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All Journal Jurnal Inovasi Pembelajaran Kimia (Journal Of Innovation in Chemistry Education) Indonesian Journal of Chemical Science and Technology
Nora Susanti
State University of Medan
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Energy Materials Science & Nanotechnology Social Sciences

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Pengembangan Bahan Ajar Interaktif Berbasis Website Pada Topik Larutan Elektrolit dan Non Elektrolit Fanny Fashiri; Nora Susanti
Jurnal Inovasi Pembelajaran Kimia (Journal Of Innovation in Chemistry Education) Vol 2, No 2 (2020): OKTOBER 2020
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (605.327 KB) | DOI: 10.24114/jipk.v2i2.19789

Abstract

This study aims to know the feasibility of an interactive learning material based on a website that innovated based on BSNP. The research method used Research and Development (R&D) with the ADDIE models which consist of five stages are analysis, design, development, implementation, and evaluation. Data collected technique used for feasibility was a questionnaire of BSNP was given to experts lecture. The analysis results of this research are the interactive learning material based on the website was feasible that used questionnaire of BSNP showed a score of the truth, breadth, and depth of concept aspects was 4.66, material and question device aspects was 4.56, language structure aspects was 5.0, display of media aspects was 4.83, software engineering aspects was 4.33, usefulness aspects was 4.66. The average score overall validation of interactive learning material based on the website on the electrolyte and nonelectrolyte solution topic was 4.67. The average score overall validation of interactive learning material based on the website on the electrolyte and nonelectrolyte solution topic shows that this media is very eligible and can be used in the learning process.
Antibacterial Activity of Ethanol Extract of Nettle Leaves against Cutibacterium acnes and Pseudomonas aeruginosa Zuhairiah Nasution; Fira Yunita; Murniaty Simorangkir; Saronom Silaban; Nora Susanti
Indonesian Journal of Chemical Science and Technology (IJCST) Vol. 9 No. 2 (2026): JULY 2026
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/ijcst.v9i2.75052

Abstract

Acne vulgaris is a common skin disorder associated with the growth of Cutibacterium acnes and Pseudomonas aeruginosa. This study aimed to evaluate the antibacterial activity of ethanol extract of nettle leaves (Urtica dioica) against both bacteria. The extract was obtained by maceration using 96% ethanol and subjected to phytochemical screening. Antibacterial activity was tested using the disc diffusion method at concentrations of 200, 400, and 800 mg/mL. The findings demonstrated that the extract contained alkaloids, phenolics, flavonoids, steroids, and saponins. The inhibition zones against Cutibacterium acnes were 14.17±0.21 mm, 16.03±0.76 mm, and 17.37±1.33 mm, while against Pseudomonas aeruginosa they were 9.63±0.51 mm, 12.23±0.40 mm, and 14.33±0.47 mm, respectively. Statistical analysis showed significant differences among treatments (p<0.05). These findings indicated that Urtica dioica leaf extract may serve as a potential natural antibacterial agent against acne-associated bacteria.
Co-Authors Fanny Fashiri Fira Yunita Murniaty Simorangkir Saronom Silaban Zuhairiah Nasution