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  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Weed research 19 (1979), S. 0 
    ISSN: 1365-3180
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Application of N-(phosphonomethyl) glycine or GLY'PHO-SATE to couch grass Pancum repens (L) Beauv. resulted in an intitial increase of the total amino acid content in the plant. which reached a maximum on the 8th day following treatment This was most marked in the rhizomes where the value was about three times that of the control plants. The initial increase fell off rapidly with time and on the 15th day after application the total amino acid content of the treated leaf and rhizome samples was less than the controls Resurgence of rhizome activity was noticeable on about the 48th day (viz. 7 weeks after t he Ist application).
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  • 2
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 199 (1963), S. 1302-1303 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Table 1. AMINO-ACII )S AND Al JJOHEXOSES 11 * CULTURES GR OWN (a) WITH AND (6) WITHC 〉UT FREE Ace !ESS OF AIR Culture Amino -acids Suga irs (a) (&) (a) 〈&) Bean 8-5 40-2 67 60 Sycamore 4-2 25-1 109 103 Rose 19-4 47-0 7-3 5-8 Haplopapus 7-2 60 ...
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Plant foods for human nutrition 20 (1971), S. 341-346 
    ISSN: 1573-9104
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Zusammenfassung Zur Untersuchung der Carotinoide des Teeblattes wurde die Dünnschichtchromatographie herangezogen. Diese Methode liefert innerhalb einer halben Stunde eine klare Trennung der einzelnen Komponenten und erfordert nur geringe Mengen des Ausgangsmaterials. Ein anderer Vorteil liegt darin, daß man agressive Reagenzien anwenden kann. Es wurde die Shandon Dünnschichtchromatographie-Ausrüstung verwendet. Vorversuche ergaben, daß mindestens vierzehn Carotinoide in den Teeblättern vorliegen. Die beschriebene Extraktionsmethode schließt eine Verseifung ein, um das Chlorophyll und die Lipide zu entfernen. Die Carotine und Monohydroxyxanthophylle wurden auf Kieselgel-Platten getrennt, während die Polyhydroxyxanthophylle und die Epoxide auf Kieselgur-Platten fraktioniert wurden, die zuvor mit Pflanzenölen imprägniert waren. Die Rf-Werte und andere chemische Daten werden angeführt. Die neun identifizierten Carotinoide sind: β-Carotin, Phytoen, Phytofluen, Lycopin, γ-Carotin, Cryptoxanthin, Violaxanthin, Lutein und Zeaxanthin. Unter den noch nicht identifizierten Carotinoiden waren zwei rote Carotinoide, wahrscheinlicht Keto-Verbindungen, und zwei 5,6-Expoxide.
    Abstract: Resume Les techniques chromatographiques sur couche mince ont été utiliseés dans l'étude des carotenoides des feuilles du thé. Cette methode a permis de bonnes séparations en une demie heure avec de petites quantités de materiaux de départ. De plus, elle permet l'utilisation des produits corrosifs sur la couche mince. Les expériences ont été effectuées à l'aide d'une couche mince type Shandon. Les travaux préliminaires qualitatifs ont montré la présence de quatorze carotenoides dans les feuilles du thé au moins. La procédure d'extraction décrite contient la saponification, afin d'éliminer la chlorophylle et les lipides. La séparation chromatographique des carotines et des monohydroxy xanthophylles a été effectuée sur une couche mince silica-gel, tandis que, celle des polyhydroxy xanthophylles et des epoxides a été effectuée sur une couche mince de kieselguhr impregnée auparavant d'une huile végétale. Les valeurs de RF et des données chimiques sont presentées. Les neufs carotenoides identifiés sont carotène, phytoène, phytofluène, lycopène, caratène, cryptoxanthène, violaxanthène, luteène, zeaxanthène. Parmi les carotenoides non-identifiées se trouvent; deux carotenoides rouges, probablement des composés céto, et deux, 5, 6 époxides.
    Notes: Abstract Thin layer chromatographic techniques were used in the study of the carotenoids of the tea leaf. This method gave clear cut separations in half an hour and required small quantities of starting material. Another advantage being the ability to use corrosive reagents on the chromatoplate. Shandon thin layer chromatographic equipment was used. Preliminary qualitative work showed that at least fourteen carotenoids were present in the tea leaf. The extraction procedure described included a saponification to remove the chlorophylls and the lipids. The carotenes and the monohydroxyxanthophylls were separated on silica gel plates while the polyhydroxyxanthophylls and epoxides were separated on kieselguhr plates which had been previously impregnated with vegetable oil. The Rf values and other chemical data were presented. The nine carotenoids identified were β-carotene, phytoene, phytofluene, lycopene, γ-carotene, cryptoxanthin, violaxanthin, lutein and zeaxanthin. Among the unidentified carotenoids were two red carotenoids, probably keto compounds, and two 5,6 epoxides.
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Plant and soil 55 (1980), S. 3-7 
    ISSN: 1573-5036
    Keywords: Mulch ; Nitrate reductase ; Tea clones ; Yield
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Nitrate reductase activity of the terminal bud of tea shoots was greater than that in mature leaves, and exhibited greater activity in triethanolamine HCl−KOH buffer than in phosphate or Clark and Lubs buffers. There was some correlation between yield characteristics of different tea clones and the level of nitrate reductase activity in the terminal bud, and mulching of plants was found to cause a significant increase in activity of the enzyme.
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Plant and soil 55 (1980), S. 9-15 
    ISSN: 1573-5036
    Keywords: Acetate ; Pupation ; Saponin ; Sterol ; Tea ; Xyleborus fornicatus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The addition of small quantity of potassium acetate to the fertilizer applied to tea bushes was an effective method of reducing infestation by the beetle pest,Xyleborus fornicatus. The mechanism of action of potassium acetate is discussed as being due to its conversion to saponins and/or sterol analogues which interfere with pupation of the beetle larvae.
    Type of Medium: Electronic Resource
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  • 6
    Publication Date: 1980-02-01
    Print ISSN: 0032-079X
    Electronic ISSN: 1573-5036
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Published by Springer
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  • 7
    Publication Date: 1980-02-01
    Print ISSN: 0032-079X
    Electronic ISSN: 1573-5036
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Published by Springer
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  • 8
    Publication Date: 1963-09-01
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Springer Nature
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