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All Journal Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Jeumpa
Siregar, Anita Rasuna Sari
Samudra University
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Environmental Science Immunology & microbiology Materials Science & Nanotechnology Physics

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UJI AKTIVITAS ANTIOKSIDAN EKSTRAK DAUN LIDAH MERTUA (Sansevieria masoniana Chahin) DENGAN METODE DPPH(1,1-Difenil-2-Pikrilhidrazil) Siregar, Anita Rasuna Sari Siregar
Jurnal Jeumpa Vol 7 No 1 (2020): Jurnal Jeumpa
Publisher : Department of Biology Education, Faculty of Teacher Training and Education, Samudra University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33059/jj.v7i1.2552

Abstract

Sansevieria adalah salah satu tanaman hias yang memiliki aktivitas antioksidan. Salah satu spesies dari genus sansevieria adalah Sansevieria masoniana Chahin yang diduga memiliki aktivitas antioksidan . Aktivitas antioksidan speies sansevieria ini masih belum diketahui sehingga perlu dilakukan penelitian. Penelitian ini bertujuan untuk menguji aktivitas antioksidan ekstrak daun lidah mertua (Sansevieria masoniana Chahin). Ekstrak daun lidah mertua (Sansevieria masoniana Chahin) diperoleh melalui metode maserasi menggunakan pelarut etanol 96% . Ekstrak yang telah diuapkan pelarutya hingga menjadi ekstrak kental kemudian dilakukan skrining fitokimia, hasil skrining ekstrak menunjukkan positif mengandung flavonoid dan saponin. Kemampuan ekstrak sebagai antioksidan ditentukan melalui peredaman radikal DPPH (1,1- difenil-2-pikrihidrazil) terhadap variasi konsentrasi ekstrak 12,5 ppm, 25 ppm, 50 ppm, 100 ppm, dan 200 ppm. Hasil akhir dari uji DPPH tersebut ialah radikal berubah warna dari ungu menjadi kuning dan serapannya diukur dengan spektrofotometer UV-Vis pada panjang gelombang 517 nm. Hasil uji aktivitas antioksidan yang dilakukan menghasilkan nilai IC50 sebesar 97,902 ppm yang menunjukkan bahwa aktivitas antioksidan ekstrak Sansevieria masoniana Chahin memiliki aktivitas antioksidan yang kuat.
Diversity, Economic Value, and Conservation Status of Macroinvertebrates in the Coastal Areas of East Coast of Aceh Province, Indonesia Sarjani, Tri Mustika; Mawardi, Abdul L.; Suryani, Hera Irma; Siregar, Anita Rasuna Sari
Jurnal Penelitian Pendidikan IPA Vol 11 No 10 (2025): October
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i10.11913

Abstract

This research aims to analyze the diversity, economic value, and conservation status of macroinvertebrates in the coastal areas of the east coast of Aceh Province. The research method involves surveying the coastal regions of the east coast of Aceh Province, with macroinvertebrate sampling conducted through purposive sampling based on varying environmental characteristics. A total of 6.056 macroinvertebrate individuals from 55 species belonging to three classes, namely Gastropoda, Bivalvia, and Crustacea, were collected from the coastal areas of Aceh. Gastropods dominated the sample, while crustaceans were the least represented. The highest utilization of macroinvertebrates comes from the Bivalvia class, reaching 100%, while the lowest comes from the Gastropoda class at only 34.62%. Overall, no macroinvertebrates living in the coastal areas of Aceh were found to be threatened with extinction, with only 10.91% having a status of least concern. In contrast, the rest have yet to be evaluated.
Co-Authors Abdul L. Mawardi Sarjani, Tri Mustika Suryani, Hera Irma