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Dario Donno, Maria Gabriella Mellano, Marta De Biaggi, Isidoro Riondato, Ernest Naivonirina Rakotoniaina, Gabriele Loris Beccaro
European bird cherry ( Prunus padus L.) has been known since the Middle Ages for its medical/food use and high health-promoting value. This study aimed to assess the potential of these fruits as a source of bioactive compounds through the characterization of its physicochemical traits, nutraceutical properties, phytochemical composition via HPLC fingerprint, and antioxidant capacity. Fully ripened fruits of Prunus padus L. (Colorata cv) were collected in mid-July 2017 in Chieri, north-western Italy. The TPC (194...
March 22, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
Vania Mattoso Ribeiro, Teresa Palmisciano Bede, Gabrielle S Rocha, Sergio Barroso, Samuel Valença, Vilma Blondet de Azeredo
BACKGROUND: High fat diets have been implicated in the generation of reactive oxygen species (ROS). Polyphenols from grapes may reduce ROS and restore oxidative balance. The aim of this study is to investigate the antioxidant properties of high polyphenols beverages associated with a high fat diet in enzymatic and non-enzymatic antioxidant activity. MATERIAL AND METHODS: Fifty female rats were divided into five groups: a) control group (CG) - control diet (4% fat); b) high fat diet group (HFD) - high fat diet (20% fat); c) grape juice group (GJ) - grape juice (15 ml/day) + high fat diet; d) red wine group (RW) - red wine (10 ml/day) + high fat diet; and e) resveratrol solution group (RS) - resveratrol solution (15 ml/day) + high fat diet...
November 24, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
Dino Miraglia, David Ranucci, Massimo Trabalza-Marinucci, Gabriele Acuti, Claudio Forte, Michela Codini, Rossana Roila, Raffaella Branciari
This study aimed at evaluating the effect of Oregano vulgaris extract supplementation of heavy pig diet on the microbiological, chemical-physical and sensory characteristics of Fabriano salami. Fabriano salamis were produced processing meat derived from pigs belonging to two dietary groups of 16 pigs each: CTRL group fed a commercial pelleted feed, and OR group fed the CTRL diet integrated with 0.2% of oregano extract. Ten salamis per group were collected at 0, 7, 20 and 45 days of ripening and analysed for total viable count, enumeration of Enterobacteriaceae , Enterococcus spp, coagulase negative and positive staphylococci, Lactobacillus spp...
October 20, 2017: Italian Journal of Food Safety
Luca Giacomelli, Stefano Togni, Martino Meneghin, Roberto Eggenhöffner, Giada Maramaldi
Purpose: The purpose of this in vivo study is to evaluate the acute clinical application of a multicomponent powder (Vitachelox® ), including three naturally occurring standardized extracts rich in polyphenols (grape seed extract, green tea extract, oak wood/bark extract), on healthy volunteers by measuring prevention of any metal deposition within the stratum corneum (SC) following a 6-h exposure period in a polluted environment. Patients and methods: In this in vivo study, we evaluated the skin protective activity of the multicomponent powder formulated in a base emulsion compared to a relevant placebo cream...
2018: Clinical, Cosmetic and Investigational Dermatology
Noha M Badawi, Mahmoud H Teaima, Khalid M El-Say, Dalia A Attia, Mohamed A El-Nabarawi, Mohey M Elmazar
Background: Pomegranate extract (PE) is a natural product with potent antioxidant and anticancer activity because of its polyphenols content. The main purpose of this study was to maximize the PE chemotherapeutic efficacy by loading it in an optimized solid lipid nanoparticles (SLNs) formula. Materials and methods: The influence of independent variables, which were lipid concentration (X1 ), surfactant concentration (X2 ) and cosurfactant concentration (X3 ), on dependent ones, which were particle size (Y1 ), polydispersity index (Y2 ), zeta potential (Y3 ), entrapment efficiency (Y4 ) and cumulative % drug release (Y5 ), were studied and optimized using the Box-Behnken design...
2018: International Journal of Nanomedicine
Gustavo R Velderrain-Rodríguez, Heriberto Torres-Moreno, Mónica A Villegas-Ochoa, J Fernando Ayala-Zavala, Ramón E Robles-Zepeda, Abraham Wall-Medrano, Gustavo A González-Aguilar
Mango "Ataulfo" peel is a rich source of polyphenols (PP), with antioxidant and anti-cancer properties; however, it is unknown whether such antiproliferative activity is related to PP's antioxidant activity. The content (HPLC-DAD), antioxidant (DPPH, FRAP, ORAC), and antiproliferative activities (MTT) of free (FP) and chemically-released PP from mango 'Ataulfo' peel after alkaline (AKP) and acid (AP) hydrolysis, were evaluated. AKP fraction was higher (µg/g DW) in gallic acid (GA; 23,816 ± 284) than AP (5610 ± 8) of FR (not detected) fractions...
March 19, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
Fabio Galeotti, Francesca Maccari, Alfredo Fachini, Nicola Volpi
Different products from a unique propolis extract obtained by using various solvents such as hydroalcoholic, glycolic (98% propylene glycol), and glyceric solutions, and oil, as well as in powder form, named ESIT12, were prepared. The molecular composition of the different preparations was evaluated and their antioxidant activity determined. All the preparations showed a quite similar polyphenol composition and comparable percentage even if ESIT12 was found to be richer in phenolic acids (caffeic, coumaric, ferulic, and isoferulic)...
March 19, 2018: Foods (Basel, Switzerland)
Darshan S Kelley, Yuriko Adkins, Kevin D Laugero
Increased oxidative stress contributes to development and progression of several human chronic inflammatory diseases. Cherries are a rich source of polyphenols and vitamin C which have anti-oxidant and anti-inflammatory properties. Our aim is to summarize results from human studies regarding health benefits of both sweet and tart cherries, including products made from them (juice, powder, concentrate, capsules); all referred to as cherries here. We found 29 (tart 20, sweet 7, unspecified 2) published human studies which examined health benefits of consuming cherries...
March 17, 2018: Nutrients
María Figueiredo-González, Patricia Reboredo-Rodríguez, Carmen González-Barreiro, Alegría Carrasco-Pancorbo, Jesús Simal-Gándara, Beatriz Cancho-Grande
The increasing interest in the Mediterranean diet is based on the protective effects against several diseases, including neurodegenerative disorders. Polyphenol-rich functional foods have been proposed to be unique supplementary and nutraceutical treatments for these disorders. Extra-virgin olive oils (EVOOs) obtained from 'Brava' and 'Mansa', varieties recently identified from Galicia (northwestern Spain), were selected for in vitro screening to evaluate their capacity to inhibit key enzymes involved in Alzheimer's disease (AD) (acetylcholinesterase (AChE), butyrylcholinesterase (BuChE) and 5-lipoxygenase (5-LOX)), major depressive disorder (MDD) and Parkinson's disease (PD) (monoamine oxidases: h MAO-A and h MAO-B respectively)...
March 21, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
Martina Miceli, Elia Roma, Paolo Rosa, Marta Feroci, M Antonietta Loreto, Daniela Tofani, Tecla Gasperi
The present work aimed to synthesise promising antioxidant compounds as a valuable alternative to the currently expensive and easily degradable molecules that are employed as stabilizers in industrial preparation. Taking into account our experience concerning domino Friedel-Crafts/lactonization reactions, we successfully improved and extended the previously reported methodology toward the synthesis of 3,3-disubstituted-3 H -benzofuran-2-one derivatives 9 - 20 starting from polyphenols 1 - 6 as substrates and either diethylketomalonate ( 7 ) or 3,3,3-trifluoromethyl pyruvate ( 8 ) as electrophilic counterpart...
March 21, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
Y Q Liu, P Strappe, Z K Zhou, C Blanchard
Rice bran, a valuable byproduct of the rice milling process, has limitations in food industrial applications due to its instability during storage. This review summaries the methodology for stabilization and its impact on the nutritional properties of rice bran. A variety of treatments have been used and these include heat treatment, low-temperature storage, biological and chemical approaches and these will be discussed in terms of their ability to destroy/inhibit enzyme activity and improve storage performance of rice bran...
March 21, 2018: Critical Reviews in Food Science and Nutrition
Sukhmeen Kaur Kohli, Neha Handa, Anket Sharma, Vandana Gautam, Saroj Arora, Renu Bhardwaj, Leonard Wijaya, Mohammed Nasser Alyemeni, Parvaiz Ahmad
Lead (Pb) is considered one the most hazardous pollutant, and its accumulation in soil and plants is of prime concern. To understand the role of plant hormones in combating heavy metal stress, the present study was planned to assess the interactive effects of 24-epibrassinolide (EBL) (10-7  M) and salicylic acid (SA) (1 mM) in regulating growth, pigment contents, antioxidative defense response, and gene expression in Brassica juncea L. seedlings exposed to different concentrations of Pb metal (0.25, 0.50, and 0...
March 20, 2018: Environmental Science and Pollution Research International
Laura Soldati, Laura Di Renzo, Emilio Jirillo, Paolo A Ascierto, Francesco M Marincola, Antonino De Lorenzo
Immunotherapy has matured into standard treatment for several cancers, but much remains to be done to extend the reach of its effectiveness particularly to cancers that are resistant within each indication. This review proposes that nutrition can affect and potentially enhance the immune response against cancer. The general mechanisms that link nutritional principles to immune function and may influence the effectiveness of anticancer immunotherapy are examined. This represents also the premise for a research project aimed at identifying the best diet for immunotherapy enhancement against tumours (D...
March 20, 2018: Journal of Translational Medicine
Sahla Belhadj, Olfa Hentati, Ghaith Hamdaoui, Khaskhoussi Fakhreddine, Elisa Maillard, Stéphanie Dal, Séverine Sigrist
Hyperglycemia occurs during diabetes and insulin resistance. It causes oxidative stress by increasing reactive oxygen species (ROS) levels, leading to cellular damage. Polyphenols play a central role in defense against oxidative stress. In our study, we investigated the antioxidant properties of simmondsin, a pure molecule present in jojoba seeds, and of the aqueous extract of jojoba seeds on fructose-induced oxidative stress in RINm5f beta cells. The exposure of RINm5f beta cells to fructose triggered the loss of cell viability (-48%, p < 0...
March 20, 2018: Nutrients
Joelle Khairallah, Shima Sadeghi Ekbatan, Kebba Sabally, Michèle M Iskandar, Raza Hussain, Atef Nassar, Lekha Sleno, Laetitia Rodes, Satya Prakash, Danielle J Donnelly, Stan Kubow
A multistage human gastrointestinal model was used to digest a polyphenol-rich potato extract containing chlorogenic acid, caffeic acid, ferulic acid, and rutin as the primary polyphenols, to assess for their microbial biotransformation and to measure changes in antioxidant capacity in up to 24 h of digestion. The biotransformation of polyphenols was assessed by liquid chromatography-mass spectrometry. Antioxidant capacity was measured by the ferric reducing antioxidant power (FRAP) assay. Among the colonic reactors, parent (poly)phenols were detected in the ascending (AC), but not the transverse (TC) or descending (DC) colons...
March 20, 2018: Antioxidants (Basel, Switzerland)
Francisco A Tomas-Barberan, Maria V Selma, Juan C Espín
No abstract text is available yet for this article.
March 20, 2018: Journal of Agricultural and Food Chemistry
Anthony Bellee, Stephanie Cluzet, Marie-Cécile Dufour, Jean-Michel Merillon, Marie-France Corio-Costet
Grapevine is subject to diseases that affect yield and wine quality caused by various pathogens including Botrytis cinerea. To limit the use of fungicides, an alternative is to use plant elicitors such as benzothiadiazole (BTH). We investigated the effect of a fungicide (pyrimethanil) and an elicitor (benzothiadiazole) on plant defenses. Applications for two consecutive years in the vineyard significantly reduced gray mold. Two and seven days after treatments, the expressions of 48 genes involved in defenses showed differential modulation (up- or down-regulation) depending on treatment...
March 20, 2018: Journal of Agricultural and Food Chemistry
Arun Kumar C Huded, Pavankumar Jingade, Manoj Kumar Mishra
Isolation of high-quality RNA from coffee is challenging because of high level of polysaccharides, polyphenols and other secondary metabolites. In the present study, a rapid and efficient RNA extraction protocol from different tissues of coffee was optimized. Sufficiently high quality and quantity (225.6-454.8 µg/g) of RNA was obtained by using the optimized protocol. The presence of two distinct bands of 28S rRNA and 18S rRNA in agarose gel proved the intactness of the RNA samples. The average spectrophotometric values of the isolated RNA ranged from 1...
March 2018: 3 Biotech
Jinshan Guo, Wei Sun, Jimin Peter Kim, Xili Lu, Qiyao Li, Min Lin, Oliver Mrowczynski, Elias B Rizk, Juange Cheng, Guoying Qian, Jian Yang
Tissue adhesives play an important role in surgery to close wounds, seal tissues, and stop bleeding, but existing adhesives are costly, cytotoxic, or bond weakly to tissue. Inspired by the water-resistant adhesion of plant-derived tannins, we herein report a new family of bioadhesives derived from a facile, one-step Michael addition of tannic acid and gelatin under oxidizing conditions and crosslinked by silver nitrate. The oxidized polyphenol groups of tannic acid enable wet tissue adhesion through catecholamine-like chemistry, while both tannic acid and silver nanoparticles reduced from silver nitrate provide antimicrobial sources inherent within the polymeric network...
March 16, 2018: Acta Biomaterialia
Nevena Kardum, Maria Glibetic
Regular and optimal intake of polyphenols associates with numerous health-promoting effects. Bioavailability and activity of polyphenols depend on foods' structure and interactions with other food constituents, especially proteins, lipids, and carbohydrates. Polyphenols-proteins interactions can result in various biological effects, such as sense of astringency. So far, polyphenols interactions with food lipids have not been of special importance, except in case of plant oils. Polyphenols-carbohydrates interactions can influence the organoleptic properties, while interactions with dietary fibers are particularly significant...
2018: Advances in Food and Nutrition Research
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