Sphenostylis stenocarpa (Hochst. ex A. Rich.) Harms, is a legume widely recognized in Africa for its edible starchy tuber and seeds. In the present morphological, structural and functional properties of starch extracted from the tubers and seeds of a same accession of this plant were characterized and compared. With smaller and more angular granules, tuber starch displayed higher resistance toward amylolysis and gelatinization than seed starch. The amylolysis of seed starch resulted in fragmented granules with typical layered structures of growth rings. During their hydrothermal treatments, both tuber and seed starches showed condensed ghosts even at 95 °C. This high resistance toward hydrothermal degradation was considered as the basis of the typical pasting properties of these two materials. Both seed and tuber starch exhibited A-type crystalline pattern. Under non-oxidative combustion tuber starch presented a degradation peak at 310 °C while seed starch was degraded around 302 °C.

中文翻译：

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从硬皮Sphenostylis stenocarpa的块茎和种子中提取的淀粉颗粒的形态，结构和功能特性

剑果木（Hochst。ex A. Rich。）危害，是一种在非洲因其食用淀粉状块茎和种子而广为人知的豆类。在本发明中，表征并比较了从相同植物的块茎和种子中提取的淀粉的形态，结构和功能特性。块茎淀粉与种子淀粉相比，具有更小且更具棱角的颗粒，对淀粉分解和糊化的抵抗力更高。种子淀粉的淀粉水解产生具有典型的年轮分层结构的破碎颗粒。在水热处理过程中，块茎和种子淀粉即使在95°C时也显示出冷凝的鬼影。这种对水热降解的高抵抗力被认为是这两种材料典型的粘贴特性的基础。种子和块茎淀粉均表现出A型结晶模式。