Rich biotin content in lignocellulose biomass plays the key role in determining cellulosic glutamic acid accumulation by Corynebacterium glutamicum

Table 1 Vitamin B contents in the raw corn stover during biorefining chain (μg/kg DM)

Vitamin B members	In virgin corn stover	After washing	After pretreatment	In starch biomass^a
Thiamin (vitamin B1)	600	200	500	4100 (Rice) [30]
Riboflavin (vitamin B2)	2100	1100	4200	2600 (Corn) [30]
Niacin (vitamin B3)	7400	4600	2600	16000 (Corn) [49]
Pantothenate (vitamin B5)	1270	988	130	2000 (Rice) [30]
Pyridoxine (vitamin B6)	900	500	200	20000 (Corn) [50]
Biotin (vitamin B7)	353 ± 16	131 ± 1	121 ± 4	< 0.15 (Corn) [45]
Folic acid (vitamin B9)	118	108	< 20^b	19 (Rice) [51]
Cobalamin (vitamin B12)	7	6	< 1^b	N/A [30]

The standard deviations of biotin were derived from at least two independent determinations
^a Vitamin B compounds contents in starch biomass were referred to the references in the list
^b The contents were below the detection line

ISSN: 2731-3654