Chutimon Satirapipathkul

The Entrapment of Vitamin E in Nanostructured Lipid Carriers of Rambutan Seed Fat for Cosmeceutical Uses

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.

Polysaccharide-Based Film of Cassia fistula and it's Antibacterial Activity

The film-forming potential of isolate of seed polysaccharide from Cassia fistula was investigated. Increasing the glycerol concentration in the film increased elongation at break, film solubility and water vapor permeability but decreased tensile strength (TS). The film impregnated with the acetone extract of Atractylodes lancea was assessed for inhibition of Escherichia coli and Staphylococcus aureus. The obtained results showed that the films exhibited antibacterial activity against both bacterial strains. Disc-diffusion assay revealed that the film resulted in a larger inhibition zone around the film on Staphylococcus aureus than it did on Escherichia coli at the same extract concentrations (0.1 to 0.9 wt %). It can be seen that the film has satisfactory physical and antibacterial properties.

Natural Polysaccharide-Based Films and their Antibacterial Activities

The polysaccharides from seeds of Cassia fistula and Delonix regia were used to prepare the films. After added with Quercus infectoria extracts, 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 subtilis and Staphylococcus 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.

Solid Lipid Nanoparticles from Active Compounds of Mango Seed Kernel Extract

The bioactive compounds in Mango seed kernel have high antioxidant activities which can be used as an ingredient in cosmetic products. The aim of this study was to improve the stability of bioactive compound in seed kernel extract by preparation in the form of solid lipid nanoparticles (SLN). Solid lipid nanoparticles (SLN) were prepared by high-speed homogenization technique. The effect of formulation on introduction the extract in to the base solid lipid nanoparticle system was investigated. At the optimal condition, the particle size was 329.1 nm. The highest load efficiency was 89.12%. The physical stability under the different storage temperature for 15 days indicated that the mango kernel extract entrapped in nanoparticles showed good stability. No obvious changes of clarity and degradation were found.

Preparation of Nanoemulsion from Sacha Inchi Oil/Water by Emulsion Phase Inversion Methods

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 Synergistic Activity of the Extracts from Mango and Tamarind Gum in Cotton Fabric Finishing

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.

Controlled Release of Quercus infectoria Extract from Jackfruit Starch-Konjac Glucomannan Film

Jackfruit (JS)-konjac glucomannan (KGM) blend films were prepared using different concentrations of JS, KGM and glycerol. Their mechanical properties were determined. All the films exhibited significantly higher values of tensile strength and elongation at break than those of neat JS films. The values varied considerably depending on KGM and glycerol content. Quercus infectoria extract was embedded into the films and its release characteristics were controlled by changing the initial KGM content. This study suggests that the blend film has a potential use for advanced controlled release of bioactive extracts.

The Synergistic Activity of the Extracts from Mango and Cassia fistula Polysaccharide in Cotton Fabric Finishing

This study focused on the production 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. The polysaccharide from Cassia fistula seed was used as a natural mordant and compared with general chemical mordants. Treated fabrics were tested for antimicrobial activities against Gram-positive cocci and Gram-negative rods. It was found that the treated fabrics combined with natural mordant were more effective against both pathogenic bacteria. From the results, the polysaccharide from Cassia fistula seed could provide the synergic antibacterial activity when applied with the extracts from mango seed and used as substitutes for synthetic textile chemicals.

Controlled Release of Atractylodes lancea Extract from Rice Starch-Konjac Glucomannan Film

Rice starch (RS)-konjac glucomannan (KGM) blend films were prepared using different concentrations of RS, KGM and glycerol. Their mechanical properties were determined. All the films exhibited significantly higher values of tensile strength and elongation at break than those of neat starch films. The values varied considerably depending on KG and glycerol content. The Atractylodes lancea extract was embedded into the films and its release characteristics were controlled by changing the initial KG content. This study suggests that the prepared film has a potential use for advanced controlled release of bioactive compounds.

Characterization of Konjac Glucomannan Film Containing the Extracts of Atractylodes lancea and Saussurea lappa

The antibacterial properties of konjac glucomannan (KGM) film containing two herb extracts (Atractylodes lancea and Saussurea lappa) at various concentrations was studied in this present work. This activity was tested against two pathogenic bacteria, Bacillus subtilis and Staphylococcus aureus. The results showed that the mean value of inhibition zone diameter of incorporated films with Saussurea lappa extracts were higher than those incorporating Atractylodes lancea extracts for all concentrations. The film incorporated with S. lappa extract had higher antibacterial activity against both bacteria than incorporated with A. lamcea. For all these levels, it can be seen that the KGM film had satisfactory physical properties and antibacterial activities.