The influence of some metal nanooxides on the exocellular amylase activity of Aspergillus niger CNMN Fd 06 mycelial fungal strain
2022
CONDRUC, V. | CILOCI, A. | CLAPCO, S. | DVORNINA, E. | LABLIUC, S.
The research was carried out within the State Program Project 2020-2023 of the Republic of Moldova with the number 20.80009.5007.28 "Development of new multifunctional materials and effective technologies for agriculture, medicine, technique and the educational system based on "s" and "d" metal complexes with polydentate ligands", funded by NARD
Show more [+] Less [-]In order to identify new innovative solutions for directing and increasing amylase biosynthesis in fungal strain Aspergillus niger CNMN FD 06, the effect of nanocomposites of Ti, Fe, Zn and Cu metals with different characteristics was evaluated. In the research were included the nanoparticles (NPs) as follow: nanodioxide of Ti (TiO2) with dimensions of 21 nm and <100 nm, titanium silicon oxide nanoparticles TiSiO4<50 nm, nanooxides Fe3O4 50-100 nm, ZnO ≤50 nm and CuO <50 nm, as well as Cu metal (99,5%) with sizes of < 60-80 nm. The amylolytic activity of the strain Aspergillus niger CNMN FD 06 was monitored during the 5-7th days of cultivation – a period that corresponds to the maximum manifestation of amylase activity in the producer under submerged cultivation in classic conditions (control, without NPs). The nanocomposites were included in the culture medium in concentrations of 5 mg/L, 10 mg/L and 15 mg/L.
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