TABLE 1.

Ratios of intensities of the Raman peaks at 1,572, 1,655, 1,667, and 1,017 cm⁻¹ in multiple individual unheated and dry-heat-treated B. subtilis spores^a

Raman peaks	Intensity ratio (AUb) for treatment parameters:
	Untreated	140°C, 7 min	140°C, 15 min	140°C, 30 min	140°C, 60 min	160°C, 90 min
I1572/I1017	0.400 ± 0.015	0.423 ± 0.014	0.430 ± 0.015	0.476 ± 0.015	0.513 ± 0.017	0.575 ± 0.054
I1667/I1655	0.883 ± 0.009	0.876 ± 0.008	0.868 ± 0.010	0.866 ± 0.011	0.856 ± 0.012	0.886 ± 0.007
						(0.990 ± 0.011)c

^aI₁₅₇₂, I₁₆₅₅, I₁₆₆₇, and I₁₀₁₇ values were determined by LTRS for 30 individual untreated and dry-heat-treated spores and averaged. Standard deviations are indicated.

^bAU, arbitrary units.

^cThis value of the I₁₆₆₇/I₁₆₅₅ ratio is from spores that had lost CaDPA.