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All Journal Jurnal Biologi Tropis Jurnal Pendidikan dan Pengabdian Masyarakat
Risnata, Richa Poetri
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Immunology & microbiology Other

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GAMBARAN TINGKAT PENGETAHUAN SISWA SMA ISLAM SYARIF IMAMUZZAHIDIN TENTANG ANEMIA Risnata, Richa Poetri; Puspitasari, Candra Eka; Noviana, Fitriani
Jurnal Pendidikan dan Pengabdian Masyarakat Vol. 5 No. 4 (2022): November
Publisher : FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (225.397 KB) | DOI: 10.29303/jppm.v5i4.4160

Abstract

Salah satu permasalahan gizi yang dihadapi remaja adalah anemia. Anemia merupakan suatu keadaan dimana kadar hemoglobin (Hb) dalam darah lebih rendah dari normalnya. Beberapa hasil penelitian menunjukkan prevalensi anemia banyak terjadi pada remaja putri dengan usia 10-18 tahun dengan persentase sebesar 57,1%. Salah satu penyebab anemia adalah masih minimnya pengetahuan remaja terkait anemia, oleh karena itu perlu dilakukan penyuluhan terkait pengetahuan remaja tentang anemia. Penyuluhan bertujuan untuk mengetahui tingkat pengetahuan remaja SMA Islam Syarif Imamuzzahidin terkait anemia. Metode yang digunakan berupa sosialisasi dengan pemberian pretest dan posttest yang sudah tervalidasi untuk melihat peningkatan pengetahuan yang terjadi. Hasil yang diperoleh mennunjukan 53,49% siswa menjawab benar sebelum adanya penyuluhan dan setelah dilakukan penyuluhan didapatkan nilai 56,98%. Sehingga dapat disimpulkan bahwa data tersebut menunjukkan adanya peningkatan pengetahuan siswa SMA Islam Syarif Imamuzzahidin sebesar 3,49% setelah pemaparan materi yang artinya kegiatan penyuluhan berjalan dengan baik.
Determination of Total Flavonoid Content and Antioxidant Activity of Avocado Stem Bark (Persea americana Mill) Ethanol Extract in Inhibiting DPPH Risnata, Richa Poetri; Hidayati, Agriana Rosmalina
Jurnal Biologi Tropis Vol. 24 No. 4 (2024): Oktober - Desember
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i4.7776

Abstract

Excessive free radicals in the body can trigger degenerative diseases. Therefore, antioxidant help is needed from outside the body to inhibit free radicals. Long-term use of synthetic antioxidants is limited because they can cause cancer. This encourages the development of natural antioxidants, one of which comes from avocado stem bark. Avocado stem bark contains flavonoids which act as antioxidants. This study aims to determine the total flavonoid content and antioxidant activity of avocado stem bark ethanol extract in inhibiting DPPH. Avocado stem bark was extracted using sonication followed by the identification of flavonoids using a tube test and thin layer chromatography test. Determination of total flavonoid content was carried out using the colorimetric method and antioxidant testing using the DPPH method. The results obtained were that the avocado stem bark was positive for containing flavonoids based on tube tests and thin layer chromatography. The results of determining the flavonoid content in the ethanol extract of avocado stem bark were 5.572 mgQE/g. The ethanol extract of avocado stem bark is a very strong antioxidant with an IC50 of 21.221 ppm. So it was concluded that avocado stem bark can be used as a natural antioxidant candidate.
Co-Authors Candra Eka Puspitasari Hidayati, Agriana Rosmalina Noviana, Fitriani