Characteristics of Alcohol-Free Hand Sanitizer Containing Eucheuma spinosum Extract as An Active Compound

Eucheuma spinosum , red algae, contains secondary metabolites that act as antibacterial. It can be used as an active compound in the production of alcohol-free hand sanitizer. This research was aimed to determine the gram-positive and gram-negative antibacterial activity, pH, and viscosity of alcohol-free hand sanitizer containing E. spinosum extract. The results showed that the alcohol-free hand sanitizer containing 8% E. spinosum extract had characteristics in the form of a gel with the antibacterial activity of gram-positive bacteria ( Bacillus subtilis ) of 8.83±0.76 mm and gram-negative bacteria ( Escherichia coli ) of 8.67±0.58 mm, pH appropriate to pH of skin human (5.83±0.29), and viscosity following the hand sanitizer standard (2708 cps).