Copper grasses

Chiorophyllin—copper complex, oil soluble—The chlorophyllin is obtained by extraction from a mixture of fescue and rye grasses. The chlorophyll is... 

Chlorophylhns (copper E 141 - Grass, lucerne, and nettle bluish green not claimed as natural on 3 CD... 

D. Gries, S. Klatt, and M. Runge, Copper-deficiency-induced phytosidero-phore release in the calcicole grass Hordelymus europaeus. New. Phytol 140 95 (1998). 

Franke, S., Grass, G., Rensing, C., and Nies, D.H., Molecular analysis of the copper-transporting efflux system CusCFBA of Escherichia coli, J Bacteriol, 185 (13), 3804-3812, 2003. 

Koehler, F.M., Rossier, M., Waelle, M., Athanassiou, E.K., Limbach, L.K., Grass, R.N., Gunther, D. and Stark, W.J. (2009) Magnetic EDTA coupling heavy metal chelators to metal nanomagnets for rapid removal of cadmium, lead and copper from contaminated water. Chemical Communications, (32), 4862—4864. 

Boon, G.T., L.A. Bouwman, J. Bloem, and P.F.A.M. Romkens. 1998. Effects of a copper-tolerant grass (Agrostis capillaris) on the ecosystem of a copper-contaminated arable soil. Environ. Toxicol. Chem. 17 1964-1971. 

Burton, D.J. and D.J. Fisher. 1990. Acute toxicity of cadmium, copper, zinc, ammonia, 3,3 -dichlorobenzidine, 2,6-dichloro-4-nitroaniline, methylene chloride, and 2,4,6-trichlorophenol to juvenile grass shrimp and killifish. Bull. Environ. Contam. Toxicol. 44 776-783. 

There have been only a few citations in the literature concerning the extraction and recovery of natural chlorophyll pigments. Chlorophylls, despite their high molecular weights, are soluble in pure CO2 (like pheophytin a at 500 bar and 55°C), or in the presence of an entrainer (like copper chlorophyllin at 60 bar and 20°C with 5% ethanol entrainer). The extraction of dried grass resulted in 1.56 wt.% yield of green components [79]. 

Table 3-1. The percentage of copper-tolerant individuals found in populations of grass species collected from a range of non-cupriferous soils, in relation to the presence or absence of the species on copper-polluted wastes, and the copper tolerance of collected adult plants (data of Ingram, 1988, from Baker and Proctor, 1990).

Chrycanthus Chukwuma, Evaluating baseline data for copper, manganese, nickel and zinc in rice, yam, cassava and guinea grass from cultivated soils in Nigeria, Sr., Agr. Ecosyst. Environ., 53 (1995), 47-61. 

Figure 28 Views of the Met-rich, Cu-binding site adjacent to the T1 copper in CueO (S. A. Roberts, A. Weichsel, G. Grass, K. Thakali, J. T. Hazzard, G. Tollin, C. Rensing, and W. R. Montfort, Proc. Natl. Acad. Sci. USA, 2002, 99, 2766-2771. 2002 National Academy of Sciences, USA)...

Rensing C, Grass G. Escherichia coli mechanisms of copper homeostasis in a changing environment. FEMS Microbiol. Rev. 2003 27 197-213. 

Mignani, G., Chevalier, C., Grass, F., Allmang, G., Morel, D. Synthesis of new unsaturated enynes, catalyzed by copper(l) complexes. Tetrahedron Lett. 1990, 31, 5161-5164. 

F., Peu, P., Martinez, J., and Hinsinger, P. (2005). Bioavailability and exhactability of copper and zinc in a soil amended with pig slurry effect of iron deficiency in the rhizosphere of two grasses. In Biogeochemistiy of Trace Elements in the Rhizosphere, ed. Huang, P. M., and Gobran, G. R., Elsevier, Amsterdam, The Netherlands, 337-363. 

This disease was not monitored in the Kadzharan biogeochemical province, where the pasture grasses are enriched by copper in comparison with molybdenum. The Cu excess protected the animals from high Mo intake. 

Roberts SA, Weichsel A, Grass G, Thakali K, Hazzard JT, Tollin G, Rensing C, Montfort WR (2002) Crystal structure and electron transfer kinetics of CueO, a multicopper oxidase required for copper homeostasis in Escherichia coli. Proc Natl Acad Sci USA 99 2766-2771... 

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