Although rosemary essential oil (EO) shows many biological activities, its topical benefits have not been clearly demonstrated. In this work, we assessed the effects on skin hydration and elasticity of rosemary EO after topical application via gel vehicles in human volunteers. To improve its topical efficacy, rosemary EO was loaded into lipid nanoparticles (NLCs) consisting of cetyl palmitate a...

Cyclic AMP was converted to its phosphotriesters according to the classical approach of phosphate activation with a sulfonyl chloride, followed by esterification with an alcohol. The methyl, ethyl, propyl, butyl and cetyl triesters were prepared, and some of their physical-chemical properties determined. Alkaline hydrolysis of these alkyl phosphotriesters resulted predominantly in ring opening....

This study focuses on the preparation, thermophysical and rheological characterization of phase change material nanoemulsions as latent functionally thermal fluids. Aqueous dispersions with fine droplets cetyl alcohol (with a melting temperature at ~321 K) were prepared by means solvent-assisted method, combining ultrasonication non-ionic anionic emulsifiers. Eicosyl (melting ~337 hydrophobic s...

Due to declining dairy cow fertility rates, there is great interest in developing tools for oestrus detection. Compounds in the volatile profile of oestrous cows are suggested as oestrus-specific, but consistent results have not been presented. Certain haematophagous arthropods can discriminate stages of the mammalian reproductive cycle based on host volatiles. This study investigated whether t...

Kinetic studies on the reduction of dithizone by stannous chloride was carried out in acidic medium (HCl) at room temperature. The study was made in the presence of cationic surfactant, Cetyl Trimethyl ammonium Bromide (CTAB) and anionic surfactant, Sodium Dodecyl Sulphate (SDS). The reduction of dithizone in the presence of CTAB is much faster than in the absence of surfactant in acidic medium...

Antioksidan adalah molekul yang menghambat oksidasi lain. dapat melindungi kulit dari kerusakan sel akibat sinar UV dan anti-penuaan. Daun teh mengandung 30-40% polifenol, merupakan antioksidan kuat. Tujuan penelitian ini untuk mengetahui formulasi lotion ekstrak daun hijau (Camellia sinensis) menghasilkan uji mutu stabilitas fisik baik serta memiliki aktivitas berdasarkan metode DPPH. dimasera...

Aloe vera has the potential to be used as a lip moisturizer because exudate contains lignin compounds that can help moisturize skin of lips. The use balm on lips function maintain moisture and treat chapped such dry lips, dark Lip or salve is waxy substance applied from mouth, purpose so they are not easily cracked. Usually for need protection, example in conditions low humidity temperature too...

The effects of the addition of submicrometer-sized colloidal silica spheres on the linear and nonlinear rheology of semidilute solutions of a viscoelastic gel are studied. For a 1.4 wt% solution of the surfactant CTAT, a peak in the zero-shear rate viscosity eta(0) is observed at approximately equal weight percents of silica and CTAT. This peak shifts to lower silica concentrations on increasin...