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Antioxidant Activity Test of Bride's Tears (Antigonon leptopus) Leaves Using the DPPH Method Azizah, Nailil Wafiq; Ramadan, Majidah; Faisal, Faisal; Aldina, Devana Rahma; Putri, Ramadina Novia; Anggraini, Nur Laila; Mufarrohah, Sabilatul; Gemilang, Satria; Fitriansyah, Firadika; Hosiyah, Hosiyah; Suci, Nuvia Harini Wulan; Sofiya, Nihlatus; Januarista, Terra; Rafsanjani, Ramizard
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.
The The Effect of Distance of Sugar Industry Pollutants on Vegetation and Water Quality of Sukun River Azizah, Nailil Wafiq; Prasetyo, Hamdani Dwi; Tito, Sama' Iradat
Indonesian Green Technology Journal Vol. 14 No. 2 (2025)
Publisher : Sekolah Pascasarjana, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.igtj.2025.014.02.02

Abstract

Industrial activities potentialy cause river water pollution which can have a negative impact on riparian ecosystems. This study aims to analyze the effect of distance of sugar industry pollutant sources on water quality and riparian vegetation diversity in Sukun River, Malang Regency. Sampling was conducted at three stations located 2 km from each other. Vegetation analysis was conducted using the Index of Important Value (INP), Shannon-Wiener Diversity Index, and Index of Riparian Quality (QBR). The results showed that the farther away from the pollutant source, the better the water quality and riparian vegetation. The highest DO was found at the farthest station (6.8 mg/L), while the lowest was at the nearest station (1.17 mg/L). The Shannon-Wiener diversity index and QBR also increased with distance from the pollutant source. Correlation analysis showed a negative relationship between pH and riparian vegetation quality, and a positive relationship between DO and TDS and vegetation diversity. Overall, this study confirms that industrial pollution has a significant impact on river ecosystems. Therefore, effective environmental management strategies, such as rehabilitation of riparian areas is needed to maintain the river ecosystem and support the biodiversity preservation and ecological balance along the Sukun River.