Table 2.

Amount of muropeptides and overall crosslinking degree (%) of BB270 and SR18 grown with xylose or glucose

Strain	Monomer*	Dimer*	Trimer*	Oligomer*	CL†
BB270 xylose	4.2	7.9	7.5	80.4	81.3
BB270 glucose	6.7	11.2	10.0	72.1	77.2
SR18 xylose	5.0	8.8	7.9	78.3	80.2
SR18 glucose	19.9	11.7	9.0	59.4	65.4

^*Peak areas of the indicated fractions were added and calculated in percent. 

^†The value was calculated as follows: 0.5 × dimer (%) + 67 × trimer (%) + 0.9 × oligomer (%) = CL (crosslinking) (33).