Abstract :
Belimbing wuluh leaf extract (Averrhoa bilimbi L.) has very strong
antioxidants. Wuluh starfruit extract needs to be made into preparations, one of
which is a transdermal patch for easy use, and is not sticky and can be easily applied
to the skin. This study aims to determine the optimal comparison of the use of
HPMC and PVP matrices for transdermal patch preparations, and to determine the
potential for antioxidant activity of transdermal patch preparations of starfruit leaf
extract.
Optimization of the formula for transdermal patch preparations of belimbing
wuluh leaf extract with a concentration of 30ppm with a comparison of the
combination of HPMC and PVP obtained from the Design Expert software version
12 using Simplex Lattice Design. The responses used included organoleptic, weight
uniformity test, thickness, pH, crease resistance. Verification of the optimum
formula with the One Sample T-test on SPSS. Antioxidant activity test on the
optimum formula using ABTS. Operating time in the 6th minute and a maximum
wavelength of 734 nm using a uv-vis spectrophotometer.
The results of the analysis showed that the ratio of HPMC and PVP was
0.09 grams: 0.09 grams, resulting in a desirability value of 0.976. The weight test
value is 0.78 ± 0.01, the pH test is 6.0 ± 0, the folding power test is 255.00 ± 0 and
the thickness test is 0.23 ± 0, the test results of the weight test value between the
optimal formulas and the prediction of simplex lattice design with One sample Ttest showed a significant difference, whereas in the pH test, thickness and folding
power showed no significant difference, which means valid. The results of
antioxidant testing on transdermal patch preparations had antioxidant activity
values with an average IC50 of 46.43 ± 0.07 which was classified as very strong.