Table 3. Comparison of diacetyl production at different culture temperatures

Temperature (°C)	Diacetyl (mg/L)
	LRCC5306	ATCC393
0	0.0	0.0
10	0.0	0.0
20	20.64±0.51d	15.41±0.21c
25	18.32±0.64c	10.52±0.16a
30	14.25±0.13b	10.96±0.15a
37	11.48±0.16a	11.61±0.29b

Results are expressed as mean±SE (n=3).
L. casei ATCC393 was used as the reference strain. The initial concentration of diacetyl was 0.
Means in the same column with different lowercase superscript letters are significantly different at p<0.05.