Hansen W E, Schulz G
Hepatogastroenterology. 1982 Aug;29(4):157-60.
In vitro the influence of wheat bran, guar gum, psyllium and lignin (2.5-50 g/l) on porcine pancreatic amylase (5-10 U/ml) was investigated. Enzyme activity was decreased in the presence of these substances with the exception of lignin. The reduction depended upon fiber concentration. In bran (50 g/l) it was 92 +/- 1%, in guar gum (25 g/l) 46.3 +/- 0.6%, and in psyllium (50 g/l) 41 +/- 1.4%. The effect was partly reversible if urea (1M) was added. Variations in pH (5.8-7.8) had no influence. Glucose formation from starch catalyzed by amylase was inhibited in the presence of bran, guar gum and psyllium, suggesting that the observed effect was also of functional significance.
在体外研究了麦麸、瓜尔胶、车前子壳和木质素（2.5 - 50克/升）对猪胰淀粉酶（5 - 10单位/毫升）的影响。除木质素外，这些物质存在时酶活性降低。这种降低取决于纤维浓度。在麦麸（50克/升）中降低了92±1%，在瓜尔胶（25克/升）中降低了46.3±0.6%，在车前子壳（50克/升）中降低了41±1.4%。如果加入尿素（1M），这种作用部分可逆。pH值（5.8 - 7.8）的变化没有影响。在麦麸、瓜尔胶和车前子壳存在的情况下，淀粉酶催化淀粉生成葡萄糖受到抑制，这表明观察到的作用也具有功能意义。
