STILBENOID CHEMISTRY from WINE and the GENUS VITIS, a REVIEW Alison D
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Stilbenes: Chemistry and Pharmacological Properties
1 Journal of Applied Pharmaceutical Research 2015, 3(4): 01-07 JOURNAL OF APPLIED PHARMACEUTICAL RESEARCH ISSN No. 2348 – 0335 www.japtronline.com STILBENES: CHEMISTRY AND PHARMACOLOGICAL PROPERTIES Chetana Roat*, Meenu Saraf Department of Microbiology & Biotechnology, University School of Sciences, Gujarat University, Ahmedabad, Gujarat 380009, India Article Information ABSTRACT: Medicinal plants are the most important source of life saving drugs for the Received: 21st September 2015 majority of the Worlds’ population. The compounds which synthesized in the plant from the Revised: 15th October 2015 secondary metabolisms are called secondary metabolites; exhibit a wide array of biological and Accepted: 29th October 2015 pharmacological properties. Stilbenes a small class of polyphenols, have recently gained the focus of a number of studies in medicine, chemistry as well as have emerged as promising Keywords molecules that potentially affect human health. Stilbenes are relatively simple compounds Stilbene; Chemistry; synthesized by plants and deriving from the phenyalanine/ polymalonate route, the last and key Structures; Biosynthesis pathway; enzyme of this pathway being stilbene synthase. Here, we review the biological significance of Pharmacological properties stilbenes in plants together with their biosynthesis pathway, its chemistry and its pharmacological significances. INTRODUCTION quantities are present in white and rosé wines, i.e. about a tenth Plants are source of several drugs of natural origin and hence of those of red wines. Among these phenolic compounds, are termed as the medicinal plants. These drugs are various trans-resveratrol, belonging to the stilbene family, is a major types of secondary metabolites produced by plants; several of active ingredient which can prevent or slow the progression of them are very important drugs. -
Press Release Revue De Presse
Press Release Revue de Presse 1 CHÂTEAU THÉNAC ROUGE / RED L’assemblage du premier vin est à l’image du terroir de Thénac : précieux et complexe. Un vin intense à la texture veloutée. Sa puissante expression de fruits noirs et d’épices, ses tanins parfaitement fondus sont autant de marques d’élégance. The blending of our Grand Vin mirrors Thénac’s terroir: precious and complex. An intense wine with a velvety texture, its strong flavour of black fruits and spices and its perfectly well-rounded tannins showcase its elegance. CHÂTEAU THÉNAC 2019 “Really well done with deep fruit and lots of wet earth and dark fruit. Full an tight with a muscular structure.” James Suckling, 92-93 points “ The red 2019 Château Thénac is also noteworthy (reviewing CT 19 White). Revealing a dense ruby/purple color as well as a ripe bouquet of spiced currants, tobacco, and earthy, cedary notes, it hits the palate with medium to full body, some chewy yet ripe tannins, and a good finish. It’ opens up nicely with time in the glass, and my money is on it being an outstanding bottle of wine.” Jeb Dunnuck, 89-92 points “ The 2019 Thénac is a big, heady wine that offers tons of immediacy. Black cherry, bittersweet chocolate, new leather, licorice, cloves and sweet French oak infuse this unctuous, full-throttle Bordeaux with plenty of richness.” Antonio Galloni, 87-89 points “ Dark purple colour with violet hue and black core. Opulent and concentrated nose with aroma reminiscent of black cherries, prunes and blackcurrant jam, mild spices and a Port-like opulence in the background. -
What Is Wine?
Developing a Consumer Language to Describe Local Red Wines Using Projective Mapping by Heather Jantzi Thesis Submitted in partial fulfillment of the Requirements for the Degree of Bachelor of Science in Nutrition with Honours Acadia University March, 2017 ©Copyright by Heather Jantzi, 2017 This thesis by Heather Jantzi is accepted in its present form by the School of Nutrition and Dietetics as satisfying the thesis requirements for the degree of Bachelor of Science with Honours Approved by the Thesis Supervisor __________________________ ____________________ Dr. Matt McSweeney Date Approved by the Head of the Department __________________________ ____________________ Dr. Catherine Morley Date Approved by the Honours Committee __________________________ ____________________ Dr. Jun Yang Date ii I, Heather Jantzi, grant permission to the University Librarian at Acadia University to reproduce, loan or distribute copies of my thesis in microform, paper or electronic formats on a non-profit basis. I however, retain the copyright in my thesis. _________________________________ Signature of Author _________________________________ Date iii ACKNOWLEDGEMENTS First and foremost, I would like to thank Dr. Matthew McSweeney for supervising this research project. His ongoing support and constructive feedback took away my fears of writing a thesis, and his humour and energy made my learning experience more enjoyable than I ever anticipated. I also extend great thanks to Dr. Catherine Morley; her enthusiasm for nutrition research inspired me to pursue a topic I was passionate about and her outstanding teaching skills provided me with the foundations I needed to turn my research curiosities into reality. Thank you to my parents, Brad and Kristine Jantzi, for encouraging me to make the most out of my university experience. -
Open Master Thesis Hungli Wang 071720.Pdf
Choose an item. The Pennsylvania State University The Graduate School CHARACTERIZATION OF MICROBIAL DYNAMICS AND VOLATILE METABOLOME CHANGES DURING FERMENTATION OF CHAMBOURCIN GRAPES IN TWO PENNSYLVANIA REGIONS A Thesis in Food Science by Hung Li Wang © 2020 Hung Li Wang Submitted in Partial Fulfillment of the Requirements for the Degree of Master of Science August 2020 The thesis of THEHung LiPURDUE Wang was UNIVERSITY reviewed and approved GRADUATE by the following: SCHOOL Josephine Wee STATEMENT OF COMMITTEE APPROVAL Assistant Professor of Food Science Thesis Advisor Helene Hopfer Assistant Professor of Food Science Darrell W. Cockburn Assistant Professor of Food Science Robert F. Roberts Professor of Food Science Head of the Department of Food Science Approved by: Dr. ii ABSTRACT Numerous studies have indicated that the wine microbiome could generate various volatile compounds which could lead to distinguishing and different wine characteristics. However, little research regarding the wine microbiome is investigating specific microorganisms and their role within the entire microbial community under a more comprehensive sampling method. Thus, in this study we conducted direct sampling from Central and Northeast PA wineries instead of using lab-scale production to study the effect of the wine microbiome on the wine metabolome. Resulting grape and wine samples were characterized by next-generation sequencing and headspace-solid phase microextraction-gas chromatography-mass spectrometry (HS-SPME-GC-MS). Collectively, the innovative sampling and experimental techniques provided a high-resolution picture of microbial dynamics and the resulting wine volatile profiles. Overall, we illustrated how microbial diversity and relative abundance of specific microorganisms change as fermentation progressed. Also, various wine volatile metabolites that are formed during the different fermentation stages were identified. -
Château Dubard Bel Air Red Puisseguin St Emilion Vignobles Dubard
Château Dubard Bel Air Red Puisseguin St Emilion Vignobles Dubard The Dubard Family is for more than 30 years, the most famous producers of refreshing and reasonably priced wines in South-West France. The family members offer differing personalities of graduate oenologists, wine makers and viticulturists who together make up a dynamic and passionate team that has been renowned in the Bergerac wine region for decades. Being receptive to their terroir, combining common sense and long experience with ceaseless wine-making and viticulture: these are the founding principles on which the family has relied in their exceptionnel cuvées. They are also ongoing on the environmental label "HVE" (High Environmental Value). 90% Merlot - 10% Cabernet Franc. Château Bel-Air completed in June 2011 the range of Vignobles Dubard, a group of family-owned wineries in the areas of Bergerac, Francs-Côtes-de-Bordeaux and Lalande de Pomerol. The label designed by the Dubard family pays homage to the cult of the former parish of Puisseguin to the Sacred Heart of Jesus.Vineyards in the area of St Emilion are situated on a calcareous plateau dug by erosion and dominating the Dordogne valley. The soils of Puisseguin St Emilion can be distinguished by their higher content of calcary. Vines : 26 years old - 8.34 Ha - Yield : 45Hl/Ha Alcoholic fermentation and maceration (3 to 4 weeks in total) in temperature-controlled stainless vats. 12 to 18 months ageing in French oak barrels (30 % new oak barrels). The well-integrated tannins first offer a silky palate to reveal afterwards altogether a dense structure and a fresh mouth with liquorice and fruits of the forest aromas. -
Spruce Bark Extract As a Sun Protection Agent in Sunscreens
Mengmeng Sui Spruce bark extract as a Sun protection agent in sunscreens School of Chemical Engineering Master’s Program in Chemical, Biochemical and Materials Engineering Major in Chemical Engineering Master’s thesis for the degree of Master of Science in Technology Submitted for inspection, Espoo 21.07.2018 Thesis supervisor: Prof. Tapani Vuorinen Thesis advisors: M.Sc. (Tech.) Jinze Dou Ph.D. Kavindra Kesari AALTO UNIVERSITY SCHOLLO OF CHEMICAL ENGINEERING ABSTRACT Author: Mengmeng Sui Title: Spruce bark extract as a sun protection agent in sunscreens Date: 21.07. 2018 Language: English Number of pages: 48+7 Master’s programme in Chemical, Biochemical and Materials Engineering Major: Chemical and Process Engineering Supervisor: Prof: Tapani Vuorinen Advisors: M.Sc. (Tech.) Jinze Dou, Ph.D. Kavindra Kesari This study aimed to clarify the feasibility of utilizing spruce inner bark extract as a sun protection agent in sunscreens. Ultrasound-assisted extraction with 60 v-% ethanol was applied to isolate the extract in 25-30 % yield, that was almost independent of the temperature (45-75oC) and time (5-60 min) of the treatment. However, the yield of stilbene glucosides, measured by UV absorption spectroscopy, was highest after ca. 20 min extraction. Nuclear magnetic resonance spectroscopy of the extract showed that it consisted mainly of three stilbene glucosides, astringin, isorhapontin and polydatin (piceid). The maximum overall yield of the stilbene glucosides was > 20 %. Extraction with water gave a much lower yield of the stilbene glucosides. Sunscreens composed of a mixture of vegetable oils, surfactants (fatty acids), glycerin, water and the bark extract were prepared with the low-energy emulsification method. -
Phenolic Compounds As Markers of Wine Quality and Authenticity
foods Review Phenolic Compounds as Markers of Wine Quality and Authenticity Vakare˙ Merkyte˙ 1,2 , Edoardo Longo 1,2,* , Giulia Windisch 1,2 and Emanuele Boselli 1,2 1 Faculty of Science and Technology, Free University of Bozen-Bolzano, Piazza Università 5, 39100 Bozen-Bolzano, Italy; [email protected] (V.M.); [email protected] (G.W.); [email protected] (E.B.) 2 Oenolab, NOI Techpark South Tyrol, Via A. Volta 13B, 39100 Bozen-Bolzano, Italy * Correspondence: [email protected]; Tel.: +39-0471-017691 Received: 29 October 2020; Accepted: 28 November 2020; Published: 1 December 2020 Abstract: Targeted and untargeted determinations are being currently applied to different classes of natural phenolics to develop an integrated approach aimed at ensuring compliance to regulatory prescriptions related to specific quality parameters of wine production. The regulations are particularly severe for wine and include various aspects of the viticulture practices and winemaking techniques. Nevertheless, the use of phenolic profiles for quality control is still fragmented and incomplete, even if they are a promising tool for quality evaluation. Only a few methods have been already validated and widely applied, and an integrated approach is in fact still missing because of the complex dependence of the chemical profile of wine on many viticultural and enological factors, which have not been clarified yet. For example, there is a lack of studies about the phenolic composition in relation to the wine authenticity of white and especially rosé wines. This review is a bibliographic account on the approaches based on phenolic species that have been developed for the evaluation of wine quality and frauds, from the grape varieties (of V. -
Kentucky Viticultural Regions and Suggested Cultivars S
HO-88 Kentucky Viticultural Regions and Suggested Cultivars S. Kaan Kurtural and Patsy E. Wilson, Department of Horticulture, University of Kentucky; Imed E. Dami, Department of Horticulture and Crop Science, The Ohio State University rapes grown in Kentucky are sub- usually more harmful to grapevines than Even in established fruit growing areas, ject to environmental stresses that steady cool temperatures. temperatures occasionally reach critical reduceG crop yield and quality, and injure Mesoclimate is the climate of the vine- levels and cause significant damage. The and kill grapevines. Damaging critical yard site affected by its local topography. moderate hardiness of grapes increases winter temperatures, late spring frosts, The topography of a given site, including the likelihood for damage since they are short growing seasons, and extreme the absolute elevation, slope, aspect, and the most cold-sensitive of the temperate summer temperatures all occur with soils, will greatly affect the suitability of fruit crops. regularity in regions of Kentucky. How- a proposed site. Mesoclimate is much Freezing injury, or winterkill, oc- ever, despite the challenging climate, smaller in area than macroclimate. curs as a result of permanent parts of certain species and cultivars of grapes Microclimate is the environment the grapevine being damaged by sub- are grown commercially in Kentucky. within and around the canopy of the freezing temperatures. This is different The aim of this bulletin is to describe the grapevine. It is described by the sunlight from spring freeze damage that kills macroclimatic features affecting grape exposure, air temperature, wind speed, emerged shoots and flower buds. Thus, production that should be evaluated in and wetness of leaves and clusters. -
Promising Neuroprotective Effects of Oligostilbenes
Nutrition and Aging 3 (2015) 49–54 49 DOI 10.3233/NUA-150050 IOS Press Promising neuroprotective effects of oligostilbenes Hamza Temsamani, Stephanie´ Krisa, Jean-Michel Merillon´ and Tristan Richard∗ Universit´e de Bordeaux, ISVV, EA 3675 GESVAB, 33140 Villenave d’Ornon, France Abstract. Stilbenes (resveratrol derivatives) are a polyphenol class encountered in a large number of specimens in the vegetal realm. They adopt a variety of structures based on their building block: resveratrol. As the most widely studied stilbene to date, resveratrol has shown multiple beneficial effects on multiple diseases and on neurodegenerative diseases. Except for resveratrol, however, the biological activities of stilbenes have received far less attention, even though some of them have shown promising effects on neurodegenerative disease. This review covers the chemistry of stilbenes and offers a wide insight into their neuroprotective effects. Keywords: Resveratrol, stilbene, oligostilbene, neuroprotection 1. Introduction concerning the derivatives of resveratrol and their pro- tective effects on neurodegenerative diseases. Even if “French paradox” [1] is not universally accepted [2], evidences of beneficial effects of wine consumption on health were validated [3–5] and since 2. Polyphenols and stilbenes then has led to a growing interest in polyphenols. Many of these natural secondary metabolites have been Stilbenes constitute a class of phenolic compounds investigated owing to their beneficial effects on human [16, 17]. Polyphenols are mainly synthesized trough health. Indeed, studies have demonstrated a correlation the shikimate pathway and are characterized by at least between moderate wine consumption and a decrease in one hydroxyl group linked to an aromatic cycle. They the risk of cancer, cardiovascular diseases and neurode- can be divided into two groups: flavonoid and non- generative diseases [6]. -
Official Journal of the European Communities No L 214/ 1
16 . 8 . 80 Official Journal of the European Communities No L 214/ 1 I (Acts whose publication is obligatory) COMMISSION REGULATION (EEC) No 2164/80 of 8 August 1980 amending for the seventh time Regulation ( EEC) No 1608/76 laying down detailed rules for the description and presentation of wines and grape musts THE COMMISSION OF THE EUROPEAN on an additional label placed in the same field of COMMUNITIES , vision as the other mandatory information ; Having regard to the Treaty establishing the European Economic Community, Whereas the nominal volume of containers with a volume of not less than 5 ml and not more than 10 1 suitable for putting up wines and grape musts which Having regard to Council Regulation (EEC) No are the subject of intra-Community trade is governed 337/79 of 5 February 1979 on the common organi by Council Directive 75/ 106/EEC of 19 December zation of the market in wine ('), as last amended by 1974 on the approximation of the laws of the Regulation (EEC) No 1988 / 80 (2 ), and in particular Member States relating to the making-up by volume Article 54 ( 5) thereof, of certain prepackaged liquids (8 ), as amended by Directive 79/ 1005 /EEC ( 9); whereas it is necessary, Whereas Council Regulation ( EEC) No 355 /79 of first, to adjust Regulation (EEC) No 1608 /76 in line 5 February 1979 laying down general rules for the with the amendments to that Directive and , secondly, description , and presentation of wines and grape in order to enable the wines and grape musts already musts (■'), as amended by Regulation (EEC) No -
Determining the Mesoscale Impact of Climatic Change for Quebec's Winegrowing Bioclimatology
Open Geospatial Viticulture: Determining the Mesoscale Impact of Climatic Change for Quebec©s Winegrowing Bioclimatology Trevor James Smith A thesis In the Department of Geography, Planning, and Environment Presented in Partial Fulfillment of the Requirements For the Degree of Magisteriate in Science (Geography, Urban, and Environmental Studies) Concordia University Montréal, Québec Canada 24 February 2017 © 2017, Trevor James Smith, Some Rights Reserved Creative Commons 4.0 International BY-NC License (see Annex 6) CONCORDIA UNIVERSITY School of Graduate Studies This is to certify that the thesis prepared by Trevor James Smith Entitled Open Geospatial Viticulture: Determining the Mesoscale Impact of Climatic Change for Quebec©s Winegrowing Bioclimatology and submitted in partial fulfillment of the requirements for the degree of Magisteriate in Science (Geography, Urban, and Environmental Studies) complies with the regulations of the University and meets the accepted standards with respect to originality and quality. Signed by the final Examining Committee: ____________________________________________________ Chair Dr. Norma Rantisi _________________________________________________Examiner Dr. Norman K. Jones _________________________________________________Examiner Dr. Philippe Roy ________________________________________________Supervisor Dr. H. Damon Matthews Approved by ___________________________________________ Chair of Department ___________________________________________ Dean of Faculty of Arts and Science On ___________________________________________ -
Optimization of Bioactive Polyphenols Extraction from Picea Mariana Bark
molecules Article Optimization of Bioactive Polyphenols Extraction from Picea Mariana Bark Nellie Francezon 1,2, Naamwin-So-Bâwfu Romaric Meda 1,2 and Tatjana Stevanovic 1,2,* 1 Renewable Materials Research Centre, Department of Wood and Forest Sciences, Université Laval, Québec, QC G1V 0A6, Canada; [email protected] (N.F.); [email protected] (N.-S.-B.R.M.) 2 Institute of Nutrition and Functional Food (INAF), Université Laval, Quebec, QC G1V 0A6, Canada * Correspondence: [email protected]; Tel.: +1-418-656-2131 Received: 30 October 2017; Accepted: 30 November 2017; Published: 1 December 2017 Abstract: Reported for its antioxidant, anti-inflammatory and non-toxicity properties, the hot water extract of Picea mariana bark was demonstrated to contain highly valuable bioactive polyphenols. In order to improve the recovery of these molecules, an optimization of the extraction was performed using water. Several extraction parameters were tested and extracts obtained analyzed both in terms of relative amounts of different phytochemical families and of individual molecules concentrations. As a result, low temperature (80 ◦C) and low ratio of bark/water (50 mg/mL) were determined to be the best parameters for an efficient polyphenol extraction and that especially for low molecular mass polyphenols. These were identified as stilbene monomers and derivatives, mainly stilbene glucoside isorhapontin (up to 12.0% of the dry extract), astringin (up to 4.6%), resveratrol (up to 0.3%), isorhapontigenin (up to 3.7%) and resveratrol glucoside piceid (up to 3.1%) which is here reported for the first time for Picea mariana. New stilbene derivatives, piceasides O and P were also characterized herein as new isorhapontin dimers.