Here, we report on near-infrared and ATR/FT-IR spectroscopic measurements of magnesium stearate and potato starch powder blends. In the pharmaceutical and food industries, magnesium stearate is commonly used as a supplement in powder blends or granules for the purpose of lubrication and to minimize aggregation and adherence. However, excessive blending of magnesium stearate (MgSt) may lead to u...

The ultrasonic velocity measurements along with density and viscosity in the binary mixtures of zinc stearate acetone and calcium stearate acetone at 303 K are studied. It is used to evaluate the different thermo acoustical parameters along with the excess properties. The experimentally determined velocities have been compared with theoretically estimated values obtained using different empiric...

Catalytic effect of hydroxypropyl cellulose, hydroxypropylmethyl cellulose, glyceryl behenate and magnesium stearate in the presence of 50.9% - 76.4% humidity at 318 K on stability of quinapril hydrochloride (QHCl) was examined by HPLC method. The differences in kinetic mechanism of degradation of QHCl were observed. The effect of humidity on QHCl stability in the presence of hydroxypropyl cell...

octanoate or decanoate per mol of albumin caused a decrease in dye binding (dye/protein molar ratio 1 : 1), which, in contrast with additional fatty acid, was very pronounced: 1-8mol of palmitate or stearate resulted in a small, and apparently linear, displacement of Phenol Red. The displacement effect of 1-5 mol of oleate, linoleate or linolenate per mol of albumin was comparable with that of ...

Sugar fatty acid esters are practical importance and have a variety of applications that include surfactants and as an emulsifying agent. In this study, we report glucose stearate synthesis using lipase-Fe3O4 nanoparticles catalyst. The influence of various reaction factors, such as silica gel concentration, molar ratio of sugar/acid, reaction temperature and speed of agitation on esterificatio...

The synthesis of palmitic and stearic acids by soluble proteins from avocado mesocarp has been examined. Evidence suggests that palmitate is made de novo and stearate by elongation of a C16 precursor. While the synthesis of palmitate from malonyl CoA is arsenite insensitive, the elongation reaction from palmitate to stearate is arsenite sensitive. The pattern of synthesis of the two acids is ne...

The products of yeast fatty acid synthetase, under usual assay conditions, are palmitate (60%) and stearate (40%). Addition of stearyl-CoA decreases synthetase activity and increases relative amounts of stearate formed (-64%). The ratio of palmitate to stearate produced is also altered by changing the incubation temperatures. At temperatures of 30°C or above, the ratio of palmitate to stearate ...

Non-biodegradable polypropylene, which poses a serious threat to the environment, is most utilized material in air filtration systems. Moreover, under conditions of high temperature and humidity, electrostatic charge melt-blown nonwoven fabrics treated with traditional corona electrets will quickly dissipate. Here, biodegradable polylactic acid, calcium stearate, an innovative hydrocharging tec...