2010•Nonwood Forest ResearchRequires access
Extraction techniques of pigment in sour plum pericarp
Ding Zhi-en
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Abstract
In order to improve development and utilization values of pigment in sour plum pericarp,pigment in sour plum pericarp was extracted with acetone as extraction solvent.The extraction techniques of pigment in sour plum pericarp were optimized by single-factor test(different volume fractions of acetone,ratios of material to extraction solution,extraction times and temperatures) and L934 orthogonal test,taking absorbance value(275 nm)and aberration value(L,a,b) as indexes.The results showed that the optimal extraction conditions of pigment in sour plum pericarp were 100% acetone as extraction solution,ratio of material to extraction solution 1∶16,temperature 25 ℃,time 2.5 hours.Pigment extracted from sour plum pericarp was yellow-green,had perfect absorbance and aberration values,and was of excellent natural pigment under the conditions.