Utilization of Spent Coffee Grounds as a Food By-Product to Produce Edible Films Based on κ-Carrageenan with Biodegradable and Active Properties.

Coffee ranks as the second most consumed beverage globally, and its popularity is associated with the growing accumulation of spent coffee grounds (SCG), a by-product that, if not managed properly, constitutes a serious ecological problem. Analyses of SCG have repeatedly shown that they are a source of substances with antioxidant and antimicrobial properties. In this study, we assessed SCG as a substrate for the production of edible/biodegradable films.

Biological carrier improves passive protection of mice against Pseudomonas aeruginosa infection.

In a model experiment, the use of specific hyperimmune globulins (SHG) alone failed to protect mice against infection with homologous and heterologous P. aeruginosa serotypes. However, the therapeutic potential of SHG dramatically improved after its conjugation with A1(OH)3, used as a biological carrier.

New trends in the use of Al(OH)3-conjugated endotoxins and their subunits from the S- and R-forms of Shigella dysenteriae serovar 1 for model vaccination purposes.

The lipopolysaccharides, lipopolysaccharide-protein complexes and their lipids A, isolated from Shigella dysenteriae 1, exhibited lethal toxicity (LD50 300-400 micrograms per mouse), pyrogenicity (0.01-1.0 microgram), activity in the Limulus test (10(-3)-10(-12) mg ml-1) and produced a positive local Shwartzman reaction.