Abstract:
The objectives of this research were to 1) develop extraction processes to get the mixed extracts from leaves of Khanun (cv. Ta-buai) and fruits of Ma-khwaen having anti-microbial and inhibition of the enzyme tyrosinase activity, 2) analyze the chemical composition of the extracts, 3) develop formulation of acne mask from the mix extract and perform the physical test of the products, 4) test in vitro anti-acne assessment of the acne mask, and 5) study results of training workshops on analysis of the steroid-terpenes composition in leaves of Khanun and fruits of Ma-khwaen. The dry powder of leaves of Khanun and fruits of Ma-khwaen were extracted by various methods as maceration, reflux extraction and maceration with ethanol-water. The crude extracts were tested against acne-causing microbial by the paper disk agar diffusion method. TLC was used to analyze the chemical compositions. Markers were determined by HPLC. The dopachrome microplate method was used to assay the anti-enzyme tyrosinase activity. The acne mask product was developed by comprising of the appropriate mixed extract. A training workshop was organized for interested people.The results showed that:1) Maceration with ethanol-water was suitable extraction process for dry leaves of Khanun and dry fruits of Ma-khwaen. The mixed extract inhibited 5 strains of acne-causing bacteria including Propionibacterium acnes DMST 14916, Staphylococcus aureus DMST 8013, S. aureus DMST 8840, S. epidermidis DMST 12228 and Streptococcus pyogenes DMST 17020. The mixed extract inhibited the enzyme tyrosinase at the IC50 0.20 mg/ml, Which compared to standard kojic acid solution (IC50 0.00002 mg/ml).2) The chemical composition analysis found that leaves of Khanun and fruits of Ma-khwaen had steroid-terpenes and flavonoids, but no alkaloid was detected.3) The process development of acne mask containing the mixed extract from leaves of Khanun and fruits of Ma-khwaen revealed that formula 4 was the best formulation according to physical properties evaluation on physical appearance, color, viscosity, separation, odor and pH.4) The in vitro anti-acne assessment revealed that the acne mask was not active against tested microbials. However, the use of the acne mask could reduce inflamed acne in our volunteers.5) Result of training workshop on analysis of the steroid-terpenes composition in leaves of Khanun and fruit of Ma-Khwaen for 30 participants exhibited that the trainees knowledge before and after training were significantly different (p<.01), and the satisfaction was very good at the average of 3.79