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All Journal CHEMPUBLISH JOURNAL Science and Technology Indonesia Jurnal Pengabdian UntukMu NegeRI Jurnal Penelitian Sains IJEMS (Indonesian Journal of Environmental Management and Sustainability) Indonesian Physical Review Jurnal Pengabdian Masyarakat Teknik Indonesian Journal of Material Research Journal of The Physical Society of Indonesia
Arsyad, Fitri Suryani
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Automation of Orchid Soil pH Using IoT-Based Soil pH Sensor (SKJ-001) Komaria, Putri Nur Hidayah; Yoanda, Alya Putri; Rahma, Diana Mauli; Ayu, Jutira; Margareta, Regi Tia; Assa’idah, Assa’idah; Arsyad, Fitri Suryani
Journal of the Physical Society of Indonesia Vol. 1 No. 2 (2025): October 2025
Publisher : The Physical Society of Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35895/jpsi.1.2.98-115.2025

Abstract

The growth and development process of cymbidium orchids requires a soil pH of around 5.5–6.5. Otherwise, it will cause low nutrient absorption, resulting in yellow leaves and slow growth, while too high a pH can cause the plant's roots to die. Therefore, this study developed an IoT-based ESP32 soil pH automation design to maintain soil pH stability and reduce orchid growth and development failures due to unstable soil pH. The IoT-based ESP32 soil pH automation design allows remote monitoring of soil pH conditions via a smartphone that has downloaded the Blynk application. The soil pH automation design consists of an SKJ-001 soil pH sensor to measure soil pH, an HC-SR04 ultrasonic sensor to measure solution height, and a 5 VDC pump to circulate NaOH and HCl solutions to stabilize pH. This soil pH automation system has been tested on ten soil samples with an average accuracy of 98.606%, an average precision of 99.192%, and an average error of 0.581%. Based on these results, it can be concluded that the IoT-based ESP32 soil pH automation system is effective and reliable in maintaining soil pH stability, thereby supporting optimal growth and development of cymbidium orchids.
Bioactive Metabolites in Melaleuca leucadendra Leaves Extract: Phytochemical Profilling and GC-MS Characterization for Antimicrobial Relevance Atina; Royani, Idha; Assaidah; Setiabudidaya, Dedi; Miksusanti, Miksusanti; Arsyad, Fitri Suryani
Chempublish Journal Vol. 10 No. 1 (2026): Chempublish Journal (January - June)
Publisher : Department of Chemistry, Faculty of Science and Technology Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/chp.v10i1.49078

Abstract

The global escalation of antimicrobial resistance (AMR) necessitates the exploration of natural sources of antibacterial agents. This study examined the ethanolic leaf extract of Melaleuca leucadendra's phytochemical composition, chemical profile, and antibacterial activity. Alkaloids, flavonoids, saponins, tannins, phenolics, terpenoids, and steroids were all detected by phytochemical screening. The quantitative total flavonoid content (TFC) of the extract was 17.78 mg QE/g, while the total phenolic content (TPC) was 292.43 mg GAE/g extract. Gas Chromatography–Mass Spectrometry (GC–MS) analysis identified oxygenated esters (18.86%), oxygenated aromatics (15.22%), phenolic derivatives (13.44%), and flavonoids (12.86%), methoxylated aromatics and terpenoids (5.34%), phytol, and fatty acid derivatives. These metabolite classes are widely reported to exert antibacterial effects through multiple mechanisms such as membrane disruption, enzyme inactivation, and inhibition of nucleic acid synthesis. Antibacterial testing against Staphylococcus aureus and Escherichia coli using the agar diffusion method showed a concentration-dependent response, with the highest activity at 80% extract (15.67 ± 0.58 mm and 15.33 ± 0.58 mm inhibition zones, respectively). Raman spectroscopy confirmed the interaction between polymer molecules and secondary metabolite compounds in the extract, thereby potentially enhancing antibacterial properties. These findings highlight that the antibacterial activity of M. leucadendra is mediated by the synergistic interplay of phenolics, flavonoids, methoxylated aromatics, terpenoids, and fatty acids. The findings offer compelling proof that M. leucadendra is a viable natural source for the creation of antibacterial compounds that will lessen antibiotic resistance.
Pemasangan Modem Detektor Gempa Ekonomis di Krui, Kabupaten Pesisir Barat, Provinsi Lampung berbasis Sensor Getaran Saleh, Khairul; Ariani, Menik; Arsyad, Fitri Suryani; Koriyanti, Erry; Monado, Fiber; Royani, Idha; Assaidah, Assaidah
Jurnal Pengabdian UntukMu NegeRI Vol. 10 No. 1 (2026): Pengabdian Untuk Mu negeRI
Publisher : LPPM UMRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jpumri.v10i1.11202

Abstract

Telah diimplementasikan modem detektor gempa di kota Krui, Kabupaten Pesisir Barat, Provinsi Lampung pada Bulan Agustus 2025. Wilayah yang berada di area ring of fire ini memerlukan banyak sensor untuk mendeteksi gempa agar mitigasi bencana dapat dilaksanakan dengan baik. Oleh karena itu, riset yang dilaksanakan oleh Jurusan Fisika dengan output berupa modem detektor gempa berbasis sensor getaran dipasang di dua lokasi berbeda di Krui. Penentuan lokasi tersebut ditetapkan oleh tim bekerja sama dengan Badan Penanggulangan Bencana Daerah (BPBD) Krui setelah melakukan serangkaian survey di beberapa tempat. Setelah lokasi pemasangan diputuskan, BPBD mengerahkan komunitas nelayan di sekitar Pantai Walur dan warga di Kampung Sunda untuk membantu tim dalam proses instalasi modem dan sel surya yang menjadi sumber tenaga listrik mandiri bagi detektor. Data yang diukur oleh sensor pada modem dapat dipantau melalui website yang telah dibangun oleh tim riset Jurusan Fisika, FMIPA, Universitas Sriwijaya.
Co-Authors Aldes Lebani, Aldes Aldes Lesbani Alfahidayah, Arini Amiruddin Supu Andrivo Rusydi Aprilianda Assa'idah Assa'idah, Assa'idah Assaidah Assaidah Assaidah, Assaidah Assaidah, Assaidah Assa’idah, Assa’idah Atina Aulia Ayu, Jutira Dedi Setiabudidaya Edianta, Jaya Erry Koriyanti Fiber Monado Frinsyah Virgo Hanifah, Yulizah Hijrah, Muhammad Husin, Sadam Idha Royani Ihsan Alfikro Irma Suryani Ismail, Dede Ridwan Jorena Jorena, Jorena Khairul Saleh Komaria, Putri Nur Hidayah Lailaturofi'ah, Siti Liasari, Beta Riana Margareta, Regi Tia Melwita, Elda Miksusanti Miksusanti Ningtyas, Aniendita Nur Ahmad, Nur Octavianus Cakra Satya Putri, Bunga Indah Rahma, Diana Mauli Ramlan, H. Risfidian Mohadi Satria Jaya Priatna, Satria Jaya Siti Nur’Aini Siti Sailah, Siti Soerya, Balada Weanda, W Yoanda, Alya Putri Yuliana, Ayu Zulkarnain