Carbon-13 Cross-Polarization Magic-Angle Spinning Nuclear Magnetic Resonance for Measuring Proanthocyanidin Content and Procyanidin to Prodelphinidin Ratio in Sainfoin (Onobrychis viciifolia) Tissues
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چکیده
منابع مشابه
Chemical and carbon-13 cross-polarization magic-angle spinning nuclear magnetic resonance characterization of logyard fines from British Columbia.
Phasing out beehive burners and rising costs for landfilling have increased the need to widen options for utilization of the smaller size fractions of woody wastes generated during log handling and sawmilling in British Columbia. We characterized several size classes of logyard fines up to 16 mm sampled from coastal and interior operations. Total C, total N, ash, and condensed tannin concentrat...
متن کاملCharacterization of high-tannin fractions from humus by carbon-13 cross-polarization and magic-angle spinning nuclear magnetic resonance.
Condensed tannins can be found in various parts of many plants. Unlike lignin there has been little study of their fate as they enter the soil organic matter pool and their influence on nutrient cycling, especially through their protein-binding properties. We extracted and characterized tannin-rich fractions from humus collected in 1998 from a black spruce [Picea mariana (Mill.) Britton et al.]...
متن کاملLarge Variability of Proanthocyanidin Content and Composition in Sainfoin (Onobrychis viciifolia)
Proanthocyanidins (PAs) in sainfoin (Onobrychis viciifolia Scop.) are of interest to ameliorate the sustainability of livestock production. However, sainfoin forage yield and PA concentrations, as well as their composition, require optimization. Individual plants of 27 sainfoin accessions from four continents were analyzed with LC-ESI-QqQ-MS/MS for PA concentrations and simple phenolic compound...
متن کاملInvestigating the Lignocellulosic Composition during Delignification Using Confocal Raman Spectroscopy, Cross- Polarization Magic Angle Spinning Carbon 13 - Nuclear Magnetic Resonance (cp/mas
Changes in the lignocellulosic composition of four hardwoods, i.e. Eucalyptus grandis camaldulensis (E. gc), E. grandis urophylla (E. gu), E. dunnii and E. nitens, were investigated during different delignification processes using confocal Raman spectroscopy, Cross-Polarization Magic Angle Spinning Carbon 13 Nuclear Magnetic Resonance (CP/MAS C-NMR) spectroscopy and Atomic Force Microscopy (AFM...
متن کاملHigh-resolution nuclear magnetic resonance spectroscopy of biological tissues using projected magic angle spinning.
High-resolution NMR spectra of materials subject to anisotropic broadening are usually obtained by rotating the sample about the magic angle, which is 54.7 degrees to the static magnetic field. In projected magic angle spinning (p-MAS), the sample is spun about two angles, neither of which is the magic angle. This provides a method of obtaining isotropic spectra while spinning at shallow angles...
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ژورنال
عنوان ژورنال: Journal of Agricultural and Food Chemistry
سال: 2018
ISSN: 0021-8561,1520-5118
DOI: 10.1021/acs.jafc.8b01215