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Suggested Immobilization Test

Michaud M, Poirier G, Lavigne G, Montplaisir J (2001). Restless legs syndrome scoring criteria for leg movements recorded during the suggested immobilization test. Sleep Med 2 317-321... [Pg.77]

Other plants such as potatoes, cauliflower, cherries, and soybeans and several fungi may also be used as sources of peroxidase enzymes. Soybeans, in particular, may represent a valuable source of peroxidase because the enzyme is found in the seed coat, which is a waste product from soybean-based industries [90]. In this case, it may be possible to use the solid waste from the soybean industry to treat the wastewaters of various chemical industries. In fact, the direct use of raw soybean hulls to accomplish the removal of phenol and 2-chlorophenol has been demonstrated [105]. However, it should be noted that this type of approach would result in an increase in the amount of solid residues that must be disposed following treatment. Peroxidases extracted from tomato and water hyacinth plants were also used to polymerize phenolic substrates [106], Actual plant roots were also used for in vivo experiments of pollutant removal. The peroxidases studied accomplished good removal of the test substrate guaiacol and the plant roots precipitated the phenolic pollutants at the roots surface. It was suggested that plant roots be used as natural immobilized enzyme systems to remove phenolic compounds from aquatic systems and soils. The direct use of plant material as an enzyme source represents a very interesting alternative to the use of purified enzymes due to its potentially lower cost. However, further studies are needed to confirm the feasibility of such a process. [Pg.470]

An obvious way to immobilize MTO would be by coordinative binding on a PVP resin. However, in our experience, peroxidized MTO is not efficiently retained on PVP. Two alternative approaches have been proposed. First, MTO was supported on Nb2Os, and its activity was tested in the epoxidation of stilbenes and of styrenes (382). However, competitive metathesis and pronounced hydrolysis of the epoxides to the diols were observed. A second approach was suggested by Neumann and Wang (383). In a strategy similar to that for H5PV2M010O40 (370), they adsorbed MTO in a surface layer of... [Pg.67]

The metal complexes, M +(acac)2 (M = Cu or Co), were observed to be bonded to the surface tether by a Schiff condensation reaction with the primary amine. The metal cations in these tethered complexes were used to activate t-butylhydroperoxide into radicals that reacted with the substrate, cis-pinane, to give mainly 2-pinane hydroperoxide with no observed formation of 2-pinanol. The selectivity to the pinane hydroperoxide was 93% for the immobilized Co(II) and 84% for the immobilized Cu(II) at 91 % substrate conversion. Blank reaction tests using the (1) oxidized carbon and (2) oxidized and hxd-functionalized carbon showed much lower activities ( 10-15% conversion) thus indicating that the tethered metal complexes were largely responsible for the observed activity. The subsequent reuse of the tethered catalysts eventually showed a constant activity ( 60% conversion) with reuse suggesting that the tethering method was effective in firmly attaching the metal ion to the surface. [Pg.89]


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See also in sourсe #XX -- [ Pg.63 ]




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