1. Zero waste biorefining of lingonberry (Vaccinium vitis-idaea L.) pomace into functional ingredients by consecutive high pressure and enzyme assisted extractions with green solvents.
- Author
-
Kitrytė V, Kavaliauskaitė A, Tamkutė L, Pukalskienė M, Syrpas M, and Rimantas Venskutonis P
- Subjects
- Anthocyanins analysis, Anthocyanins chemistry, Antioxidants analysis, Antioxidants chemistry, Carbon Dioxide chemistry, Ethanol chemistry, Fruit chemistry, Galactosides analysis, Galactosides chemistry, Green Chemistry Technology, Industrial Waste, Multienzyme Complexes chemistry, Multienzyme Complexes metabolism, Pressure, Proanthocyanidins analysis, Proanthocyanidins chemistry, Water, Chemical Fractionation methods, Solvents chemistry, Vaccinium vitis-idaea, Waste Management methods
- Abstract
Due to the lack of innovative valorization strategies, berry pomaces are a poorly utilized as a cheap source of valuable nutrients and phytochemicals. An effective biorefining scheme was developed to recover functional components from lingonberry pomace by consecutive supercritical CO
2 (SFE-CO2 ), pressurized liquid (PLE) and enzyme assisted (EAE) extractions. SFE-CO2 at optimized parameters yielded 11.8 g/100 g of lipophilic fraction, containing 43.3 and 37.4% of α-linolenic and linoleic fatty acids, respectively. The combined PLE with ethanol and water additionally recovered 61.8 g/100 g of polar constituents and reduced the antioxidant capacity of starting material by up to 94%. The major portion of the antioxidants (89-94% in different assays), anthocyanins (231 mg/100 g pomace) and proanthocyanidins (15.9 g/100 g pomace) was present in PLE-EtOH extract. Cyanidin-3-galactoside was the major anthocyanin (146.9 mg/100 g). High-pressure fractionation was more efficient for obtaining bioactive pomace constituents as compared with conventional and enzyme-assisted extractions., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2020 Elsevier Ltd. All rights reserved.)- Published
- 2020
- Full Text
- View/download PDF