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All Journal Biology, Medicine, & Natural Product Chemistry JURNAL BIOSAINSTEK
Satria Gemilang
Universitas Islam Malang
Biochemistry, Genetics & Molecular Biology Medicine & Pharmacology Public Health

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Antioxidant Activity Test of Bride's Tears (Antigonon leptopus) Leaves Using the DPPH Method Nailil Wafiq Azizah; Majidah Ramadan; Faisal Faisal; Devana Rahma Aldina; Ramadina Novia Putri; Nur Laila Anggraini; Sabilatul Mufarrohah; Satria Gemilang; Firadika Fitriansyah; Hosiyah Hosiyah; Nuvia Harini Wulan Suci; Nihlatus Sofiya; Terra Januarista; Ramizard Rafsanjani
Biology, Medicine, & Natural Product Chemistry Vol 14, No 2 (2025)
Publisher : Sunan Kalijaga State Islamic University & Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/biomedich.2025.142.777-781

Abstract

Bridal tear leaves can be used to treat various health and beauty problems because they contain various active compounds, such as flavonoids, saponins, and tannins. These compounds have antioxidant, anti-inflammatory, and antibacterial properties. This flower contains antioxidants that can help protect the skin from damage caused by free radicals. This research aims to see the effectiveness of antioxidants from bridal tear leaves. The research method involves leaf extraction using 96% ethanol and testing antioxidant activity using the DPPH method. The research results showed that the extract sample from bride's tear leaves was (IC50 – 69.7146 ug/mL). This shows that the bride's tear leaf extract is quite strong in inhibiting free radical reactions.
Species Composition and Community Structure of Small Pelagic Fish Landed at Pondokdadap Coastal Fishing Port, East Jawa - Indonesia Satria Gemilang; Husain Latuconsina; Hamdani Dwi Prasetyo; Anthon Andrimida
BIOSAINSTEK Vol 8 No 1 (2026): Jurnal BIOSAINSTEK
Publisher : UNIVERSITAS MUHAMMADIYAH MALUKU UTARA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52046/biosainstek.v8i1.2704

Abstract

Management of small pelagic fish resources for sustainable use requires scientific information related to exploited fish resources, related to species composition, and community structure, including conservation status. This study aims to analyze the species composition, frequency of occurrence, community structure, and conservation status of small pelagic fish caught by fishermen. This study was conducted in April - May 2025 at the Fish Auction Place and Fishermen's Fish Market at Pondokdadap Beach Fishing Port, Sendangbiru, Malang Regency, East Java. The method used was direct observation with species identification and analysis of species composition, frequency of occurrence, and community structure. The results showed that the small pelagic fish group consisted of six species with a total of 5,332 individuals, dominated by Rastrelliger brachysoma and Decapterus macarellus, with the highest composition and frequency of occurrence. The community structure of small pelagic fish includes Diversity and Dominance indices which are in the low category with values of 1.20 and 0.38, respectively, and the Evenness index which is in the unstable category with a value of 0.67. The species composition and community structure of small pelagic fish fluctuate significantly daily and seasonally, linked to the dynamics of environmental parameters that influence fish biological activity, as well as the complexity of the food chain and fishing pressure. The varying catch sizes of individual small pelagic fish species indicate low gear selectivity. Therefore, regulations governing biologically appropriate fishing practices, supported by further research on reproductive biology and population dynamics, are essential to support sustainable utilization.
Co-Authors Anthon Andrimida Devana Rahma Aldina Faisal Faisal Firadika Fitriansyah Hamdani Dwi Prasetyo Hosiyah Hosiyah Husain Latuconsina Majidah Ramadan Nailil Wafiq Azizah Nihlatus Sofiya Nur Laila Anggraini Nuvia Harini Wulan Suci Ramadina Novia Putri Ramizard Rafsanjani Sabilatul Mufarrohah Terra Januarista