A linear correlation was found between the visible and SW-NIR spectroscopy and parameters such as microbiological counts, K-1 and T-VBN indexes. (C) 2010 Elsevier Ltd. All rights reserved.”
“Earlier published rheological data of methyl methacrylate (MMA) heated and isothermally polymerized at temperatures between 50 and 80 degrees C have been reanalyzed using three semiempirical models of viscosity advancement including a modified Boltzmann sigmoidal model, a microgel model

for cure, and a first-order isothermal kinetic model. These alternative models possessed few fitting parameters and could be used without requiring more experiments to be run. For each dataset as a function of temperature, the analysis resolved time constants associated with both the induction time for polymerization and the rate of viscosity rise, which were inversely related selleck chemical to the polymerization temperature. We found the sigmoidal model the most

robust to accommodate nonlinearities in viscosity advancement with radical polymerization of MMA. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 120: 1367-1371, 2011″
“The marama bean from Southern Africa has proven to be a source for production of various healthy food products. In order to exploit its commercial potential, it is important to know its chemical composition in more detail. In this study, marama beans from different geographical sites and harvest years were analyzed by use of infrared, near Selleck Bafilomycin A1 infrared. Raman, and H-1 as well as

C-13 nuclear magnetic resonance spectroscopy. These techniques can measure single beans in a rapid and non-destructive manner. By comparative application, the qualitative composition of the marama bean was explored in detail, revealing large amounts of protein, dietary selleck chemicals fiber and unsaturated fat. The carbohydrate fraction was largely present as pectins and a minor fraction of smaller water soluble carbohydrates were tentatively assigned to raffinose. It is characteristic that the beans do not contain starch or beta-glucans and that the water soluble part of the proteins/peptides have a high content of the aromatic amino acid tyrosine. (C) 2010 Elsevier Ltd. All rights reserved.”
“The synthesis of functionalized fullerene-C-60 (C-60) was performed using living anionic polymerization. The metalation of the benzylic hydrogen atom on toluene or p-substituted toluene was conducted with the alkyllithium/amine system, and examined by living anionic polymerization of 1,3-cyclohexadiene. The number of carbanions bonded onto C-60 was estimated by the grafting reaction of living polymer onto C-60. The tert-butyllithium/N,N,N’,N’-tetramethylethylenediamine system was an effective metalation reagent, and toluene-, p-xylene-, 4-methyltriphenylamine-functionalized C(60)s having good solubility were successfully synthesized. (C) 2010 Wiley Periodicals, Inc.