Calcium oxalate crystals in taros were characterized by Optical Microscopy, Scanning Electron Microscopy and Energy Dispersive X-ray Analyzer on SEM.

• 利用光学显微镜、扫描式电子显微镜、能谱仪观察芋头中草酸钙结晶的特性，结果显示红梗芋中有四种草酸钙结晶形态，分别是针形、图形、砂形及角柱形。