BIOACTIVITY ANALYSIS OF Annona glabra L. SEED EXTRACTS FOR WOOD PROTECTION AGAINST TERMITES (Cryptotermes cynocephalus Light. AND Coptotermes curvignathus Holmgren.)

Abstract

Pond apple (Annona glabra L.) belongs to the family of Annonaceae. The seed of A. glabra contains bioactive substance that is toxic to some organisms, however the effectiveness to control wood degrading termites has not yet been scientifically reported. This research analyzes the efficacy of A. glabra seed extract to wood degrading termites. Seed extraction was conducted using n-hexane and ethyl acetate. The paper disc test showed that the extract of A. glabra is toxic to Cryptotermes cynocephalus (dry-wood termites) and Coptotermes curvignathus (subterranean termites). The higher extract concentration (up to 63%) resulted in a higher termite mortality (up to 100%) and lower weight loss of paper sample (less than 1%). Ethyl acetate extract of A. glabra seeds has a better toxicity effect than n-hexane extract against dry wood termites and subterranean termites.

Laboratory Studies on Chromatographic Profile, Toxicity and Repellent Activity of Custard Apple (Annona squamosa L.) Seed Extract

“…The probit analysis (Table 2) showed the LC50 value of 2.38 with a fiducial limit of about 2.03-2.80 and 3.06 % with a fiducial limit of about 2.58-3.64 for O. anamallensis and M. fletcheri respectively. Trisna Priadi et al [14] reported that the A. glabra extract showed insecticidal activity against wood-destroying termites Cryptotermes cynocephalus (dry-wood termites) and Coptotermes curvignathus. Sini et al [15] reported that the A. squamosa L. extract, which contains octadecenoic acid (oleic acid), showed insecticidal activity against the insects.…”

Bioactivity of aqueous extracts of annonaceous from the amazon savannah of Roraima on the cowpea aphid

“…In the genus Annona, the species Annona glabra, A. hypoglauca, A. montana and A. squamosa are included for their known insecticidal and acaricidal potential on Tetranychus urticae (Acari: Tetranychidae) (Maciel et al, 2019); Cryptotermes cynocephalus and Coptotermes curvignathus (Priadi et al, 2021); and, on the aphids, A. craccivora (Rabelo & Bleicher, 2014) and A. gossypii (Santos et al, 2018). Contribuciones a Las Ciencias Sociales, São José dos Pinhais, v.16, n.12, p. 32146-32160, 2023 Knowing this, this study proposed to evaluate the toxicity and repellency of aqueous extracts of A. glabra, A. hypoglauca, A. montana and A. squamosa leaves, obtained from the Amazonian savanna of Roraima, Brazil, on A. craccivora (Hemiptera: Aphididae), under laboratory conditions.…”