G

Gas chromatography (GC), 284 Gas/vapor-phase sanitation. See also Washing acetic acid, 424-425 allyl isothiocyanate, 422-423 chlorine dioxide antimicrobial properties of aqueous and, 404 effects on quality of produce, 414 efficacy in reducing microorganisms, 412-413

factors influencing treatment by, 409-412 generation, 404-407 mechanisms for microbial inactivation by, 409

physical, chemical, and safety properties of, 402-404 general gas/vapor treatment systems for,

407-408 history of, 40

natural plant volatiles in, 425 ozone effects on quality of produce, 421 efficacy in reducing microorganisms, 418-421

factors influencing sanitation treatment by, 417-418 generation, 415-416 mechanisms for microbial inactivation by, 417

potential applications of, 415 properties of, 414-415 treatment systems, 416-417 present and future applications of, 426-427 regulatory considerations, 427-428 Gene expression, bacterial, 608-612 Generally regarded as safe (GRAS) materials, 443, 444

Genetic regulation of acid resistance,

325-327 Genetic testing, 583-588 GFP, 596-597

fluorescence and cell viability, 607 as a reporter of gene expression, 608-611 Giardia, 415, 505

Good agricultural practices (GAPs), 6, 22-23,

343, 366-367, 376 Good manufacturing practices (GMPs), 23-24, 201, 212, 236, 343, 376 for juice, 219-221 Grade standards, 366 Growth cracks in plant surfaces, 86 Guide to Minimize Microbial Food Safety Hazards for Fresh Fruits and Vegetables, 22, 366, 370-371

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