Optimized green synthesis of silver nanoparticles from guarana seed skin extract with antibacterial potential

Green Processing and Synthesis, Год журнала: 2025, Номер 14(1)

Опубликована: Янв. 1, 2025

Abstract This study optimizes the green synthesis of silver nanoparticles (AgNPs) using seed skin extract guarana ( Paullinia cupana ) as a natural stabilizing and reducing agent. Employing Taguchi design, nine experiments were conducted across three levels for four key factors: reaction temperature, pH, nitrate concentration, concentration to minimize AgNP size. Optimal conditions – pH 11, 5 mM nitrate, 50°C 1% (m/v) produced quasi-spherical AgNPs with an average size ∼26 nm. Chemical analysis revealed caffeine main organic compound potassium oxide primary inorganic component. UV-vis spectra showed absorption peak at 438 nm, X-ray diffraction confirmed typical peaks. Further identified polyphenols, alkaloids, flavonoids agents. A high (180.0 ± 0.2 ppm) was through ICP-OES, demonstrated significant antibacterial activity against Escherichia coli Staphylococcus aureus , minimum inhibitory 50 μg·mL −1 . underscores sustainability promising alternative traditional nanoparticle production methods.

Язык: Английский

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Agroforestry lexicon in Manggarai language: an effort to revitalize culture and empower indigenous peoples

Cogent Arts and Humanities, Год журнала: 2025, Номер 12(1)

Опубликована: Янв. 8, 2025

The decline in forest benefits recognition caused local wisdom on agroforestry technology to fade, threatening the Manggarai people's identity as a community living harmoniously with forests. loss of lexicon jeopardizes not only linguistic diversity but also traditional ecological knowledge embedded within it. Without revitalization, sustainable practices balancing agriculture and conservation may vanish, further endangering environment. This research identifies people, using their communication data source. Employing ethnographic methods, were collected through observation, interviews, elicitation Ruteng Pu'u community. Participatory observation farming life, in‑depth targeted yielded 253 agroforestry‑related lexicons absent from Indonesian language. These fall into three categories: (1) nouns for plants, (2) tools, (3) verbs stages. findings reveal that are an integral, albeit archaic, part study contributes environmental by documenting essential management practices.

Язык: Английский

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A review of six medicinal and aromatic plants and their health benefits

Revista Fitos, Год журнала: 2025, Номер 19(1)

Опубликована: Фев. 1, 2025

Язык: Английский

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Plants of the USA: recordings on native North American useful species by Alexander von Humboldt

Journal of Ethnobiology and Ethnomedicine, Год журнала: 2024, Номер 20(1)

Опубликована: Сен. 17, 2024

Язык: Английский

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