نتایج جستجو برای: thiols
تعداد نتایج: 3579 فیلتر نتایج به سال:
The Maillard reaction not only results in the formation of flavor compounds, but also harmful by-products, including infamous toxicant acrylamide. Dietary acrylamide cannot be eliminated, its levels foods can minimized. This review discusses mechanisms inhibition, effectiveness under varied conditions, and limitations sulfur-containing compounds: thiols, sulfites, thioethers, thiosulfinates. Th...
Design of optical molecular probes for selective detection of aromatic thiols has attracted much attention. Although several types of probes have been proposed, all of them exhibit colorimetric or fluorometric response via irreversible reaction with aromatic thiols and cannot be reused. Here we report that a spiropyran dye is the first example of a reusable chemosensor for aromatic thiols. A co...
1. Time dependent spectral changes of BODIPY-S in the presence of thiols. ......S2 2. MS of BODIPY-S with GSH, Cys and Hcy..............................................S3 3. Photophysical spectra of BODIPY 4 and BODIPY-S +Cys..........................S4 4. Time dependent Spectral changes of S-S-BODIPY in the presence of thiols. ...S5 5. NMR and MS of the product of S-S-BODIPY with thiols..........
Nitrate (NO3-) and nitrite (NO2-) are known to be cardioprotective and to alter energy metabolism in vivo NO3- action results from its conversion to NO2- by salivary bacteria, but the mechanism(s) by which NO2- affects metabolism remains obscure. NO2- may act by S-nitrosating protein thiols, thereby altering protein activity. But how this occurs, and the functional importance of S-nitrosation s...
A simple and highly sensitive spectrophotometric method for the determination of biologically active thiols based on the fading of eosin-silver(I)-adenine ternary complex was established. In the determination of 6-mercaptopurine (MP), Beer's law was obeyed in the range 0.02-0.30 microg ml(-1), with an effective molar absorptivity at 562 nm and the relative standard deviation being 3.5 x 10(5) d...
A series of S-glucosides 11a-14a and their benzamido derivatives 11b-14b have been synthesized by reacting D-glucose with thiol groups of 5-(2’-aminophenylene)-1,3,4-oxadiazole-2thioles 7(a,b), 5-(2’-aminophenylene)-1,3,4-thiadiazole-2-thiols 8(a,b), 5-(2’-aminophenylene)-1,2,4triazole-3-thiols 9(a,b) and 5-(2’-aminophenylene)-4-N-amino-1,2,4-triazole-3-thiols 10(a,b). The thiols 7(a,b)-10(a,b)...
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