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All Journal Biology, Medicine, & Natural Product Chemistry JURNAL BIOSAINSTEK
Nur Laila Anggraini
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.
Community of Sharks from Fishermen's Bycatch Landed at the Fishermen's Fish Market, Pondokdadap Coastal Fishing Port, Malang - East Jawa Nur Laila Anggraini; 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.v8i1.2705

Abstract

Sharks are cartilaginous fish that play an important ecological role in marine ecosystems. However, their existence in the wild is very vulnerable to overfishing and habitat degradation. This study aims to identify species and analyze the structure of shark communities as bycatch of fishermen. This study was conducted from April to June 2025 at the Fishermen's Fish Market, Pondokdadap Beach Fishing Port Area, Sendangbiru, Malang, East Java, through observation of morphological characters and interviews as supporting data. Data analysis is descriptive in the form of Tables and Graphs. The results of fish identification include 17 individuals from 3 species representing 2 families from 2 orders, namely Chiloscyllium griseum, Squalus montalbani, and Squalus hemipinnis. All individuals caught are categorized as having entered the adult phase, so they are biologically suitable for capture. The diversity index (H') value is in the low category, the evenness index (E) is in the stressed category, and the dominance index (C) is in the high category. The low number of shark catches landed is due to the publicity of the shark trade ban by the Pondokdadap Coastal Fishing Port authorities and strict sanctions against violators. Despite this, some shark landings are still carried out illegally, reflecting low awareness among fishermen and fish traders, as well as high demand for sharks in the market. Efforts to conserve sharks from overfishing need to be continuously improved through intensive and widespread outreach to various stakeholders to build a shared understanding regarding shark conservation in the wild.
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 Nuvia Harini Wulan Suci Ramadina Novia Putri Ramizard Rafsanjani Sabilatul Mufarrohah Satria Gemilang Terra Januarista