A Differential 3.3V BICMOS Buffer with Current Consumption and Linearity Control for RF Mixer

International audienc

INFLUENCE OF PLEUROTUS OSTREATUS β-GLUCANS ON THE GROWTH AND ACTIVITY OF CERTAIN LACTIC ACID BACTERIA

Over the last few decades, polysaccharides of fungi, namely beta-glucans captivated researchers' attention for they hold many significant properties; the most important ones are immunomodulating and antitumor properties. Although, beta-glucans are widely represented in nature, the most biologically active form of beta-glucans is beta-1,3 / 1,6-glucan. Most often, this type of beta-glucans is found in some yeast, bacteria, and mycelial fungi. Thus, in recent years, fungi have been the focus of scientists around the world as a source of biologically active compounds with beneficial effects on human health. Some fungi and derived from them biologically active substances were included in the product group, defined as "functional foods", i.e. as food, whose health benefits were documented by scientific research and whose beneficial effects can not be attributed only to the availability of nutrients. The use of functional foods containing beta-glucans leaves no doubt. With the aim of imparting new properties to functional fermented products by introducing into their composition beta-glucans of fungal origin, the effect of water-soluble beta-glucans obtained from the deep mycelium of oyster mushroom (Pleurotus ostreatus) on the activity of lactobacillus bacteria (Lactobacillus acidophilus, Streptococcus salivarius subsp., thermophilus, Lactobacillus bulgaricus)

Electrodialysis in Hydrometallurgical Processes

Electrodialysis (ED) is an ionic exchange membrane process for separation of different components and species. In desalination, a large part of the energy is used to sustain a concentration difference between the solutions, but in the processes of exchanging in selective manners, the energy need is lower and more directed towards ohmic losses in the membranes. The latter has relevance to several hydrometallurgical industries, as they very often accumulate undesired species in their process streams and currently apply intensive (energy and chemical) routes to remove these species. Here, we describe the principle of ED and discuss opportunities for component and salt separation using ion-exchange membranes by providing a brief review of ED in the hydrometallurgical sector