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The Produce Contamination Problem: Causes and Solutions

✍ Scribed by Gerald Sapers, Ethan Solomon, Karl R. Matthews


Publisher
Academic Press
Year
2009
Tongue
English
Leaves
440
Series
Food Science and Technology
Edition
1
Category
Library

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✦ Synopsis


This book is organized into five sections beginning with an introduction in which the problem is described in terms of the number and size of produce related outbreaks, the commodities involved, and the human pathogens involved. The introduction also documents the failure of conventional sanitizing treatments to assure microbiological safety examining the problems of microbial attachment.

The second section reviews methods of identifying a contamination source (epidemiology, trace back, strain identification, location of Source) and then focuses on the various sources of microbial contamination (water, manure, airborne dust, wildlife, human activity) and where in the crop production sequence they might result in contamination.

In the third section, some of the commodities associated with major outbreaks (leafy vegetables, tomatoes, cantaloupes, apples, berries, sprouts) are examined to determine what characteristics make them especially vulnerable to contamination.

The fourth section then addresses means of avoiding produce contamination through use of Good Agricultural Practices and recommendations in FDA and industry guidance documents. Regulatory actions (recalls, restrictions on imports) to safeguard the public from potentially hazardous products are described. Coverage includes policy and practices in the US, Mexico and Central America, Europe and Japan.

The fifth section examines current technologies for reducing human pathogens in fresh produce including disinfection, rapid methods for detecting contaminants, irradiation, gas-phase application and best practices acceptable to organic growers, packers and processors.

                                     *Addresses foodborne contaminations from a prevention view, providing pro-active solutions to the problems *Covers core sources of contamination and methodologies for identifying those sources *Includes best practice and regulatory information

✦ Table of Contents


Cover Page
......Page 1
Copyright......Page 2
Preface......Page 3
Contributors......Page 6
Produce-Associated Outbreaks-a New Problem?......Page 9
Consequences of Produce-Associated Outbreaks......Page 10
Characteristics of Produce-Associated Outbreaks......Page 11
Prevalence of Produce Contamination with Human Pathogens......Page 14
Preharvest Sources......Page 15
Contamination During Packing......Page 16
Contamination During Fresh-Cut Processing......Page 17
What We Don't Know......Page 18
Developing Effective Interventions......Page 19
References......Page 20
Introduction......Page 26
Ecological Niches and Introduction into the Plant Environment......Page 28
Outbreak Investigations Reveal Sources and Persistence of Pathogens......Page 29
Attachment of Pathogens to Plant Tissue......Page 30
Attachment of Escherichia coli O157:H7 to Lettuce......Page 31
Attachment of Salmonella to Tomatoes......Page 33
Bacterial Contamination of Berries......Page 35
Biofilm Formation on Produce Surfaces......Page 36
Internalization......Page 37
Organic Fertilizer......Page 41
References......Page 44
Identification of the Source of Contamination......Page 51
Surveillance and Detection......Page 52
Epidemiologic......Page 53
Computer/AI Optical Scanning......Page 55
Specifics of Environmental Investigations......Page 58
Foodborne Bacteria......Page 63
Regulatory/Enforcement......Page 67
Training Needs for Environmental Investigators of Retail, Food-Processing Facilities, Packing Sheds, and Farms......Page 68
Resuming Operations......Page 69
Farm Investigations......Page 70
Packinghouse Investigations......Page 73
Fresh Cut Produce Processor Investigations......Page 74
Lessons Learned......Page 75
Recommendations......Page 77
References......Page 78
Introduction......Page 80
Manure Use on Crops......Page 83
Bacteria......Page 85
Protozoan and Helminthic Parasites......Page 88
Flooding......Page 90
Pastures, Lots, and Runoff......Page 91
Summary......Page 93
Composting......Page 94
Summary......Page 98
References......Page 99
Introduction......Page 106
Irrigation Water......Page 107
Basic Facts......Page 109
Occurrence of Pathogens in Irrigation Water......Page 110
Contamination of Produce During Irrigation......Page 112
Aqueous Chlorine Dioxide and Acidified Sodium Chlorite......Page 114
References......Page 116
Sapro-Zoonotic Risks Posed by Wild Birds in Agricultural Landscapes......Page 120
Bird Species Commonly Associated with Agriculture......Page 121
Pigeons......Page 122
Outbreaks Associated with Tree Nuts......Page 249
Alternatives to Chlorine......Page 124
Campylobacter......Page 125
Escherichia coli......Page 126
Salmonella......Page 128
Cryptococcus......Page 129
Histoplasma......Page 130
Toxoplasma......Page 131
Mitigation Options......Page 132
Summary......Page 133
References......Page 134
Introduction......Page 144
Bacterial Pathogens......Page 147
Parasitic Pathogens......Page 152
Protozoa......Page 153
Fresh Produce Contamination Problems in Europe......Page 325
Mitigating Wildlife-Crop Interactions......Page 156
References......Page 158
Introduction......Page 163
Outbreaks Associated with Leafy Greens......Page 164
Growing Conditions by Geographical Region: Link to Outbreaks......Page 166
Hepatitis A Outbreaks with Raspberries and Strawberries......Page 167
Handling Prior to Processing......Page 169
Outline of Japan GAP......Page 171
Sanitizing Agents......Page 172
Packaging......Page 173
Other Approved Sanitizing Agents for Produce......Page 175
European Food Safety Authority (EFSA)......Page 176
Outbreak-Related Cases in MΓ©xico and Central America......Page 177
Internalization......Page 178
Conclusions......Page 179
References......Page 180
Melons......Page 186
Commercial Tomato Production and Marketing......Page 187
Characteristics of Outbreaks......Page 188
Contributing Factors......Page 191
Prevention......Page 253
Potential Sources and Mechanisms of Contamination and Measures Recommended to Prevent Contamination......Page 193
Peroxyacetic Acid......Page 194
Worker Activities......Page 195
Animal or Human Feces......Page 196
Facilities and Equipment......Page 197
Water for Washing and Sanitizing......Page 198
Increasing Agricultural and Food Imports......Page 199
Mechanisms for Contamination......Page 200
Preventing and Minimizing Contamination......Page 201
Current Knowledge about Growth and Survival of Pathogens in Melons......Page 203
Cantaloupe Netting......Page 204
Biofilm Formation......Page 205
Use of Antimicrobial Treatments to Decontaminate Melons......Page 206
Chemical Disinfectants......Page 207
Hot Water Treatment......Page 208
Treatment with Antimicrobial Agents......Page 209
Irradiation......Page 210
Conclusions......Page 211
References......Page 292
Introduction......Page 219
History of Viral Contamination of Berries......Page 225
Second Outbreak Traced to South Carolina Tomatoes, 1993......Page 226
Multistate Outbreak of Salmonellosis, 1998......Page 227
Outbreak of S. Newport Linked to Virginia Tomatoes, 2002......Page 228
Multiserotype Convenience Store Outbreak, 2004......Page 229
Second Outbreak of Salmonellosis Caused by Serotype Newport Traced Back to Tomatoes Produced on the Delmarva Peninsula, 2005
......Page 230
Recurrence of Serotype Newport in Delmarva Tomatoes, 2006......Page 231
Outbreak Linked to Ohio Tomatoes, 2006......Page 232
Recommendations for Commercial Tomato Production and Handling, Farm-To-Fork......Page 239
References......Page 240
Introduction......Page 244
Organisms of Concern......Page 245
Fresh Produce-Related Outbreaks in Japan......Page 351
Potential Movement of Fecal Matter During Rainy Season......Page 306
Remediation......Page 254
Conclusions......Page 255
References......Page 256
Introduction......Page 265
The Impact of Major Outbreaks......Page 267
European Fruit and Vegetable Production......Page 271
The Role of Cyclospora cayetanensis in Berry-Associated Outbreaks......Page 273
Cold Plasma......Page 274
Contamination Reduction Strategies......Page 279
Initiatives in Ensuring Produce Safety and Stable Supply......Page 291
Introduction......Page 300
Irrigation Water......Page 303
Tomato Production Practices in MΓ©xico......Page 307
Dealing with GAP in the Private Sector and Producer......Page 356
Prevalence and Incidence of Bacterial, Viral, and Protozoan-Related Gastroenteritis......Page 309
Inefficient Field Toilets and Handwashing Stations......Page 311
Good Agricultural Practices......Page 312
References......Page 317
Regulatory Issues in Europe Regarding Fresh Fruit and Vegetable Safety......Page 321
Introduction......Page 322
The European Union......Page 323
The European Free Trade Association (EFTA) and The European Economic Area (EEA)......Page 324
Foodborne Human Pathogenic Virus......Page 327
Molds and Mycotoxins......Page 328
EU Central Regulations......Page 329
Rapid Alert System for Food and Feed......Page 330
Hygiene and Control Rules......Page 332
GAP and Quality Assurance in Fruit and Vegetable Production......Page 334
Washing Equipment......Page 335
Distribution Route of Fresh Produce......Page 363
Differences from US Regulations......Page 336
Funding of Food-Safety Research in Europe......Page 338
References......Page 339
Regulatory Issues in Japan Regarding Produce Safety......Page 343
Introduction......Page 344
Domestic Fresh Produce Production......Page 347
Good Agricultural Practices (GAP) in Japan......Page 354
Food Labeling......Page 357
Organic Acids......Page 388
Cooperativeness......Page 358
Types of Washers......Page 390
Vegetable Imports and Compliance......Page 364
Scandals and a Major Change of Attitude......Page 366
New Food Safety Policy and Public Standards......Page 367
Implementation of Risk Assessments......Page 368
Other Roles......Page 369
Food Sanitation Law......Page 370
Enforcement of Regulations and Standards in Practice......Page 371
Company Strategies and Company-Specific Quality Standards......Page 374
Traceability......Page 375
Conclusions......Page 376
References......Page 378
Introduction......Page 380
Chlorine......Page 382
Pre-emptive Food Safety Programs......Page 436
Irradiation......Page 420
Efficacy of Combination of Treatments......Page 387
Iodine......Page 389
Efficacy of Commercial Washers......Page 391
Produce Washes for Food Service and Home Use......Page 392
Leafy Vegetables......Page 394
Tomatoes......Page 396
Cantaloupe......Page 397
Apples......Page 399
References......Page 401
Introduction......Page 412
Detection Methods......Page 413
Immunomagnetic Beads and Biosensors: Separation and Concentration......Page 414
PCR-Based Methods......Page 415
Antimicrobial Intervention Technologies......Page 417
Pulsed Light......Page 421
Sonication......Page 423
Biological Controls......Page 424
The Challenge of Technology Development for Organic Foods......Page 425
References......Page 426
Introduction......Page 431
Sources of Contamination......Page 432
Commodities at Risk......Page 433
Investigating Contamination on the Farm......Page 435
The Farm-to-Fork Approach......Page 437
Food Science and Technology International Series......Page 438


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