Zobrazeno 1 - 10
of 53
pro vyhledávání: '"Siegrid Schoch"'
Publikováno v:
Grasas y Aceites, Vol 53, Iss 3, Pp 289-297 (2002)
Sunflower (Helianthus annuus L.) oil was coloured with pigments extracted from green leaves. Different amounts (0, 200, 400, 600, and 800 ppm) of oleoresin extracted from oregano (Origanum vulgare L.) as antioxidant, were added to the coloured oil. A
Externí odkaz:
https://doaj.org/article/c61deba63096432694357eb44d79f6ff
Publikováno v:
Physiologia Plantarum. 121:556-567
The pigments of etiolated leaves of barley (Hordeum vulgare L.) were analysed during dark periods after flash illumination, and the results were compared with in vivo spectroscopy of the leaves. Pretreatment of the leaves with kinetin slightly stimul
Publikováno v:
European Journal of Biochemistry. 265:862-874
The enzyme NADPH:protochlorophyllide oxidoreductase (POR) is the key enzyme for light-dependent chlorophyll biosynthesis. It accumulates in dark-grown plants as the ternary enzyme-substrate complex POR-protochlorophyllide a-NADPH. Here, we describe a
Autor:
Siegrid Schoch, Mónica Ihl
Publikováno v:
Zeitschrift für Naturforschung C. 53:21-26
The activity of chlorophyllase (chlorophyll-chlorophyllido-hydrolase, EC 3.1.1.14) extracted from six different species was compared with enzyme extracted from leaves of Tree of Heaven. The chlorophyllase activity from Swiss chard was similar to th
Publikováno v:
Zeitschrift für Naturforschung C. 51:185-194
The chemical reduction of the formyl group of pheophorbide b with sodium cyanoborohy dride in methanol leads to 71-methoxy-and 71-hydroxy-pheophorbide a. The same reaction with zinc pheophorbide b yields in addition zinc pheophorbide a. This was ch
Publikováno v:
Journal of the American Chemical Society. 118:2606-2611
Protochlorophyllide a was isolated from dark-grown barley (Hordeum vulgare L.) seedlings. The circular dichroism spectrum was identical with that of protochlorophyll a prepared from chlorophyll a b...
Autor:
Christer Sundqvist, Wolfhart Rüdiger, Siegrid Schoch, Margareta Ryberg, Michael Helfrich, Bengt Wiktorsson
Publikováno v:
European Journal of Biochemistry. 229:291-298
A preparation of prolamellar bodies from wheat etioplasts was used as a source for NADPH-protochlorophyllide oxidoreductase (pchlide reductase). The enzyme was solubilized with Triton X-100 after reduction of the endogenous photoconvertible protochlo
Autor:
Christer Sundqvist, Wolfhart Rüdiger, Siegrid Schoch, Cristopher John Welch, Margareta Ryberg, Agneta Lindsten
Publikováno v:
Physiologia Plantarum. 80:277-285
Membrane fractions containing intact etioplasts, etioplast inner membranes, prolamellar bodies or prothylakoids from wheat (Triticum aestivum L. cv. Walde) were assayed for chlorophyll synthetase activity. Calculated on a protein basis, the etioplast
Publikováno v:
Biochemistry. 44(32)
Enzymes catalyzing two of the late steps of chlorophyll biosynthesis are NADPH:protochlorophyllide oxidoreductase (POR), responsible for the light-dependent reduction of protochlorophyllide to chlorophyllide, and chlorophyll synthase that catalyses t
Publikováno v:
Biological chemistry. 383(11)
The reaction of recombinant chlorophyll synthase from Avena sativa, expressed in Escherichia coli, was investigated. To verify the identity of the recombinant and native enzymes, reaction rates were determined for both enzyme preparations with severa