Features of the Formation of Sensitive Films Based on Mycelium of Higher Fungi for Surface and Plate Acoustic Waves Gas Sensors.

A comparative analysis of the responses of two types of acoustic waves (surface SAW and plate APW) with close frequencies and the same type of waves (SAW) with different frequencies toward various liquid vapors (water, acetone, ethanol) was carried out in this paper. Two types of films based on mycelium of higher fungus (Curtis) P. Karst () prepared by various methods were used as sensitive coatings.

Enzymatic and Antimicrobial Activities in Polar Strains of Microscopic Soil Fungi.

Potential to produce inducible enzymes (several hydrolases and oxidases) and antibiotics as secondary metabolites was studied in soil micromycete strains from the Arctic (Franz Josef Land and Novaya Zemlya) and Antarctica (the oases Thala Hills, Larsemann Hills, Schirmacher, and Marie Byrd Land). Maximal esterase activity was observed in strains of two typical Antarctic species, Hyphozyma variabilis 218 and Thelebolus ellipsoideus 210 (51 and 29 nmol FDA/((g mycelium h), respectively). Cellulolytic activity was maximal (89 µmol glucose/mg biomass) in Ascochyta pisi 192.

Liquid-crystalline ordering in bacterial cellulose produced by Gluconacetobaсter hansenii on glucose-containing media.

This research is dedicated to the studies of the microscale morphology of bacterial cellulose (BC) obtained by means of static cultivation of Gluconacetobacter hansenii GH-1/2008. We found that the microscale morphology depended on the BC production rate that was varied by using different glucose concentrations in the cultivation medium. It was revealed that at higher production rates, BC fibrils were aligned in a liquid-crystalline-like (LC-like) order.

Isolation and partial structural characterization of new Kunitz-type trypsin inhibitors from the pike cestode Triaenophorus nodulosus.

The inhibitors produced by the parasitic worms successfully protect them from the host's proteases and are supposed to underlie the host-parasite specificity. Our previous study has shown that the extracts from the pike tapeworm Triaenophorus nodulosus inhibit host proteinases and commercial trypsin. We aimed to isolate and identify the components responsible for trypsin inactivation.

Draft Genome Sequence of Streptomyces xinghaiensis () OlgR, a Strain Resistant to Oligomycin A.

We report a draft genome sequence of Streptomyces xinghaiensis () OlgR, which is resistant to oligomycin A. This mutant strain is derived from S. xinghaiensis OlgR2.

[A new regulatory function of the A-factor--stimulation of the streptomyces spore germination].

Spore germination in streptomycetes was shown to be stimulated by exogenously added A-factor. Agar medium either containing or not containing A-factor was inoculated with spore suspensions of three strains differing in their ability to produce regulators of the A-factor group: Streptomyces griseus 773, which produces A-factor and two its lower homologs, S. coelicolor A3(2), which forms six AcL-factors (A-factor analogues), and S.

[Search for A factor-dependent variants in actinomycete population].

A study of 28 nocardia-like, asporogenous, and oligosporous spontaneous morphological variants belonging to 23 species of streptomycetes revealed five strains producing regulators of the A-factor group. Streptomyces griseus 1439, which forms aerial mycelium and spores only in the presence of exogenous A-factor was used as the test strain. Among the 28 spontaneous variants, three new A-factor-dependent strains were revealed, which represented the species Streptomyces griseus, S.