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Effect of Process Parameters on Solute Centrifugal Extraction from Electropermeabilized Carrot Gratings

Paper ID Volume ID Publish Year Pages File Format Full-Text
19568 43076 2007 5 PDF Available
Title
Effect of Process Parameters on Solute Centrifugal Extraction from Electropermeabilized Carrot Gratings
Abstract

The solute aqueous centrifugal extraction from carrot gratings was investigated through the effect of some process parameters (centrifugal acceleration, solution temperature and liquid to solid ratio). The carrot gratings were treated by a pulsed electric field (PEF) (670 V cm−1 and 300 pulses of 100 μs) and then subjected to an aqueous centrifugal extraction (accelerations from 14 × g to 5434 × g) at temperatures in the range 18–35°C. The effect of carrot tissue mild preheating (30–50°C) before PEF was also investigated.The increase of centrifugal acceleration up to 150 × g enhances extraction kinetics. The solute concentration then reaches 96% after 25 min of extraction at room temperature or after 15 min of extraction at 35°C. However, any further increase in centrifugal acceleration does not provide more acceleration of extraction. A tissue preheating at 50°C allowed an easier electrical permea-bilisation of cell membranes at lower PEF intensity (300 V cm−1) and shorter PEF extent (30 pulses). A maximum solute yield is then obtained. The kinetics of centrifugal aqueous extraction was described by a single exponential model.

Keywords
aqueous extraction; pulsed electric field; carrot; permeabilization; cellular membrane; centrifugal acceleration
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Effect of Process Parameters on Solute Centrifugal Extraction from Electropermeabilized Carrot Gratings
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Publisher
Database: Elsevier - ScienceDirect
Journal: Food and Bioproducts Processing - Volume 85, Issue 1, March 2007, Pages 24–28
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us