Cellulose products modified with monomeric and gemini surfactants: antimicrobial aspects

Abstract

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Nanofibers functionalized with surfactants to Eliminate SARS-CoV-2 and other airborne pathogens

“…The presence of hydrophobicity and positive charges in biocides agents are excellent characteristics for their antimicrobial activity (LIN et al, 2002). Bacteria have an outer lipid-protein layer composed of lipopolysaccharides, giving the cell a negative charge (KOZIRÓG et al, 2019). Strong electrostatic attraction between a cell membrane and biocide is favorable for biocidal action (NECHITA et al, 2015).…”

“…The hydrophobic tail of quaternary ammonium salts can penetrate the hydrophobic microorganism membrane core, leading to structural proteins and enzyme denaturation (EMAM, 2019). For example, gemini surfactants show good effectiveness against bacteria and microscopic fungi due to their molecules' high positivity (KOZIRÓG et al, 2019). The alkyl groups' compounds that present a length chain between 12-14 exhibit better activity against Gram-positive bacterial strains.…”

“…Fungi and yeasts can also be affected by cationic surfactants' antimicrobial activity (BONVILA et al, 2008), reducing the number of fungal spores (KOZIRÓG et al, 2019).…”

Ionic liquids as potentially new antifungal agents against Alternaria species

“…10 Hence many novel chemicals have been developed recently, including utianil, pyriofenone, fenpyrazamine, tolprocarb, tebuoquin, and picarbutrazox, to reduce the presence and impact of seed-borne pathogens. 11 Considering this, ionic liquids (ILs) and salts with melting points below 100 C, which are well known to manifest antimicrobial activity, can also be used in the development of new sources of antimicrobial agents, such as antiseptics, biocides and antifungal agents [12][13][14][15] with a focus on sustainable environmental strategies. ILs have already been reported as alternative, "green", solvents for a wide range of reactions and technological processes.…”