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Siti Aminah
Universitas Tadulako
Humanities Chemistry Education Mathematics Social Sciences

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Analysis of Lycopene Content and Antioxidant Activity Test of Katokkon Chili Extract (Capsicum chinense Jacq) Febryna V. Maddo; Siti Aminah; Afadil Afadil
Jurnal Akademika Kimia Vol. 10 No. 4 (2021)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (254.852 KB) | DOI: 10.22487/j24775185.2021.v10.i4.pp224-229

Abstract

This study aimed to determine lycopene contents and the antioxidant activity of katokkon chili extract. The extraction process of katokkon chili used the maceration method with the mixture of n-hexane : acetone : ethanol (2:1:1). The concentrated extract of katokkon chili was obtained through the evaporator process at a temperature of 40 ˚C. The analysis process used a UV-Vis spectrophotometer in which the absorbance reading was at λ = 472 nm. The average content of lycopene in katokkon chili extract was 1.457 mg/100g. Testing the antioxidant activity of katokkon chili extract used the DPPH (2,2-diphenyl-1-picrylhydrazyl) method with positive control the vitamin C. The absorbance readings for the antioxidant activity test were at λ = 517 nm. The test results showed that the antioxidant power of katokkon and vitamin C extracts in reducing DPPH free radicals had a similar result which was equally strong. The IC50 value for chili katokkon extract was 13.84 mg/L, and the IC50 value for vitamin C was 5.78 mg/L, so it can be concluded that chili katokkon can be an alternative source of natural antioxidants to replace vitamin C.
Analysis of Lycopene Content and Antioxidant Activity Test of Katokkon Chili Extract (Capsicum chinense Jacq) Febryna V. Maddo; Siti Aminah; Afadil Afadil
Jurnal Akademika Kimia Vol. 10 No. 4 (2021)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2021.v10.i4.pp224-229

Abstract

This study aimed to determine lycopene contents and the antioxidant activity of katokkon chili extract. The extraction process of katokkon chili used the maceration method with the mixture of n-hexane : acetone : ethanol (2:1:1). The concentrated extract of katokkon chili was obtained through the evaporator process at a temperature of 40 ˚C. The analysis process used a UV-Vis spectrophotometer in which the absorbance reading was at λ = 472 nm. The average content of lycopene in katokkon chili extract was 1.457 mg/100g. Testing the antioxidant activity of katokkon chili extract used the DPPH (2,2-diphenyl-1-picrylhydrazyl) method with positive control the vitamin C. The absorbance readings for the antioxidant activity test were at λ = 517 nm. The test results showed that the antioxidant power of katokkon and vitamin C extracts in reducing DPPH free radicals had a similar result which was equally strong. The IC50 value for chili katokkon extract was 13.84 mg/L, and the IC50 value for vitamin C was 5.78 mg/L, so it can be concluded that chili katokkon can be an alternative source of natural antioxidants to replace vitamin C.
Pengaruh Media Pembelajaran E-Modul terhadap Hasil Belajar Siswa pada Materi Kelarutan dan Hasil Kali Kelarutan Reni Reni; Ratman Ratman; Irwan Said; Siti Aminah
Journal of Education Research Vol. 7 No. 2 (2026)
Publisher : Perkumpulan Pengelola Jurnal PAUD Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37985/jer.v7i2.3778

Abstract

Perkembangan teknologi dalam bidang pendidikan mendorong pemanfaatan media pembelajaran yang inovatif dan interaktif untuk meningkatkan kualitas proses pembelajaran. Salah satu materi kimia yang sering dianggap sulit oleh siswa adalah Kelarutan dan Hasil Kali Kelarutan (Ksp) karena konsepnya bersifat abstrak dan memerlukan pemahaman yang mendalam. Penelitian ini bertujuan untuk mengetahui pengaruh penggunaan media pembelajaran E-Modul terhadap hasil belajar siswa kelas XI SMA Negeri 2 Sigi pada materi Kelarutan dan Hasil Kali Kelarutan. Penelitian menggunakan pendekatan kuantitatif dengan desain kuasi eksperimen berupa pretest-posttest control group design. Sampel penelitian berjumlah 62 siswa yang dipilih melalui teknik purposive sampling, terdiri atas 31 siswa pada kelas eksperimen yang menggunakan E-Modul dan 31 siswa pada kelas kontrol yang menggunakan buku paket. Data diperoleh melalui tes hasil belajar yang diberikan sebelum dan sesudah perlakuan. Hasil penelitian menunjukkan bahwa rata-rata nilai posttest kelas eksperimen lebih tinggi dibandingkan kelas kontrol. Uji hipotesis menghasilkan nilai signifikansi 0,001 (p < 0,05), yang menunjukkan bahwa penggunaan E-Modul berpengaruh signifikan terhadap hasil belajar siswa. Analisis ukuran efek juga menunjukkan pengaruh yang besar, sehingga E-Modul terbukti efektif dalam meningkatkan hasil belajar siswa.
Co-Authors Afadil Febryna V. Maddo Irwan Said Ratman Ratman Reni Reni