Summary
This laboratory study examined the phytochemical profile and mosquito-larvicidal potential of Sida acuta leaf oil extract as an eco-friendly alternative to synthetic insecticides. Qualitative screening identified high levels of alkaloids, steroids and phenols, alongside lower concentrations of flavonoids, tannins and glycosides. Despite the presence of multiple bioactive compounds, larvicidal testing against Aedes aegypti first-instar larvae yielded low mortality rates (1–3% over 72 hours) with no significant dose–response relationship, suggesting limited practical efficacy under the tested conditions.
UK applicability
This work contributes to the global exploration of plant-based mosquito control agents, though it does not directly address UK agricultural or public health contexts. Aedes aegypti control is not a priority in the UK climate; findings may be relevant to researchers in tropical and subtropical regions seeking alternatives to synthetic insecticides.
Key measures
Qualitative and quantitative phytochemical analysis (alkaloids, steroids, phenols, flavonoids, tannins, glycosides, terpenoids, anthraquinones, saponins, cyanides, oxalates, phytates); larval mortality rate (%) at 24, 48, and 72 hours; knock-down occurrence within first hour; concentration-dependent response (12.5–125 ppb)
Outcomes reported
The study characterised the phytochemical composition of Sida acuta leaf oil extract and evaluated its larvicidal efficacy against Aedes aegypti larvae across varying concentrations (12.5–125 ppb) and collection times (morning versus evening). Mortality rates and knock-down effects were monitored over 72 hours post-exposure.
Topic tags
Dig deeper with Pulse AI.
Pulse AI has read the whole catalogue. Ask about this record, its theme, or how the findings apply to UK farming and policy — every answer cites the underlying studies.