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Flavonoid Glucodiversification with Engineered Sucrose-Active Enzymes Yannick Malbert
Flavonoid glucodiversification with engineered sucrose-active enzymes Yannick Malbert To cite this version: Yannick Malbert. Flavonoid glucodiversification with engineered sucrose-active enzymes. Biotechnol- ogy. INSA de Toulouse, 2014. English. NNT : 2014ISAT0038. tel-01219406 HAL Id: tel-01219406 https://tel.archives-ouvertes.fr/tel-01219406 Submitted on 22 Oct 2015 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. Last name: MALBERT First name: Yannick Title: Flavonoid glucodiversification with engineered sucrose-active enzymes Speciality: Ecological, Veterinary, Agronomic Sciences and Bioengineering, Field: Enzymatic and microbial engineering. Year: 2014 Number of pages: 257 Flavonoid glycosides are natural plant secondary metabolites exhibiting many physicochemical and biological properties. Glycosylation usually improves flavonoid solubility but access to flavonoid glycosides is limited by their low production levels in plants. In this thesis work, the focus was placed on the development of new glucodiversification routes of natural flavonoids by taking advantage of protein engineering. Two biochemically and structurally characterized recombinant transglucosylases, the amylosucrase from Neisseria polysaccharea and the α-(1→2) branching sucrase, a truncated form of the dextransucrase from L. Mesenteroides NRRL B-1299, were selected to attempt glucosylation of different flavonoids, synthesize new α-glucoside derivatives with original patterns of glucosylation and hopefully improved their water-solubility. -
The Role of Phytotoxic and Antimicrobial Compounds of Euphorbia Gummifera in the Cause and Maintenance of the Fairy Circles of Namibia
The role of phytotoxic and antimicrobial compounds of Euphorbia gummifera in the cause and maintenance of the fairy circles of Namibia by Nicole Galt Submitted in partial fulfillment of the requirements for the degree Magister Scientiae Department of Plant and Soil Sciences Faculty of Natural and Agricultural Sciences University of Pretoria Pretoria Supervisor: Prof. J.J.M. Meyer March 2018 i The role of phytotoxic and antimicrobial compounds of Euphorbia gummifera in the cause and maintenance of the fairy circles of Namibia by Nicole Galt Department of Plant and Soil Sciences Faculty of Natural and Agricultural Sciences University of Pretoria Pretoria Supervisor: Prof. J.J.M. Meyer Degree: MSc Medicinal Plant Science Abstract Fairy circles (FC) are unexplained botanical phenomena of the pro-Namib desert and parts of the West Coast of South Africa. They are defined as circular to oval shaped anomalies of varying sizes that are left bereft of vegetation. Even though there are several distinctly different hypotheses that have aimed to explain the origin of fairy circles, none have done so to satisfaction of the scientific community. The aim of this study was to determine if phytotoxic and antibacterial properties of a co-occurring Euphorbia species, E. gummifera plays a role in the creation of fairy circles. Representative soil samples (from inside-, outside fairy circles and underneath dead E. gummifera plants) and plant samples (aerial ii parts of E. gummifera and intact grasses, Stipagrostis uniplumis) were collected from the area. The collected samples were used for a several biological assays. A soil bed bio-assay was done using the three collected soil types. -
THE BIOLOGY, ECOLOGY and CONSERVATION of Euphorbia Clivicola in the LIMPOPO PROVINCE, SOUTH AFRICA
THE BIOLOGY, ECOLOGY AND CONSERVATION OF Euphorbia clivicola IN THE LIMPOPO PROVINCE, SOUTH AFRICA MASTER OF SCIENCE IN BOTANY S.I. CHUENE 2016 THE BIOLOGY, ECOLOGY AND CONSERVATION OF Euphorbia clivicola IN THE LIMPOPO PROVINCE, SOUTH AFRICA BY SELOBA IGNITIUS CHUENE A DISSERTATION SUBMITTED IN FULFILMENT FOR THE DEGREE OF MASTER OF SCIENCE IN BOTANY FACULTY OF SCIENCE AND AGRICULTURE, SCHOOL OF MOLECULAR AND LIFE SCIENCES, DEPARTMENT OF BIODIVERSITY AT THE UNIVERSITY OF LIMPOPO SUPERVISOR: PROF. M.J. POTGIETER CO-SUPERVISOR: MR. J.W. KRUGER (LEDET) 2016 LIMPOP OF O U TY NIVERSI Faculty of Science and Agriculture ABSTRACT The need to conduct a detailed biological and ecological study on Euphorbia clivicola was sparked by the drastic decline in the sizes of the Percy Fyfe Nature Reserve (Mokopane) and Radar Hill (Polokwane) populations, coupled with the discovery of two new populations; one in Dikgale and another in Makgeng village. The two newly (2012) discovered populations lacked scientific data necessary to develop an adaptive management plan. This study aimed to conduct a detailed biological and ecological assessment, in order to develop an informed management and monitoring plan for the four populations of E. clivicola. This study entailed a demographic investigation of all populations and an inter- population genetic diversity comparison so as to establish the relationship between all populations of E. clivicola. The abiotic and biotic interactions of E. clivicola were examined to determine the intrinsic and extrinsic factors causing the decline in the Percy Fyfe Nature Reserve and Radar Hill population sizes. Fire as one of the abiotic factors was observed to be beneficial to E. -
IN SILICO ANALYSIS of FUNCTIONAL Snps of ALOX12 GENE and IDENTIFICATION of PHARMACOLOGICALLY SIGNIFICANT FLAVONOIDS AS
Tulasidharan Suja Saranya et al. Int. Res. J. Pharm. 2014, 5 (6) INTERNATIONAL RESEARCH JOURNAL OF PHARMACY www.irjponline.com ISSN 2230 – 8407 Research Article IN SILICO ANALYSIS OF FUNCTIONAL SNPs OF ALOX12 GENE AND IDENTIFICATION OF PHARMACOLOGICALLY SIGNIFICANT FLAVONOIDS AS LIPOXYGENASE INHIBITORS Tulasidharan Suja Saranya, K.S. Silvipriya, Manakadan Asha Asokan* Department of Pharmaceutical Chemistry, Amrita School of Pharmacy, Amrita Viswa Vidyapeetham University, AIMS Health Sciences Campus, Kochi, Kerala, India *Corresponding Author Email: [email protected] Article Received on: 20/04/14 Revised on: 08/05/14 Approved for publication: 22/06/14 DOI: 10.7897/2230-8407.0506103 ABSTRACT Cancer is a disease affecting any part of the body and in comparison with normal cells there is an elevated level of lipoxygenase enzyme in different cancer cells. Thus generation of lipoxygenase enzyme inhibitors have suggested being valuable. Individual variation was identified by the functional effects of Single Nucleotide Polymorphisms (SNPs). 696 SNPs were identified from the ALOX12 gene, out of which 73 were in the coding non-synonymous region, from which 8 were found to be damaging. In silico analysis was performed to determine naturally occurring flavonoids such as isoflavones having the basic 3- phenylchromen-4-one skeleton for the pharmacological activity, like Genistein, Diadzein, Irilone, Orobol and Pseudobaptigenin. O-methylated isoflavones such as Biochanin, Calycosin, Formononetin, Glycitein, Irigenin, 5-O-Methylgenistein, Pratensein, Prunetin, ψ-Tectorigenin, Retusin and Tectorigenine were also used for the study. Other natural products like Aesculetin, a coumarin derivative; flavones such as ajoene and baicalein were also used for the comparative study of these natural compounds along with acteoside and nordihydroguaiaretic acid (antioxidants) and active inhibitors like Diethylcarbamazine, Zileuton and Azelastine as standard for the computational analysis. -
Baja California, Mexico, and a Vegetation Map of Colonet Mesa Alan B
Aliso: A Journal of Systematic and Evolutionary Botany Volume 29 | Issue 1 Article 4 2011 Plants of the Colonet Region, Baja California, Mexico, and a Vegetation Map of Colonet Mesa Alan B. Harper Terra Peninsular, Coronado, California Sula Vanderplank Rancho Santa Ana Botanic Garden, Claremont, California Mark Dodero Recon Environmental Inc., San Diego, California Sergio Mata Terra Peninsular, Coronado, California Jorge Ochoa Long Beach City College, Long Beach, California Follow this and additional works at: http://scholarship.claremont.edu/aliso Part of the Biodiversity Commons, Botany Commons, and the Ecology and Evolutionary Biology Commons Recommended Citation Harper, Alan B.; Vanderplank, Sula; Dodero, Mark; Mata, Sergio; and Ochoa, Jorge (2011) "Plants of the Colonet Region, Baja California, Mexico, and a Vegetation Map of Colonet Mesa," Aliso: A Journal of Systematic and Evolutionary Botany: Vol. 29: Iss. 1, Article 4. Available at: http://scholarship.claremont.edu/aliso/vol29/iss1/4 Aliso, 29(1), pp. 25–42 ’ 2011, Rancho Santa Ana Botanic Garden PLANTS OF THE COLONET REGION, BAJA CALIFORNIA, MEXICO, AND A VEGETATION MAPOF COLONET MESA ALAN B. HARPER,1 SULA VANDERPLANK,2 MARK DODERO,3 SERGIO MATA,1 AND JORGE OCHOA4 1Terra Peninsular, A.C., PMB 189003, Suite 88, Coronado, California 92178, USA ([email protected]); 2Rancho Santa Ana Botanic Garden, 1500 North College Avenue, Claremont, California 91711, USA; 3Recon Environmental Inc., 1927 Fifth Avenue, San Diego, California 92101, USA; 4Long Beach City College, 1305 East Pacific Coast Highway, Long Beach, California 90806, USA ABSTRACT The Colonet region is located at the southern end of the California Floristic Province, in an area known to have the highest plant diversity in Baja California. -
Cratoxylum Formosum (Jack) Dyer in Hook and Their DPPH Radical Scavenging Activities
– MEDICINAL Medicinal Chemistry Research (2019) 28:1441 1447 CHEMISTRY https://doi.org/10.1007/s00044-019-02383-9 RESEARCH ORIGINAL RESEARCH Chemical constituents of the Vietnamese plants Dalbergia tonkinensis Prain and Cratoxylum formosum (Jack) Dyer in Hook and their DPPH radical scavenging activities 1,2 1 2 1 2 1 Ninh The Son ● Mari Kamiji ● Tran Thu Huong ● Miwa Kubo ● Nguyen Manh Cuong ● Yoshiyasu Fukuyama Received: 29 April 2019 / Accepted: 7 June 2019 / Published online: 15 June 2019 © Springer Science+Business Media, LLC, part of Springer Nature 2019 Abstract Phytochemical investigations of the leaves and roots of Dalbergia tonkinensis led to the isolation of a new isoflavone glycoside derivative, isocaviunin 7-O-β-D-apiofuranosyl-(1 → 6)-β-D-glucopyranoside (1), and a new scalemic sesqui- terpene lactone, 3,7-dimethyl-3-vinylhexahydro-6,7-bifuran-3(2H)-one (2), along with the previously known compounds 3- 16, and nine other known compounds 17-25 were isolated from the leaves of Cratoxylum formosum. The chemical structures of the isolated compounds were elucidated by 1D- and 2D-NMR analyses as well as MS spectroscopic data. The results suggest that flavonoids are characteristic of both plants. In the DPPH radical scavenging assay, (3 R)-vestitol (5) and 1234567890();,: 1234567890();,: isoquercetin (24) possessed the strongest antioxidative IC50 values of 42.20 µg/mL and 45.63 µg/mL, respectively, and their values were comparable to that of the positive control catechin (IC50 42.98 µg/mL). Keywords Dalbergia tonkinensis ● Cratoxylum formosum ● leaves ● roots ● DPPH radical scavenging activity Introduction inhibition (Nguyen et al. 2018), but to date, the phyto- chemical studies on this plant have been quite limited. -
Connoisseurs' Cacti
ThCe actus Explorer The first free on-line Journal for Cactus and Succulent Enthusiasts 1 Siccobaccatus 2 Morangaya pensilis Number 17 3 Espostoa in Tenerife ISSN 2048-0482 4 Barranco Rambla de Ruiz December 2016 5 Juab and Utah County The Cactus Explorer ISSN 2048-0482 Number 17 December2016 IN THIS EDITION Regular Features Articles Introduction 3 A naturalised population of News and Events 4 Espostoa melanostele on Tenerife 21 In the Glasshouse 9 Travel with the cactus expert (16) 25 Journal Roundup 14 Where lizards dare: an excursion to Barranco On-line Journals 15 Rambla de Ruiz (Tenerife) 29 The Love of Books 18 Juab and Utah County, Utah, throughout the Society Pages 51 year 2015 36 Plants and Seeds for Sale 55 A Happy Medium? Morangaya pensilis . 41 Books for Sale 62 Cover Picture: Siccobaccatus dolichospermaticus See page 9 The No.1 source for on-line information about cacti and succulents is http://www.cactus-mall.com The best on-line library of succulent literature can be found at: https://www.cactuspro.com/biblio/en:accueil Invitation to Contributors Please consider the Cactus Explorer as the place to publish your articles. We welcome contributions for any of the regular features or a longer article with pictures on any aspect of cacti and succulents. The editorial team is happy to help you with preparing your work. Please send your submissions as plain text in a ‘Word’ document together with jpeg or tiff images with the maximum resolution available. A major advantage of this on-line format is the possibility of publishing contributions quickly and any issue is never full! We aim to publish your article quickly and the copy deadline is just a few days before the publication date. -
Ep 3138585 A1
(19) TZZ¥_¥_T (11) EP 3 138 585 A1 (12) EUROPEAN PATENT APPLICATION (43) Date of publication: (51) Int Cl.: 08.03.2017 Bulletin 2017/10 A61L 27/20 (2006.01) A61L 27/54 (2006.01) A61L 27/52 (2006.01) (21) Application number: 16191450.2 (22) Date of filing: 13.01.2011 (84) Designated Contracting States: (72) Inventors: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB • Gousse, Cecile GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO 74230 Dingy Saint Clair (FR) PL PT RO RS SE SI SK SM TR • Lebreton, Pierre Designated Extension States: 74000 Annecy (FR) BA ME •Prost,Nicloas 69440 Mornant (FR) (30) Priority: 13.01.2010 US 687048 26.02.2010 US 714377 (74) Representative: Hoffmann Eitle 30.11.2010 US 956542 Patent- und Rechtsanwälte PartmbB Arabellastraße 30 (62) Document number(s) of the earlier application(s) in 81925 München (DE) accordance with Art. 76 EPC: 15178823.9 / 2 959 923 Remarks: 11709184.3 / 2 523 701 This application was filed on 29-09-2016 as a divisional application to the application mentioned (71) Applicant: Allergan Industrie, SAS under INID code 62. 74370 Pringy (FR) (54) STABLE HYDROGEL COMPOSITIONS INCLUDING ADDITIVES (57) The present specification generally relates to hydrogel compositions and methods of treating a soft tissue condition using such hydrogel compositions. EP 3 138 585 A1 Printed by Jouve, 75001 PARIS (FR) EP 3 138 585 A1 Description CROSS REFERENCE 5 [0001] This patent application is a continuation-in-part of U.S. -
Total Phenolics and Flavonoids Content, Antioxidant Activity and GC/MS Analyses of Euphorbia Grandialata
Journal of Applied Pharmaceutical Science Vol. 7 (06), pp. 176-181, June, 2017 Available online at http://www.japsonline.com DOI: 10.7324/JAPS.2017.70625 ISSN 2231-3354 Total phenolics and flavonoids content, antioxidant activity and GC/MS analyses of Euphorbia grandialata Mona Ismaila, Asmaa I. Owisa, Mona Hettab, Rabab Mohammeda* aPharmacognosy Department, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, 62111, Egypt. bPharmacognosy Department, Faculty of Pharmacy, Fayoum University, 63514, Egypt. ABSTRACT ARTICLE INFO Article history: Objective: This study has been designed to study phenolic and flavonoid contents quantitatively; screen Received on: 24/02/2017 antioxidant activity and investigate unsaponifiable and saponifiable matters of Euphorbia grandialata R. aerial Accepted on: 13/04/2017 parts. Available online: 30/06/2017 Methods: The phenolics and flavonoids content were assayed by Folin-Ciocalteu reagent and aluminium chloride reagent respectively, while the anti-oxidant activity was done by 2, 2-diphenyl-1-picrylhydrazyl Key words: (DPPH).GC/MS analysis was used to analyze unsaponifiable and saponifiable matters. Euphorbiaceae, phenolics, Results: Total phenolics result was calculated as (17.61 ± 1.2 μg gallic acid/g), total flavonoids as (4.495 ± 0.39 DPPH, GC/MS. μg rutin/g) and anti-oxidants activity as (140.6 % μg ascorbic acid/g). The identified compounds in unsaponifiable matter were hydrocarbons (51.1 %), steroids and triterpenes (35.92%). The saponifiable matter showed fourteen components from which six were identified as methyl esters of saturated fatty acids (46.26%) and eight as methyl esters of unsaturated fatty acids (53.74 %). Conclusion: Euphorbia grandialata could be considered as a valuable source of natural antioxidants. -
Datasheet Inhibitors / Agonists / Screening Libraries a DRUG SCREENING EXPERT
Datasheet Inhibitors / Agonists / Screening Libraries A DRUG SCREENING EXPERT Product Name : Orobol Catalog Number : TN2019 CAS Number : 480-23-9 Molecular Formula : C15H10O6 Molecular Weight : 286.20 Description: Orobol is an inhibitor of tyrosine-specific protein kinase and phosphatidylinositol turnover, it has sensitization effect, it can produce produced cisplatin (DDP) sensitivity in human ovarian carcinoma cells by inducing apoptosis through the MT-dependent signaling pathway. Storage: 2 years -80°C in solvent; 3 years -20°C powder; PI3K Receptor (IC50) Caspase Bcl-2 In vitro Activity Isoflavonoid compounds, genistein, psi-tectorigenin and Orobol have been implicated as inhibitors of tyrosine-specific protein kinase and phosphatidylinositol turnover. These compounds have been frequently used as a pharmacological tool to assess signal transduction pathways in various cell systems. In the course of analyzing signaling pathways in rat hepatocytes, we obtained an unexpected finding that these compounds transiently increase cytoplasmic free calcium. Since the Ca2+ mobilizing effect was observed in 1 microM calcium containing buffer, the source of the Ca2+ may be intracellular stores. Reference 1. Isoflavonoids, genistein, psi-tectorigenin, and orobol, increase cytoplasmic free calcium in isolated rat hepatocytes.Biochem Biophys Res Commun. 1992 Jan 31;182(2):894-9. FOR RESEARCH PURPOSES ONLY. NOT FOR DIAGNOSTIC OR THERAPEUTIC USE. Information for product storage and handling is indicated on the product datasheet. Targetmol products are stable for long term under the recommended storage conditions. Our products may be shipped under different conditions as many of them are stable in the short-term at higher or even room temperatures. We ensure that the product is shipped under conditions that will maintain the quality of the reagents. -
( 12 ) United States Patent
US010722444B2 (12 ) United States Patent ( 10 ) Patent No.: US 10,722,444 B2 Gousse et al. (45 ) Date of Patent : Jul. 28 , 2020 (54 ) STABLE HYDROGEL COMPOSITIONS 4,605,691 A 8/1986 Balazs et al . 4,636,524 A 1/1987 Balazs et al . INCLUDING ADDITIVES 4,642,117 A 2/1987 Nguyen et al. 4,657,553 A 4/1987 Taylor (71 ) Applicant: Allergan Industrie , SAS , Pringy (FR ) 4,713,448 A 12/1987 Balazs et al . 4,716,154 A 12/1987 Malson et al. ( 72 ) 4,772,419 A 9/1988 Malson et al. Inventors: Cécile Gousse , Dingy St. Clair ( FR ) ; 4,803,075 A 2/1989 Wallace et al . Sébastien Pierre, Annecy ( FR ) ; Pierre 4,886,787 A 12/1989 De Belder et al . F. Lebreton , Annecy ( FR ) 4,896,787 A 1/1990 Delamour et al. 5,009,013 A 4/1991 Wiklund ( 73 ) Assignee : Allergan Industrie , SAS , Pringy (FR ) 5,087,446 A 2/1992 Suzuki et al. 5,091,171 A 2/1992 Yu et al. 5,143,724 A 9/1992 Leshchiner ( * ) Notice : Subject to any disclaimer , the term of this 5,246,698 A 9/1993 Leshchiner et al . patent is extended or adjusted under 35 5,314,874 A 5/1994 Miyata et al . U.S.C. 154 (b ) by 0 days. 5,328,955 A 7/1994 Rhee et al . 5,356,883 A 10/1994 Kuo et al . (21 ) Appl . No.: 15 /514,329 5,399,351 A 3/1995 Leshchiner et al . 5,428,024 A 6/1995 Chu et al . -
Flavonoid Systematics of North American
FLAVONOID SYSTEMATICS OF NORTH AMERICAN LUPINUS SPECIES (LEGUMINOSAE) by KEVIN WILLIAM NICHOLLS B.Sc.(Hons .), University College of Wales, Aberystwyth, 1972 A THESIS SUBMITTED IN PARTIAL FULFILMENT OF THE REQUIREMENTS FOR THE DEGREE OF DOCTOR OF PHILOSOPHY i n THE FACULTY OF GRADUATE STUDIES (Department of Botany) We accept this thesis as conforming to the required standard THE UNIVERSITY OF"BRITISH COLUMBIA August 1981 © Kevin William Nicholls, 1981 In presenting this thesis in partial fulfilment of the requirements for an advanced degree at the University of British Columbia, I agree that the Library shall make it freely available for reference and study. I further agree that permission for extensive copying of this thesis for scholarly purposes may be granted by the head of my department or by his or her representatives. It is understood that copying or publication of this thesis for financial gain shall not be allowed without my written permission. Department The University of British Columbia 2075 Wesbrook Place Vancouver, Canada V6T 1W5 Date I-»TT> c i i / -in \ 11 ABSTRACT This study was an assessment of the usefulness of flav- onoids as taxonomic markers in the genus Lupinus (Leguminosae). The genus itself is readily recognizable, but, in North America, specific boundaries are poorly defined. This is probably the result of a combination of considerable morphological plasticity and hybridization (particularly amongst the outcrossing peren• nial taxa). At the outset, a detailed analysis of L u p i n u s flavonoids was made. Fifty-six compounds were identified, the majority being flavones based on apigenin, luteolin and less commonly acacetin and chrysoeriol.