Chemical composition of some spp. and their insecticidal evaluation on nucleopolyhedrovirus replication and

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Abstract

Purpose
The application of natural products as well as biological control-specific bioagents, especially the nucleopolyhedrovirus, is considered a very important tool to ensure that pest control does not affect the environment.
Methods
Chemical constituents screening and determination of pharmacopoeial constants, and minerals and trace elements of the brown algae , , from the Red Sea (Hurghada, Egypt) were carried out.
Results and conclusion
It was found that spp. have a high ash content and were positive for subliminal matter, volatile constituents, carbohydrate content, sterols, and/or triterpenes. In addition, they had high Ca, K, Mg, and Fe contents. The protein content as well as the amino acid composition of the three algae species mentioned were assessed using the Kjeldahl method and an amino acid analyzer, respectively. The hydroalcoholic extracts (70%) of spp. under investigation were examined for insecticidal activities on (Sl52 cells) and (Sf9 cells) and on nucleopolyhedrovirus replication. The results showed that the three algae species tested had various insecticidal and antiviral activities.

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