Optimization of Polyphenols’ Recovery from Purple Corn Cobs Assisted by Infrared Technology and Use of Extracted Anthocyanins as a Natural Colorant in Pickled Turnip

An ecofriendly extraction technology using infrared (IR) irradiation Ired-Irrad® was applied to purple corn cobs to enhance polyphenol recovery for the first time. The IR extraction efficiency was compared to that of the water bath (WB) method. Response surface methodology (RSM) using a central comp...

Full description

Saved in:
Bibliographic Details
Published in:Molecules (Basel, Switzerland) Switzerland), 2022-08, Vol.27 (16), p.5222
Main Authors: Barba, Francisco J., Rajha, Hiba N., Debs, Espérance, Abi-Khattar, Anna-Maria, Khabbaz, Stéphanie, Dar, Basharat Nabi, Simirgiotis, Mario J., Castagnini, Juan Manuel, Maroun, Richard G., Louka, Nicolas
Format: Article
Language:English
Subjects:
Acids
Anthocyanin
Anthocyanins
Antioxidants
Carcinogens
Coloring agents
Coloring matter
Corn
Design optimization
Glucosides
High performance liquid chromatography
I.R. radiation
infrared-assisted extraction
Irradiation
Liquid chromatography
Natural & organic foods
natural colorant
Optimization
Phenolic compounds
Phenols
Polyphenols
purple corn cobs
Raw materials
Response surface methodology
Rhodamine
Solvents
Technology
Turnips
Water baths
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:An ecofriendly extraction technology using infrared (IR) irradiation Ired-Irrad® was applied to purple corn cobs to enhance polyphenol recovery for the first time. The IR extraction efficiency was compared to that of the water bath (WB) method. Response surface methodology (RSM) using a central composite design was conducted to determine the effect of the experimental conditions (extraction time and treatment temperature) and their interactions on the total polyphenol and anthocyanin yields. Optimal extraction of total phenolic compounds (37 mg GAE/g DM) and total monomeric anthocyanins (14 mg C3G/g DM) were obtained at 63 °C for 77 min using IR as an extraction technique and water as a solvent. HPLC revealed that the recovery of peonidin 3-O-glucoside and cyanidin 3-O-glucoside was enhanced by 26% and 34%, respectively, when using IR. Finally, purple corn cobs’ spray-dried extract was proven to be an important natural colorant of pickled turnip. It offers great potential for use as a healthy alternative to the carcinogenic rhodamine B synthetic dye, which was banned.
ISSN:1420-3049
1420-3049
DOI:10.3390/molecules27165222