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SEPARATION PROCESSES IN THE FOOD AND BIOTECHNOLOGY INDUSTRIES Principles and Applications Edited by A. S. GRANDISON and M. J. LEWIS Department of Food Science and Technology University of Reading, UK W O O D H E A DP U B L I S H I N G Cambridge England LIMITED Published by Woodhead Publishing Limited, Abington Hall, Abington, Cambridge CB 1 6AH, England First published 1996 0 1996, Woodhead Publishing Ltd Conditions of sale All rights reserved, No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording or any information storage and retrieval system, without permission in writing from the publisher. While a great deal of care has been taken to provide accurate and current information, neither the author, nor the publisher, nor anyone else associated with this publication shall be liable for any loss, damage or liability directly or indirectly caused or alleged to be caused by this book. British Library Cataloguing in Publication Data A catalogue record for this book is available from the British Library ISBN I 85573 287 4 Typeset by Heather FitzGibbon, Christchurch, Dorset Printed by Galliard (Printers) Ltd, Great Yarmouth, England Contents Preface ........................................................... xi .................................. Separation processes - an overview A . S. Grandison and M . J . Lewis 1.1 Foods - the raw material . . . ............................... 1.2 Separation techniques . . . ............................... 1.2.1 Introduction . . . . . . ............................... 1.2.2 Separations from solids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Solid-solid separations ................................. Separation from the solid matrix . . . . . . . .