Development of inorganic low toxicity biocides

• Grant number: 02/12884-6
• Support Opportunities: Research Grants - Innovative Research in Small Business - PIPE
• Start date: October 01, 2003
• End date: August 31, 2004
• Field of knowledge: Biological Sciences - Microbiology - Applied Microbiology
• Principal Investigator: Henrique Akira Ishii
• Grantee: Henrique Akira Ishii
• Company: Ipel Itibanyl Produtos Especiais Ltda
• City: Jarinu

Abstract

This project proposes the development of an inorganic antimicrobial biocide, salts based on silver with additions of zinc and/or copper nitrates, with a ceramic substrate (tricalcic phosphate, titanium dioxide and calcium silicate); its use covers the areas of treatment of drinking water, surgical-hospital materials (for example, catheters, dialysis tubes, floor and fabrics), cosmetics, paints and coverings, polymers and ceramics. Among the most attractive advantages of the use of inorganic biocides as concerns biological and environmental demands and antimicrobial activity, are the following: 1) low or non-existent toxicity for human beings, hence, its use for application in cosmetics and the treatment of drinking water; 2) absence of risk to the environment; 3) it is not leached (eliminated by being washed away or by rain, for example), which makes it ideal for application in fabrics, ceramics and paints; 4) long useful life. Inorganic antimicrobials offer advantages in these areas when compared to traditional biocides (based on organic compounds) at a significantly lower cost. In addition, this project should result in a technological gain for the country since it involves the development of a product without national equal. (AU)