2013•Science and Technology of Cereals,oils and FoodsRequires access
Study on the extraction of pigment from purple sweet potato by water extraction technology
Dong Xin-rong
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Abstract
The purple sweet potato pigment was extracted by water extraction.The single factor tests of pH,material/liquid ratio,extraction time and temperature were performed to ascertain the condition.The optimal technical conditions were obtained by orthogonal test,which were pH 3(HCl),material/liquid ratio 1∶ 2(g/mL),at 25 ℃for 2 h,and extracting for three times,the extraction rate of pigment was 94.85%.