Suchergebnisse

Physicochemical and sorption characteristics of the Black Soldier fly pupal cuticle have been studied. The qualitative and granulometric compositions of chitin material were determined, and the surface microrelief of chitin particles was studied by scanning microscopy. The sorption properties of the material were studied using the methylene blue dye. It was found that the sorption capacity of the material is 0.118 mmol/g, or about 38 mg/g. Mathematical processing of the sorption isotherm using the Langmuir, Freindlich, Dubinin-Radushkevich models showed that the process is best described by the Dubinin-Radushkevich model (R2 = 0.8031), and the sorption process has a physical nature (E = 5.534 kJ/mol).

Using the method of scanning electron microscopy, a comparative study of the particle surface morphology and the elemental composition of the cuticle of Hermetia illucens pupa before and after the application of the culture liquid (CL) of the probiotic strain Lactobacillus acidophilus B 2707 was carried out. At the same time, under the influence of CL, destruction of relatively large particles of the powder of the chitin-protein complex of the cuticle (average particle diameter D 845.3 ± 109.1 μm) and the formation of small fragments (average D 63.4 ± 13.9 μm), including nanoparticles (average D 54 ± 18 nm). A biofilm of lactobacilli enriched with calcium, magnesium and phosphorus was obtained on a sorbent consisting of microparticles of the cuticle of insect pupae and including nanoparticles, which provided the probiotic preparation with high biological efficiency.