Experimental research on obtaining extract with bioinsecticidal/bio-fertilizer action from Ocimum basilicum with application for organic agriculture
2021
Voicea, I., National Inst. of Research-Development for Machines and Installations Designed to Agriculture and Food Industry, Bucharest (Romania) | Gageanu, I., National Inst. of Research-Development for Machines and Installations Designed to Agriculture and Food Industry, Bucharest (Romania) | Fatu, V., Research-Development Inst. for Plant Protection, Bucharest (Romania)
Within the paper an experimental laboratory analysis is presented on the influence of a water-soluble extract with insect-repellent, fungistatic and growth stimulating properties on the growth of cucumber embryos during germination, on root growth in radishes, on root growth in tomatoes during the process of germination and on root growth in salad during germination. The extract with bio-insecticidal/biofertilizer activity was obtained by using an experimental model of innovative extractor that uses an extraction technique based on the pressure gradient (percolation) obtained by means of a hydro-pneumatic cylinder fed with compressed air from a 2.2 kW compressor, as well as the extraction technique under the action of ultrasound obtained using an ultrasonic generator with a maximum amplitude of up to 200 µm. The raw material introduced in the extraction vessel of the experimental model of extractor was represented by the green plant of Ocimum basilicum (common basil). The leaves of Ocimum plants produce an essential oil, which composition has been determined through gas chromatography (containing eugenol, eugenal, carvacrol, estragole, limatrol, caryophyllene), the presence of these compounds determining antimicrobial and insecticidal properties, as well as fertilizing action.
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