Chapter 7 The Control of Microbial Growth
Chapter 7 The Control of Microbial Growth
Chapter 7 The Control of Microbial Growth
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Heavy Metals<br />
Oligodynamic action: toxic effect due to metal ions<br />
combining with sulfhydryl (—SH) and other groups<br />
proteins are denatured.<br />
• Mercury (HgCl 2, Greeks & Romans<br />
for skin lesions); Thimerosal<br />
• Copper against chlorophyll containing organisms<br />
Algicides<br />
• Silver (AgNO 3 ): Antiseptic for eyes <strong>of</strong> newborns<br />
• Zinc (ZnCl 2 ) in mouthwashes, ZnO in antifungal in<br />
paint<br />
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