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2006, vol. 12, br. 1, str. 31-39
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Alginatne mikrokapsule kao nosači u procesu produkcije biođubriva
Alginate based macrocapsules as inoculant carriers for the production of nitrogen fixing bio fertilizers
Nacionalna visoka škola za prehrambenu tehnologiju, ENITIAA, Departman za inženjerstvo prehrambene tehnologije, Nant, Francuska
e-adresa: evelina@enitiaa-nantes.fr
Sažetak
U ovom radu su dati preliminarni podaci za razvoj suvih kapsula za inkapsulaciju biođubriva koji bi trebalo da zameni klasične pesticide ili herbicide. Kapsula veličine 3-4 mm u prečniku sadrži imobilisanu bakteriju Azospirillum za fiksaciju azota. Metoda je modifikovana jer se pored alginata (3%) nalazi skrob-standardni (44.6%) kao i modifikofani škrob (2,4%), a inkapsulirana koncentracija ćelija je bila oko 106 ćelija/kapsuli. Razlog za razvoj imobilisanog biođubriva pored evidentnih ekoloških prednosti i visokog stepena inkapsulacije se pokazao kao bolji od tečnog ili čvrstog-liofoliziranog oblika.
Abstract
This paper presents the first steps of the development of dry capsules of biofertilizer to replace chemical fertilizers that cause environmental problems. This new product consists of macrocapsules (large size beads about 3 to 4 mm diameter) containing nitrogen fixing bacteria: Azospirillum. They are produced by quick encapsulation and drying processes, are made of alginate (3%), standard starch (44.6%) and modified starch (2.4%) and can contain up to 106 CFU/capsule. This large size inoculum carrier was formulated to reduce production costs, favour its storage and application in the field and the results show that this new form of inoculum carrier is far better than the liquid and powdered forms.
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