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Studi Fitokimia Kulit Nanas: Pengaruh Metode Pengeringan terhadap Kandungan Flavonoid Ekstrak Etanol: Studi Fitokimia Kulit Nanas: Pengaruh Metode Pengeringan terhadap Kandungan Flavonoid Ekstrak Etanol Wahyuningtiastuti, Ananta; Bulu, Atalia Tamo Ina; Priamsari, Margareta Retno; Solichah, Ayu Ina
Jurnal Farmasi & Sains Indonesia Vol 8 No 1 (2025)
Publisher : LPPM Sekolah Tinggi Ilmu Farmasi Nusaputera

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52216/jfsi.vol8no1p188-195

Abstract

Food waste refers to discarded food materials at the final stage of the food supply chain. One such waste product with potential for utilization in traditional medicine is pineapple peel (Ananas comosus (L.) Merr.), which contains various secondary metabolites, including flavonoids, alkaloids, saponins, and tannins. Among these metabolites, flavonoids are well-known for their antioxidant properties. This study aimed to compare the total flavonoid content in ethanol extracts of pineapple peel subjected to two different drying methods. The drying methods used were sun drying and oven drying at 50 °C. The dried pineapple peels were extracted using 96% ethanol through the Soxhlet extraction method. Phytochemical constituents were identified through colorimetric reactions and Thin Layer Chromatography (TLC). The total flavonoid content was determined colorimetrically using AlCl₃ reagent and measured by UV-Visible spectrophotometry at a wavelength of 439 nm, with quercetin used as the standard. The results indicated that the extract yields from the sun-dried and oven-dried samples were 5.60% and 5.75% (w/w), respectively. TLC analysis revealed Rf values of 0.85, 0.80, and 0.91. The total flavonoid content in the sun-dried sample was 35.44 ± 0.55 mgQE/g, while that in the oven-dried sample was 25.40 ± 0.98 mgQE/g. Statistical analysis using the Independent Sample t-test demonstrated a significant difference in total flavonoid content between the two drying methods.
Optimasi Formulasi Nanopartikel Gel Ekstrak Etanol Kayu Secang (Caesalpinia Sappan L.) Sebagai Antibakteri Terhadap Propionibacterium Acnes: Optimasi Formulasi Nanopartikel Gel Ekstrak Etanol Kayu Secang (Caesalpinia Sappan L.) Sebagai Antibakteri Terhadap Propionibacterium Acnes Maharani, Zahra Febriana; Akbar, Nanda Dwi; Priamsari, Margareta Retno
PHARMADEMICA : Jurnal Kefarmasian dan Gizi Vol 5 No 1 (2025): April - September
Publisher : LPPM-KI - POLTEKKES PIM (Formerly AKAFARMA-AKFAR PIM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54445/pharmademica.v5i1.80

Abstract

Nanoparticle gel is a colloid consisting of nanometer-sized particles made from cosmetic active ingredients or other materials that are evenly distributed in a gel matrix. The purpose of this study was to determine the antibacterial activity of nanoparticle gel preparations of sappanwood extract against Propionibacterium acnes. The sappanwood extract was extracted by remaceration 70% ethanol then the extract was tested for antibacterial activity at concentrations of 20, 40, 60, and 80% using Nutrient Agar media against P. acnes. The results showed that the minimum inhibitory concentration of sappanwood extract appeared at a concentration of 20%. Spreadability and adhesiveness were 5.90 ± 0.06 and 14.96 ± 0.01, respectively. The results of the statistical analysis test with one sample t-test showed a p value> 0.05 so that the response of spreadability and adhesiveness between predictions was not significantly different from the actual. The optimal formula of sappanwood extract gel nanoparticles has moderate antibacterial activity against P. acnes.