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https://www.readbyqxmd.com/read/28938516/naturally-occurring-anthocyanin-cyanidin-3-rutinoside-possesses-inherent-vasorelaxant-actions-and-prevents-methylglyoxal-induced-vascular-dysfunction-in-rat-aorta-and-mesenteric-arterial-bed
#1
Thavaree Thilavech, Mahinda Y Abeywardena, Michael Adams, Julie Dallimore, Sirichai Adisakwattana
Cyanidin-3-rutinoside (C3R) possesses anti-oxidant, anti-inflammatory and anti-glycation properties. Methylglyoxal (MG), a highly reactive dicarbonyl aldehyde by-product of glycolysis, is a precursor of advanced glycation end products and contributes to vascular dysfunction, particularly during hyperglycemia. We investigated the possible inherent vasoactivity of C3R, and its effectiveness against MG-induced vascular abnormalities in isolated blood vessel preparations from male Wistar Kyoto rat. C3R induced vasorelaxation concentration-dependently in aortic rings (92% maximum relaxation; EC50: 2...
September 18, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28936215/omics-approaches-for-understanding-grapevine-berry-development-regulatory-networks-associated-with-endogenous-processes-and-environmental-responses
#2
REVIEW
Alejandra Serrano, Carmen Espinoza, Grace Armijo, Claudio Inostroza-Blancheteau, Evelyn Poblete, Carlos Meyer-Regueiro, Anibal Arce, Francisca Parada, Claudia Santibáñez, Patricio Arce-Johnson
Grapevine fruit development is a dynamic process that can be divided into three stages: formation (I), lag (II), and ripening (III), in which physiological and biochemical changes occur, leading to cell differentiation and accumulation of different solutes. These stages can be positively or negatively affected by multiple environmental factors. During the last decade, efforts have been made to understand berry development from a global perspective. Special attention has been paid to transcriptional and metabolic networks associated with the control of grape berry development, and how external factors affect the ripening process...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28934910/extracts-of-black-and-brown-rice-powders-improve-hepatic-lipid-accumulation-via-the-activation-of-ppar%C3%AE-in-obese-and-diabetic-model-mice
#3
Angelina Dr Felix, Nobuyuki Takahashi, Mami Takahashi, Rie Katsumata-Tsuboi, Ryo Satoh, Teoh Soon Hui, Katsuhiro Miyajima, Dai Nakae, Hirofumi Inoue, Mariko Uehara
Rice powder extract (RPE) from black and brown rice (Oryza sativa L. indica) improves hepatic lipid accumulation in obese and diabetic model mice via peroxisomal fatty acid oxidation. RPE showed PPARα agonistic activity which did not differ between black and brown RPE despite a higher anthocyanin content in black RPE.
September 22, 2017: Bioscience, Biotechnology, and Biochemistry
https://www.readbyqxmd.com/read/28934660/antimicrobial-activity-of-some-natural-extracts-encapsulated-within-silica-matrices
#4
Alexandra Duprates Steiner, Alvaro Vargas, Nei Fronza, Adriano Brandelli, João Henrique Zimnoch Dos Santos
Natural extracts (anthocyanins, tannin, anatto, curcuma and olive leaf extracts) were encapsulated within a silica network by acid or base-catalyzed sol-gel methods. The nominal encapsulated contents were between 2.5 and 50wt.-%. The resulting materials were characterized by Fourier transform infrared spectroscopy, diffuse reflectance in the UV region, nitrogen adsorption/desorption porosimetry and small angle X-ray scattering. Encapsulated anthocyanin and tannin afforded inhibition zones between 9-21mm towards Staphylococcus aureus, Escherichia coli, Bacillus cereus, Candida sp...
September 12, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28933917/grape-and-wine-polymeric-polyphenols-their-importance-in-enology
#5
Lingxi Li, Baoshan Sun
Phenolic compounds are important constituents of red wine, contributing to its sensory properties and antioxidant activity. Owing to the diversity and structural complexity, study of these compounds was mainly limited, during the last three decades, on their low-molecular-mass compounds or simple phenolic compounds. Only in recent years, much attention has been paid to highly polymerized polyphenols in grape and red wines. The reason for this is largely due to the development of analytical techniques, especially those of HPLC-ESI-MS, permitting the structural characterization of highly polymerized polyphenols...
September 21, 2017: Critical Reviews in Food Science and Nutrition
https://www.readbyqxmd.com/read/28933419/the-cardiovascular-effects-of-cocoa-polyphenols-an-overview
#6
REVIEW
Ana Clara Aprotosoaie, Anca Miron, Adriana Trifan, Vlad Simon Luca, Irina-Iuliana Costache
Cocoa is a rich source of high-quality antioxidant polyphenols. They comprise mainly catechins (29%-38% of total polyphenols), anthocyanins (4% of total polyphenols) and proanthocyanidins (58%-65% of total polyphenols). A growing body of experimental and epidemiological evidence highlights that the intake of cocoa polyphenols may reduce the risk of cardiovascular events. Beyond antioxidant properties, cocoa polyphenols exert blood pressure lowering activity, antiplatelet, anti-inflammatory, metabolic and anti-atherosclerotic effects, and also improve endothelial function...
December 17, 2016: Diseases (Basel)
https://www.readbyqxmd.com/read/28931627/the-nitrate-transporter-family-protein-npf8-6-controls-the-n-fixing-nodule-activity
#7
Vladimir Totev Valkov, Ludovico Martins Alves, Stefano Sol, Mélanie Noguero, Sophie Léran, Benoit Lacombe, Maurizio Chiurazzi
N-fixing nodules are new organs formed on legume roots as result of the beneficial interaction with soil bacteria, rhizobia. The nodule functioning is still a poorly characterized step of the symbiotic interaction as only few of the genes induced in N-fixing nodules have been functionally characterized. We present here the characterization of the member of the Lotus japonicus nitrate transporter 1/peptide transporter family LjNPF8.6. The phenotypic characterization carried out in independent L. japonicus LORE1 insertion lines indicates a positive role of LjNPF8...
September 20, 2017: Plant Physiology
https://www.readbyqxmd.com/read/28931464/the-interactive-effects-of-diclofop-methyl-and-silver-nanoparticles-on-arabidopsis-thaliana-growth-photosynthesis-and-antioxidant-system
#8
Xingxing Li, Mingjing Ke, Meng Zhang, W J G M Peijnenburg, Xiaoji Fan, Jiahui Xu, Zhenyan Zhang, Tao Lu, Zhengwei Fu, Haifeng Qian
Diclofop-methyl (DM), a common post-emergence herbicide, is frequently used in agricultural production. Silver nanoparticles (AgNPs) are one of the most widely used nanoparticles, and as such, have been detected and monitored in several environmental systems. Here we investigated the interactive effects of DM and AgNPs on the physiological morphology, photosynthesis and antioxidant system of Arabidopsis thaliana. Our results demonstrated that a 1.0 mg/L DM treatment had no significant effect on the fresh weight of plant shoots and the content of total chlorophyll and anthocyanin...
September 18, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28928535/effects-of-concentration-method-and-storage-time-on-some-bioactive-compounds-and-color-of-jujube-ziziphus-jujuba-var-vulgaris-concentrate
#9
Najmeh Shams Najafabadi, Mohammad Ali Sahari, Mohsen Barzegar, Zohreh Hamidi Esfahani
Jujube extract was concentrated by various heating methods including vacuum, microwave and conventional heating. The effect of concentration methods and storage time (for 90 days at 4 °C) on total phenolic and total monomeric anthocyanin contents, individual anthocyanins, individual organic acids, and color values of jujube concentrate was investigated separately. The desired level of concentration (65.0 °Brix) was achieved in 45, 96 and 117 min by the microwave, vacuum and conventional heating methods, respectively...
August 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28928529/antioxidant-properties-and-phenolic-profile-characterization-by-lc-ms-ms-of-selected-tunisian-pomegranate-peels
#10
Mouna Abid, Héla Yaich, Salma Cheikhrouhou, Ibtihel Khemakhem, Mohamed Bouaziz, Hamadi Attia, M A Ayadi
Antioxidant contents and activities of different extracts from four Tunisian pomegranate peels, locally called "Acide", "Gabsi", "Nebli" and "Tounsi", were studied. Peels samples were extracted with three solvents (water, ethanol and acetone). For each extract, the total phenol contents and antioxidant activity were evaluated. The highest values of polyphenol, tannins, flavonoids and anthocyanins were recorded in the acetone extract of Acide ecotype with 304.6 mg gallic acid equivalent/g; 292.23 mg gallic acid equivalent/g; 15...
August 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28928526/the-growing-season-impacts-the-accumulation-and-composition-of-flavonoids-in-grape-skins-in-two-crop-a-year-viticulture
#11
Lei Zhu, Yu Huang, Yali Zhang, Changmou Xu, Jiang Lu, Ying Wang
The influence of growing season (winter vs. summer) on the flavonoid accumulation and composition was studied in the skins of three grape cultivars for two consecutive years under a two-crop-a-year viticulture practice in Southwest China. The total anthocyanin, flavonol and flavan-3-ol contents in winter berry skins were significantly higher than those in summer berry skins for 'Kyoho' and 'Muscat Hamburg'. Reversely, the content of anthocyanin in 'NW196' winter berry was lower than summer berry. However, the percentage of diglycosylated, trihydroxylated, methylated, and acylated anthocyanins, trihydroxylated and methylated flavonols, and flavan-3-ol polymers were higher in the summer berry skins than the winter berry skins among all the three grape cultivars...
August 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28928519/measurement-of-ripening-of-raspberries-rubus-idaeus-l-by-near-infrared-and-colorimetric-imaging-techniques
#12
Francisco J Rodríguez-Pulido, María Gil-Vicente, Belén Gordillo, Francisco J Heredia, M Lourdes González-Miret
This work includes the evaluation of 168 samples of raspberries 'Glen Lyon', representing whole maturation period, by colorimetric and near infrared imaging techniques, as well as the quantification of total phenols, total anthocyanins and antioxidant activity by chemical methods. Samples showed significant differences depending on the maturation stage using CIELAB colour parameters and total anthocyanins content. The application of partial least squares regression allowed predicting the chemical features from image analysis data, with coefficients of determination (R(2)) up to 0...
August 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28926799/iron-deficiency-stimulates-anthocyanin-accumulation-in-grapevine-apical-leaves
#13
Leila Caramanico, Laura Rustioni, Gabriella De Lorenzis
Iron chlorosis is a diffuse disorder affecting Mediterranean vineyards. Beside the commonly described symptom of chlorophyll decrease, an apex reddening was recently observed. Secondary metabolites, such as anthocyanins, are often synthetized to cope with stresses in plants. The present work aimed to evaluate grapevine responses to iron deficiency, in terms of anthocyanin metabolism (reflectance spectrum, total anthocyanin content, HPLC profile and gene expression) in apical leaves of Cabernet sauvignon and Sangiovese grown in hydroponic conditions...
September 9, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28926798/cloning-and-expression-profiling-of-the-pacsnrk2-and-pacpp2c-gene-families-during-fruit-development-aba-treatment-and-dehydration-stress-in-sweet-cherry
#14
Xinjie Shen, Xiao Guo, Di Zhao, Qiang Zhang, Yuzhuang Jiang, Yantao Wang, Xiang Peng, Yan Wei, Zefeng Zhai, Wei Zhao, Tianhong Li
Plant SNF1-related protein kinase 2 (SnRK2) and protein phosphatase 2C (PP2C) family members are core components of the ABA signal transduction pathway. SnRK2 and PP2C proteins have been suggested to play crucial roles in fruit ripening and improving plant tolerance to drought stress, but supporting genetic information has been lacking in sweet cherry (Prunus avium L.). Here, we cloned six full-length SnRK2 genes and three full-length PP2C genes from sweet cherry cv. Hong Deng. Quantitative PCR analysis revealed that PacSnRK2...
September 6, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28924499/genome-wide-identification-of-the-mads-box-transcription-factor-family-in-pear-pyrus-bretschneideri-reveals-evolution-and-functional-divergence
#15
Runze Wang, Meiling Ming, Jiaming Li, Dongqing Shi, Xin Qiao, Leiting Li, Shaoling Zhang, Jun Wu
MADS-box transcription factors play significant roles in plant developmental processes such as floral organ conformation, flowering time, and fruit development. Pear (Pyrus), as the third-most crucial temperate fruit crop, has been fully sequenced. However, there is limited information about the MADS family and its functional divergence in pear. In this study, a total of 95 MADS-box genes were identified in the pear genome, and classified into two types by phylogenetic analysis. Type I MADS-box genes were divided into three subfamilies and type II genes into 14 subfamilies...
2017: PeerJ
https://www.readbyqxmd.com/read/28919902/expression-differences-of-pigment-structural-genes-and-transcription-factors-explain-flesh-coloration-in-three-contrasting-kiwifruit-cultivars
#16
Yanfei Liu, Bin Zhou, Yingwei Qi, Xin Chen, Cuihua Liu, Zhande Liu, Xiaolin Ren
Fruits of kiwifruit cultivars (Actinidia chinensis and A. deliciosa) generally have green or yellow flesh when ripe. A small number of genotypes have red flesh but this coloration is usually restricted to the inner pericarp. Three kiwifruit cultivars having red ('Hongyang'), or yellow ('Jinnong-2'), or green ('Hayward') flesh were investigated for their color characteristics and pigment contents during development and ripening. The results show the yellow of the 'Jinnong-2' fruit is due to the combined effects of chlorophyll degradation and of beta-carotene accumulation...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28917907/microencapsulation-of-eugenia-uniflora-l-juice-by-spray-drying-using-fructans-with-different-degrees-of-polymerisation
#17
R I Ortiz-Basurto, M E Rubio-Ibarra, J A Ragazzo-Sanchez, C I Beristain, M Jiménez-Fernández
The objective of this work was to microencapsulate pitanga (Eugenia uniflora L.) juice by spray drying, using High Performance Agave Fructans (HPAF) and High Degree of Polymerisation Agave Fructans (HDPAF) and maltodextrin (MD), respectively, as the wall materials. The physicochemical and antioxidant properties of the capsules during storage at various temperatures were evaluated. The microparticles developed using fructans HPAF and HDPAF, exhibited similar physicochemical and flow properties to those presented by the microparticles prepared with MD...
November 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28916569/effects-of-anthocyanins-on-cardiometabolic-health-a-systematic-review-and-meta-analysis-of-randomized-controlled-trials
#18
REVIEW
LiPing Yang, WenHua Ling, ZhiCheng Du, YuMing Chen, Dan Li, ShiZhou Deng, ZhaoMin Liu, LiLi Yang
Numerous clinical trials have examined the role of anthocyanins on cardiometabolic health, but their effects have not been quantitatively synthesized and systematically evaluated. The aim of our study was to conduct a systematic review and meta-analysis of randomized controlled trials (RCTs) assessing the effects of anthocyanins on glycemic regulation and lipid profiles in both healthy populations and those with cardiometabolic diseases. The MEDLINE, EMBASE, Cochrane database, OVID EBM Reviews, and clinicaltrials...
September 2017: Advances in Nutrition
https://www.readbyqxmd.com/read/28915504/in-situ-optical-properties-of-foliar-flavonoids-implication-for-non-destructive-estimation-of-flavonoid-content
#19
Anatoly Gitelson, Olga Chivkunova, Tatiana Zhigalova, Alexei Solovchenko
Flavonoids are a ubiquitous multifunctional group of phenolics of paramount importance for the terrestrial plants involved in protection from biotic and abiotic stresses, color and chemical signaling and other functions. Deciphering of in situ absorption of foliar Flv is important but was thought to be impossible due to a strong overlap with other pigments, complex in situ chemistry of Flv and sophisticated leaf optics. We deduced in situ absorbance of foliar Flv and introduced a concept of specific absorbance spectrum indicative of each pigment group contribution to light absorption and provided a rationale for the choice of spectral bands for non-destructive assessment of Flv in leaves with variable content of other pigments including anthocyanins...
September 1, 2017: Journal of Plant Physiology
https://www.readbyqxmd.com/read/28911647/characterization-and-hepatoprotective-activity-of-anthocyanins-from-purple-sweet-potato-ipomoea-batatas-l-cultivar-eshu-no-8
#20
Lin Wang, Ying Zhao, Qing Zhou, Chun-Li Luo, Ai-Ping Deng, Zi-Cheng Zhang, Jiu-Liang Zhang
The hepatoprotective activity of anthocyanin-rich purple sweet potato extract (APSPE) was demonstrated. Sixty mice were randomly divided into six groups: control group [without carbon tetrachloride (CCl4) or APSPE]; model group (with CCl4 only); positive control group (50 mg/kg body weight silymarin); low-dose group (100 mg/kg body weight APSPE); medium-dose group (200 mg/kg body weight APSPE); and high-dose group (400 mg/kg body weight APSPE). After 10 days intragastric administration of the respective supplements, the mice in all groups except control were injected intraperitoneally with CCl4 (0...
July 2017: Journal of Food and Drug Analysis
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