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Common Methods in Microbial Control

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-Am<strong>in</strong>olaevul<strong>in</strong>ic acid<br />

(ALA): Endogenous<br />

ALA<br />

PpIX<br />

Small range of wavelength<br />

White light<br />

Halogen lamp<br />

LED (Light Emitt<strong>in</strong>g Diode)<br />

Merocyan<strong>in</strong>e 540<br />

(MC 540): Exogenous<br />

Laser (Light Amplification by Stimulated<br />

Emission of Radiation )<br />

9<br />

10<br />

Interact with cells only<br />

No adsorption or neutralization by EPS<br />

MW is generally small<br />

Less transport limitation<br />

B<strong>in</strong>d<strong>in</strong>g to cells<br />

Not related to physiology<br />

Already exist <strong>in</strong> cells<br />

Less chance to <strong>in</strong>duce resistant stra<strong>in</strong>s<br />

11<br />

12

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