国产日产欧美精品-亚洲国产综合久久精品-色综合色国产热无码一-亚洲欧美日本国产,免费观看一区二区三区_在线观看片A免费不卡观看_亚洲а∨天堂久久精品_99久无码中文字幕一本久道

 Morphological and conformational transitions of lentinan (LT), a ˇ-glucan extracted from Shiitake mush-rooms (Lentinula edodes), were investigated at different concentrations of aqueous NaOH, using SmallAngle X-ray Scattering (SAXS) technique. At low NaOH(aq)concentration LT chains are self-associatedand adopt the triple helix form where as at higher NaOH concentrations the polymer chains undergo atransition to random coil chains. Also, the presence of fractal dimensions was observed through analysisof the exponential decay of the scattering intensity as a function of the scattering angle. In addition, thelateral radius of gyration was determined for LT in different concentrations of NaOH solution, indicating arigid triple helix present as a small rod-like structure. Interactions of LT with two zwitterionic surfactantswere investigated by surface tension, fluorescence, and static light scattering measurements. Experimen-tal data showed that the formation of LT–(surfactant) complexes occurred through a cooperative process.