We isolated and investigated the starch of six potato cultivars (Solanum tuberosum), grown in the Andean region in the south of Colombia, to determine their physicochemical properties. The potato cultivars are known by their common names as Mambera, Ratona, Pastusa, Capiro, Unica and Roja-huila. The minerals, amylose content, water absorption and water solubility of the starches were evaluated. Morphology, crystalline structure, gelatinisation, thermal degradation and viscosity were also determined. The results showed that Capiro starch has a high mineral content. The apparent amylose and phosphorus contents in starch isolated from Mambera, Ratona and Pastusa were higher than those from Unica and Roja-huila. The starches with higher amylose content and better-defined peak in X-ray diffraction (XRD) (Mambera, Ratona and Capiro) had higher gelatinisation temperatures and took more time to reach the viscosity peak. All starches have hexagonal crystalline structure (B-type). The final viscosity of starches isolated from Mambera and Ratona was higher than that from Unica, Roja-huila and Pastusa due to their higher apparent amylose content.

我们分离并研究了六个哥伦比亚哥伦比亚南部安第斯地区种植的马铃薯品种（Solanum tuberosum）的淀粉，以确定其理化特性。马铃薯品种的俗名是Mambera，Ratona，Pastusa，Capiro，Unica和Roja-huila。评价了淀粉的矿物质，直链淀粉含量，吸水率和水溶性。还确定了形态，晶体结构，糊化，热降解和粘度。结果表明，卡皮罗淀粉具有很高的矿物质含量。从Mambera，Ratona和Pastusa分离出的淀粉中表观直链淀粉和磷含量高于Unica和Roja-huila。具有更高直链淀粉含量和在X射线衍射（XRD）中具有更好定义的峰的淀粉（Mambera，Ratona和Capiro）具有更高的糊化温度，并且花费更多的时间才能达到粘度峰。所有淀粉均具有六方晶体结构（B型）。从Mambera和Ratona分离的淀粉的最终粘度高于Unica的最终粘度，Roja-huila和Pastusa由于其较高的表观直链淀粉含量。