Accumulation of Heavy Metals and Arsenic by Medicinal Plant Raw Material of Bitter Hollow

The Voronezh region is traditionally the most important area of crop production and farming. The purpose of the study was to study the contamination by heavy metals of medicinal vegetable raw materials of the Voronezh region using the example of grass of the bitter emery collected in urban and agro-ecological systems, which experience various anthropogenic effects. The accumulations of heavy metals (lead, mercury, cadmium, nickel, copper, zinc, cobalt, chromium) and arsenic were studied, in 51 samples of pooch grass bitter.

Bioaccumulation of Cadmium (II) by Bacillus sp. 14 Rhizobacteria

To study the resistance of isolated rhizobacterium Bacillus sp. 14 to cadmium (II), bioaccumulation of the metal by this microorganism was investigated. It was shown that accumulation of cadmium (II) occurs during the exponential phase of the microorganism’s growth. The predominant role of the extracellular surface of the growing cells Bacillus sp. 14 in the cadmium (II) resistance was clarified.