The electrokinetic behavior of colloidal particles in three waterlogged soils at 38℃ was investigated with reference to the stability changes of soil colloidal suspensions under reductive conditions. The dispersed clay particles of the three sons exhibited a negative zeta (ζ) potential. The absolute value of the ζ-potential, |-ζ| of these soils in the earlier period of waterlogging decreased, which caused the flocculation of clay particles. The concentrations of divalent cations, i.e., Fe2+ and Ca2+ in the soil solutions were estimated to be higher than their critical flocculation concentrations (CFCs) on the basis of the observed CFCs of Fe2+ and Ca2+ for the clay suspension of halloysite as a reference. With the progression of the reduction process, clay particles of one soil still exhibited a low |-ζ| and fiocculated. The concentrations of Fe2+ and Ca2+ in the soil solutions were estimated to be higher than their CFCs, respectively. The clay particles of two sandy soils, however, showed an increase in |-ζ| due to the increase in pH and dispersed. The concentrations of Fe2+ and Ca2+ in the soil solutions were estimated to be lower than their CFCs, respectively. The stabil-ity changes of the soil colloidal suspensions by these divalent cations under sequential soil-reduction can be explained by the alteration of the Stern potential (-ψs), which determines the repulsion energy related to the potential energy of interaction'between two particles. The apparent decrease in the Ca2+ concentration of the soil solutions in the later period of waterlogging was explained largely by the re-adsorption of water-soluble Caz+ on the exchange sites of soil clays with the decrease in the Fe2+ concentration in the soil solution.

以麝香百合渣、麝香百合膳食纤维和卷丹渣为原料进行实验，并通过建立便秘模型，了解百合膳食纤维对小白鼠润肠通便功能的影响，实验结果证明，百合膳食纤维极显著缩短了小鼠的首次排便时间（p<0.Ol），麝香百合渣、卷丹渣能够增加小鼠的排便质量，其有效剂量为7.8g/kg，当剂量达到15.6g/kg时，所有实验组均能极恩著增加排便质量，中浓度卷丹渣能显著提高粪便含水率（p<0.05），高浓度百合膳食纤维能够极显著增加小鼠粪便含水率(p<0.01)。中、高浓度的百合膳食纤维能极显著增加小肠推进率(p<0.01)。由此说明，百合膳食纤维能改善便秘模型小鼠的通便功能，并且以高浓度百合膳食纤维的效果最佳。

以H2O2作漂白荆，探讨了淀粉乳浓度、H2O2用量、反应时间、反应温度和pH等因素对百合淀粉白度的影响，并用正交实验确定了百合淀粉漂白的最佳工艺条件。结果表明，在酸性条件下，其白度值随H2O2的添加量、温度和时间的增加而增大，随淀粉乳浓度和pH的增加而减小；最适宜的漂白工艺条件为淀粉乳浓度50%，H2O2添加量50%．反应温度40℃，反应时间30min，pH3.0。

实验以麝香百合渣、卷丹渣和麝香百合膳食纤维为受试物，探讨其对小白鼠消化吸收功能的影响。结果表明：中、高浓度百合膳食纤维能极显著地增加小白鼠的摄食量、重量和小肠推进率(p<0.01)；低浓度麝香百合渣能显著增加小白鼠摄食量(p<0.05)；小白鼠的食物利用系数随灌胃浓度的增加而增加，高浓度麝香百合膳食纤维作用更为显著(p<0.05)。综上所述，百合膳食纤维能够促进小白鼠的消化吸收，并以高浓度麝香百合膳食纤维的效果最佳。

Flocculation and dispersion of colloidal particles of nine inorganic paddy soils were studied mainly based on turbidity measurements of the suspensions of soils which were prev:iously incubated at 28℃ under in, vitro waterlogged conditions. After l-week of incubation, the turbidity of the soils except for l) two soils containing larger amounts of sodium salts and 2) one soil containing larger amounts of Fe and Al oxides, significantly decreased, and colloidal particles flocculated with l) a decrease in soil Eh and 2) an increase in electric conductiv-ity (EC). During the 3-t0 4-week period of waterlogging, the turbidity of the three soils significantly increased with the l) decrease in EC and 2) increase in pH of the soils although the Eh remained low. Infrared (IR) absorption analysis showed that the suspended colloidal particles consisted of layer sili-cates from respective soil clays. Oxidation of suspensions of waterlogged soils by air-bubbling led to an increase in turbidity with the l) increase in Eh, and 2) decrease in pH, EC, and water-soluble Fe2+ concentration. It was suggested that the stability of the soil colloidal suspensions was affected by soil reduction with alterations in ionic species and their concentrations at clay surfaces and in soil solutions.