Food Science & Technology Baldwin Hagenmaier Edible Coatings and Films Bai to Improve Food Quality Since the publication of the first edition of this text, ever-increasing coatings research has led to many developments in the field. Updated and completely tE SECOND EDITION revised with the latest discoveries, Edible Coatings and Films to Improve o d Food Quality, Second Edition is a critical resource for all those involved in I buying, selling, regulating, developing, or using coatings to improve the quality i mb and safety of foods. Topics discussed in this volume include: l pe • The materials used in edible coatings and films r • The chemical and physical properties of coatings and how the coating C o or film ingredients affect these properties vo • How coatings and films present barriers to gases and water vapors • How coatings and films can improve appearance, or conversely, result ea in discoloration and cause other visual defects, as well as how to avoid t F i these problems n o • The use of coatings and films on fresh fruit and vegetables, g fresh-cut produce, and processed foods o s • How to apply coatings to various commodities d • How coatings can function as carriers of useful additives, including a Q color, antioxidants, and flavorings n • Regulation of coatings and coating ingredients by various governing bodies ud a The information contained in this volume is destined to encourage further F advances in this field for food and pharmaceutical products. Aggressive l ii research into these products can help to reduce plastic waste, improve tl ym applications, lead to greater efficacy, and make regulatory decisions easier in a global climate—ultimately resulting in economical, heightened quality s of food and pharmaceutical products. SECOND EDITION EDITED BY Elizabeth A. Baldwin 59629 Robert Hagenmaier • Jinhe Bai ISBN: 978-1-4200-5962-5 90000 9 781420 059625 Edible Coatings and Films to Improve Food Quality SECOND EDITION Edible Coatings and Films to Improve Food Quality SECOND EDITION EDITED BY Elizabeth A. Baldwin Robert Hagenmaier • Jinhe Bai Boca Raton London New York CRC Press is an imprint of the Taylor & Francis Group, an informa business Cover photo credits, from top to bottom, left to right: Peggy Greb, USDA, Agricultural Research Service; USDA, Anita Daniels, Agricultural Research Service; Shutterstock Images LLC; Tracy Griffith, NewGem Foods; Guiwen Cheng, JBC FoodTech; Shutterstock Images LLC. CRC Press Taylor & Francis Group 6000 Broken Sound Parkway NW, Suite 300 Boca Raton, FL 33487-2742 © 2012 by Taylor & Francis Group, LLC CRC Press is an imprint of Taylor & Francis Group, an Informa business No claim to original U.S. Government works Version Date: 20110517 International Standard Book Number-13: 978-1-4200-5966-3 (eBook - PDF) This book contains information obtained from authentic and highly regarded sources. Reasonable efforts have been made to publish reliable data and information, but the author and publisher cannot assume responsibility for the validity of all materials or the consequences of their use. The authors and publishers have attempted to trace the copyright holders of all material reproduced in this publication and apologize to copyright holders if permission to publish in this form has not been obtained. If any copyright material has not been acknowledged please write and let us know so we may rectify in any future reprint. Except as permitted under U.S. Copyright Law, no part of this book may be reprinted, reproduced, transmit- ted, or utilized in any form by any electronic, mechanical, or other means, now known or hereafter invented, including photocopying, microfilming, and recording, or in any information storage or retrieval system, without written permission from the publishers. For permission to photocopy or use material electronically from this work, please access www.copyright. com (http://www.copyright.com/) or contact the Copyright Clearance Center, Inc. (CCC), 222 Rosewood Drive, Danvers, MA 01923, 978-750-8400. CCC is a not-for-profit organization that provides licenses and registration for a variety of users. For organizations that have been granted a photocopy license by the CCC, a separate system of payment has been arranged. Trademark Notice: Product or corporate names may be trademarks or registered trademarks, and are used only for identification and explanation without intent to infringe. Visit the Taylor & Francis Web site at http://www.taylorandfrancis.com and the CRC Press Web site at http://www.crcpress.com Contents Preface vii The Editors ix The Contributors xi 1 Introduction 1 Elizabeth A. Baldwin and Robert D. Hagenmaier 2 Protein-based films and coatings 13 Maria B. Pérez-Gago 3 Edible coatings from lipids, waxes, and resins 79 David J. Hall 4 Polysaccharide coatings 103 Robert Soliva-Fortuny, María Alejandra Rojas-Graü, and Olga Martín-Belloso 5 Gas-exchange properties of edible films and coatings 137 Robert D. Hagenmaier 6 Role of edible film and coating additives 157 Roberto de Jesús Avena-Bustillos and Tara H. McHugh 7 Coatings for fresh fruits and vegetables 185 Jinhe Bai and Anne Plotto 8 Coatings for minimally processed fruits and vegetables 243 Sharon Dea, Christian Ghidelli, Maria B. Pérez-Gago, Anne Plotto 9 Applications of edible films and coatings to processed foods 291 Tara H. McHugh and Roberto de Jesús Avena-Bustillos v vi Contents 10 Application of commercial coatings 319 Yanyun Zhao 11 Encapsulation of flavors, nutraceuticals, and antibacterials 333 Stéphane Desobry and Frédéric Debeaufort 12 Overview of pharmaceutical coatings 373 Anthony Palmieri III 13 Regulatory aspects of coatings 383 Guiwen A. Cheng and Elizabeth A. Baldwin Preface Many interesting and exciting developments have occurred since the publication of the first edition in 1994. These developments result from the ever-increasing quality of coatings research and make it timely to prepare this updated and com- pletely revised second edition, designed for the benefit of all involved in buying, selling, regulating, developing, or using coatings to improve the quality and safety of foods. This book is a study of the coatings, films, wraps, and surface treatments used for foods. Specifically, it covers coating ingredients and additives (Chapters 2, 3, 4, and 6), their permeability properties (Chapter 5), coatings for specific applications (Chapters 7, 8, 9, and 12), the technology of coatings (Chapters 10 and 11), and regu- latory aspects (Chapter 13). But, of course, the world of coatings could not be so neatly divided, so some overlap between chapters is inevitable and desirable. For example, in the discussion of a coating made with a certain ingredient, the author might include information on additives used or allowed, how the coating was applied, what foods it is best used for, and so on. Therefore, in researching any topic, it is best to cross-search other chapters. The editors and authors hope that this book will serve as a useful reference for all aspects of the coating field. We expect that the information within will lead to further developments in this field for food and pharmaceutical products that reduce plastic waste, improve applications, lead to greater efficacy, make regulatory deci- sions easier in a global climate, and ultimately, economically maintain quality of food and pharmaceutical products. vii The Editors Elizabeth A. Baldwin is currently research leader and research horticulturist of the U.S. Department of Agriculture, Agricultural Research Service (USDA-ARS), Citrus and Subtropical Products Laboratory in Winter Haven, Florida. Her research interests include postharvest physiology and overall quality of fresh, fresh-cut, and processed fruits and vegetables, with an emphasis on the use of edible coatings and flavor quality of citrus, tomatoes, and tropical/subtropical products. She received a BA in anthropol- ogy from Hunter College, City University of New York; a BS in plant and soil science from Middle Tennessee State University, and a MS and PhD in horticulture from the University of Florida. Robert D. Hagenmaier worked until retirement as a research chemist for USDA- ARS, Citrus and Subtropical Products Laboratory at Winter Haven, Florida. He holds a PhD in physical chemistry from Purdue University. His research interests focused first on coconut food products and later on how the quality of fresh fruit depends on permeability properties of coatings. Jinhe Bai is a food technologist at USDA-ARS, Citrus and Subtropical Products Laboratory at Winter Haven, Florida. He received a BS from Shanxi Agriculture University, China; MS from Northwest Agriculture University, China; and a PhD from Osaka Prefecture University, Japan, on the effects of modified atmosphere (MA) packaging on volatile production of fruits. His current research interests are focused on the development of controlled atmosphere (CA) storage, MA packaging and edible coating technologies, and the discovery of how internal and environmen- tal factors influence metabolism and further impact flavor and nutritional quality of fruits and vegetables. ix