Journal
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
Volume 98, Issue 11, Pages 4168-4176Publisher
WILEY
DOI: 10.1002/jsfa.8938
Keywords
DPPH; ORAC value; antioxidants; phenols; anthocyanins
Funding
- Department of Food Engineering, CONICYT-PCHA/National Doctorate [2016-21161653]
- FONDEQUIP [130209]
Ask authors/readers for more resources
BACKGROUNDFive drying methods (freeze, convective, sun, infrared, and vacuum drying) were applied to maqui berries to establish their effect on phenolic compounds and antioxidant capacity. Total phenolic, total flavonoid, and total anthocyanin contents were measured by spectrophotometry, anthocyanin and phenolic profiles were analyzed by chromatography, and the antioxidant capacity was determined. This study is probably the first to demonstrate the variation and stability of bioactive compounds from maqui berries after applying different drying methods. RESULTSThe highest content of phenolic and antioxidant compounds was obtained by using the freeze-drying method compared with fresh samples (P<0.05). Eight anthocyanins were identified in all dehydrated maqui samples. Compared with fresh maqui, freeze-dried samples retained 73% and 64% of delphinidin and cyanidin derivatives respectively. Sun- and vacuum-dried samples conserved some phenolic acids. Vacuum-dried maqui retained a higher amount of free flavonols. CONCLUSIONThis study demonstrated that the application of any drying method results in a final product with good levels of phenolic compounds. (c) 2018 Society of Chemical Industry
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available