Reference

Preparation and assay of water soluble vitamin solutions for use in total parenteral nutrition

Preparation and assay of water soluble vitamin solutions for use in total parenteral nutrition. Dagneaux, P. G. L. C. Krugers; Elhorst, J. T. Klein; Knuie, A. J.; Van der Zee, H. J. (Enschede 7500 GA, Neth.). Pharm. Weekbl., 119(11), 217-21 (Dutch) 1984. CODEN: PHWEAW. ISSN: 0031-6911. DOCUMENT TYPE: Journal CA Section: 63 (Pharmaceuticals) Section cross-reference(s): 18 Methods of prepn. and anal. are given for 2 solns. providing all water-sol. vitamins in sufficient amt. to meet the daily requirements in total parenteral nutrition. As it was not possible to prep. 1 soln. contg. all necessary vitamins, 2 solns. were formulated. One soln. contained thiamine [59-43-8], riboflavin Na phosphate [130-40-5], pyridoxine [65-23-6], nicotinamide [98-92-0], biotin [58-85-5] and dexpanthenol [81-13-0], and another, ascorbic acid [50-81-7] and folic acid [59-30-3]. Cyanocobalamin is not used in the prepn.; it must be administered sep.

The influence of fluorescence concentration quenching on the emission anisotropy of flavins in glycerine-water solutions

The influence of fluorescence concentration quenching on the emission anisotropy of flavins in glycerine-water solutions. Grajek, H.; Bojarski, C.; Zurkowska, G.; Drabent, R. (Dep. Phys., Univ. Agric. Technol., Olsztyn 10-957, Pol.). Photochem. Photobiol., 55(3), 381-7 (English) 1992. CODEN: PHCBAP. ISSN: 0031-8655. DOCUMENT TYPE: Journal CA Section: 74 (Radiation Chemistry, Photochemistry, and Photographic and Other Reprographic Processes) Section cross-reference(s): 73 Emission anisotropy r/r0 of flavomononucleotide (FMN) at concns. 10-5-10-1 mol/L in glycerin-water solns. of different viscosities was measured. In the range of high concns. the repolarization effect due to the sharp drop of the quantum yield is obsd. The exptl. results are compared with theor. expressions evaluated by taking into account both concn. and rotation depolarization. A good agreement on the values of the theor. parameters obtained from independent measurements is found. 56-81-5 and 130-40-5 are just another two chemicals used in this study. In the investigated systems the excitation energy transfer may be treated as a Markov process. .