Adsorption and Thermostability of Antimicrobial Agents on Synthetic Ceramic Powder
2000
Kim Hyun-Soo | Seong Lim-Shik Keimyung University, Taegu (Korea Republic)
The adsorption of the antimicrobial agents and their heat-resistance were investigated for the packaging film manufacture, wherein, the antimicrobial agents were adsorbed on a ceramic component. The naturally sourced antimicrobial agents were produced by methylotropic actinomycetes strains MO-16 and MO-17, extracted with ethylacetate. Antimicrobial action was stable to 121 degrees and 1 atm. for 30 min., showing wide-ranging activity to the Gram(+) and the Gram(-) bacteria. Antimicrobial agents, adsorbed on ceramic Ce-1, retained activity to the Gram(+) and the Gram(-) species at 105 degrees and 230 degrees heat treatment, and methanol extracted antimicrobial agents from Ce-1 treated at 230 degrees for 30 min., retained activity to Gram(+) bacteria. In the presence of oxygen during the heat treatment process, antimicrobial agents adsorbed on ceramic Ce-1 showed antimicrobial activity to Gram(+) and the Gram(-) bacteria.
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