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Erschienen in:
2016 | OriginalPaper | Buchkapitel
Comparison of the Efficacy of Pulsed Electric Fields Treatments in the Millisecond and Microsecond Range for the Extraction of Betanine from Red Beetroot
verfasst von : E. Luengo, J. M. Martinez, I. Álvarez, J. Raso
Erschienen in: 1st World Congress on Electroporation and Pulsed Electric Fields in Biology, Medicine and Food & Environmental Technologies
Verlag: Springer Singapore
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The efficiency of PEF treatments in the range of milliseconds (0.4 to 0.6 kV/cm; 10 to 60 ms) and in the range of microseconds (4 to 6 kV/cm; 30 to 150
μ
s) has been compared for the extraction of betanine from red beet. Both PEF-treatments in the milliseconds and in the microseconds range improved the extraction of betanine in comparison to the control. Similar betanine extraction was obtained with pulses of milliseconds and microseconds under the PEF conditions that resulted in the maximum betanine extraction. The more intense treatment conditions applied in the ms range (0.6 kV/cm; 40 ms) and the
μ
s range (6 kV/cm; 150
μ
s) increased the BEYmax 6.7 and 7.2 times, respectively, compared with the control. However, lower specific energy was involved in the PEF-treatments applied in the range of
μ
s (28.8 kJ/kg) than in the PEF-treatments applied in the ms range (43.2 kJ/kg).