a b s t r a c t
Dynamic high pressure microfluidization (DHPM) is an emerging technology utilizing the collective forces of high-
velocity
impact, high-frequency vibration, instantaneous pressure drop, intense shear, cavitation, and ultra-high
pressures.
DHPM technology was applied to improve the extraction of flavonoids from sweet potato leaves, and its
effect
was evaluated using six samples under various conditions. Pretreatment with DHPM was found to strengthen
the
antioxidant activities of the flavonoid, while no treatment or post-treatment with DHPM, produced weaker antiox-
idant
activities. This suggests that the DHPM technology may provide a promising method of utilizing sweet potato
leaves
as a natural antioxidant in food and pharmaceutical industry.
© 2012 The Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved
a b s t r a c tDynamic high pressure microfluidization (DHPM) is an emerging technology utilizing the collective forces of high-velocityimpact, high-frequency vibration, instantaneous pressure drop, intense shear, cavitation, and ultra-highpressures.DHPM technology was applied to improve the extraction of flavonoids from sweet potato leaves, and itseffectwas evaluated using six samples under various conditions. Pretreatment with DHPM was found to strengthentheantioxidant activities of the flavonoid, while no treatment or post-treatment with DHPM, produced weaker antiox-idantactivities. This suggests that the DHPM technology may provide a promising method of utilizing sweet potatoleavesas a natural antioxidant in food and pharmaceutical industry.© 2012 The Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved
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