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. Author manuscript; available in PMC: 2012 Sep 4.
Published in final edited form as: Anal Chem. 2011 May 9;83(11):4137–4146. doi: 10.1021/ac2001498

Figure 3 (a).

Figure 3 (a)

Second derivative transformation of FT-IR spectral features of E. coli O157:H7 treated with 10 μM diallyl sulfide at 22°C for different time intervals (black: 0 day, purple: 1 day, green: 3 day, blue: 5 day, red: 7 day).