Analyses of the chemical structures of melanoidins by 13C NMR, 13C and 15N CP-MAS NMR spectrometry.
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چکیده
منابع مشابه
Analyses of the Chemical Structures of Melanoidins by i 3 C and i 5 N CP - MAS NMR Spectrometry " i 3 c NMR , Fumitaka HAyAsE , Seon
alkyl methyl (IV), saturated, unsaturated or aromatic and carbonyl (V) carbons. The signals of IV and V disappeared on ozone-treatrnent. Studies using glycine-2-i3C revealed that most of the glycine is incorporated into the melanoidins, On iSN CP-MAS NMR, weak broad signals in the region of ON70ppm and strong signals in the region of 70-.120ppm with a shoulder at 120 -・ 170 ppm (VI) were observ...
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13C cross-polarization magic angle spinning (CP/MAS) NMR data for 2,2,5,7,8-pentamethylchroman-6-ol (2), 6-hydroxy-2,5,7,8-tetramethylchroman-2-carboxylic acid (Trolox c) (3) and its acetate (4), 2-methoxy-2,2,5,7,8-pentamethylchroman-6-ol (5), 2-hydroxy-2,2,5,7,8-pentamethylchroman-6-ol (6) and 2,2,5,7,8-pentamethylchroman (7) are reported. A deshielding of 7.7 ppm for the carboxylic carbon wa...
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In order to improve the stiff and brittle characteristics of pure Bombyx mori (B. mori) silk fibroin (SF) film in the dry state, glycerin (Glyc) has been used as a plasticizer. However, there have been very limited studies on the structural characterization of the Glyc-blended SF film. In this study, (13)C Cross Polarization/Magic Angle Spinning nuclear magnetic resonance (CP/MAS NMR) was used ...
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ژورنال
عنوان ژورنال: Agricultural and Biological Chemistry
سال: 1986
ISSN: 0002-1369,1881-1280
DOI: 10.1271/bbb1961.50.1951