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Asrifaturofingah, Asrifaturofingah
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Biochemistry, Genetics & Molecular Biology Chemistry Education Environmental Science Medicine & Pharmacology Physics

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Analisis Aktivitas Senyawa Antioksidan Pada Berbagai Daun Tanaman Herbal dengan Metode DPPH Asrifaturofingah, Asrifaturofingah; Listiowati, Eni; Matsna, Fadhila Uzlifati; Putriliana, Salsabila Zulfa; Ulya, Nur Afni Himmatul
Jurnal Pharmascience Vol 11, No 1 (2024): Jurnal Pharmascience
Publisher : Program Studi Farmasi FMIPA Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jps.v11i1.16477

Abstract

Radikal bebas dapat berpengaruh terhadap kesehatan manusia, maka diperlukan senyawa antioksidan yang mampu menangkal radikal bebas. Penelitian ini memiliki tujuan mengidentifikasi senyawa antioksidan yang terdapat pada berbagai daun tanaman menggunakan metode DPPH. Metode  penulisan  literatur review  menggunakan  penelusuran  jurnal  dari Google  Scholar, dan Publish or Perish yang dipublikasi pada tahun 2014 – 2022 dengan berbagai kata kunci. Berdasarkan hasil literatur review diperoleh 10 jurnal, dengan variasi daun tanaman antara lain daun kersen (Muntingia calabura L.) daun afrika (Vernonia amygdalina Del.), daun salam (Eugenia polyantha), daun sirsak (Annona muricata L.), daun kesambi (Schleira oleosa), daun patikala (Etlingera elatior (Jack) R.M.Sm), daun putri malu (Mimosa pudica Linn), daun gedi hijau (Abelmoschus manihot (L.) Medik), daun ciplukan (Physalisan gulata L.), daun mangga (Mangifera indica L.). Hasil antioksidan yang paling kuat ditemukan pada daun kersen (Muntingia calabura L.) dengan nilai IC50 6,82 ppm dan 9,01 ppm melalui proses ekstraksi maserasi. Adapun aktivitas antioksidan dengan kategori terlemah yaitu daun Afrika (Vernonia amygdalina Del) dengan nilai IC50 371,98 ppm dan 557,058 ppm melalui proses ekstraksi maserasi. Kata Kunci: Daun Kesambi, Daun Kersen, Daun Sirsak, Daun Afrika, Daun Salam  Free radicals can affect human health, so we need antioxidant compounds that can counteract free radicals. This study aims to identify antioxidant compounds found in various plant leaves using the DPPH method. The literature review writing method uses journal searches from Google Scholar, and Publish or Perish which were published in 2014 – 2022 with various keywords. Based on the results of the literature review, 10 journals were obtained, with various types of plant kersen leaves (Mangifera indica L.), African leaves (Vernonia amygdalina Del.), salam leaves (Eugenia polyantha), soursop leaves ( Annona muricata L.), kesambi leaves (Schleira oleosa), patikala leaves (Etlingera elatior (Jack) R.M.Sm), putri malu leaves (Mimosa pudica Linn), gedi hijau leaves (Abelmoschus manihot (L.) Medik), ciplukan leaves ( Physalis gulata L.), mango leaves (Mangifera indica L.). The strongest antioxidant results were found in kersen leaves (Muntingia calabura L.) with IC50 values of 6.82 ppm and 9.01 ppm through the maceration extraction process. The antioxidant activity in the weakest category was African leaf (Vernonia amygdalina Del) with an IC50 value of 371.98 ppm and 557.058 ppm through the maceration extraction process.
Development of Weebly-Based Learning Media Utilizing Flipped Classroom and Team Games Tournament Approaches for Petroleum Topics Asrifaturofingah, Asrifaturofingah; Zamhari*, Muhammad
Jurnal IPA & Pembelajaran IPA Vol 8, No 4 (2024): DECEMBER 2024
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jipi.v8i4.41943

Abstract

The national curriculum seeks to create engaging, student-focused learning experiences. Despite this, chemistry education, particularly on petroleum topics, often relies on traditional methods such as lectures and printed materials, which fail to foster active student involvement. Consequently, there is a need to develop learning strategies that align with the curriculum's goals. This study focuses on creating and assessing the quality of Weebly learning media, utilizing a flipped classroom approach and teams games tournament for teaching petroleum content. The method applied in this study is Research and Development, by using the ADDIE (analysis, design, development, implementatio, evaluation) model. However, in this study the implementation stage was not carried out. The study's participants included three peer reviewers, a material expert validator, a media expert validator, five chemistry teachers from high schools, and thirteen high school students. Data was gathered using a questionnaire, which an instrument specialist had validated. The data obtained were analyzed descriptively qualitatively and descriptively quantitatively. The results of this study showed positive results with a material expert assessment score of 94.11% (very good), a media expert assessment of 85.96% (very good), a reviewer score of 94.56% (very good) and a respondent score of 94.87%. This study demonstrates that the developed learning media is of high quality and effectively supports chemistry education in schools, particularly on petroleum topics.
Co-Authors Listiowati, Eni Matsna, Fadhila Uzlifati Putriliana, Salsabila Zulfa Ulya, Nur Afni Himmatul Zamhari*, Muhammad