Characteristics and activity of chitosan from mud crab shells on acne bacteria: Staphylococcus aureus, S. epidermidis and Propionibacterium acnes

Abstract. Luthfiyana N, Bija S, Anwar E, Laksmitawati DE, Risalinda GL. 2022. Characteristics and activity of chitosan from mud crab shells on acne bacteria: Staphylococcus aureus, S. epidermidis Propionibacterium acnes. Biodiversitas 23: 6645-6651. Chitosan is a product chitin deacetylation, which has the potential to act as bacteria. The study aimed determine characteristics bacteria, i.e., aureus FNCC 0047, 0048 acnes ATCC 11827. research used descriptive method for analyzing quality antibacterial using analysis variants at 95% confidence interval with one factor, while addition much 0.25%; 0.5%; 0.75%; 1% three replications. results showed that value deacetylation degree (DD) was 76%. morphology shows irregular, wavy, porous shapes contains several elements: C, O, Ca, Al. concentrations 0.25%, 0.5%, 0.75%, an inhibition zone (9.5±0.71 mm, 10±0 11±0 13.5±0.71 mm), (9±0 12.5±0.71 P. (28.5±0.7 28.5±0.7 31±5.56 34.5±6.36 mm). concentration gives effectiveness in inhibiting growth This concludes could be anti-acne.