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. 2020 Sep 17;5(38):24964–24972. doi: 10.1021/acsomega.0c03932

Table 5. Glucose Formation Rate Constants of Malto-Oligosaccharides and Starch over the AC-SO3H, Amberlyst 70 and 0.01 M H2SO4a.

    rate constant k/L mol–1 h–1
    
saccharides DP k1: AC-SO3H k2 (k2′): Amberlyst 70 k3: 0.01 M H2SO4 k1/k3 k2/k3
maltose 2 45 20 (42) 41 1.1 0.50
maltotriose 3 66 12 (29) 34 1.9 0.34
maltotetraose 4 1.1 × 102 10 (n.d.) 31 3.4 0.30
maltopentaose 5 2.2 × 102 9.2 (29) 33 6.7 0.28
starch 30 1.4 × 103 14 (74) 1.2 × 102 12 0.11
a

Reaction conditions: 0.5–25 mg saccharides, 20 mg catalyst, 2 mL distilled water (or dilute acid) at 120 °C for 10 min–12 h.