Factors Involved in the In Vitro Fermentability of Short Carbohydrates in Static Faecal Batch Cultures

Table 3

Halftime of fermentation, expressed as 𝑇₅₀ values (hours), of substrates (0.5% (w/v) except substitution group: 1% (w/v)) in static faecal batch culture incubations (𝑛=3). Production of total organic acids over 24, 48 and 72 h was used to calculate 𝑇₅₀ values.

		𝑇50[hours]	SE
	Glucose	3.46^a	±0.46
	Raffinose	3.53^ab	±0.28
	Sucrose	3.94^ab	±0.28
	Lactulose	4.08^ab	±0.36
	Lactose	4.18^ab	±0.08
	Melezitose^†	8.65^d	±0.90
Monomer composition	Glucose	4.42^a	±0.66
	D-mannose	5.51^b	±0.33
	L-rhamnose	8.25^d	±0.91
	Glucose	5.51^a	±0.44
	L-arabinose	7.83^c	±0.31
	D-xylose	10.27^d	±0.51
	D-arabinose	11.31^d	±0.45
	L-xylose	11.72^d	±0.54
	Glucose	5.21^a	±0.26
	Maltose	5.93^b	±0.45
Linkage	Gentiobiose	6.23^c	±0.17
	Cellobiose	7.33^c	±0.29
	Isomaltose	7.45^d	±0.88
	Galactose	11.09^ac	±1.46
	Methylgalactose	15.93^ab	±0.24
Substitution	Galactose penta-acetate	20.65^d	±0.62
	Galactitol	24.35^bd	±1.61
	D-Fucose	19.49^c	±1.14
	Glucose	3.90^a	±0.22
	GlcNAc	4.87^b	±0.14
Derivatisation	Glucosamine	5.77^b	±0.98
	Galacturonic acid	10.85^c	±1.26
	Glucuronic acid^†	11.63^c	±0.75
	Glucose	4.19^a	±0.12
	Vivinal-GOS	4.17^a	±0.16
Chain length	GOS^0	4.37^ac	±0.18
	GOS^1	4.92^b	±0.14
	GOS^2	5.02^b	±0.12
	GOS^3	4.82^bc	±0.16

GOS: galactooligosaccharide.
Different superscript letters indicate significant differences within each group (𝑃<0.05).
^†𝑛=2.