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  • 1
    Electronic Resource
    Electronic Resource
    Lowest excited triplet states of hypericin and isohypericin
    Amsterdam : Elsevier
    Journal of Photochemistry and Photobiology B: Biology 20 (1993), S. 133-137 
    Details
    ISSN: 1011-1344
    Keywords: Fluorescence ; Hypericin ; Isohypericin ; Phosphorescence ; Triplet state
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/1011-1344(93)80142-V
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  • 2
    Electronic Resource
    Electronic Resource
    A convenient semisynthetic route to hypericin (1993)
    Springer
    Monatshefte für Chemie 124 (1993), S. 339-341 
    Details
    ISSN: 1434-4475
    Keywords: Emodin ; Emodin anthrone ; Hypericin ; Cortex frangulae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Eine semisynthetische Route zur Darstellung von Hypericin unter Verwendung vonCortex frangulae als Ausgangsmaterial wurde erarbeitet. Das daraus einfach und in guten Ausbeuten isolierte Emodin wurde mit Hilfe von SnCl2 zu Emodinanthron reduziert. Letzteres wurde dann über eine bekannte oxidative Dimerisierung und Photocyclisierung zu Hypericin umgesetzt.
    Notes: Summary A semisynthetic route to produce hypericin was established usingCortex frangulae as the starting point. The emodin isolated from it easily and in good yield was reduced to emodin anthrone by means of SnCl2. The latter was reacted via a known oxidative dimerization and photocyclization reaction into hypericin.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00810594
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  • 3
    Electronic Resource
    Electronic Resource
    On the homo- and heteroassociation of hypericin (1994)
    Springer
    Monatshefte für Chemie 125 (1994), S. 753-762 
    Details
    ISSN: 1434-4475
    Keywords: Hypericin ; Homoassociation ; Heteroassociation ; Human serum albumin complex ; Stacking ; Solvent effects
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Hypericin zeigt ein kompliziertes Homo- und Heteroassoziationsverhalten. Während Hypericin in den üblichen polaren Lösungsmitteln bis zu einer Konzentration von 10−3 Mol/l monomolekular löslich ist, führt die Gegenwart von Wasser zur Ausbildung von Homoassoziaten. Wie aus spektroskopischen Messungen abgeleitet wurde, zeigen diese Homoassoziate ein Stapelungsmuster ähnlich jenem des kristallinen Materials. Tetrahydrofuran scheint eine Ausnahme zu sein, da in diesem Tautomerisierung zum 1,6-Dioxotautomer führt. Für die Heteroassoziation beobachtet man zwei Verhaltenstypen. In der Mehrzahl der Fälle bildet Hypericin Homoassoziate, welche dann durch Heteroassoziation mit dem Kosolvat zu stabilen Lösungen führen. Nur mit Humanserumalbumin wird ein spezifisches Heteroassoziat gebildet. Durch Konkurrenzreaktion konnte abgeleitet werden, daß Hypericin an die aktive Stelle der IIIA-Subdomäne des Proteins bindet.
    Notes: Summary Hypericin exhibits rather complicated homo- and heteroassociation behavior. Whereas in common polar solvents hypericin dissolves monomolecularly up to concentrations of 10−3 mol/l, the presence of water in these solvents leads to homoassociation. As derived by spectroscopic measurements, these homoassociates exhibit a stacking pattern similar to the one observed for the crystalline material. Tetrahydrofuran seems to be an exception, as it is the only solvent which results in 1,6-dioxo tautomer formation. Heteroassociation of hypericin involves two distinct types of behavior. In the majority of cases, hypericin forms homoassociates which then heteroassociate with the co-solvate to yield stabilized solutions of these homoassociates. Only with human serum albumin a specific heteroassociate is formed. By means of competition experiments it could be established that hypericin is binding to the active site of the IIIA subdomain of the protein.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01277637
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  • 4
    Electronic Resource
    Electronic Resource
    Glucosaminol, ein Reduktionsprodukt des Glucosamins (1937)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 20 (1937), S. 626-627 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19370200192
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  • 5
    Electronic Resource
    Electronic Resource
    A process for protein enrichment of cassava by solid substrate fermentation in rural conditions (1987)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 29 (1987), S. 962-968 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: An artisanal static process for protein enrichment of cassava by solid-state fermentation, developed in laboratory and tested on pilot units in Burundi (Central Africa), provides enriched cassava containing 10.7% of dry matter protein versus 1% before fermentation. Cassava chips, processed into granules of 2-4-mm diameter, are moistened (40% water content) and steamed. After cooling to 40°C, cassava is mixed with a nutritive solution containing the inoculum (Rhizopus oryzae, strain MUCL 28627) and providing the following per 100 g dry matter: 3.4 g urea, 1.5 g KH2PO4, 0.8 g MgSO4·7H2O, and 22.7 g citric acid. For the fermentation, cassava, with ca. 60% moisture content, is spread in a thin layer (2-3 cm thick) on perforated trays and slid into an aerated humidified enclosure. The incubation lasts ± 65 h. The production of protein enriched cassava is 3.26 kg dry matter/m2 tray. The effects of the variation of the nutritive solution composition and the inoculum conservation period on the protein production are equally discussed.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260290807
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  • 6
    Electronic Resource
    Electronic Resource
    Structure elucidation of a Pyoverdin Produced by Pseudomonas aeruginosa ATCC 27 853 (1993)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 335 (1993), S. 83-87 
    Details
    ISSN: 0941-1216
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The primary structure of a pyoverdin (Pa TII) isolated from an iron deficient culture medium of Pseudomonas aeruginosa ATCC 27 853 has been elucidated by spectroscopic methods and degradation studies. Total assignment of 1H and 13C resonances as well as sequential information were achieved by two-dimensional NMR techniques: HOHAHA1, NOESY, HSQC and HMBC. The structure consists of the common pyoverdin chromophore 5-amino-2,3-dihydro-8,9-dihydroxy-1H-pyrimido [1,2-a]quinoline-1-carboxylic acid with succinic acid bound amidically to its amino group and the carboxyl group linked to the N-terminus of D-Ser-D(CHO) OHOrn-L-Orn-Gly-D-aThr-L-Ser-L-cOHOrn. According to the short-hand nomenclature suggested in [2, 3] the pyoverdin may be described as pyoverdin-Q-so′ OGtaSo′*-SUC.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19933350113
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  • 7
    Electronic Resource
    Electronic Resource
    A channel flow analysis for porous beds moving under high G forces (1980)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 26 (1980), S. 363-371 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: An analysis is made of centrifugal flow of compacted porous beds through channels against high gas backpressure. One-dimensional compressible gas flow solutions are presented for concurrent and countercurrent solids/gas motion through the variable area channels. The physical process analyzed represents the flow through a newly developed centrifugal pump for feeding dry pulverized material against a pressure barrier. The objective of the analysis is to gain a basic theoretical understanding of this type of device. Good agreement is found between analytical predictions and test data obtained with an experimental pump feeding coal.
    Additional Material: 18 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690260306
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  • 8
    Electronic Resource
    Electronic Resource
    Luftgefahr und Luftschutzmöolichkeiten in Deutschland. Herausgegeben von Dr.-Ing. e. h. Jur. Krohne, Reichsminister a. D., Präsident des Vereins Deutscher Luftschutz E. V. Verlag Deutscher Luftschutz E. V., Berlin W35, ohne Jahreszahl (1928)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 41 (1928), S. 1170-1170 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19280414212
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  • 9
    Electronic Resource
    Electronic Resource
    Anleitung zur Herstellung von Ultragiften. Von Dr. Hugo Stoltzenberg, 71 Seiten mit 34 Abbildungen. Verlag Chemische Fabrik Dr. Hugo Stolzenberg, Hamburg 1930 (1930)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 43 (1930), S. 938-938 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19300434216
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  • 10
    Electronic Resource
    Electronic Resource
    Ergebnisse des internationalen Wettbewerbs für die Entdeckung von Yperit und Entscheidungen des Preisgerichtes. Comité international de la Croix-Rouge, Genf 1931 (1932)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 45 (1932), S. 198-198 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19320450915
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