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All Journal Jurnal Ilmu Pertanian jurnal Ilmu Pertanian (Agricultural Science) Hydrogen: Jurnal Kependidikan Kimia
Laila, Farida
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Agriculture, Biological Sciences & Forestry Chemistry Education

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Utilization of red cabbage (Brassica oleracea var. Capitata L.) anthocyanins as a sensor for nitrite detection in domestic wastewater Rogo, Ben Haryan Adi; Natasya, Vika Aulia; Attamimi, Najwa Sabila; Muliawan, Sidiq; Laila, Farida
Jurnal Ilmu Pertanian Vol 10, No 1 (2025): April
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.98146

Abstract

Monitoring wastewater quality is increasingly essential for enhancing wastewater treatment procedures. Domestic wastewater, produced by residential and commercial operations, contains considerable organic, inorganic, and biological pollutants, including nitrite ions, which provide serious health hazards. This research develops a nitrite detection sensor utilizing anthocyanins derived from red cabbage (Brassica oleracea var. Capitata L.). The extraction utilized ultrasonic-assisted extraction (UAE) using a solvent combination of 96% ethanol, distilled water, and 80% acetic acid, resulting in the maximum anthocyanin content of 7.653 mg/g dry weight. The sensor's performance was assessed in terms of stability, selectivity, and sensitivity. The results demonstrated temperature stability at 30°C, with a retention rate of 98.92%, and selectivity for nitrite was verified in the presence of several possible interfering chemicals. Sensitivity tests indicated a detection threshold of 250 ppm for nitrite. The sensor exhibited a shelf life of 19 hours at ambient temperature (25°C) and 11 days at 5°C.
Utilization of red cabbage (Brassica oleracea var. Capitata L.) anthocyanins as a sensor for nitrite detection in domestic wastewater Rogo, Ben Haryan Adi; Natasya, Vika Aulia; Attamimi, Najwa Sabila; Muliawan, Sidiq; Laila, Farida
Jurnal Ilmu Pertanian Vol 10, No 1 (2025): April
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.98146

Abstract

Monitoring wastewater quality is increasingly essential for enhancing wastewater treatment procedures. Domestic wastewater, produced by residential and commercial operations, contains considerable organic, inorganic, and biological pollutants, including nitrite ions, which provide serious health hazards. This research develops a nitrite detection sensor utilizing anthocyanins derived from red cabbage (Brassica oleracea var. Capitata L.). The extraction utilized ultrasonic-assisted extraction (UAE) using a solvent combination of 96% ethanol, distilled water, and 80% acetic acid, resulting in the maximum anthocyanin content of 7.653 mg/g dry weight. The sensor's performance was assessed in terms of stability, selectivity, and sensitivity. The results demonstrated temperature stability at 30°C, with a retention rate of 98.92%, and selectivity for nitrite was verified in the presence of several possible interfering chemicals. Sensitivity tests indicated a detection threshold of 250 ppm for nitrite. The sensor exhibited a shelf life of 19 hours at ambient temperature (25°C) and 11 days at 5°C.
Eco-Friendly Ultrasound-Assisted Synthesis of Silver Nanoparticles Mediated by Tea Leaf Extracts and Their Potential Applications Muliawati, Nindya Tri; Fajar, Malik; Sholeha, Novia Amalia; Ramdhan, Mohamad Alief; Laila, Farida; Sujarnoko, Tekad Urip Pambudi; Yulianti, Wina; Supardan, Atep Dian; Listiasari, Faranita Ratih; Resmeiliana, Ika
Hydrogen: Jurnal Kependidikan Kimia Vol. 13 No. 5 (2025): October 2025
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v13i5.18213

Abstract

The green synthesis of silver nanoparticles (AgNP) presents notable benefits, such as environmental sustainability, simplicity, cost-effectiveness, and scalability for industrial applications. This study utilized green tea leaves (Camellia sinensis), which are abundant in catechins and polyphenols, as natural reducing and stabilizing agents. Ultrasonic-assisted synthesis was utilized to improve extraction and reduction processes, as acoustic cavitation induced by ultrasonic waves facilitates efficient mass transfer, accelerates nucleation, and enhances nanoparticle dispersion. This method provides an environmentally sustainable and economically viable alternative to conventional AgNP synthesis, enhancing the sustainability of nanoparticle production. The successful synthesis of AgNP was evidenced by the distinct color change of the tea extract from green to brown, accompanied by the formation of a brown colloidal suspension, in accordance with the Surface Plasmon Resonance (SPR) phenomenon. The UV-Vis spectrophotometric analysis confirmed AgNP formation, evidenced by a characteristic absorption peak at approximately 430 nm. The synthesized AgNPs were utilized as a colorimetric sensor for Fe³⁺ ions in aqueous solutions, demonstrating distinct color changes and SPR band shifts upon interaction with the metal. This illustrates their capability as environmentally friendly nanomaterials for the swift and precise detection of heavy metals, aiding in sustainable environmental monitoring. This research integrates ultrasonic-assisted synthesis with green tea extract, presenting a viable approach for the large-scale, environmentally sustainable production of nanoparticles.
Co-Authors Atep Dian Supardan Attamimi, Najwa Sabila Fajar, Malik Listiasari, Faranita Ratih Muliawan, Sidiq Muliawati, Nindya Tri Natasya, Vika Aulia Ramdhan, Mohamad Alief Resmeiliana, Ika Rogo, Ben Haryan Adi Sholeha, Novia Amalia Tekad Urip Pambudi Sujarnoko Wina Yulianti