Enhanced anthocyanin extraction from red cabbage using pulsed electric field processing.
This study was conducted to evaluate the effect of pulsed electric field (PEF) treatment on anthocyanin extraction from red cabbage using water as a solvent. Mashed cabbage was placed in a batch treatment chamber and subjected to PEF (2.5 kV/cm electric field strength; 15 micros pulse width and 50 pulses, specific energy 15.63 J/g). Extracted anthocyanin concentrations (16 to 889 microg/mL) were determined using HPLC. Heat and light stabilities of the control and PEF-treated samples, having approximately the same initial concentrations, were studied. PEF treatments enhanced total anthocyanin extraction in water from red cabbage by 2.15 times with a higher proportion of nonacylated forms than the control (P < 0.05). The heat and light stabilities of the PEF-treated samples and control samples were not significantly different (P > 0.05). Practical Application: An innovative pretreatment technology, pulsed electric field processing, enhanced total anthocyanin extraction in water from red cabbage by 2.15 times. Manufacturers of natural colors can use this technology to extract anthocyanins from red cabbage efficiently.
Gachovska
Tanya
T
Electrical Engineering Dept., Univ. of Nebraska, Lincoln, NE 68583-0726, USA.
Cassada
David
D
Subbiah
Jeyamkondan
J
Hanna
Milford
M
Thippareddi
Harshavardhan
H
Snow
Daniel
D
D000215:Acylation; D000872:Anthocyanins / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification* / Q000528:radiation effects; D000975:Antioxidants / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification* / Q000528:radiation effects; D001937:Brassica / Q000737:chemistry*; D002851:Chromatography, High Pressure Liquid; D055664:Electrochemical Techniques / Q000295:instrumentation; D005505:Food Coloring Agents / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification* / Q000528:radiation effects; D005524:Food Technology / Q000379:methods*; D008027:Light / Q000009:adverse effects; D013058:Mass Spectrometry; D018515:Plant Leaves / Q000737:chemistry*; D013997:Time Factors
D000872:Anthocyanins; D000975:Antioxidants; D005505:Food Coloring Agents