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All Journal Dalton : Jurnal Pendidikan Kimia dan Ilmu Kimia Jati Emas (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat)
Janrigo Klaumegio Mere
Universitas Timor
Agriculture, Biological Sciences & Forestry Chemistry Economics, Econometrics & Finance Education Engineering Public Health Social Sciences

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PENENTUAN KADAR FENOLIK TOTAL DAN UJI AKTIVITAS ANTIOKSIDAN TUMBUHAN Ziziphus mauritiana LAMK., ASAL PULAU TIMOR KABUPATEN TIMOR TENGAH UTARA Noviana Mery Obenu; Emilia Juliyanti Bria; Janrigo Klaumegio Mere; Maria Erlinita Kehi; Maria Dacosta Seuke; Henisan Florida Bete
Dalton : Jurnal Pendidikan Kimia dan Ilmu Kimia Vol 9, No 1 (2026)
Publisher : Universitas Islam Kalimantan MAB Banjarmasin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31602/dl.v9i1.22978

Abstract

Ziziphus mauritiana Lamk., (bidara/kom/kabuka) secara tradisional dimanfaatkan oleh masyarakat Pulau Timor, Kabupaten TTU-NTT, sebagai obat kanker payudara dan ginjal. Penelitian ini bertujuan menganalisis kandungan fitokimia, kadar fenolik total, dan uji aktivitas antioksidan ekstrak metanol daun, kulit batang, dan kulit akar bidara asal wilayah tersebut. Ekstraksi dilakukan dengan metode maserasi menggunakan pelarut metanol. Analisis fitokimia menunjukkan ketiga ekstrak mengandung senyawa tanin, fenolik, flavonoid, dan saponin, tanpa alkaloid, sedangkan senyawa steroid dan triterpenoid hanya terdeteksi pada ekstrak kulit akar. Kadar fenolik total tertinggi terdapat pada ekstrak kulit batang (7,9364 mg GAE/g), diikuti kulit akar (5,9984 mg GAE/g) dan daun (3,2698 mg GAE/g). Uji aktivitas antioksidan menggunakan metode DPPH menunjukkan nilai IC 50 masing-masing ekstrak berkisar antara 122,8977–158,9256 μg/mL termasuk dalam kategori sedang. Hasil ini menunjukkan bahwa Ziziphus mauritiana Lamk., berpotensi dikembangkan sebagai sumber senyawa antioksidan alami.
Empowerment of the Dahlia Farmers Group in the Introduction and Development of Lemongrass as a Mosquito Repellent for Dengue Fever Agents: Pemberdayaan Masyarakat Kelompok Tani Dahlia Dalam Pengenalan Dan Pengembangan Serai Wangi Sebagai Reppelent Nyamuk Untuk Pencegahan penyakit DBD Noviana Mery Obenu; Janrigo Klaumegio Mere; Maria Magdalena Kolo; Yolanda Getrudis Naisumu; Eduardus Edi; Matius Stefanus Batu
JATI EMAS (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat) Vol. 10 No. 3 (2026): Jati Emas (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat)
Publisher : DPD Jatim Perkumpulan Dosen Indonesia Semesta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36339/je.v10i3.504

Abstract

Dengue Hemorrhagic Fever (DHF) is a disease caused by the dengue virus, transmitted through the bite of the Aedes aegypti mosquito. The high number of DHF cases is influenced by a weak immune system and high mosquito population density. People generally use synthetic insecticides to prevent mosquito bites, but long-term use, such as mosquito coils and lotions containing DEET, has the potential to cause side effects. Therefore, safer and more environmentally friendly alternatives are needed, such as botanical insecticides. Citronella (Cymbopogon nardus L.) is one plant that has the potential to be a mosquito repellent because it contains the compounds geraniol, citronellal, and citronellol. Although some members of the Dahlia farmer group have citronella plants in their yards, their use as a mosquito repellent has not been optimized. Community Service (PKM) activities are carried out through outreach and training on making bio-spray from citronella as a mosquito repellent for dengue prevention. This activity aims to educate the public, especially housewives who are members of the Dahlia farmer group, about the dangers of dengue fever, the risks of long-term use of chemical insecticides, and the development of plant-based bio-sprays as an alternative solution to reduce the number of dengue fever transmissions.
Co-Authors Edi, Eduardus Emilia Juliyanti Bria Henisan Florida Bete Kolo, Maria Magdalena Maria Dacosta Seuke Maria Erlinita Kehi Matius Stefanus Batu Noviana Mery Obenu Yolanda Getrudis Naisumu