Journal
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
Volume 89, Issue -, Pages -Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jfca.2020.103470
Keywords
Eutectic solvents; Blueberry; Anthocyanins; Green extraction; Food composition; Biocompatible
Categories
Funding
- National Council for Scientific and Technological Development (CNPq) [303654/2017-1]
- Institutional Scholarship Program (PIBIC)
- FIPE/UFSM Research Aid for New Doctors
- Coordination for the Improvement of Higher Education Personnel (CAPES) [001]
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The extraction of blueberry anthocyanins with natural deep eutectic solvents (NADES) based on choline chloride:glycerol:citric acid was optimized by simplex centroid design to find the best molar ratio for the solvent. Choline chloride:glycerol:citric acid at the molar ratio of 0.5:2:0.5 (NADES 6) was the optimal NADES for extraction. NADES 6 was as efficient as the conventional organic solvent (methanol:water:formic acid) when compared at the same sample:solvent ratio and yielded about 76 % of blueberry anthocyanins compared to an exhaustive extraction with the organic solvent. NADES 6 yielded higher proportion of arabinoside anthocyanins and lower proportion of galactoside anthocyanins than the organic solvent. Thus, NADES can be assumed as a cheaper substitute for organic solvents, yielding biocompatible extracts of blueberry that are selectively enriched in arabinoside anthocyanins.
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