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Characterization of Polyphenol Oxidase and Antioxidants from Pawpaw (Asimina Tribola) Fruit
University of Kentucky UKnowledge University of Kentucky Master's Theses Graduate School 2007 CHARACTERIZATION OF POLYPHENOL OXIDASE AND ANTIOXIDANTS FROM PAWPAW (ASIMINA TRIBOLA) FRUIT Caodi Fang University of Kentucky, [email protected] Right click to open a feedback form in a new tab to let us know how this document benefits ou.y Recommended Citation Fang, Caodi, "CHARACTERIZATION OF POLYPHENOL OXIDASE AND ANTIOXIDANTS FROM PAWPAW (ASIMINA TRIBOLA) FRUIT" (2007). University of Kentucky Master's Theses. 477. https://uknowledge.uky.edu/gradschool_theses/477 This Thesis is brought to you for free and open access by the Graduate School at UKnowledge. It has been accepted for inclusion in University of Kentucky Master's Theses by an authorized administrator of UKnowledge. For more information, please contact [email protected]. ABSTRACT OF THESIS CHARACTERIZATION OF POLYPHENOL OXIDASE AND ANTIOXIDANTS FROM PAWPAW (ASIMINA TRIBOLA) FRUIT Crude polyphenol oxidase (PPO) was extracted from pawpaw (Asimina triloba) fruit. The enzyme exhibited a maximum activity at pH 6.5–7.0 and 5–20 °C, and had -1 a maximum catalysis rate (Vmax) of 0.1363 s and a reaction constant (Km) of 0.3266 M. It was almost completely inactivated when incubated at 80 °C for 10 min. Two isoforms of PPO (MW 28.2 and 38.3 kDa) were identified by Sephadex gel filtration chromatography and polyacrylamide gel electrophoresis. Both the concentration and the total activity of the two isoforms differed (P < 0.05) between seven genotypes of pawpaw tested. Thermal stability (92 °C, 1–5 min) and colorimetry (L* a* b*) analyses showed significant variations between genotypes. -
3. Methodology
3. METHODOLOGY The present study focused on the responses evoked by B. monnieri under conditions of oxidative stress. The plan of work and the methodology adopted are presented in this chapter. The work was carried out in four phases. In Phase I, different parts of B. monnieri , namely leaves, stolon and roots, were assessed for their antioxidant potential and free radical scavenging activity. The biomolecular protective effects and the apoptosis- modulating effects of the leaf extract in cell free and in vitro systems were studied in Phase II. Phase III involved assessing the antioxidant status in precision-cut liver slices exposed to oxidative stress and confirming the results in experimental animals. In the final phase of the study, phytochemical analysis of the active component in B. monnieri leaves was carried out. The layout of the study is presented below. PHASE I In this phase, the antioxidant status in different parts of B. monnieri was assessed. The leaves, stolon and roots of the plantlets were collected from the plants grown in pots in the University campus. They were washed thoroughly in running tap water in order to remove any dirt or soil particles adhered and blotted gently between folds of tissue paper to remove any water droplets. Both enzymic and non-enzymic antioxidants were analysed in all the three parts of the plant. ENZYMIC ANTIOXIDANTS The enzymic antioxidants analyzed in the parts of B. monnieri w ere superoxide dismutase, catalase, peroxidase, glutathione S-transferase and polyphenol oxidase. ASSAY OF SUPEROXIDE DISMUTASE (SOD) SOD was assayed according to the method of Kakkar et al. -
Polyphenol Oxidases in Plants and Fungi: Going Places? a Review
PHYTOCHEMISTRY Phytochemistry 67 (2006) 2318–2331 www.elsevier.com/locate/phytochem Review Polyphenol oxidases in plants and fungi: Going places? A review Alfred M. Mayer Department of Plant and Environmental Sciences, The Hebrew University of Jerusalem, Jerusalem 91904, Israel Received 3 June 2006; received in revised form 22 July 2006 Available online 14 September 2006 Abstract The more recent reports on polyphenol oxidase in plants and fungi are reviewed. The main aspects considered are the structure, dis- tribution, location and properties of polyphenol oxidase (PPO) as well as newly discovered inhibitors of the enzyme. Particular stress is given to the possible function of the enzyme. The cloning and characterization of a large number of PPOs is surveyed. Although the active site of the enzyme is conserved, the amino acid sequence shows very considerable variability among species. Most plants and fungi PPO have multiple forms of PPO. Expression of the genes coding for the enzyme is tissue specific and also developmentally controlled. Many inhibitors of PPO have been described, which belong to very diverse chemical structures; however, their usefulness for controlling PPO activity remains in doubt. The function of PPO still remains enigmatic. In plants the positive correlation between levels of PPO and the resistance to pathogens and herbivores is frequently observed, but convincing proof of a causal relationship, in most cases, still has not been published. Evidence for the induction of PPO in plants, particularly under conditions of stress and pathogen attack is consid- ered, including the role of jasmonate in the induction process. A clear role of PPO in a least two biosynthetic processes has been clearly demonstrated. -
Volume: 6 Number: 1 2019
Internat�onalInternat�onal Journal Journal of of Secondary Secondary Metabol�te Metabol�te e-ISSN: 2148-6905 Internat�onal Journal of Secondary Metabol�te http://www.ijate.net/index.php/ijsm http://dergipark.gov.tr/ijsm I J S Volume: 6 Number: 1 M 2019 Internat�onal Journal of Secondary Metabol�te (IJSM) �s a peer-rev�ewed onl�ne journal International Journal of Secondary Metabolite, Vol. 6, No. 1, (2019) International Journal of Secondary Metabolite Scope of International Journal of Secondary Metabolite is published 4 issues per year (starting from June 2018) and accepts English language manuscripts covering all areas of plant biology (medical aromatic plants. plant physiology, biochemistry, plant chemistry, allelopathy, plant hormones, secondary metabolites, plant biotechnology, antioxidant). International Journal of Secondary Metabolite welcomes the submission of manuscripts that meet the general criteria of significance and scientific excellence. Authors are required to frame their research questions and discuss their results in terms of major questions in plant biology. In general, papers that are too narrowly focused, purely descriptive, or broad surveys, or that contain only preliminary data or natural history, will not be considered. Contribution is open to researchers of all nationalities. The following types of article will be considered: 1. Research articles: Original research in various fields of botany will be evaluated as research articles. 2. Research notes: These include articles such as preliminary notes on a study or manuscripts on a plant physiology and new records. 3. Reviews: Reviews of recent developments, improvements, discoveries, and ideas in various fields of plant biology will be requested by the editor or advisory board. -
Molecular Identification of Fungi
Molecular Identification of Fungi Youssuf Gherbawy l Kerstin Voigt Editors Molecular Identification of Fungi Editors Prof. Dr. Youssuf Gherbawy Dr. Kerstin Voigt South Valley University University of Jena Faculty of Science School of Biology and Pharmacy Department of Botany Institute of Microbiology 83523 Qena, Egypt Neugasse 25 [email protected] 07743 Jena, Germany [email protected] ISBN 978-3-642-05041-1 e-ISBN 978-3-642-05042-8 DOI 10.1007/978-3-642-05042-8 Springer Heidelberg Dordrecht London New York Library of Congress Control Number: 2009938949 # Springer-Verlag Berlin Heidelberg 2010 This work is subject to copyright. All rights are reserved, whether the whole or part of the material is concerned, specifically the rights of translation, reprinting, reuse of illustrations, recitation, broadcasting, reproduction on microfilm or in any other way, and storage in data banks. Duplication of this publication or parts thereof is permitted only under the provisions of the German Copyright Law of September 9, 1965, in its current version, and permission for use must always be obtained from Springer. Violations are liable to prosecution under the German Copyright Law. The use of general descriptive names, registered names, trademarks, etc. in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use. Cover design: WMXDesign GmbH, Heidelberg, Germany, kindly supported by ‘leopardy.com’ Printed on acid-free paper Springer is part of Springer Science+Business Media (www.springer.com) Dedicated to Prof. Lajos Ferenczy (1930–2004) microbiologist, mycologist and member of the Hungarian Academy of Sciences, one of the most outstanding Hungarian biologists of the twentieth century Preface Fungi comprise a vast variety of microorganisms and are numerically among the most abundant eukaryotes on Earth’s biosphere. -
Fungal Diversity in the Mediterranean Area
Fungal Diversity in the Mediterranean Area • Giuseppe Venturella Fungal Diversity in the Mediterranean Area Edited by Giuseppe Venturella Printed Edition of the Special Issue Published in Diversity www.mdpi.com/journal/diversity Fungal Diversity in the Mediterranean Area Fungal Diversity in the Mediterranean Area Editor Giuseppe Venturella MDPI • Basel • Beijing • Wuhan • Barcelona • Belgrade • Manchester • Tokyo • Cluj • Tianjin Editor Giuseppe Venturella University of Palermo Italy Editorial Office MDPI St. Alban-Anlage 66 4052 Basel, Switzerland This is a reprint of articles from the Special Issue published online in the open access journal Diversity (ISSN 1424-2818) (available at: https://www.mdpi.com/journal/diversity/special issues/ fungal diversity). For citation purposes, cite each article independently as indicated on the article page online and as indicated below: LastName, A.A.; LastName, B.B.; LastName, C.C. Article Title. Journal Name Year, Article Number, Page Range. ISBN 978-3-03936-978-2 (Hbk) ISBN 978-3-03936-979-9 (PDF) c 2020 by the authors. Articles in this book are Open Access and distributed under the Creative Commons Attribution (CC BY) license, which allows users to download, copy and build upon published articles, as long as the author and publisher are properly credited, which ensures maximum dissemination and a wider impact of our publications. The book as a whole is distributed by MDPI under the terms and conditions of the Creative Commons license CC BY-NC-ND. Contents About the Editor .............................................. vii Giuseppe Venturella Fungal Diversity in the Mediterranean Area Reprinted from: Diversity 2020, 12, 253, doi:10.3390/d12060253 .................... 1 Elias Polemis, Vassiliki Fryssouli, Vassileios Daskalopoulos and Georgios I. -
(US) 38E.85. a 38E SEE", A
USOO957398OB2 (12) United States Patent (10) Patent No.: US 9,573,980 B2 Thompson et al. (45) Date of Patent: Feb. 21, 2017 (54) FUSION PROTEINS AND METHODS FOR 7.919,678 B2 4/2011 Mironov STIMULATING PLANT GROWTH, 88: R: g: Ei. al. 1 PROTECTING PLANTS FROM PATHOGENS, 3:42: ... g3 is et al. A61K 39.00 AND MMOBILIZING BACILLUS SPORES 2003/0228679 A1 12.2003 Smith et al." ON PLANT ROOTS 2004/OO77090 A1 4/2004 Short 2010/0205690 A1 8/2010 Blä sing et al. (71) Applicant: Spogen Biotech Inc., Columbia, MO 2010/0233.124 Al 9, 2010 Stewart et al. (US) 38E.85. A 38E SEE",teWart et aal. (72) Inventors: Brian Thompson, Columbia, MO (US); 5,3542011/0321197 AllA. '55.12/2011 SE",Schön et al.i. Katie Thompson, Columbia, MO (US) 2012fO259101 A1 10, 2012 Tan et al. 2012fO266327 A1 10, 2012 Sanz Molinero et al. (73) Assignee: Spogen Biotech Inc., Columbia, MO 2014/0259225 A1 9, 2014 Frank et al. US (US) FOREIGN PATENT DOCUMENTS (*) Notice: Subject to any disclaimer, the term of this CA 2146822 A1 10, 1995 patent is extended or adjusted under 35 EP O 792 363 B1 12/2003 U.S.C. 154(b) by 0 days. EP 1590466 B1 9, 2010 EP 2069504 B1 6, 2015 (21) Appl. No.: 14/213,525 WO O2/OO232 A2 1/2002 WO O306684.6 A1 8, 2003 1-1. WO 2005/028654 A1 3/2005 (22) Filed: Mar. 14, 2014 WO 2006/O12366 A2 2/2006 O O WO 2007/078127 A1 7/2007 (65) Prior Publication Data WO 2007/086898 A2 8, 2007 WO 2009037329 A2 3, 2009 US 2014/0274707 A1 Sep. -
Discovery of Oxidative Enzymes for Food Engineering. Tyrosinase and Sulfhydryl Oxi- Dase
Dissertation VTT PUBLICATIONS 763 1,0 0,5 Activity 0,0 2 4 6 8 10 pH Greta Faccio Discovery of oxidative enzymes for food engineering Tyrosinase and sulfhydryl oxidase VTT PUBLICATIONS 763 Discovery of oxidative enzymes for food engineering Tyrosinase and sulfhydryl oxidase Greta Faccio Faculty of Biological and Environmental Sciences Department of Biosciences – Division of Genetics ACADEMIC DISSERTATION University of Helsinki Helsinki, Finland To be presented for public examination with the permission of the Faculty of Biological and Environmental Sciences of the University of Helsinki in Auditorium XII at the University of Helsinki, Main Building, Fabianinkatu 33, on the 31st of May 2011 at 12 o’clock noon. ISBN 978-951-38-7736-1 (soft back ed.) ISSN 1235-0621 (soft back ed.) ISBN 978-951-38-7737-8 (URL: http://www.vtt.fi/publications/index.jsp) ISSN 1455-0849 (URL: http://www.vtt.fi/publications/index.jsp) Copyright © VTT 2011 JULKAISIJA – UTGIVARE – PUBLISHER VTT, Vuorimiehentie 5, PL 1000, 02044 VTT puh. vaihde 020 722 111, faksi 020 722 4374 VTT, Bergsmansvägen 5, PB 1000, 02044 VTT tel. växel 020 722 111, fax 020 722 4374 VTT Technical Research Centre of Finland, Vuorimiehentie 5, P.O. Box 1000, FI-02044 VTT, Finland phone internat. +358 20 722 111, fax + 358 20 722 4374 Edita Prima Oy, Helsinki 2011 2 Greta Faccio. Discovery of oxidative enzymes for food engineering. Tyrosinase and sulfhydryl oxi- dase. Espoo 2011. VTT Publications 763. 101 p. + app. 67 p. Keywords genome mining, heterologous expression, Trichoderma reesei, Aspergillus oryzae, sulfhydryl oxidase, tyrosinase, catechol oxidase, wheat dough, ascorbic acid Abstract Enzymes offer many advantages in industrial processes, such as high specificity, mild treatment conditions and low energy requirements. -
New Records of Polypores from Iran, with a Checklist of Polypores for Gilan Province
CZECH MYCOLOGY 68(2): 139–148, SEPTEMBER 27, 2016 (ONLINE VERSION, ISSN 1805-1421) New records of polypores from Iran, with a checklist of polypores for Gilan Province 1 2 MOHAMMAD AMOOPOUR ,MASOOMEH GHOBAD-NEJHAD *, 1 SEYED AKBAR KHODAPARAST 1 Department of Plant Protection, Faculty of Agricultural Sciences, University of Gilan, P.O. Box 41635-1314, Rasht 4188958643, Iran. 2 Department of Biotechnology, Iranian Research Organization for Science and Technology (IROST), P.O. Box 3353-5111, Tehran 3353136846, Iran; [email protected] *corresponding author Amoopour M., Ghobad-Nejhad M., Khodaparast S.A. (2016): New records of polypores from Iran, with a checklist of polypores for Gilan Province. – Czech Mycol. 68(2): 139–148. As a result of a survey of poroid basidiomycetes in Gilan Province, Antrodiella fragrans, Ceriporia aurantiocarnescens, Oligoporus tephroleucus, Polyporus udus,andTyromyces kmetii are newly reported from Iran, and the following seven species are reported as new to this province: Coriolopsis gallica, Fomitiporia punctata, Hapalopilus nidulans, Inonotus cuticularis, Oligo- porus hibernicus, Phylloporia ribis,andPolyporus tuberaster. An updated checklist of polypores for Gilan Province is provided. Altogether, 66 polypores are known from Gilan up to now. Key words: fungi, hyrcanian forests, poroid basidiomycetes. Article history: received 28 July 2016, revised 13 September 2016, accepted 14 September 2016, published online 27 September 2016. Amoopour M., Ghobad-Nejhad M., Khodaparast S.A. (2016): Nové nálezy chorošů pro Írán a checklist chorošů provincie Gilan. – Czech Mycol. 68(2): 139–148. Jako výsledek systematického výzkumu chorošotvarých hub v provincii Gilan jsou publikovány nové druhy pro Írán: Antrodiella fragrans, Ceriporia aurantiocarnescens, Oligoporus tephroleu- cus, Polyporus udus a Tyromyces kmetii. -
The Diversity of Macromycetes in the Territory of Batočina (Serbia)
Kragujevac J. Sci. 41 (2019) 117-132. UDC 582.284 (497.11) Original scientific paper THE DIVERSITY OF MACROMYCETES IN THE TERRITORY OF BATOČINA (SERBIA) Nevena N. Petrović*, Marijana M. Kosanić and Branislav R. Ranković University of Kragujevac, Faculty of Science, Department of Biology and Ecology St. Radoje Domanović 12, 34 000 Kragujevac, Republic of Serbia *Corresponding author; E-mail: [email protected] (Received March 29th, 2019; Accepted April 30th, 2019) ABSTRACT. The purpose of this paper was discovering the diversity of macromycetes in the territory of Batočina (Serbia). Field studies, which lasted more than a year, revealed the presence of 200 species of macromycetes. The identified species belong to phyla Basidiomycota (191 species) and Ascomycota (9 species). The biggest number of registered species (100 species) was from the order Agaricales. Among the identified species was one strictly protected – Phallus hadriani and seven protected species: Amanita caesarea, Marasmius oreades, Cantharellus cibarius, Craterellus cornucopia- odes, Tuber aestivum, Russula cyanoxantha and R. virescens; also, several rare and endangered species of Serbia. This paper is a contribution to the knowledge of the diversity of macromycetes not only in the territory of Batočina, but in Serbia, in general. Keywords: Ascomycota, Basidiomycota, Batočina, the diversity of macromycetes. INTRODUCTION Fungi represent one of the most diverse and widespread group of organisms in terrestrial ecosystems, but, despite that fact, their diversity remains highly unexplored. Until recently it was considered that there are 1.6 million species of fungi, from which only something around 100 000 were described (KIRK et al., 2001), while data from 2017 lists 120000 identified species, which is still a slight number (HAWKSWORTH and LÜCKING, 2017). -
Nelumbo Nucifera)
Transcriptome Proling for Pericarp Browning During Long-term Storage of Intact Lotus Root (Nelumbo Nucifera) Kanjana Worarad ( [email protected] ) Ibaraki University Tomohiro Suzuki Utsunomiya University Haruka Norii Ibaraki University Yuya Muchizuki Ibaraki University Takashi Ishii Ibaraki Agriculture Center Keiko Shinohara Tokushima Horticulture Takao Miyamoto Renkon3kyodai Tsutomu Kuboyama Ibaraki University Eiichi Inoue Ibaraki University Library Mito Main Library: Ibaraki Daigaku Toshokan Honkan Mito Campus Research Article Keywords: Browning disorder, RNA sequencing, Transcriptomics, Postharvest physiology Posted Date: May 25th, 2021 DOI: https://doi.org/10.21203/rs.3.rs-539513/v1 License: This work is licensed under a Creative Commons Attribution 4.0 International License. Read Full License Version of Record: A version of this preprint was published at Plant Growth Regulation on August 11th, 2021. See the published version at https://doi.org/10.1007/s10725-021-00736-2. 1 1 Transcriptome profiling for pericarp browning during long-term storage of intact lotus root (Nelumbo 2 nucifera) 3 Kanjana Worarad1, Tomohiro Suzuki2, Haruka Norii1, Yuya Muchizuki1, Takashi Ishii3, Keiko Shinohara4, Takao 4 Miyamoto5, Tsutomu Kuboyama1, Eiichi Inoue1* 5 6 1College of Agriculture, Ibaraki University, Ami, Ibaraki 300-0393, Japan. 7 2Center for Bioscience Research and Education, Utsunomiya University, Utsunomiya, Tochigi 321-8505, 8 Japan. 9 3Ibaraki Agricultural Center, Horticultural Research Institute, Mito, Ibaraki 310-8555, Japan. 10 -
Polypore Diversity in North America with an Annotated Checklist
Mycol Progress (2016) 15:771–790 DOI 10.1007/s11557-016-1207-7 ORIGINAL ARTICLE Polypore diversity in North America with an annotated checklist Li-Wei Zhou1 & Karen K. Nakasone2 & Harold H. Burdsall Jr.2 & James Ginns3 & Josef Vlasák4 & Otto Miettinen5 & Viacheslav Spirin5 & Tuomo Niemelä 5 & Hai-Sheng Yuan1 & Shuang-Hui He6 & Bao-Kai Cui6 & Jia-Hui Xing6 & Yu-Cheng Dai6 Received: 20 May 2016 /Accepted: 9 June 2016 /Published online: 30 June 2016 # German Mycological Society and Springer-Verlag Berlin Heidelberg 2016 Abstract Profound changes to the taxonomy and classifica- 11 orders, while six other species from three genera have tion of polypores have occurred since the advent of molecular uncertain taxonomic position at the order level. Three orders, phylogenetics in the 1990s. The last major monograph of viz. Polyporales, Hymenochaetales and Russulales, accom- North American polypores was published by Gilbertson and modate most of polypore species (93.7 %) and genera Ryvarden in 1986–1987. In the intervening 30 years, new (88.8 %). We hope that this updated checklist will inspire species, new combinations, and new records of polypores future studies in the polypore mycota of North America and were reported from North America. As a result, an updated contribute to the diversity and systematics of polypores checklist of North American polypores is needed to reflect the worldwide. polypore diversity in there. We recognize 492 species of polypores from 146 genera in North America. Of these, 232 Keywords Basidiomycota . Phylogeny . Taxonomy . species are unchanged from Gilbertson and Ryvarden’smono- Wood-decaying fungus graph, and 175 species required name or authority changes.