. 2020 Jun 4;98(6):skaa173. doi: 10.1093/jas/skaa173

Table 1.

Overall metabolic activity in terms of acidification and gas production¹

Parameter	Time, h	Blank	0.5 g/d	1 g/d	2 g/d
Gas pressure, pKa	∆ 0 to 6	13.0^a	14.9^b	16.1^c	17.9^d
		(0.5)	(0.2)	(0.3)	(0.3)
	∆ 6 to 24	13.3^a	14.9^a,b	14.9^a	16.5^b
		(0.6)	(0.9)	(0.4)	(0.5)
	∆ 24 to 48	4.0^a	4.5^a,b	5.0^a,b	5.8^b
		(0.3)	(1.2)	(0.3)	(0.5)
pH	∆ 0 to 24	−0.05^a	−0.06^a	−0.04^a	−0.09^a
		(0.01)	(0.02)	(0.03)	(0.01)
	∆ 24 to 48	−0.05^a	−0.04^a	−0.04^a	−0.04^a
		(0.01)	(0.01)	(0.01)	(0.01)

¹pH change between 0 and 24 and 24 and 48 h and increase in gas pressure (kPa) between 0 and 6, 6 and 24, and 24 and 48 h (±stdev) upon fermentation of three different concentrations of the S. cerevisiae-based test product (0.5, 1, and 2 g/d) by the canine fecal microbiota vs. the respective blank negative control (n = 3). The different test conditions were statistically compared for each experimental parameter and time point and statistical differences were indicated with different letters (P < 0.05).