We show that gelation of weakly attractive colloids is remarkably similar to the colloidal glass transition. Like the glass transition, dynamic light scattering functions near gelation scale with scattering vector, and exhibits a two-step decay with a power-law divergence of the final decay time. Like the glass transition, static light scattering does not change upon gelation. These results sug...

In this study, thermal behavior of aqueous solutions of methyl cellulose (MC) at a constant temperature of 50 degrees C was analyzed. Various samples were studied for two consecutive heating-cooling cycles. The experiments with the solutions prepared using cold de-ionized (DI) water showed that the rate of gelation was higher for higher MC concentrations. However, the rate was slower during the...

Probiotics are effective coadjuvancy against human affections. To confer their beneficial effects to humans, probiotics adhere and colonize the intestine. Then, they must survive gastrointestinal conditions (~108–1010 cfu/day). However, concentration dose produce effect reduced. Synbiotics combination of prebiotics, can increase probiotics. Microencapsulation is an efficient approach protect sy...

AbstractColletotrichum gloeosporioides, a pathogen of anthracnose disease, can significantly reduce the quality mango (Mangifera indica) fruits. Chitosan as an antifungal agent fungal growth on post-harvest fruit agricultural products. In its development, chitosan has been widely improved through transformation into nanochitosan and formulation with metals. One metals that large affinity be for...

GELATION of hydrophilic colloids has frequently been studied in regard to its 'gelation time' (usually called the coagulation time) i.e. the time necessary for the gelatinising of a sol. The definition of 'gelation time,' however, is somewhat arbitrary and differs with the observer. Some observers consider a sol is gelatinised, when the vessel containing it can be inverted without spilling. Oth...

Kinetics as well as the evolution of the agarose gel topology is discussed, and the agarose gelation mechanism is identified. Aqueous high melting (HM) agarose solution (0.5% w/v) is used as the model system. It is found that the gelation process can be clearly divided into three stages: induction stage, gelation stage, and pseudoequilibrium stage. The induction stage of the gelation mechanism ...

The various molecular weight (MW) regenerated silk fibroins were prepared with different dissolution condition and the effect of MW on the gelation behavior of regenerated aqueous silk fibroin (SF) solution was investigated. The result of gelation time measurement indicated that the gelation of SF aqueous solution was accelerated by the increase of MW and SF concentration. When formic acid was ...

Temulawak (Curcuma xanthorrhiza) is known as a plant that has many health benefits, including antibacterial, anti-inflammatory, antidiabetic and anticancer. The purpose of this study was to formulate gel preparation containing temulawak extract nanoparticles sunscreen. formed must be evaluated physically including: organoleptic, homogentias, viscosity spreadability, well pH test SPF examination...

Abstract: Aim: The goal of this study was to develop colon-targeted nanoparticulate systems the anti-inflammatory agent Quercetin (QU) and evaluate formulation for various parameters that would allow active ingredient be released at a predetermined time location with better pharmaceutical therapeutic properties. Materials Methods: Quercetin-loaded chitosan nanoparticles were formulated purpose ...

In this study, an ion-activated ketotifen ophthalmic delivery system was developed by using a natural polysaccharide, deacetylase gellan gum. Its rheological characteristics, stability, in vitro gelation, release in vitro, and pharmacodynamic activity in vivo were investigated. The formulation had an optimum viscosity that will allow easy drop as a liquid, which then underwent a rapid sol-gel t...