“The time-intensity profile and acceptance of traditional and light vanilla ice creams were determined in this study. Six samples of commercial Brazilian vanilla ice cream of three different brands, in traditional and light versions, were evaluated. The analysis of variance (ANOVA) and Tukey’s means test were applied using SAS software and the Internal Preference Mapping was prepared using the XLStat software. The time-intensity
analysis with 10 trained judges learn more and three repetitions revealed a bitter taste in one traditional sample (TRA3) and a residual bitter taste in two light samples (LIG1 and LIG3), which were less accepted (p <= 0.05) by the consumers (averages acceptance 5.2 and 5.3, respectivelly). A residual sweet taste was identified in one light sample (LIG2), however this
does not affect the acceptance of LIG2 and was preferred by the consumers. In the acceptance test (9-centimeter linear hedonic scale) with 117 consumers, flavor and texture were the attributes that influenced consumer acceptance check details (overall liking), and only brand 2 (TRA2 and LIG2) obtained good acceptance (averages 6.0 and 6.4, respectivelly) for both samples. Sample LIG2 was the preferred sample according to the Internal Preference Mapping. Sucralose and sorbitol showed to be the most appropriate sweetener system, in relation to aspartame and sodium cyclamate to replace sucrose in ice cream. The development of the time-intensity sensory profile and data from the acceptance tests obtained in the assessment of the traditional and light ice creams on the market could help the ice cream industry to adopt procedures to improve the quality and delineate new advertising strategies. (c) 2010 Elsevier Ltd. All rights reserved.”
“2-(3,4-Methdioxyphenyl)-4,6-bis(trichloromethyl)- 1,3,5-triazine (MBTTR) was used as a photoinitiator for the polymerization of acrylate monomer. Ultraviolet-visible absorption spectroscopy was used to investigate the photochemical behavior during the photo-physical
process. The photopolymerization kinetics were monitored by real-time Fourier transform infrared spectroscopy. The polymerization rates of the acrylates were significantly higher than those of the methacrylates. Protein Tyrosine Kinase inhibitor When MBTTR induced the polymerization of trimethylol-propane triacrylate, there was an optimum polymerization rate and the final conversion was obtained at 0.1 wt % MBTTR. MBTTR was an inefficient photoinitiator for ethyl vinyl. The final conversions of tripropylene glycol diacrylate induced by MBTTR and triazine/1,3-benzodioxole were similar. (C) 2011 Wiley Periodicals, Inc. J Appl Polym Sci 121:2013-2017, 2011″
“Pyrosequencing of PCR-amplified fragments that target variable regions within the 16S rRNA gene has quickly become a powerful method for analyzing the membership and structure of microbial communities. This approach has revealed and introduced questions that were not fully appreciated by those carrying out traditional Sanger sequencing-based methods.