School of Energy, Environmental and Natural Resources, Department of Marine and Coastal Studies, Madurai Kamaraj University, Madurai-625 021, Tamil Nadu, India.
Asian Pac J Trop Med. 2011 Oct;4(10):799-803. doi: 10.1016/S1995-7645(11)60197-1.
To identify the larvicidal activities of silver nano particles synthesised with Rhizophora mucronata (R. mucronata) leaf extract against the larvae of Aedes aegypti (Ae. aegypti) and Culex quinquefasciatus (Cx. quinquefasciatus).
In vitro larvicidal activities such as LC(50) and LC(90) were assessed for the Ae. aegypti and Cx. quinquefasciatus larval species. Further, characterisation such as UV, XRD, FTIR and AFM analysis were carried out for the synthesised silver nano particles.
The LC(50) value of the synthesised silver nano particle was identified as 0.585 and 0.891 mg/L for Ae. aegypti and Cx. quinquefasciatus larvae respectively. Further, the LC(90) values are also identified as 2.615 and 6.291 mg/L for Ae. aegypti and Cx. quinquefasciatus species respectively. The synthesised silver nanoparticles have maximum absorption at 420 nm with the average size of 60-95 nm. The XRD data showed 2θ intense values with various degrees such as 37.10°, 47.66°, 63.97° and 70.01°. The FTIR data showed prominent peaks in (3 426.89, 2 925.49, 2 869.56, 2 346.95, 1 631.49, 1 031.73, 669.18 and 455.12) different ranges.
The biosynthesis of silver nanoparticles with leaf aqueous extract of R. mucronata provides potential source for the larvicidal activity against mosquito borne diseases.
鉴定由 Rhizophora mucronata（R. mucronata）叶提取物合成的银纳米颗粒对埃及伊蚊（Ae. aegypti）和致倦库蚊（Cx. quinquefasciatus）幼虫的杀幼虫活性。
对埃及伊蚊和致倦库蚊幼虫进行了体外杀幼虫活性评估，如 LC(50)和 LC(90)。此外，还对合成的银纳米颗粒进行了 UV、XRD、FTIR 和 AFM 分析等特性研究。
合成的银纳米颗粒对埃及伊蚊幼虫的 LC(50)值为 0.585mg/L，对致倦库蚊幼虫的 LC(50)值为 0.891mg/L。此外，LC(90)值分别为 2.615mg/L 和 6.291mg/L。合成的银纳米颗粒在 420nm 处具有最大吸收，平均粒径为 60-95nm。XRD 数据显示，不同程度上存在 2θ 强烈值，如 37.10°、47.66°、63.97°和 70.01°。FTIR 数据显示在不同范围内具有明显的峰，如（3426.89、2925.49、2869.56、2346.95、1631.49、1031.73、669.18 和 455.12）。
利用 Rhizophora mucronata 叶的水提物合成银纳米颗粒为防治蚊媒疾病提供了潜在的杀幼虫活性来源。
