and cerebral vasculature. The Aβ25-35 fraction has shown the most toxicity; its neurotoxic mechanisms are associated with the generation of oxidative stress and reactive astrogliosis that induce neuronal death and memory impairment. Studies indicate that pharmacological treatment with flavonoids reduces the rate of AD, in particular, it has been shown that antioxidants are compounds that could interact with this peptide due to their antioxidant proprieties. In this study, experimental and computational tools were used to calculate the molecular electrostatic potential and the Fukui function with the Gaussian 09 computational program, to predict the most reactive parts of these molecules and make the complex between Aβ25-35 and two flavonoids (catechin and epicatechin) in the absolute gas-phase, where a possible interaction between them was observed. This is important for understanding the Aβ25-35-Flavonoid (A-F) interaction as a therapeutic strategy to inhibit the neurotoxic effects that this peptide causes in AD, which currently is still considered an ambiguous process.
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Affiliation(s)
- Trinidad Cruz-González
- Departamento de Fisicomatematicas, Facultad de Ciencias Químicas Benemérita Universidad Autónoma de Puebla, Av. San Claudio y 14 Sur, Col. San Manuel, Puebla, Pue. 72570, Mexico
| | - Estephania Cortez-Torres
- Laboratorio Experimental de Enfermedades Neurodegenrativas, Instituto Nacional de Neurología y Neurocirugía, Manuel Velasco Suárez, 14269 Mexico City, Mexico
| | - Francisca Perez-Severiano
- Departamento de Neuroquímica, Instituto Nacional de Neurología y Neurocirugía, Manuel Velasco Suárez, 14269 Mexico City, Mexico
| | - Blanca Espinosa
- Departamento de Bioquímica, Instituto Nacional de Enfermedades Respiratorias, Mexico, D.F., Mexico
| | - Jorge Guevara
- Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Aarón Perez-Benitez
- Departamento de Química Organica, Facultad de Ciencias Químicas, Benemérita, Universidad Autónoma de Puebla, Av. San Claudio y 14 Sur, Col. San Manuel, Puebla, Pue. 72570, Mexico
| | - Francisco J Melendez
- Lab. de Química Teórica, Centro de Investigación, Dpto. de Fisicoquímica, Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Edif. 105-I, San Claudio y 22 Sur, Ciudad Universitaria, Col. San Manuel, Puebla, Puebla 72570, Mexico
| | - Alfonso Díaz
- Departamento de Farmacia, Facultad de Ciencias Químicas Benemérita Universidad Autónoma de Puebla, Av. San Claudio y 14 Sur, Col. San Manuel, Puebla, Pue. 72570, Mexico.
| | - Ramsés E Ramírez
- Departamento de Fisicomatematicas, Facultad de Ciencias Químicas Benemérita Universidad Autónoma de Puebla, Av. San Claudio y 14 Sur, Col. San Manuel, Puebla, Pue. 72570, Mexico.
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Imran A, Sadiq Butt M, Saeed F, Sajid Arshad M, Sultan T, Sohaib M. Effect of Different Time-Solvent Interactions on Polyphenol Content of Milky Tea. J FOOD PROCESS PRES 2016. [DOI: 10.1111/jfpp.13039] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Ali Imran
- Department of Food Science; Nutrition and Home Economics, Government College University; Faisalabad Pakistan
| | - Masood Sadiq Butt
- National Institute of Food Science and Technology, University of Agriculture; Faisalabad Pakistan
| | - Farhan Saeed
- Department of Food Science; Nutrition and Home Economics, Government College University; Faisalabad Pakistan
| | - Muhammad Sajid Arshad
- Department of Food Science; Nutrition and Home Economics, Government College University; Faisalabad Pakistan
| | - Tauseef Sultan
- Department of Food Science and Technology; Bahauddin Zakariya University; Multan Pakistan
| | - Muhamad Sohaib
- Department of Food Science; Nutrition and Home Economics, Government College University; Faisalabad Pakistan
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de Oliveira CC, Calado VMDA, Ares G, Granato D. Statistical Approaches to Assess the Association between Phenolic Compounds and the in vitro Antioxidant Activity of Camellia sinensis and Ilex paraguariensis Teas. Crit Rev Food Sci Nutr 2016; 55:1456-73. [PMID: 24918265 DOI: 10.1080/10408398.2012.750233] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Tea presents a diverse phenolic composition which is responsible for its alleged biological activities, including the in vivo and in vitro antioxidant capacity. It is very usual to find researches applying statistical methods, such as analysis of variances (ANOVA) and linear Pearson correlation coefficients to analyze the strength of correlation between phenolic composition and the in vitro antioxidant activity of teas from Camellia sinensis (green, black, white, oolong, red, and yellow teas) and Ilex paraguariensis (Yerba-mate), which are the most produced and consumed types of teas. However, evidence has shown that these approaches are not as suitable as multivariate statistical methods once they do not depict nor show association among all results and variables simultaneously, making it difficult to understand clearly the data structure and patterns. Then, the objective of this work is to review and explain some univariate/bivariate and multivariate statistical techniques used to assess the association between phenolic compounds and the in vitro antioxidant activity of green, white, black, red, yellow, oolong and Yerba-mate teas. Moreover, this paper provides an overview on some assays used to estimate the in vitro antioxidant capacity of teas.
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Affiliation(s)
- Camila Cardoso de Oliveira
- a Instituto Adolfo Lutz- Núcleo de Análise e Tratamento de Dados-Av. Dr. Arnaldo, 355, 01246-902 , São Paulo , Brazil
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Vieira V, Fernandes Â, Barros L, Glamočlija J, Ćirić A, Stojković D, Martins A, Soković M, Ferreira ICFR. Wild Morchella conica Pers. from different origins: a comparative study of nutritional and bioactive properties. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2016; 96:90-98. [PMID: 25546397 DOI: 10.1002/jsfa.7063] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2014] [Revised: 12/13/2014] [Accepted: 12/21/2014] [Indexed: 06/04/2023]
Abstract
BACKGROUND Morchella conica Pers. is a species of fungus that belongs to the Morchellaceae family and was studied in order to obtain more information about this species, by comparing Portuguese and Serbian wild samples. Free sugars, fatty acids, tocopherols, organic and phenolic acids were analysed by chromatographic techniques. M. conica methanolic extracts were tested regarding antioxidant and antimicrobial properties. The absence of hepatotoxicity was confirmed in porcine liver primary cells. RESULTS The nutrition value varied between the two samples and the Serbian one gave the highest energy contribution and content in sugars, polyunsaturated fatty acids and phenolic compounds, while the Portuguese sample was richer in saturated and monounsaturated fatty acids, tocopherols and organic acids. In general, the Portuguese sample revealed the highest antioxidant potential (except for lipid peroxidation inhibition), while the Serbian one displayed higher antimicrobial activity. None of the samples revealed toxicity towards liver cells. CONCLUSION The present study provides new data concerning chemical characterization and bioactivity of Morchella conica Pers.
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Affiliation(s)
- Vanessa Vieira
- Mountain Research Centre (CIMO), ESA, Polytechnic Institute of Bragança, 5301-855, Bragança, Portugal
| | - Ângela Fernandes
- Mountain Research Centre (CIMO), ESA, Polytechnic Institute of Bragança, 5301-855, Bragança, Portugal
| | - Lillian Barros
- Mountain Research Centre (CIMO), ESA, Polytechnic Institute of Bragança, 5301-855, Bragança, Portugal
| | - Jasmina Glamočlija
- Department of Plant Physiology, Institute for Biological Research 'Siniša Stanković', University of Belgrade, 11000, Belgrade, Serbia
| | - Ana Ćirić
- Department of Plant Physiology, Institute for Biological Research 'Siniša Stanković', University of Belgrade, 11000, Belgrade, Serbia
| | - Dejan Stojković
- Department of Plant Physiology, Institute for Biological Research 'Siniša Stanković', University of Belgrade, 11000, Belgrade, Serbia
| | - Anabela Martins
- Mountain Research Centre (CIMO), ESA, Polytechnic Institute of Bragança, 5301-855, Bragança, Portugal
| | - Marina Soković
- Department of Plant Physiology, Institute for Biological Research 'Siniša Stanković', University of Belgrade, 11000, Belgrade, Serbia
| | - Isabel C F R Ferreira
- Mountain Research Centre (CIMO), ESA, Polytechnic Institute of Bragança, 5301-855, Bragança, Portugal
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Ahmad A, Kaleem M, Ahmed Z, Shafiq H. Therapeutic potential of flavonoids and their mechanism of action against microbial and viral infections—A review. Food Res Int 2015. [DOI: 10.1016/j.foodres.2015.06.021] [Citation(s) in RCA: 109] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Liu S, Huang H. Assessments of antioxidant effect of black tea extract and its rationals by erythrocyte haemolysis assay, plasma oxidation assay and cellular antioxidant activity (CAA) assay. J Funct Foods 2015. [DOI: 10.1016/j.jff.2014.08.023] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
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Sarwar T, Zafaryab M, Husain MA, Ishqi HM, Rehman SU, Rizvi MMA, Tabish M. Redox cycling of endogenous copper by ferulic acid leads to cellular DNA breakage and consequent cell death: A putative cancer chemotherapy mechanism. Toxicol Appl Pharmacol 2015; 289:251-61. [PMID: 26415834 DOI: 10.1016/j.taap.2015.09.018] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2015] [Revised: 09/15/2015] [Accepted: 09/24/2015] [Indexed: 12/12/2022]
Abstract
Ferulic acid (FA) is a plant polyphenol showing diverse therapeutic effects against cancer, diabetes, cardiovascular and neurodegenerative diseases. FA is a known antioxidant at lower concentrations, however at higher concentrations or in the presence of metal ions such as copper, it may act as a pro-oxidant. It has been reported that copper levels are significantly raised in different malignancies. Cancer cells are under increased oxidative stress as compared to normal cells. Certain therapeutic substances like polyphenols can further increase this oxidative stress and kill cancer cells without affecting the proliferation of normal cells. Through various in vitro experiments we have shown that the pro-oxidant properties of FA are enhanced in the presence of copper. Comet assay demonstrated the ability of FA to cause oxidative DNA breakage in human peripheral lymphocytes which was ameliorated by specific copper-chelating agent such as neocuproine and scavengers of ROS. This suggested the mobilization of endogenous copper in ROS generation and consequent DNA damage. These results were further validated through cytotoxicity experiments involving different cell lines. Thus, we conclude that such a pro-oxidant mechanism involving endogenous copper better explains the anticancer activities of FA. This would be an alternate non-enzymatic, and copper-mediated pathway for the cytotoxic activities of FA where it can selectively target cancer cells with elevated levels of copper and ROS.
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Affiliation(s)
- Tarique Sarwar
- Department of Biochemistry, Faculty of Life Sciences, A.M. University, Aligarh, UP 202002, India
| | - Md Zafaryab
- Genome Biology Lab, Department of Biosciences, Jamia Millia Islamia, Central University, New Delhi 110025, India
| | - Mohammed Amir Husain
- Department of Biochemistry, Faculty of Life Sciences, A.M. University, Aligarh, UP 202002, India
| | - Hassan Mubarak Ishqi
- Department of Biochemistry, Faculty of Life Sciences, A.M. University, Aligarh, UP 202002, India
| | - Sayeed Ur Rehman
- Department of Biochemistry, Faculty of Life Sciences, A.M. University, Aligarh, UP 202002, India
| | - M Moshahid Alam Rizvi
- Genome Biology Lab, Department of Biosciences, Jamia Millia Islamia, Central University, New Delhi 110025, India
| | - Mohammad Tabish
- Department of Biochemistry, Faculty of Life Sciences, A.M. University, Aligarh, UP 202002, India.
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Effect of Solvent Type on Total Phenolic Content and Free Radical Scavenging Activity of Black Tea and Herbal Infusions. FOOD ANAL METHOD 2015. [DOI: 10.1007/s12161-015-0270-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Kurhade AH, Waghmare JS. Effect of Banana Peel Oleoresin on Oxidative Stability of Sunflower and Soybean Oil. J FOOD PROCESS PRES 2014. [DOI: 10.1111/jfpp.12413] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Ankeeta H. Kurhade
- Department of Oils, Oleochemicals and Surfactant Technology; Institute of Chemical Technology; NP Marg, Matunga Mumbai 400 019 India
| | - Jyotsna S. Waghmare
- Department of Oils, Oleochemicals and Surfactant Technology; Institute of Chemical Technology; NP Marg, Matunga Mumbai 400 019 India
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Li T, Shen P, Liu W, Liu C, Liang R, Yan N, Chen J. Major Polyphenolics in Pineapple Peels and their Antioxidant Interactions. INTERNATIONAL JOURNAL OF FOOD PROPERTIES 2014. [DOI: 10.1080/10942912.2012.732168] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Clifford MN, van der Hooft JJJ, Crozier A. Human studies on the absorption, distribution, metabolism, and excretion of tea polyphenols. Am J Clin Nutr 2013; 98:1619S-1630S. [PMID: 24172307 DOI: 10.3945/ajcn.113.058958] [Citation(s) in RCA: 166] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Recent research on the bioavailability of flavan-3-ols after ingestion of green tea by humans is reviewed. Glucuronide, sulfate, and methyl metabolites of (epi)catechin and (epi)gallocatechin glucuronide reach peak nanomolar per liter plasma concentrations 1.6-2.3 h after intake, indicating absorption in the small intestine. The concentrations then decline, and only trace amounts remain 8 h after ingestion. Urinary excretion of metabolites over a 24-h period after green tea consumption corresponded to 28.5% of the ingested (epi)catechin and 11.4% of (epi)gallocatechin, suggesting higher absorption than that of most other flavonoids. The fate of (-)-epicatechin-3-O-gallate, the main flavan-3-ol in green tea, is unclear because it appears unmetabolized in low concentrations in plasma but is not excreted in urine. Possible enterohepatic recirculation of flavan-3-ols is discussed along with the impact of dose and other food components on flavan-3-ol bioavailability. Approximately two-thirds of the ingested flavan-3-ols pass from the small to the large intestine where the action of the microbiota results in their conversion to C-6-C-5 phenylvalerolactones and phenylvaleric acids, which undergo side-chain shortening to produce C-6-C-1 phenolic and aromatic acids that enter the bloodstream and are excreted in urine in amounts equivalent to 36% of flavan-3-ol intake. Some of these colon-derived catabolites may have a role in vivo in the potential protective effects of tea consumption. Although black tea, which contains theaflavins and thearubigins, is widely consumed in the Western world, there is surprisingly little research on the absorption and metabolism of these compounds after ingestion and their potential impact on health.
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Affiliation(s)
- Michael N Clifford
- Department of Nutritional Sciences, University of Surrey, Guildford, Surrey, United Kingdom (MNC); and the School of Medicine, College of Medical, Veterinary, and Life Sciences, University of Glasgow, Glasgow, United Kingdom (JJJvdH and AC)
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A multinational joint project on the evaluation of residual pesticide analysis in tea in the Asia Pacific region. Food Res Int 2013. [DOI: 10.1016/j.foodres.2012.10.039] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Simirgiotis MJ, Bórquez J, Schmeda-Hirschmann G. Antioxidant capacity, polyphenolic content and tandem HPLC–DAD–ESI/MS profiling of phenolic compounds from the South American berries Luma apiculata and L. chequén. Food Chem 2013; 139:289-99. [DOI: 10.1016/j.foodchem.2013.01.089] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2012] [Revised: 12/26/2012] [Accepted: 01/28/2013] [Indexed: 11/16/2022]
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Ramsaha S, Aumjaud BE, Neergheen-Bhujun VS, Bahorun T. Polyphenolic rich traditional plants and teas improve lipid stability in food test systems. Journal of Food Science and Technology 2013; 52:773-82. [PMID: 25694685 DOI: 10.1007/s13197-013-1060-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 01/31/2013] [Accepted: 06/04/2013] [Indexed: 11/28/2022]
Abstract
The deleterious effects of lipid autoxidation are of major concern to the food industry and can be prevented by food antioxidants. In this vein, the phenolic contents and antioxidant potential of traditional plants of Mauritius such as P. betle L. (Piperaceae), M. koenigii L. Sprengel. (Rutaceae), O. gratissimum L. (Lamiaceae), O. tenuiflorum L. (Lamiaceae), and commercially available Mauritian green and black teas were evaluated. Their ferric reducing antioxidant power (FRAP) were compared to that of butylated hydroxytoluene (BHT) with the following order of potency: BHT > "Natural" commercial green tea > "Black Label" commercial black tea > O. gratissimum > P. betle > O. tenuiflorum > M. koenigii. The trolox equivalent antioxidant capacity (TEAC) assay reflected a similar antioxidative order for BHT and "Natural" commercial green tea, with however P. betle, O. tenuiflorum and O. gratissimum exhibiting higher activities than "Black Label" commercial black tea and M. koenigii. Based on their potent antioxidant capacity, P. betle (0.2 % m/m) and O. tenuiflorum (0.2 % m/m) extracts, and green tea (0.1 % m/m) infusate were compared with BHT (0.02 % m/m) on their ability to retard lipid oxidation in unstripped sunflower oil and mayonnaise during storage at 40 °C. P. betle and green tea were more effective than BHT in both food systems. Moreover, odour evaluation by a sensory panel showed that the plant extracts and green tea infusate effectively delayed the development of rancid odours in unstripped sunflower oil and mayonnaise (p < 0.05).
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Affiliation(s)
- Srishti Ramsaha
- Department of Health Sciences, Faculty of Science and ANDI Centre of Excellence for Biomedical and Biomaterials Research, CBBR, Building, MSIRI, University of Mauritius, Réduit, Republic of Mauritius
| | - B Esha Aumjaud
- Department of Agricultural and Food Science, Faculty of Agriculture, University of Mauritius, Réduit, Republic of Mauritius
| | - Vidushi S Neergheen-Bhujun
- Department of Health Sciences, Faculty of Science and ANDI Centre of Excellence for Biomedical and Biomaterials Research, CBBR, Building, MSIRI, University of Mauritius, Réduit, Republic of Mauritius
| | - Theeshan Bahorun
- National Research Chair, ANDI Centre of Excellence for Biomedical and Biomaterials Research, CBBR, Building, MSIRI, University of Mauritius, Réduit, Republic of Mauritius
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Bahorun T, Luximon-Ramma A, Neergheen-Bhujun VS, Gunness TK, Googoolye K, Auger C, Crozier A, Aruoma OI. The effect of black tea on risk factors of cardiovascular disease in a normal population. Prev Med 2012; 54 Suppl:S98-102. [PMID: 22198621 DOI: 10.1016/j.ypmed.2011.12.009] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2011] [Revised: 05/13/2011] [Accepted: 12/08/2011] [Indexed: 11/29/2022]
Abstract
OBJECTIVES A prospective randomized controlled clinical trial determined the effect of Mauritian black tea consumption on fasting blood plasma levels of glucose, lipid profiles and antioxidant status in a normal population. METHODS The study group (71%) consumed 3 x 200 ml of black tea infusate/day for 12 weeks without additives followed by a 3 week wash-out. The control group (29%) consumed equivalent volume of hot water for same intervention period. RESULTS The tea used had high levels of gallic acid derivatives (50 ± 0.4 mg/L), flavan-3-ols (42 ± 2 mg/L), flavonols (32 ± 1 mg/L) and theaflavins (90 ± 1 mg/L). Daily 9 g supplementation of black tea infusate induced, in a normal population, a highly significant decrease of fasting serum glucose (18.4%; p<0.001) and triglyceride levels (35.8%; p<0.01), a significant decrease in LDL/HDL plasma cholesterol ratio (16.6%; p<0.05) and a non significant increase in HDL plasma cholesterol levels (20.3%), while a highly significant rise in plasma antioxidant propensity (FRAP: 418%; p<0.001) was noted . CONCLUSION Black tea consumed within a normal diet contributes to a decrease of independent cardiovascular risk factors and improves the overall antioxidant status in humans.
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Affiliation(s)
- Theeshan Bahorun
- ANDI Centre of Excellence for Biomedical and Biomaterials Research, CBBR Building, MSIRI, University of Mauritius, Réduit, Republic of Mauritius.
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Omar NF, Hassan SA, Yusoff UK, Abdullah NAP, Wahab PEM, Sinniah UR. Phenolics, flavonoids, antioxidant activity and cyanogenic glycosides of organic and mineral-base fertilized cassava tubers. Molecules 2012; 17:2378-87. [PMID: 22370524 PMCID: PMC6268411 DOI: 10.3390/molecules17032378] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2011] [Revised: 02/09/2012] [Accepted: 02/13/2012] [Indexed: 11/27/2022] Open
Abstract
A field study was conducted to determine the effect of organic and mineral-based fertilizers on phytochemical contents in the tubers of two cassava varieties. Treatments were arranged in a split plot design with three replicates. The main plot was fertilizer source (vermicompost, empty fruit bunch compost and inorganic fertilizer) and sub-plot was cassava variety (Medan and Sri Pontian). The amount of fertilizer applied was based on 180 kg K2O ha−1. The tubers were harvested and analyzed for total flavonoids, total phenolics, antioxidant activity and cyanogenic glucoside content. Total phenolic and flavonoid compounds were determined using the Folin-Ciocalteu assay and aluminium chloride colorimetric method, respectively. Different sources of fertilizer, varieties and their interactions were found to have a significant effect on phytochemical content. The phenolic and flavonoid content were significantly higher (p < 0.01) in the vermicompost treatment compared to mineral fertilizer and EFB compost. The total flavonoids and phenolics content of vermicompost treated plants were 39% and 38% higher, respectively, than those chemically fertilized. The antioxidant activity determined using the DPPH and FRAP assays were high with application of organic fertilizer. Cyanogenic glycoside levels were decreased with the application of organic fertilizer. Among the two types of compost, vermicompost resulted in higher nutritional value of cassava tubers. Medan variety with application of vermicompost showed the most promising nutritional quality. Since the nutritional quality of cassava can be improved by organic fertilization, organic fertilizer should be used in place of chemical fertilizer for environmentally sustainable production of better quality cassava.
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Affiliation(s)
- Nur Faezah Omar
- Department of Crop Science, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia; (N.F.O.); (N.A.P.A.); (P.E.M.W.); (U.S.)
| | - Siti Aishah Hassan
- Department of Crop Science, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia; (N.F.O.); (N.A.P.A.); (P.E.M.W.); (U.S.)
- Author to whom correspondence should be addressed; ; Tel.: +60-389-474-836; Fax: +60-389-474-918
| | - Umi Kalsom Yusoff
- Department of Biological Science, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia;
| | - Nur Ashikin Psyquay Abdullah
- Department of Crop Science, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia; (N.F.O.); (N.A.P.A.); (P.E.M.W.); (U.S.)
| | - Puteri Edaroyati Megat Wahab
- Department of Crop Science, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia; (N.F.O.); (N.A.P.A.); (P.E.M.W.); (U.S.)
| | - Uma Rani Sinniah
- Department of Crop Science, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia; (N.F.O.); (N.A.P.A.); (P.E.M.W.); (U.S.)
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Zhang Z, Lv G, Pan H, Fan L. Optimisation of the microwave-assisted extraction process for six phenolic compounds in Agaricus blazei murrill. Int J Food Sci Technol 2011. [DOI: 10.1111/j.1365-2621.2011.02802.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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39
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Chung DJ, Seong MK, Choi SH. Radiolytic synthesis of OH group functionalized fullerene structures and their biosensor application. J Appl Polym Sci 2011. [DOI: 10.1002/app.34225] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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40
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Karimi E, Jaafar HZ, Ahmad S. Phytochemical analysis and antimicrobial activities of methanolic extracts of leaf, stem and root from different varieties of Labisa pumila Benth. Molecules 2011; 16:4438-50. [PMID: 21623314 PMCID: PMC6264691 DOI: 10.3390/molecules16064438] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2011] [Revised: 05/02/2011] [Accepted: 05/04/2011] [Indexed: 11/18/2022] Open
Abstract
A local herb, Kacip Fatimah, is famous amongst Malay women for its uses in parturition; however, its phytochemical contents have not been fully documented. Therefore, a study was performed to evaluate the phenolics, flavonoids, and total saponin contents, and antibacterial and antifungal properties of the leaf, stem and root of three varieties of Labisia pumila Benth. Total saponins were found to be higher in the leaves of all three varieties, compared to the roots and stems. Leaves of var. pumila exhibited significantly higher total saponin content than var. alata and lanceolata, with values of 56.4, 43.6 and 42.3 mg diosgenin equivalent/g dry weight, respectively. HPLC analyses of phenolics and flavonoids in all three varieties revealed the presence of gallic acid, caffeic acid, rutin, and myricetin in all plant parts. Higher levels of flavonoids (rutin, quercitin, kaempferol) were observed in var. pumila compared with alata and lanceolata, whereas higher accumulation of phenolics (gallic acid, pyrogallol) was recorded in var. alata, followed by pumila and lanceolata. Antibacterial activities of leaf, stem and root extracts of all varieties determined against both Gram positive (Micrococcus luteus, Bacillus subtilis B145, Bacillus cereus B43, Staphylococcus aureus S1431) and Gram negative (Enterobacter aerogenes, Klebsiella pneumonia K36, Escherichia coli E256, Pseudomonas aeruginosa PI96) pathogens showed that crude methanolic extracts are active against these bacteria at low concentrations, albeit with lower antibacterial activity compared to kanamycin used as the control. Antifungal activity of methanolic extracts of all plant parts against Fusarium sp., Candida sp. and Mucor using the agar diffusion disc exhibited moderate to appreciable antifungal activities compared to streptomycin used as positive control.
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Affiliation(s)
- Ehsan Karimi
- of Crop Science, Faculty of Agriculture, Universiti Putra Malaysia, Serdang, Selangor 43400, Malaysia
| | - Hawa Z.E. Jaafar
- of Crop Science, Faculty of Agriculture, Universiti Putra Malaysia, Serdang, Selangor 43400, Malaysia
| | - Sahida Ahmad
- Department of Biochemistry, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang, Selangor 43400, Malaysia
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Kim SK, Kwen HD, Choi SH. Fabrication of a microbial biosensor based on QD-MWNT supports by a one-step radiation reaction and detection of phenolic compounds in red wines. SENSORS (BASEL, SWITZERLAND) 2011; 11:2001-12. [PMID: 22319395 PMCID: PMC3274030 DOI: 10.3390/s110202001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/08/2010] [Revised: 01/04/2011] [Accepted: 02/06/2011] [Indexed: 11/16/2022]
Abstract
An Acaligense sp.-immobilized biosensor was fabricated based on QD-MWNT composites as an electron transfer mediator and a microbe immobilization support by a one-step radiation reaction and used for sensing phenolic compounds in commercial red wines. First, a quantum dot-modified multi-wall carbon nanotube (QD-MWNT) composite was prepared in the presence of MWNT by a one-step radiation reaction in an aqueous solution at room temperature. The successful preparation of the QD-MWNT composite was confirmed by XPS, TEM, and elemental analysis. Second, the microbial biosensor was fabricated by immobilization of Acaligense sp. on the surface of the composite thin film of a glassy carbon (GC) electrode, which was prepared by a hand casting method with a mixture of the previously obtained composite and Nafion solution. The sensing ranges of the microbial biosensor based on CdS-MWNT and Cu(2)S-MWNT supports were 0.5-5.0 mM and 0.7-10 mM for phenol in a phosphate buffer solution, respectively. Total concentration of phenolic compounds contained in commercial red wines was also determined using the prepared microbial immobilized biosensor.
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Affiliation(s)
- Seul-Ki Kim
- Department of Chemistry, Hannam University, Daejeon 305-811, Korea; E-Mails: (S.-K.K.); (H.-D.K.)
| | - Hai-Doo Kwen
- Department of Chemistry, Hannam University, Daejeon 305-811, Korea; E-Mails: (S.-K.K.); (H.-D.K.)
| | - Seong-Ho Choi
- Department of Chemistry, Hannam University, Daejeon 305-811, Korea; E-Mails: (S.-K.K.); (H.-D.K.)
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Rodríguez-Ramiro I, Martín MÁ, Ramos S, Bravo L, Goya L. Comparative effects of dietary flavanols on antioxidant defences and their response to oxidant-induced stress on Caco2 cells. Eur J Nutr 2010; 50:313-22. [DOI: 10.1007/s00394-010-0139-2] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2010] [Accepted: 10/15/2010] [Indexed: 11/29/2022]
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Chen LJ, Lu YF, Chien JT, Chen BH. Formation and inhibition of cholesterol oxidation products in tea-leaf eggs during marinating. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2010; 58:10467-10474. [PMID: 20828157 DOI: 10.1021/jf102487j] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The objectives of this study were to develop a GC-MS method for determination of cholesterol oxidation products (COPs) in tea-leaf eggs and study the formation and inhibition of COPs as affected by heating time and various ingredients in marinated juice. The various COPs in egg and juice samples were extracted by a solvent system of chloroform/methanol (2:1, v/v), followed by purification using a silica cartridge and GC-MS for subsequent separation and quantitation, with high recovery ranges from 85.9 to 98.3% and from 83.1-100.1% being obtained for egg and juice, respectively. 5α-Cholestane was shown to be an appropriate internal standard for quantitation. A total of five COPs, including 7-keto, 5,6 β-EP, 7α-OH, 7β-OH, and triol, were formed in tea-leaf eggs during marinating, but not in marinated juice. A peak level of total COPs (2272.2 ng/g) was generated in tea-leaf eggs after 24 h of heating, but reduced to 1068.2 ng/g in 48 h. Both the total phenolic and flavonoid compounds in tea-leaf eggs showed a time-dependent increase during marinating and so did the pH and browning index in tea-leaf eggs and juice. The incorporation of soy sauce or black tea leaf into juice was effective in inhibiting COPs formation in tea-leaf eggs, with the latter being more pronounced than the former. The formation of Maillard reaction products during marinating as well as the presence of total phenolic and total flavonoid in black tea leaf was mainly responsible for COPs reduction in tea-leaf eggs.
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Affiliation(s)
- L J Chen
- Department of Food Science, Fu Jen University, Taipei 242, Taiwan
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Karimi E, Oskoueian E, Hendra R, Jaafar HZ. Evaluation of Crocus sativus L. stigma phenolic and flavonoid compounds and its antioxidant activity. Molecules 2010; 15:6244-56. [PMID: 20877220 PMCID: PMC6257777 DOI: 10.3390/molecules15096244] [Citation(s) in RCA: 122] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2010] [Revised: 07/05/2010] [Accepted: 08/10/2010] [Indexed: 11/16/2022] Open
Abstract
Saffron (Crocus sativus L.) belongs to the Iridaceae family. The stigma of saffron has been widely used as spice, medicinal plant, and food additive in the Mediterranean and Subtropical countries. Recently, attention has been paid to the identification of new sources of safe natural antioxidants for the food industry. The antioxidant activities of spices are mainly attributed to their phenolic and flavonoid compounds. Saffron is one of the spices believed to possess antioxidant properties, but information on its antioxidant activity and phenolic, flavonoids compound are rather limited, therefore this research was carried out to evaluate the antioxidant activity of saffron stigmas extracted with different solvents. The phenolic and flavonoid compounds of saffron were also examined using reversed phase (RP)-HPLC. Results showed that saffron stigma possess antioxidant activity. The free radical scavenging and ferric reducing power activities were higher for the methanolic extract of saffron stigma at a concentration of 300 μg/mL, with values of 68.2% and 78.9%, respectively, as compared to the corresponding boiling water and ethanolic extracts, but the activities were lower than those of antioxidant standards such as BHT and α-tocopherol. The obtained total phenolics value for methanolic saffron extract was 6.54 ± 0.02 mg gallic acid equivalent (GAE)/g dry weight (DW), and for total flavonoids, 5.88 ± 0.12 mg rutin equivalent/g DW, which were also higher than values obtained from the ethanolic and boiling water extracts. In addition, the RP-HPLC analyses indicated the presence of gallic acid and pyrogallol as two bioactive compounds. In summary, saffron stigmas showed antioxidant activity and methanol appeared to be the best solvent to extract the active components, among which the presence of gallic acid and pyrogallol might contribute towards the stigma's antioxidant properties. Hence, saffron stigma could be applied as a natural antioxidant source for industrial purposes.
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Affiliation(s)
- Ehsan Karimi
- Department of Crop Science, Faculty of Agriculture, Universiti Putra Malaysia (UPM), 43400 UPM Serdang, Selangor, Malaysia
| | - Ehsan Oskoueian
- Department of Microbiology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia (UPM), 43400 UPM Serdang, Selangor, Malaysia
| | - Rudi Hendra
- Department of Biochemistry, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia (UPM), 43400 UPM Serdang, Selangor, Malaysia
| | - Hawa Z.E. Jaafar
- Department of Crop Science, Faculty of Agriculture, Universiti Putra Malaysia (UPM), 43400 UPM Serdang, Selangor, Malaysia
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NING P, GONG C, ZHANG Y, GUO K. La, Ce, Pr, Nd and Sm concentrations in Pu'er tea of Yunnan, China. J RARE EARTH 2010. [DOI: 10.1016/s1002-0721(09)60170-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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46
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Ramful D, Bahorun T, Bourdon E, Tarnus E, Aruoma OI. Bioactive phenolics and antioxidant propensity of flavedo extracts of Mauritian citrus fruits: potential prophylactic ingredients for functional foods application. Toxicology 2010; 278:75-87. [PMID: 20100535 DOI: 10.1016/j.tox.2010.01.012] [Citation(s) in RCA: 126] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2009] [Revised: 01/11/2010] [Accepted: 01/18/2010] [Indexed: 11/25/2022]
Abstract
The flavedo extracts of twenty-one varieties of citrus fruits (oranges, satsumah, clementine, mandarins, tangor, bergamot, lemon, tangelos, kumquat, calamondin and pamplemousses) grown in Mauritius were examined for their total phenolic, flavonoid and vitamin C contents and antioxidant activities. Total phenolics correlated strongly with the trolox equivalent antioxidant capacity (TEAC), ferric reducing antioxidant capacity (FRAP) and hypochlorous acid (HOCl) scavenging activity assays (r > 0.85). Based on their antioxidant activities in these three assays nine citrus fruits namely, one orange, clementine, tangor and pamplemousse variety, two tangelo varieties and three mandarin varieties, were further characterized for their flavanone, flavonol and flavone levels by HPLC and their antioxidant activities were assessed by the copper-phenanthroline and iron chelation assays. The flavanone, hesperidin, was present at the highest concentrations in all flavedo extracts except for pamplemousses where it was not detected. Contents in hesperidin ranged from 83 ± 0.06 to 234 ± 1.73 mg/g FW. Poncirin, didymin, diosmin, isorhoifolin and narirutin were also present in all extracts whereas naringin was present only in one mandarin variety. The nine flavedo extracts exhibited good DNA protecting ability in the cuphen assay with IC₅₀ values ranging from 6.3 ± 0.46 to 23.0 ± 0.48 mg FW/mL. Essentially the flavedos were able to chelate metal ions however, tangor was most effective with an IC₅₀ value of 9.1 ± 0.08 mg FW/mL. The flavedo extracts of citrus fruits represent a significant source of phenolic antioxidants with potential prophylactic properties for the development of functional foods.
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Affiliation(s)
- Deena Ramful
- Department of Agricultural and Food Science, Faculty of Agriculture, University of Mauritius, Réduit, Mauritius
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Serrano J, Puupponen-Pimiä R, Dauer A, Aura AM, Saura-Calixto F. Tannins: current knowledge of food sources, intake, bioavailability and biological effects. Mol Nutr Food Res 2009; 53 Suppl 2:S310-29. [PMID: 19437486 DOI: 10.1002/mnfr.200900039] [Citation(s) in RCA: 445] [Impact Index Per Article: 29.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Tannins are a unique group of phenolic metabolites with molecular weights between 500 and 30 000 Da, which are widely distributed in almost all plant foods and beverages. Proanthocyanidins and hydrolysable tannins are the two major groups of these bioactive compounds, but complex tannins containing structural elements of both groups and specific tannins in marine brown algae have also been described. Most literature data on food tannins refer only to oligomeric compounds that are extracted with aqueous-organic solvents, but a significant number of non-extractable tannins are usually not mentioned in the literature. The biological effects of tannins usually depend on their grade of polymerisation and solubility. Highly polymerised tannins exhibit low bioaccessibility in the small intestine and low fermentability by colonic microflora. This review summarises a new approach to analysis of extractable and non-extractable tannins, major food sources, and effects of storage and processing on tannin content and bioavailability. Biological properties such as antioxidant, antimicrobial and antiviral effects are also described. In addition, the role of tannins in diabetes mellitus has been discussed.
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Affiliation(s)
- José Serrano
- Universidad Complutense de Madrid, Depto. Nutrición y Bromatología I, Madrid, Spain
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Reyes-Munguía A, Azúara-Nieto E, Beristain CI, Cruz-Sosa F, Vernon-Carter EJ. Propiedades antioxidantes del maguey morado (Rhoeo discolor) Purple maguey (Rhoeo discolor) antioxidant properties. CYTA - JOURNAL OF FOOD 2009. [DOI: 10.1080/19476330903010177] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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50
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Fabrication of a Multi-Walled Nanotube (MWNT) Ionic Liquid Electrode and Its Application for Sensing Phenolics in Red Wines. SENSORS 2009; 9:6701-14. [PMID: 22399973 PMCID: PMC3290462 DOI: 10.3390/s90906701] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2009] [Revised: 07/14/2009] [Accepted: 08/18/2009] [Indexed: 11/16/2022]
Abstract
A multi-walled nanotube (MWNT) ionic liquid was prepared by the immobilization of 1-butylimidazole bromide onto an epoxy group on a poly(glycidyl methacrylate)-grafted MWNT, which was synthesized by radiation-induced graft polymerization of glycidyl methacrylate onto MWNT in an aqueous solution. Subsequently, a MWNT ionic liquid electrode was fabricated by hand-casting MWNT ionic liquid, tyrosinase, and chitosan solution as a binder on indium tin oxide (ITO) glass. The sensing ranges of the MWNT ionic liquid electrode with immobilized tyrosinase was in the range of 0.01-0.08 mM in a phosphate buffer solution. The optimal conditions such as pH, temperature, and effects of different phenolic compounds were determined. The total phenolic compounds of three commercial red wines were also determined on the tyrosinase-immobilized biosensor.
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