本研究透過市售添加奈米鈣之奶粉，利用粉末X光繞射儀來取得奈米食品中奈米鈣添加物之X光繞射譜圖，判定其奈米食品中奈米鈣化合物之結晶結構與晶粒平均晶粒大小。由研究顯示，這些添加奈米鈣之奶粉，經加工後，不但鈣結晶結構有所轉移，亦會產生部分之異相氧化物或結晶水型態之結構。本研究團隊成功地以X光粉末繞射技術建立對奈米鈣添加於奶粉中之結構鑑定技術平台，可有效的進行奈米食品之結構變異辨識，亦可作為奈米添加物在加工後穩定度上之判定依據。

X-ray diffraction patterns of nano-calcium in milk samples obtained from market, to determine their crystal structures and average grain size. The results indicated that after processing, nano-calcium in milk powders not only prompt the transformation of crystal structure, but also partially generate oxide structures or even hydrated structures known as the hetero phase. The methodology of using X-ray powder diffraction for the structural identification of nano-calcium compounds in milk powders has been successfully established in this study. This methodology can be applied to characterize the compounds and reveal the stability of the nano-scale additives in nano-food technology.