secretion fluids; g. pre-filter; h. dialysis membrane (hollow fiber); i. dialysate collection; k. pH electrode; I. pressure sensor; m . level sensor. Figure 6 graphs the sucrose [mg] in the dialysate (bioaccessible fraction) and intestinal residue fraction at the end of the experiments and before brush border treatment (average – sd, n=2) - see Example 7 . Figure 7 graphs the bioaccessible glucose+fructose [mg] measured over time in tiny- TIMcarbo dialysate samples treated with brush border enzymes (average – sd, n=2) - see Example 7 . Figure 8 graphs the cumulative bioaccessible glucose+fructose [mg] measured over time in tiny-TIMcarbo dialysate samples treated with brush border enzymes (average – sd, n=2) - see Example 7 . Figure 9 is a schematic representation of TIM-2. A . peristaltic compartments; B. pH- electrode; C. alkali pump; D. dialysis liquid circuit with hollow fibers; E. level-sensor; F. N2 gas inlet; G . sampling port; H. gas outlet; I. ’ileum effluent’ container; J. temperature sensor. Figure 10 graphs the cumulative ammonia production during the experimental period of 80h in TIM-2 for each test condition, expressed in mmol (mean – stdev, n=3). * indicate p<0.05 (Tukey’s test). Figure 11 is a multidimensional scaling (MDS) plot showing variation in samples from luminal content after 80h in TIM-2 under different test conditions (7g sugar cane bagasse, 3.5 g sugar cane bagasse, cellulose); n=3 per test condition; SCB: sugar cane bagasse - see Example 8 . Figure 12 is a heatmap depicting genera-level bacteria selected from the MDS plot (see figure 9); row normalized values were used (ratio of value per test condition / average of all test conditions per row) - see Example 8 . Normalized values are as indicated in the legend. For instance, a value of 2 indicates an increased abundance of bacteria in the test condition relative to the average of all test conditions per row. Figure 13 is a heatmap representing the shift in relative abundance of bacteria over time for sugar cane bagasse (SGB) test products compared to the shift over time for cellulose. - see Example 8. Shifts in relative abundance are as indicated in the legend, with darker shades indicated a greater shift.