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EVALUASI AKTIVITAS TABIR SURYA EKSTRAK ETANOL DAUN GENJER (Limnocharis flava) SECARA SPEKTROFOTOMETRI Haryanti, Pipin Dwi; Kurniawati, Zenia Lutfi; Rahmadani, Agung
Lantanida Journal Vol 14 No 1 (2026): January-June 2026
Publisher : UIN AR-RANIRY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/lj.v14i1.34301

Abstract

The dangers of ultraviolet (UV) radiation exposure to skin health have triggered the need for safe natural sunscreen ingredients. This study aims to assess the efficacy of ethanol extract of genjer leaves (Limnocharis flava) as an active ingredient in sunscreen preparations, with an emphasis on the analysis of SPF values ​​and total flavonoid levels. The methodology used is an in vitro laboratory experiment. The extraction procedure was carried out through a maceration technique using 96% ethanol solvent (1:10 ratio). Flavonoid levels were measured using the AlCl3 colorimetric method with quercetin as the standard, while SPF calculations were carried out via a UV-Vis spectrophotometer in the range of 290–320 nm with varying levels of 200, 400, and 600 ppm. The research data revealed that the extract contained a total flavonoid content of 267.58 ± 1.21 mg QE/g with a yield of 18.2%. The study results confirmed a unidirectional correlation between the extract concentration level and skin protection power. The most optimal effectiveness was detected at a concentration of 600 ppm, which resulted in an SPF of 15.46 (ultra protection). Furthermore, the erythema transmission (%Te) value of 3.38% and pigmentation (%Tp) of 2.66% placed this extract in the sunscreen category. In conclusion, genjer leaves have very promising prospects as a natural sunscreen component due to their capability to absorb both UV-A and UV-B radiation simultaneously.
Development of Sanak Belajar Mobile Learning Media on Atomic Structure Material Ridwansyah, Muhammad; Akbar, Muhammad; Nurhadi, Mukhamad; Kusumaningtyas, Pintaka; Rahmadani, Agung
Journal of The Indonesian Society of Integrated Chemistry Vol. 18 No. 1 (2026): Journal of The Indonesian Society of Integrated Chemistry
Publisher : Pendidikan Kimia FKIP Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jisic.v18i1.50468

Abstract

Mobile learning is increasingly important to support flexible and adaptive learning. This study aims to develop a mobile learning-based Sanak Belajar learning media on atomic structure material, and test its validity, practicality, and effectiveness. The method used is Research and Development (R&D) with a modified ADDIE model at the Analysis, Design, Development, and Implementation stages. The research subjects were purposively selected X-grade students of SMA Negeri 1 Loa Janan. The validation results by experts showed a very high level of validity (score >90%). Practicality based on teacher and student questionnaires is also very high, amounting to 97.92% and 79.81% respectively. The effectiveness of the media is seen from the N-Gain value of 0.64 (medium category) and effect size of 3.39 (very high impact). Thus, Sanak Belajar is declared valid, practical, and effective for use in learning chemistry on atomic structure material, and has the potential to be further developed with more interactive technology
Co-Authors Abdul Aziz Adam M. Ramadhan Adam M. Ramadhan Adhani, Aidhil Aditya Fridayanti Afif Ruchaemi Ahmed Jhordy Almeida, Maria Amanuddin Amanuddin Angga Cipta Narsa Anggraeni, Egi Syahrah Anjarwati, Dewi Arief Fadillah Arifian, Hanggara Arjuna Pramana Arum, Alvionita Puspa Asiyah, Mely Nor Ata, Putri Fritami Atin Nuryadin Atria Kent Aulia, Isma Awaliah, Meisya Adelia Salsabila Awaliyah, Nabilah Nailah Bayu Heris Apriyanto Bela Apriliana Ningsih Cahayani, Mega Cahyo, Risky Nor cahyono, didik Debbi Pasedan Dewi Noorjannah Utami Dewi Rahmawati Dewi Rahmawati DEWI RAHMAWATI Diana Kurnia Apriani Diana Ntowe Didi Fadilla Didik Cahyono Eka Rizky Meilinda Elisa Yunita Emma Susilowati Shabir Enggar Wijayanti Erlin Dwi Nurrohimi Erwin Erwin Fairul Muflihah Fajar Prasetya Fajar Prasetya Farah Erika Farah Erika Farah Erika Farah, Harra Ismi Fauzi, Muhammad Sukron Fika Aryati Firman Shantya Budi, Firman Shantya Firnanda Zuni Fransiska Fitriah Khoirunnisa Ganjar Firmansyah Hadi Kuncoro Hadi Nur Hajrah Hajrah Hajrah Hajrah Hanggara Arifian Hanggara Arifian Harra Ismi Farah Hartandi, Dimas Haryanti, Pipin Dwi Hasan, Hafia Hazlina, Nur Helmi Helmi Herman Herman Hilalliyah, Nur Husna, Ariza Rafidah Husnul Khatimah Indah Silvia Sugiyamin Indriana Tasya Indriana Tasya Islami, Agustina Amalia Isyra, Klara Wahyu Jaka Fadraersada Jeremia Giawa, Agusto Kadir, Nurdianah Abdul Kama Tasawa, Gymnastiyar Kusumawijaya, Rizal Izmi Laode Rijai Laode Rijai Laras Indah Wulandari Larasati, Herlin Alfiana Lestari Lestari Lestari, Wahyu Yunita Lisna Meylina Lita Yulianti Lizma Febrina M Arifuddin M. Ari Prayogo Masruhim, Muh. Amir Maulina, Tiara Mega Cahayani Mega Rizky Novitasari Meiliawati, Ruli Mirhansyah Ardana Mitha Saputri Muhammad Akbar Muhammad Ansar Muhammad Choirul Muhammad Ridwansyah Muhammad, Ridwansyah Mukhamad Nurhadi, Mukhamad Myra Puspha Hardina Naheria, Naheria Ni'mah, Fatchiyatun Nisa Naspiah Nova Yunita Putri Olii Nur Awaliah Nur Shidiq Nurdianah Abdul Kadir Nurdianah Abdul Kadir Nurlaili Nurlaili Nurramadhani, Aisyah Zahra Nursilawati, Nursilawati Nurul Fitriyah Sulaeman, Nurul Fitriyah Nurul Khotimah Olii, Nova Yunita Putri Pakaenoni, Frederich Palapa, Kaleb Gideon Pandiangan, Masda Pintaka Kusumaningtyas Pramana, Arjuna Prastika, Nanda Diah Purwita Sari, Regina Putri Fritami Ata Putri, Rizka Amalia Rachma Nadya Utami Rahayu, Rosika Rahman, Karisa Apriyani Rahman, Zainur Arif Ramadani, Pino Rengganis, Ajeng Ayu RISKA OKTAVIANI Risna Agustina Rizal Izmi Kusumawijaya Rizki Nur Analita Rolan Rusli Romisa, Fahmi Salam, Supriatno Saputri, Mitha Sarifah, Awalus Siburian, Putri Dela Silalahi, Yoisi Fortuna Simangunsong, Ari Putra Wijaya Sin Yuan Lai Sinaga, Hilga Natasya Sri Agung Fitri Kusuma, Sri Agung Sri Lestari Sri Wulandari Sriwidodo Sriwidodo Suandi Sidauruk Sukartiningsih Sukartiningsih Sukemi Sukemi Sukemi Sukemi sukmawati Supriatno Salam Supriatno Salam Susanti, Revi Syahputri, Salsabila Dia Syamsiar, Syamsiar Tasya, Indriana Teguh Wirawan Tiara Maharani, Tiara Tri Woro Widyanti Tristania, Auriel Wafiq Turista, Dora Dayu Rahma Usman Usman Usman Usman VICTORIA YULITA FITRIANI Vina Maulidya Wahyu Yunita Lestari Watulingas, Maasje Catherine Watulingas, Maasje Chaterine Wijaya, Viriyanata Wirhanuddin, Wirhanuddin Yulian, Satifa Ananda Yulianti, Ayu Dwi Yuniar Ponco Prananto Yurika Sastyarina Yuspian Nur Zamruddin, Nur Masyithah Zenia Lutfi Kurniawati, Zenia Lutfi Zhiying Zhu