Analysis nuclear magnetic resonance

The development and reports of methods for colorless chlorophyll derivative (RCCs, FCCs, and NCCs) analysis are relatively recent and the structures of the compounds are being elucidated by deduction from their chromatographic behaviors, spectral characteristics (UV-Vis absorbance spectra), mass spectrometry, and nuclear magnetic resonance analysis. The main obstacle is that these compounds do not accumulate in appreciable quantities in situ and, moreover, there are no standards for them. The determination of the enzymatic activities of red chlorophyll catabolite reductase (RCCR) and pheophorbide a monoxygenase (PAO) also helps to monitor the appearance of colorless derivatives since they are the key enzymes responsible for the loss of green color. ... [Pg.440]

Parisot D, MC Malet-Martino, P Crasnier, R Martino (1989) nuclear magnetic resonance analysis of 5-fluorouracil metabolism in wild-type and 5-fluorouracil-resistant Nectria haematococca. Appl Environ Microbiol 55 2474-2479. [Pg.292]

Ansede JH, PJ Pellechia, DC Yoch (2001) Ansede JH, PJ Pellechia, DC Yoch (2001) Nuclear magnetic resonance analysis of [l- C]dimethylsulfoniopropionate (DMSP) and [l- C]acrylate metabolism by a DMSP lyase-producing marine isolate of the a-subclass proteobacteria. Appl Environ Microbiol 67 3134-3139. [Pg.581]

T. Iwashita, Y. Mino, H. Naoki, Y. Suguira, and K. Nomoto, High-resolution proton nuclear magnetic resonance analysis of solution structures and conformational properties of muguneic acids and its metal complexes. Biochemistry 22 4842 (1983). [Pg.89]

Some Other Reagents for Nuclear Magnetic Resonance Analysis... [Pg.24]

Eads, T.M. 1999. Principles for nuclear magnetic resonance analysis of intact food materials. [Pg.92]

Ohkoshi, M. and Kato, A. (1992). Distribution of substituents in acetylated wood as determined by nuclear magnetic resonance analysis. In Pacific Rim Bio-Based Composites Symposium Chemical Modification of Lignocellulosics, Plackett, D.V. and Dunningham, E.A. (Eds.). ERl Bulletin, 176, pp. 25-32. [Pg.220]

Gidley, M. (1992). Nuclear magnetic resonance analysis of cereal carbohydrates. In R. J. Alexander, H. F. Zobel (Eds.), Developments in Carbohydrate Chemistry (pp. 163-192). The American Association of Cereal Chemists, St. Paul, Minnesota. [Pg.246]

G. A. Brine, K.G, Boldt, M.L. Coleman, E.E. Williams, T.M. Krcelic u. F.I. Carroll, Phencyclidine Relat. Arylcyclohexylamines Present Future Appl., Proc. Jt. Fr.-US Semin. Chem. Pharmacol., Present Future Ther. Appl. Drug Abuse Aspects Arylcyclohexylamines, NPP Books, Ann Arbour, Mich., 1983 , .Synthesis and Carbon-13-Nuclear Magnetic Resonance Analysis of Arylcyclohexylamines Related to Phe-nylcyclidine". [Pg.1334]

The distilled product is 97% pure and contaminated with 3% acetophenone (nuclear magnetic resonance analysis). Since the enamine is easily hydrolyzed and deteriorates on long standing, use of a freshly-distilled material is recommended. The checkers found that a-morpholinostyrene contaminated with 20% acetophenone could be used for the next step without any significant reduction in yield. [Pg.59]

Raoul S, Berger M, Buchko GW, Joshi PC, Morin B, Weinfeld M, Cadet J (1996)1 FI, 13C, and 15N nuclear magnetic resonance analysis and chemical features of the two main radical oxidation products of 2 -deoxyguanosine oxazolone and imidazolone nucleosides. J Chem Soc Perkin Trans 2 371-381... [Pg.327]

NUCLEAR MAGNETIC RESONANCE ANALYSIS OF NATURAL ORGANIC MATTER... [Pg.589]

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