CONCLUSION: Our results confirm recent criticisms that the professional quality of expertises does not suffice. This is hardly acceptable in face of the financial and personal consequences. There is an obvious need for further research using larger samples and for educational programmes on all levels.”
“Subcritical water extraction (SWE) is a very promising technique for obtaining bioactives (mainly antioxidants) from natural sources even if sometimes the high operation temperatures have been suggested as responsible for thermal degradation of bioactives the fact is that this type of extraction processes
may generate new bioactive (antioxidant) compounds The present study involved the analysis of antioxidants either naturally found in raw samples and/or those formed during extraction via Maillard LY2835219 purchase reaction and other chemical events Samples of different nature like microalgae (Chlorella vulgar’s) algae (Sargassum vulgare Porphyra spp Cystoseira aims marina Sargassum muticum Undaria pinnatifida and Halopits incurvus) and plants (rosemary thyme and verbena) were studied Amino acid availability sugar content fluorescence and absorbance at different wavelengths were determined to follow chemical changes due to
reactions such as Maillard caramelization and thermoxidation Folin reaction also provided information related to total phenol content of the samples ABTS(+) peroxyl as well as superoxide radical scavenging assays were used to measure the antioxidant capacity of the extracts Results
click here obtained from this study suggest that neoformed compounds derived from Maillard caramelization and thermoxidation reactions affect the overall antioxidant capacity of water subcritical extracts depending on the nature of the sample The brown algae U pinnatifida was the sample in which these chemical events contributed to a higher extent to improve the antioxidant capacity (from 0 047 to 1 512 mmol/g and from 45 356 to 1522 692 mu mol/g for the TEAC and ORAC(FL) methods respectively) when the extraction temperature was raised from 100 to 200 C To the best of our knowledge this is the first work supporting the formation of neoantioxidants in natural SB203580 complex matrices during subcritical water extraction (C) 2010 Elsevier Ltd All rights reserved”
“Uropathogenic Escherichia coli (UPEC) represent the predominant cause of urinary tract infections (UTIs). A key UPEC molecular virulence mechanism is type 1 fimbriae, whose expression is controlled by the orientation of an invertible chromosomal DNA element-the fim switch. Temperature has been shown to act as a major regulator of fim switching behavior and is overall an important indicator as well as functional feature of many urologic diseases, including UPEC host-pathogen interaction dynamics.