Nuvitasari, Nuvitasari (2026) FORMULASI DAN UJI ANTIOKSIDAN LOTION EKSTRAK ETANOL DAUN KENIKIR (Cosmos caudatus Kunth.) DENGAN VARIASI KONSENTRASI SETIL ALKOHOL. Other thesis, Universitas Setia Budi.
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Abstract
Daun kenikir (Cosmos caudatus Kunth.) mengandung senyawa flavonoid
dan fenolik yang berpotensi sebagai antioksidan alami. Pemanfaatannya dalam
sediaan lotion memerlukan formulasi dengan mutu fisik dan stabilitas yang baik, di
mana setil alkohol berperan sebagai ko-surfaktan dan penstabil. Penelitian ini
bertujuan untuk mengetahui pengaruh variasi konsentrasi setil alkohol terhadap
mutu fisik, stabilitas, dan aktivitas antioksidan lotion ekstrak etanol daun kenikir.
Ekstrak daun kenikir diperoleh melalui metode maserasi menggunakan
etanol 96% dan selanjutnya diformulasikan menjadi lotion dengan konsentrasi
ekstrak daun kenikir sebesar 7%, serta variasi konsentrasi setil alkohol 2%, 3%, dan
4%. Evaluasi meliputi uji mutu fisik dan stabilitas menggunakan metode cycling
test. Formula terbaik selanjutnya diuji aktivitas antioksidannya dengan metode
DPPH dan dianalisis secara statistik menggunakan one way ANOVA.
Hasil penelitian menunjukkan bahwa variasi konsentrasi setil alkohol
berpengaruh terhadap mutu fisik dan stabilitas sediaan lotion. Formula dengan
konsentrasi setil alkohol 3% merupakan formula terbaik karena memiliki
karakteristik fisik dan stabilitas paling optimal serta menunjukkan aktivitas
antioksidan kuat dengan nilai IC₅ ₀ sebesar 66,92 ppm.
Kenikir leaves (Cosmos caudatus Kunth.) contain flavonoid and phenolic
compounds that have potentialas natural antioxidants. Their use in lotion
preparations requires formulations with good physical quality and stability, in
which cetyl alcohol acts as a co-surfactant and stabilizer. This study aims to
determine the effect of varying cetyl alcohol concentrations on the physical quality,
stability, and antioxidant activity of kenikir leaf ethanol extract lotion.
Kenikir leaf extract was obtained through maceration using 96% ethanol
and subsequently formulated into a lotion with a kenikir leaf extract concentration
of 7%, and varying cetyl alcohol concentrations of 2%, 3%, and 4%. Evaluation
included physical quality and stability tests using the cycling test method. The best
formula was then tested for antioxidant activity using the DPPH method and
analyzed statistically using one-way ANOVA.
The results of the study showed that variations in cetyl alcohol
concentration affected the physical quality and stability of the lotion formulation.
The formulation with a cetyl alcohol concentration of 3% was the best formulation
because it had the most optimal physical characteristics and stability and showed
strong antioxidant activity with an IC₅ ₀ value of 66.92 ppm.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Antioxidants, Cetyl alcohol, kenikir leaves, lotion Antioksidan, Setil alkohol, Daun kenikir, Lotion |
| Subjects: | R Medicine > R Medicine (General) R Medicine > RL Dermatology R Medicine > RS Pharmacy and materia medica |
| Divisions: | Universitas Setia Budi > Fakultas Farmasi > S1 Farmasi |
| Depositing User: | Unnamed user with email baa.si@setiabudi.ac.id |
| Date Deposited: | 17 Sep 2026 03:29 |
| Last Modified: | 17 Sep 2026 03:29 |
| URI: | https://eprints.setiabudi.ac.id/id/eprint/628 |
