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Food Contact Materials Analysis

Food Contact Materials Analysis

Michele Suman

(2019)

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Book Details

Abstract

Mass spectrometric techniques have developed over recent years to offer ever increasing solutions to solving problems in food processing and packaging. Even the smallest amount of contamination in food can cause a problem for food production companies, thus they are keen to find speedy and efficient quality control methods.

This book outlines how ingredients and their interrelationship with processing and packaging have developed with the exploitation of mass spectrometry and gives practical protocols to stake holders showing the flexibility of this technique.

With huge relevance worldwide, this book will appeal to food packaging scientists and mass spectrometry practitioners alike.


Table of Contents

Section Title Page Action Price
Cover Cover
Food Contact Materials Analysis: Mass Spectrometry Techniques i
Preface v
Contents ix
Chapter 1 - Risk Assessment of Plastic-based Food Contact Materials: Focus on Polyolefins 1
1.1 Introduction 1
1.2 Evaluation of Analytical Approaches 2
1.3 GPC: First Approach 4
1.4 GC-MS and HPLC-MS Approaches 5
1.5 Samples 7
1.6 Characterization: SHS 7
1.7 Characterization: TDS (Thermal Desorption System) 14
1.8 Characterization: Solvent Extraction 20
1.8.1 NIASs (Other than Hydrocarbons) and IASs with SMLs 20
1.8.2 POHs and MOHs 25
1.9 Conclusion 30
Abbreviations 30
Acknowledgements 31
References 32
Chapter 2 - Food Contact Paper and Paperboard: Examples of Gas and Liquid Chromatography Determinations 35
2.1 Introduction 35
2.1.1 Use of Mass Spectrometry Techniques for Conformity Requirements: GC-MS and LC-MS 36
2.2 Mass Spectrometry for Non-target Determinations 41
References 47
Chapter 3 - Additives, Inks and Other Migrant Substances in Food Contact Materials 48
3.1 Introduction to Food Contact Materials 48
3.2 Additives 49
3.2.1 Types of Additives 50
3.2.1.1 Antioxidants 50
3.2.1.2 Plasticizers 50
3.2.1.3 Nucleating Agents/Fillers 50
3.2.1.4 UV Absorbers 51
3.2.1.5 Lubricants 51
3.2.1.6 Antimicrobials 51
3.2.1.7 Optical Brighteners 51
3.2.1.8 Other Types of Additives Commonly Used in FCMs 51
3.2.1.9 Printing Inks: Photoinitiators 52
3.3 Non-intentionally Added Substances (NIASs) 52
3.4 Migration from FCMs into Food or Simulants 53
3.5 Legislation on FCMs 54
3.6 Analysis of Potential Migrants 54
3.6.1 Selection of Model Substances 54
3.6.2 Sample Preparation 59
3.6.2.1 Extraction: Selecting Appropriate Solvents 59
3.6.2.1.1\rExtraction from FCMs.Several authors have used acetonitrile or methanol to extract a wide variety of chemicals from different FC... 60
3.6.2.1.2\rExtraction from Food Simulants.Usually food simulants are relatively easy to analyze, since some of them can be injected directl... 61
3.6.2.1.3\rExtraction from Food.Analysis of food is usually tedious, complicated and expensive, as there are multiple complex matrices that... 61
3.6.2.2 QuEChERS 61
3.6.2.3 Cleanup and Concentration of the Sample 62
3.6.2.4 Filtration 62
3.6.3 Mass Spectrometry for Determination and Identification of Migrants 62
3.6.3.1 GC-MS 63
3.6.3.2 LC-MS 66
3.6.3.3 Multi-method Analyses Using Both LC-MS and GC-MS 68
3.6.3.4 Inductively Coupled Plasma Mass Spectrometry (ICP-MS) 70
3.6.3.5 High-resolution Mass Spectrometry (HRMS) 70
3.6.3.5.1\rApplication of HRMS to the Analysis of Target Substances.As with the original MS systems, HRMS can be paired with LC for target ... 72
3.6.3.6 Application of MS to the Analysis and Identification of Unknowns 72
3.6.3.6.1\rIdentification of Volatile and Semivolatile Compounds.As described previously, GC-MS a suitable analytical technique for volatil... 73
3.6.3.6.2\rIdentification of Non-volatile and Semivolatile Compounds.Identifying non-volatile and semivolatile substances is appropriately ... 74
3.6.3.7 Direct Analysis in Real Time (DART-HRMS) 74
3.7 Conclusion 75
Acknowledgements 75
References 75
Chapter 4 - Adhesives in Food Packaging 82
4.1 Introduction 82
4.2 Mass Spectrometry Techniques Used for the Analysis of Food Packaging Adhesives 84
4.3 Migration Studies of Adhesive Components 85
4.3.1 Volatile and Semivolatile Compounds from Adhesives 85
4.3.1.1 Volatile and Semivolatile Compounds from Polyurethane Adhesives 86
4.3.1.2 Volatile and Semivolatile Compounds from Acrylic Adhesives 89
4.3.1.3 Volatile and Semivolatile Compounds from Hotmelt Adhesives 91
4.3.2 Non-volatile Compounds from Adhesives 93
4.3.2.1 Non-volatile Compounds from Polyurethane Adhesives 93
4.3.2.2 Non-volatile Compounds from Acrylic Adhesives 95
4.3.2.3 Non-volatile Compounds from Hotmelt Adhesives 99
4.3.2.4 Non-volatile Compounds from Other Types of Adhesives 100
4.4 Mass Spectrometry in Delamination Studies 101
4.5 Conclusions and Trends 102
References 103
Chapter 5 - Volatile Compounds Through and from Packaging 105
5.1 Introduction 105
5.1.1 Volatile Organic Compounds 105
5.1.2 Modelling Substance Migration in Food Contact Materials 106
5.1.3 Target Volatiles 108
5.1.4 Analytical Instrumentation 108
5.1.4.1 Gas Chromatography 109
5.1.4.2 Mass Spectrometry 110
5.2 Analysis of Volatile Constituents of Food Contact Materials 112
5.2.1 Establishing Initial Conditions 112
5.2.2 Headspace Sampling 112
5.2.2.1 Static Headspace 112
5.2.2.2 Dynamic Headspace 113
5.2.2.3 Purge-and-trap 113
5.2.3 Gas-phase Extraction Techniques 113
5.2.3.1 Solid-phase Microextraction 113
5.2.3.2 Stir-bar Sorptive Extraction 114
5.2.3.3 Thermal Desorption 114
5.2.4 Liquid-phase Extraction Techniques 116
5.2.4.1 Static Extraction and Sonication 116
5.2.4.2 Soxhlet Extraction 116
5.2.4.3 Accelerated Solvent Extraction 116
5.2.4.4 Solvent-assisted Flavour Evaporation 117
5.2.4.5 Liquid–Liquid Extraction 117
5.2.5 Sample Cleanup 118
5.2.5.1 Size-exclusion Chromatography 118
5.2.5.2 Solid-phase Extraction 118
5.3 Analysis of Volatile Substance Migration into FCMs 118
5.3.1 Specific Migration Limits 118
5.3.2 Examples of Migration Tests for Specific Targets and Matrices 120
5.4 Analysis of Permeation Through FCMs 128
5.4.1 Permeation Parameters 128
5.4.2 Migration Tests for Barrier Properties 130
5.4.3 Permeation Tests with Static or Dynamic Acceptor 130
5.4.4 Lag-time Experiments 131
5.4.5 Analysis of Odour-active Compounds in FCMs 132
5.4.6 Screening Approaches for Volatiles in FCMs 133
5.5 Ambient Desorption and Direct Injection Mass Spectrometry Techniques 135
5.5.1 Direct Analytical Techniques 135
5.5.2 Ambient Desorption 135
5.5.3 Direct Injection Mass Spectrometry 135
References 136
Chapter 6 - Migration and Sensory Changes in Packaged Food Products 139
6.1 Introduction 139
6.2 Sensory Properties of Food and Beverages 140
6.3 Changes of Sensory Properties 143
6.3.1 Changes of Colour due to Mass Transfer 144
6.3.2 Changes of Odour and Flavour due to Mass Transfer 146
6.4 Food Packaging Materials 148
6.4.1 Metal Packaging Materials 148
6.4.2 Ceramic Packaging Materials 148
6.4.3 Cellulosic Packaging Materials 149
6.4.4 Plastic Packaging Materials 149
6.5 Migration Phenomena 151
6.5.1 Migration Models 152
6.5.2 Phenomenal Description of Migration 153
6.5.2.1 Negative Migration – Flavour Scalping 153
6.5.2.2 Positive Migration Modalities 154
6.6 Evidence-based Assessment 155
6.6.1 Instrumental Evaluation 156
6.6.2 Sensory Analysis 158
6.7 Conclusion 160
References 160
Chapter 7 - Risk Assessment of Plastic Packaging for Food Applications 163
7.1 Introduction 163
7.2 Migration 164
7.3 Multilayer Packaging 165
7.4 Oxo-biodegradable Packaging 166
7.5 Packaging from Recycled Polymers 167
7.5.1 Printing Inks 168
7.5.2 Non-intentionally Added Substances 170
7.5.3 Oligomers 172
7.6 Active Packaging 172
7.7 Packaging with Nanomaterials 175
7.8 Legislation 176
7.9 Risk Assessment 177
7.10 Analytical Methods 178
7.10.1 Methods for Direct Analysis of the Polymer Surface 178
7.10.2 Methods Including a Preconcentration Step 178
7.10.3 Methods for the Analysis of Volatile Compounds 180
7.10.4 Methods for the Analysis of Non-volatile Compounds 180
7.10.5 Methods for the Analysis of Nanoparticles 184
References 185
Chapter 8 - Non-target/High-resolution Mass Spectrometric Strategies Combined with Proper Data Handling and Software Elaboration Applied to Food Contact Materials Issues 192
8.1 Introduction 192
8.2 Analysis and Identification 193
8.2.1 Data Acquisition Mode 194
8.2.2 Data Processing in Non-target Screening 211
8.2.2.1 Data Reduction Strategies for HRAMS-acquired Data 212
8.2.2.2 Identification of Prioritized Chemicals 214
8.3 Risk Assessment of NIASs 216
8.3.1 The Threshold of Toxicological Concern (TTC) Approach. Cramer Rules 216
8.4 Conclusion 220
Acknowledgements 221
References 221
Chapter 9 - Migration of Nanomaterials from Food Contact Materials 226
9.1 Introduction 226
9.2 Release of Nanomaterials from Food Contact Materials 228
9.3 Analytical Challenges of Migration Testing 235
9.4 Conclusion and Outlook 239
References 240
Chapter 10 - Solutions Commonly Applied in Industry and Outsourced to Expert Laboratories 245
10.1 Introduction 245
10.2 Consultancy 247
10.2.1 Defining the Analytical Procedure 247
10.2.1.1 Extraction of Food Contact Materials 247
10.2.1.2 Migration of Food Contact Materials 248
10.2.1.3 Determination in Food 248
10.2.2 Legal Background 249
10.2.2.1 Defining Simulants 249
10.2.2.2 Defining Time/Temperature Conditions 250
10.3 Sample Preparation/Sample Handling 250
10.3.1 Avoiding Contamination 250
10.3.2 Samples in the Laboratory 250
10.4 Selection of Analytical Method 253
10.4.1 Target versus Non-targeted Analysis 254
10.4.1.1 Target Analysis 254
10.4.1.2 Non-target Analysis 254
10.4.2 Selection of Mass Spectrometric Detector 255
10.4.2.1 Unit-resolution MS 255
10.4.2.2 High-resolution MS 256
10.4.2.3 GC-MS Example 256
10.4.2.4 LC-MS Examples 257
10.5 Performing Analytical Tests 258
10.6 Assessment of Results 260
10.6.1 Single/Multiple Analytes 260
10.6.2 Oligomers 262
10.6.2.1 Structure of Known Oligomers Including Standards 262
10.6.2.2 Structure of Known Oligomers Without Standards for Each Oligomer 262
10.6.2.3 Structure of Known Oligomers With No Standards Available 262
10.6.2.4 Structure of Unknown Oligomers and No Standards Available 265
10.7 Future of Food Contact Material Analysis 266
References 267
Subject Index 269