期刊
FOOD CHEMISTRY
卷 304, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2019.125383
关键词
Aqueous two-phase separation; Ultrasonic cell disruption extraction; Solanine; Solanum nigrum polysaccharide; Determination
资金
- National Natural Science Foundation of China [21606099]
- Natural Science Foundation of Jilin Province [20150520062JH, 20180623042TC]
- Science and Technology Research Foundation of Jilin Province Department of Education [JJKH20170376KJ]
An aqueous two-phase system was used in conjunction with ultrasonic cell disruption to extract and separate solanine (mainly solasonine and solamargine) and Solanum nigrum polysaccharide from Solanum nigrum unripe fruit. The optimized conditions of the present study were determined by a single-factor experiment and a multifactor experiment. The concentration of ethanol was set at 60% and the duration of the ultrasonic cell disruption extraction was 50 min. In the ethanol-K2CO3 aqueous two-phase separation system, the concentration of ethanol was 36%, the concentration of K2CO3 was 0.21 mg.mL(-1), and the temperature was 15 degrees C. The solasonine and solamargine were determined by high-performance liquid chromatography, and the Solanum nigrum polysaccharide was determined by an ultraviolet-visible spectrophotometer in accordance with the phenol-sulfuric acid method. xUnder optimized conditions, the average extraction efficiencies of solasonine, solamargine and Solanum nigrum polysaccharide were 95.86%, 95.95% and 96.95%, respectively, and the average separation efficiencies of solasonine, solamargine and Solanum nigrum polysaccharide were 2.07 mg.g(-1), 2.05 mg.g(-1) and 8.15 mg.g(-1), respectively.
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