The aim of the present work was to extract the seed fat of Rambutan (Nephelium lappaceum L.) for developing nanostructured lipid carriers. Effect of material: solvent ratio and material size time on fat content were investigated. Nanostructured lipid carriers were prepared by melt-emulsification technique. Stearic acid (SA) and the rambutan seed fat (RF) was used as solid and liquid lipid, respectively. Surfactant was Tween 20 as well as Vitamin E was entrapment chemical. Effect of surfactant concentration on formation and stability of solid lipid nanoparticles (SLN) was investigated. At higher surfactant concentrations, NLC had smaller particle size and better stability of nanoparticles. At the optimal concentration of Tween 20 (5% w/w), NLC had a mean particle diameter of 139.43 ± 1.15 nm and a polydispersity index of 0.165 ± 0.017. Zeta potential was above 30 mV.

The aim of this study was to develop a process of extraction oxyresveratrol from Artocarpus lakoocha heartwood using a maceration method. The influences of types of solvent, a concentration of solvent, and time to extract on the yield of oxyresveratrol were studied. In addition, the antioxidant capacity of the extract was investigated. The quantitation of oxyresveratrol was measured by high-performance liquid chromatographyanalysis, and antioxidant activity was analyzed by 1,1'-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging assay. The results indicated that 70-percent ethanol solvent by volume for 6 hours could extract the optimum oxyresveratrol at 13.09 percent of the dry weight of Artocarpus lakoocha, and antioxidant efficiency had an IC 50 of 47.70 μg/ml.

The aim of this study was to develop a nanoemulsion of Sacha inchi oil for cosmetic application by the emulsion phase inversion (EPI) method. The influence of surfactant type and surfactant-to-oil ratio (SOR) on the particle size distributions of the nanoemulsion was studied. The results obtained showed that nanoemulsion droplet size, and stability of nanoemulsions were varied considerably. At optimal condition, the smallest size (41.43 ± 0.12 nm.) and high zeta potential values were obtained

The polysaccharides from seeds ofCassia fistulaandDelonix regiawere used to prepare the films. After added withQuercus infectoriaextracts, films were evaluated for the antibacterial properties by disk diffusion assay. The obtained results showed that the films exhibited antibacterial activity against both gram-positive (Bacillus subtilisandStaphylococcus aureus) and gram-negative (Escherichia coli) bacterium. The inhibition of bacterial was also observed under scanning electron microscopy (SEM). After treated with the antibacterial films, the shape of bacterial cells loses uniformity and become leaky and unhealthy.

This study focused on the development of antibacterial cotton fabric using natural bioactive agent as the extracts from mango (Mangifera indica L) seed. The cotton fabrics have been treated with the extracts from mango seed. Moreover, the tamarind gum from Tamarind indica seed was used as an alternative natural mordant and compared with general chemical mordants (alum and ferrous sulfate) in order to search for eco-friendly process. Treated fabrics were tested for antimicrobial activities against Gram-positive cocci and Gram-negative rods. We have found that in terms of antibacterial activity, the treated fabrics combined with natural mordant were more effective against both tested bacteria. From the results, the tamarind gum could provide the synergic antibacterial activity when applied with the extracts from mango seed and obviously used as substitutes for toxic textile chemicals.