Table of Contents
Cover
Title Page
Preface
List of Acronyms and Abbreviations
1 Food Forensics: Introduction
Reference
2 Food Provenance and Food Fingerprinting: Authentication and Traceability of Foods and Food Products
Introduction
Food Fraudulence and Adulteration
Scientific Methods and Strategies for Verification of Food Fraudulence Cases
Scientific Verification of Geographical Indications and Designation of Origin of Foods
Processes, Steps and Procedures to Distinguish the Geographical Origin of Foods
Geographical Identification, Quality Verification and Authentication of the Origin for Fruit Nectars, Fruit Juices, Vegetable Juices, and Non‐alcoholic Beverages
Stable Isotope Ratio Analysis (SIRA) of Sugars in Fruit Juices and Fruit Nectars: Isotope Signature
Stable Isotope Ratio Analysis (SIRA) and Multi‐element Stable Isotope Analysis Techniques
Multi‐element Pattern Analysis: Targeted Analysis Methods for Food Provenance: Examples for Honey, Fish, and Meat Products
Non‐targeted Metabolomic Methods for the Determination of Maturation, Expiry, and Shelf Life of Meat Products
Methods for Dairy Products Authentication
Advanced Spectroscopic Methods: Vibrational Spectroscopy
Sampling Approaches for Vibrational Spectroscopy Techniques
Phenols, Polyphenols and Phenolic Flavonoids
Organic Acids in Fruit Juice and Fruit Nectar as Indicators for Geographical Origin
Authentication of Alcoholic Beverages
Chemometric Tools and Methods for Food Authentication and Fingerprinting
Conclusions
References
3 Food Forensics Cases Related to Food Allergenomic Sabotage and Food Intolerance: Allergens and Allergenicity of Processed Foods
Food Allergy and Food Intolerance, What is the Difference?
Labeling of Foods that Contain Allergens
Diagnosis of Food Allergy Reactions
Detection of Allergenic Species in Foods
Proteomics Based Methods for Food Allergens
Immunochemical Identification and Detection Methods for Food Allergens
Molecular Biology Based Methods for the Determination of Food Allergens
Determination of Food Allergens Using Chromatography and Mass Spectrometry Based Methods
Conclusion
References
4 Food Forensics Cases Related to Food Bioterrorism/Food Bio‐Weapons and Food Poisoning Agents: Agrochemical Food Poisoning Agents
Introduction
Chemical Food Poisoning Agents: Agrochemicals in Foods
Sampling of Target Specimens
Agrochemical Poisoning Metabolite Indicators and Markers: Indicator Molecules and Markers Found in Urine Samples After Poisoning
Analysis of Agrochemical Residues and their Metabolites in Biologic Samples in Individuals Affected by Food Poisoning
Biomarkers in Agrochemical Poisoning
Organophosphate and Carbamate Agrochemicals: Mode of Action, Toxicity, Metabolism, and Biomarkers
Organophosphate Agrochemicals: Parathion and Methyl Parathion
Organophosphate Agrochemicals: Pirimiphos‐methyl
Organophosphate Agrochemicals: Diazinon
Organophosphate Agrochemicals: Dichlorvos
Organophosphate Agrochemicals: Coumaphos
Organophosphate Agrochemicals: Chlorpyrifos
Organophosphate Agrochemicals: Chlorpyrifos‐methyl
Organophosphate Agrochemicals: Azinphos‐ethyl
Organosphosphate Agrochemicals: Azinphos‐methyl
Carbamate Agrochemicals: Mode of Action, Toxicity, and Metabolism
The Biotransformation of Carbamate Agrochemicals
Poisoning Biomarkers/Indicator Compounds, Metabolites, and Monitoring Matrices
Organohalogen Agrochemicals Poisoning: Indicator Compounds and Monitoring Biomatrices
Metabolism of Organohalogen Agrochemicals and their Respective Metabolites
Pyrethroid Agrochemicals
Herbicides Poisoning
Detection Methods for Food Forensic Specimens Suspected of Contamination with Agrochemical Molecules and/or their Metabolites in Various Biomatrices
Analytical Methods of Organophosphate Agrochemicals and their Residues in Human Urine Specimens
Analytical Methods of Organophosphate Agrochemicals and their Residues in Human Serum Specimens
Analytical Methods of Organophosphate Agrochemicals and their Residues in other Biomatrices Specimens
Analytical Methods of Organochlorine Agrochemicals and their Residues in Human‐related Biomatrices
Analytical Methods of Organochlorine Agrochemicals and their Residues in Human Milk Specimens
Analytical Methods of Organochlorine Agrochemicals and their Residues in Human Serum Specimens
Analytical Methods of Organochlorine Agrochemicals and their Residues in Meconium Specimens
Analytical Methods of Multiresidue Analysis of Miscellaneous Agrochemicals and their Metabolites in Various Biomatrices
Conclusions
References
5 Food Forensics Cases Related to Food Bioterrorism/Food Bio‐Weapons and Food Poisoning Agents: Biological Food Poisoning Agents
Major Groups of Biological Agents with Potential for Being Used in Food Poisoning/Bioterrorism
The Chemistry of Cereulide Emetic Toxin: Biosynthetic Pathways and Mode of Action
Clostridium botulinum
and its Toxic Metabolites (Botulinum Toxins) in Foods
Clostridium perfringens
and
C. perfringens
Toxins in Food Forensics
Mechanism of Action of Beta Toxins
Epsilon Toxin (ETV) and Food Forensics
The Chemistry and Mode of Action of Iota Toxin (ITX) and Food Forensics
Clostridium perfringens
Beta 2 Toxin (CPB2): Chemistry and Mode of Action
Clostridium perfringens
Enterotoxin (CPE): Chemistry and Mode of Action
Staphylococcus Aureus
Staphylococcal Food Poisoning (SFP) and Food Forensics
The Chemistry, Mode of Section, and Genetics of SE and SEls Toxins
Gram‐negative Bacteria and Lipopolysaccharide Endotoxins in Food Forensics
Vibrio Parahaemolyticus
in Food Forensics
Salmonella Bacilli and Typhoid/Parathyphoid Toxins in Food Forensics
Campylobacter Species (
C. jejuni
and
C. coli
) and Food Forensics
Campylobacter
Species, Cytolethal Distending Toxin (CDT) in Food Forensics: Chemistry, Genetics, and Mode of Action
Algae/Cyanobacterial Toxins in Drinking Water and Food Forensics
Fungi Derived Mycotoxins and Food Forensics
Plant Derived Phytotoxins and Food Forensics
Analysis and Detection Methods for Protein Based Biotoxins in Food Poisoning Cases
Classification of Food Poisoning Agents
Conclusions
References
6 Food Forensics Cases Related to Food Bioterrorism Poisoning using Pathogenic Viruses
Pathogenic Influenza Viruses and Food Forensics
Avian Influenza Viruses and their Potential Application in Food Bioterrorism
The Genetics of Influenza Virus Type A
Avian Influenza A Viruses that Infect Animals, Wild Birds, Poultry and Humans
Mechanism of Action of Avian Influenza Viruses in Bird‐to‐Human Transmission, Pathogenesis and Host Restrictions of Interspecies Transmission
Analytical Strategy for the Identification of Influenza Virus A Infection Cases
Conclusions
References
7 Food Forensics Cases Related to Genetically Modified Organisms (GMO) Foods
Introduction
The Process of GMO Production
Sampling and Sample Preparation for GMO Analysis
Reference Materials in GMO Analysis and Results Validation
Detection and Identification of GMOs in Food Forensics
Protein‐based Methods for GMO Analysis: Immunoassay Techniques
Protein Immunoblots (Western Blot Assay) Techniques
Immunoassay Methods for GMOs in Food Forensics
Enzyme Linked Immunosorbent Assays (ELISA)/Enzyme Immune Assay (EIA)/Ligand Binding Assays
Molecular Biology PCR‐based Methods
Qualitative PCR Methods for GMO Analyses
Quantitative End‐point Pcr Methods for Gmo Analyses
Quantitative Competitive Pcr Methods in Gmo Analyses
Quantitative Real‐time Pcr in Gmo Analyses
Exhaustive Limiting Dilution Pcr Method in Gmo Analyses
Dna‐based Methods for Gmo Analyses
Sample Preparation Methods for DNA‐based Techniques in GMO Analyses
Dna Isolation Methods in Gmo Analyses
Southern Blot for DNA Detection of GMO Samples
Data Analysis and Interpretation
Other Non‐molecular Biology‐based Methods for Gmo Analyses
Conclusions
References
8 Food Forensics Cases Related to Poisoning of Food and Water using Radionuclides
Radionuclides of Concern in Food Poisoning
Food Products of Concern in Radionuclide Contamination
Types of Radionuclide Particles/Radiation
Analytical Protocol for Radionuclides in Foods and Biological Sample Specimens
Radiochemical Separations
Analytical Strategy for Measurement of Radionuclides in Foods and Biological Specimens
Measurement and Identification of Alpha Emitters in Foods and Biological Specimens
Measurement and Identification of Beta Emitters in Foods and Biological Specimens
Measurement and Identification of Gamma/X‐ray Emitters in Foods and Biological Specimens
Conclusion
References
9 Food Forensics Cases Related to Nano and Novel/Intelligent Foods, Feeds and Agroproducts
Introduction
Nanotechnology Derived Food Ingredients and the Role of Nanotechnology in the Pioneering of New Functional Food Ingredients
Manufacture of Nanomaterials for Application in the Food Industry to Create Nanofoods
Classes of Nanomaterials and Nanostructures Used in Foods/Feed/Agroproducts
Food Grade Novel Edible Coatings and Edible Nanolaminate Films
Food‐grade Nano/Microemulsions as Functional Nanostructures for Foods
Nanotechnology for the Enhancement of Food Color
Nano‐liposomes/Liposomes Functional Nanostructures in Foods
Nanoscale Nutraceuticals
Nanoparticles for Application as Food Additives, Food Supplements and in Water Purification
Encapsulation in Delivery of Functional Food Ingredients
Association Colloids Based Delivery System for Functional Food Ingredients
Nanoemulsions Based Delivery System for Functional Food Ingredients
Nanostructured Multiple Emulsions Based Delivery System for Functional Food Ingredients
Nanotechnology for Active and Intelligent Food Contact Materials
Food Grade Biopolymeric Nanoparticles in Food Packaging
Classification of Biopolymers with Application in Food Packaging
Nanophase/fillers – Bio‐nanopolymers Blends for Use as Food Packaging
Classification of Nanofillers for Food Packaging
Nanosensors in Foods
Nanoparticles/Nanofillers for use in Bioencapsulation Materials in Functional Food Delivery Systems
Solid Lipid Nanoparticles in Bioencapsulation Materials for Functional Food Delivery Systems
Nanofibers and their Multi‐applications in Foods
Generation of Food‐grade Polymeric Nanocomposites for Application in Food Contact Materials
Criteria for Establishment of Risk Assessment for Nanofoods
Potential Risks of Nanofood and Nanofood Regulations Concerning the Safety of Nanofoods
Regulation Regimes for use of Nanoscaled Materials Foods
Analysis and Characterization of Nanomaterials in Food Materials
Electron Microscopy Based Methods for the Characterization of Nanomaterials in Foods
Sampling for Electron Microscopy Analysis and Characterization of Nanomaterials in Food
Sample Preparation for Electron Microscopy Analysis and Characterization of Nanomaterials in Food
Scanning Electron Microscopy (SEM) Analysis of Foods
Transmission Electron Microscopy (TEM) Analysis of Foods
Field Flow Fractionation (FFF) Techniques in Nanofood and Food Macromolecule Analyses
Hydrodynamic Chromatography for Sizing and Quantifying Nanofoods/Nanomaterials in Foods
Analysis and Characterization of Nanofood Structure, Food Nanomaterials and Food Macromolecules Using Small‐angle X‐ray Scattering (SAXS)
Application of Neutron Scattering Techniques in the Analysis and Characterization of Nanofoods and Nanomaterials in Foods
Conclusions
References
10 Food Forensics Cases Related to Application of Food Additives and Food Improvement Agents
Introduction
Methods and Techniques for the Identification and Authenticity Verification of Food Additives
Analysis of Food Coloring Agents
Analysis of Preservatives Used for Foodstuffs
Conclusions
References
11 Application of Molecular Biology Techniques in Food Forensics
Introduction
Molecular Biology Techniques in Food Forensics
Sampling
Molecular Methods for Genetic Materials Extraction
Sample Preparation Methods Suitable for Molecular Biology Techniques
Sample Preparation Methods
Molecular Markers in Food Forensics
General PCR Procedure
Genome Segmentation and Identification/Typing Methods: Molecular Techniques
Amplified Fragment Length Polymorphism (AFLP)‐PCR Methods in Food Forensics
Gel Electrophoresis Separation of Biomolecules and PCR Products
Slab Electrophoresis: (Gel Electrophoresis) – Polyacrylamide (PA) and Agarose
Capillary Electrophoresis (CE)
Separation of Biomolecules Using Non‐electrophoresis Techniques
Application of AFLP‐PCR in Food Forensics
Genotypic Detection and Identification Methods: AFLP‐PCR
Identification of Toxigenic Strains in Animal Carcasses and Varieties in Plant Crops
PCR: Random Amplified Polymorphic DNA (RAPD)
RAPD Principle
Microsatellite Techniques
Inter‐sequence Simple Repeat (ISSR)‐PCR
Genome Fingerprinting by Simple Sequence Repeat (SSR)‐anchored Polymerase Chain Reaction Amplification
Forensically Informative Nucleotide Sequencing (FINS)/DNA/PCR Sequencing/Barcoding
Conclusions
12 Application of Atomic and Molecular Spectroscopic Techniques in Food Forensics
Introduction
Atomic Absorption Spectrometry (AAS)
Atomic Emission Spectrometry: Inductively Coupled Plasma Techniques
Applications of Ion Chromatoraphy and Atomic Spectrometry in Food Forensics
The Relationship Between Mineral Composition in Foods, Fruit Bearing Plants, Flowers, Vegetables/Vegetable Derived Products, and Soil Structure
Atomic Spectrometry (AAS, ICP‐OES, ICP‐MS)
Sample Preparation for Elemental Composition Analysis in Foods
Ultraviolet‐visible (UV‐Vis) Spectroscopic Methods for Food Forensics
Application of Molecular Spectroscopy Methods in Food Forensics: Fluorescence Spectroscopy
Fluorescence Coupled Techniques for Application in Food Forensics
Proton (
1
H)
13
NMR and C NMR Spectroscopy for Food Fingerprinting and Food Provenance
Application of
19
F in Food Forensics
Phosphorus NMR and the Application of
31
P NMR Spectroscopy in Food Forensics
Assignment of Chemical Shifts for Food Components in
31
P NMR
Application of
31
P NMR in Plant Based Food Samples
13
P NMR for Foods of Animal Origin
Application of
31
P NMR for Seafood Forensics
Application of
31
P NMR for Food Additives Forensics
Nitrogen NMR in Food Forensics
14
N and
15
N NMR Techniques in Food Forensics
Multidimensional NMR Techniques
Application of Vibrational Spectroscopy in Food Forensics
Monitoring of Foods in which Processing has Altered the Composition by Vibrational Spectroscopic Techniques
Application of Mid‐infrared Spectroscopy
Mid‐infrared and Chemometric Methods
Application of Near Infrared in Food Forensics
THz‐based Techniques for Food Forensics
Food Forensics Application of Microwave Rotational Radiation
Different Microwave Techniques for Food Forensics
Food Forensics Application of Multi‐dimensional Raman Spectroscopic Pattern Signatures
Conclusions
References
13 Application of Microscopy Techniques in Food Forensics
Forensic Food Microscopy Methods
Light Microscopy Techniques
Types of Light Microscopy Techniques for Food Forensics
Electron Energy Loss Spectrometry (EELS) and Electron Spectroscopic Imaging (ESI)
Other Microscopy and Imaging Techniques in Food Forensics
Potential Application of AFM in Nanofood Simulation, Optimization and Characterization
Scanning Tunneling Microscopy (STM)
Other Scanning Probe Microscopy Techniques
Conclusions
References
14 Application of Ionizing Radiations (X‐rays/γ‐Rays) Techniques in Food Forensics
X‐ray Techniques in Food Forensics
X‐ray Techniques for Food Forensics
Ionizing Radiation in Food Preservation
X‐ray‐(Micro) Computed Tomography (CT)
X‐ray Photoelectron Spectroscopy and its Potential Application to Food Forensics
X‐ray Diffraction (XRD)
X‐ray Fluorescence Techniques for Food Forensics
Total Reflection X‐ray Fluorescence (TXRF)
Summing‐up X‐ray Applications in Food Forensics
Application of Gamma Rays in Food Forensics: Radionuclide Food Poisoning
Sampling, Storage and Sample Preparation Methods for Food Specimens Suspected of Radionuclide Contamination
Packaging Before Analysis
Sample Preparation Methods for Radionuclides in Foods
Detection Techniques for Radionuclides in Foods
Detection of Radionuclides in Foods
Conclusions
References
15 Application of Chromatographic Techniques in Food Forensics
Introduction
Chromatography and Food Forensics
High Performance Liquid Chromatography (HPLC) and Food Forensics
Mobile Phases in HPLC
Stationary Phases for Separation of Analytes (HPLC Columns)
Ion Exchange Chromatography (IEC) Interactions
Types of Stationary Phases Used in Ion Exchange Stationary (IEC)
Affinity Chromatography (AC) Interactions
Size Exclusion Chromatography (SEC)
Gas Chromatography (GC) for Food Forensics
GC Derivatization Strategies for Food Forensics
GC Pyrolysis for Food Forensics: Analysis and Identification of Polymeric Components of Food Wrappings and Food Packaging
Stable Isotope Ratio Mass Spectrometry (IRMS) for Food Forensics
Conclusions
References
16 Application of Hyphenated Techniques in Food Forensics
Chromatography – Mass Spectrometry Hyphenated Techniques for Food Forensics
GC‐MS for Food Forensics
Compound Specific Isotope Analysis (CSIA) and On‐line Combustion Gas Chromatography Coupled to Stable Isotope Ratio Mass Spectrometry (GC‐C‐IRMS) for Food Forensics
Sample Preparation, Derivatization and Isotopic Calibration for CSIA‐GC‐C‐IRMS in Food Forensics
CSIA‐GC‐C‐IRMS for Adulteration Tests, Authenticity and Adulteration of Foods
Ion Chromatography (IC) and Atomic Spectrometry Methods in Food Forensics: Verification of Food Authenticity, Adulteration, Provenance and Isotopic Fingerprinting of Foods
Conclusions
References
17 Application of Electromigration Driven Techniques in Food Forensics
Indicative‐species Targeted in Electromigration Methods:
Capillary Electrophoresis and Food Authenticity in Forensics
Free Solution Capillary Electrophoresis (FSCE) and Food Forensics
Micellar Electrokinetic Chromatography (MEKC)
Considerations During the Application of Electromigration Techniques in Food Forensics
Hyphenated Techniques Involving Capillary Electrophoresis
Conclusions
References
18 Application of Thermal Methods in Food Forensics
Introduction
The Relationship Between Temperature and Food Properties
Application of Thermal Gravimetric Analysis Techniques in Food Forensics
Moisture Content and Water of Crystallization of Foods Using Thermogravimetry: Measure of Food Authenticity, Quality Control and Quality Assurance
Sampling and Sample Preparation Methods in the Analysis of Moisture/Water Content in Foods
Modern Instrumental Methods and Techniques for the Analysis of Moisture Content in Foods
Considerations Needed to be Taken into Account During Data Interpretation from TGA Curves
Protein Identification/Authentication and Species Differentiation Using Differential Scanning Calorimetric (DSC) Methods
Application of DSC in the Analysis of Protein Thermal Stability
Factors that Affect Thermodynamic Stability Properties of Proteins
Differential Thermal Analysis (DTA) and Food Forensics
Isothermal Titration Calorimetry (ITC) Application in Food Forensics
Thermogravimetry and Cooking/Edible Oil Fingerprinting
Thermogravimetry and Food Packaging and Food Contact Substances Authenticity and Compliance
Biodegradable Biopolymers Used in Food Packaging and Food Contact Substances
Conclusions
References
19 Application of Electrochemical Methods and Biosensors in Food Forensics
Introduction
Biosensors for Food Analysis
Electrochemical Biosensors in Food Analyses
Conclusions
References
20 Application of Flow Cytometry in Food Forensics
Introduction
Conclusions
References
21 Application of Multivariate Statistical Analysis/Chemometrics in Food Forensics
Introduction
Procedures for Sample Selection Prior to Chemometrics Data Analysis
Targeted Metabolic Profiling Prior to Statistical Data Treatment
The Analysis of Variance (ANOVA)
Multivariate Statistical Analysis Techniques (Pattern‐recognition Methods) in Food Forensic Samples
Principal Component Analysis (PCA) as a Variable‐reduction Technique
Multivariate Qualitative Methods
Supervised Pattern Recognition (Discriminant Analysis) Methods
Partial Least Squares (PLS) Regression Multivariate Calibration and Prediction Method
Linear Discriminant Analysis (LDA)
Discriminant Analysis (DA)
Stepwise Discriminant Analysis (SDA)
Partial Least Squares Discriminant Analysis (PLS‐DA)
k‐Nearest Neighbors Algorithm (
k
‐NN)
Soft Independent Modeling of Class Analogies (SIMCA)
Decision Trees: Classification and Regression Trees (CART)
Artificial Neural Network (ANN)
Non‐supervised Pattern Recognition Methods (Exploratory Methods)
The Hierarchical Cluster Analysis (HCA)
The Principal Component (PCA) Cluster Analysis
Multivariate Calibration for Quantitative Analysis
Validation Approaches for Chemometric Pattern Recognition Models
Factors that Govern a Proper Choice of Statistical Technique in Food Forensic Samples
Conclusions
References
22 Conclusions and Future Trends
Index
End User License Agreement
List of Tables
Chapter 02
Table 2.1a Major natural organic acids found in fruits.
Table 2.1b Major natural organic acids found in vegetables.
Table 2.2 Essential amino acid profiles in fruits.
Chapter 03
Table 3.1 Food ingredients and food allergy or food intolerance.
Chapter 05
Table 5.1 Biological and chemical properties of toxins produced by
C. perfringens
(Sakurai, 1995 ; Sakurai and Duncan, 1978).
Chapter 11
Table 11.1 Preparation of solutions and buffers for molecular analysis (Nishiguchi
et al
., 2002).
Table 11.2 Sample preparation methods for the molecular forensic analysis of freshwater and marine animal food products (Taggart
et al
., 1992).
Table 11.3 Nucleic acid extraction methods and the target specimens for food forensic molecular analyses.
Chapter 12
Table 12.1 ½ Spin nuclei (Harris, 1983).
Table 12.2
19
F NMR reference standards.
Table 12.3 Fluorine chemical shifts in various solvents (Gerig, 2001).
Table 12.4 Approximate chemical shift values for nitrogen isotopic nuclei as found in different types of chemical environments when CH
3
NO
2
is used as a standard.
Table 12.5 Example of some selected functional groups, their positions, shape and band strengths in IR spectra of bacteria.
Chapter 15
Table 15.1 Matching the analyte chemistry with the appropriate chromatographic stationary phase.
Table 15.2 Silylation reagents (Regis 1998/99
Chromatography Catalog).
Table 15.3 Acylation reagents (Regis 1998/99,
Chromatography Catalog
).
Table 15.4 Alkylation reagents.
List of Illustrations
Chapter 04
Figure 4.1 General chemical structures of organophosphate agrochemical sub‐classes: (a) phosphorothioate; (b) sodium‐di‐sec‐butyl‐phosphorodithioate; (c) phosphorothioic acid, methyl, 0‐ethyl; (d) phosphates; (e) phosphonates; (f) phosphoramidite; and (g) O,S‐dimethyl phosphoramidothioate.
Scheme 4.1 Proposed reactions of organophosphates and acetylcholinesterase (Raushel, 2011).
Scheme 4.2 Proposed acetylcholinesterase mechanism of action.
Scheme 4.3a Proposed interaction of acetylcholine with acetyl cholinesterase.
Scheme 4.3b Proposed interaction of acetylcholine with carbaryl.
Scheme 4.3c Proposed interaction of acetylcholine with chlorpyrifos.
Figure 4.2 Chemical structure of malathion.
Figure 4.3a(i) Proposed metabolic pathways of malathion in humans: Formation of specific malathion/malaoxon biomarkers in urine (MCA and MDA).
Figure 4.3a(ii) Proposed metabolic pathways of malathion in humans: Formation of non‐specific malathion biomarkers in urine (DMDTP and DMTP).
Figure 4.3b Proposed metabolism of malathion in fish/aquatic organisms.
Figure 4.3c Proposed formation mechanism of malathion metabolic biomarkers in plants (e.g. plant vegetables, crop plants).
Figure 4.3d Proposed metabolites of malathion in water.
Figure 4.4 Chemical structure of parathion.
Figure 4.5 (a) Proposed metabolic pathways for parathion in animals; (b) Proposed photolysis metabolic pathways for parathion.
Figure 4.6 (a) Proposed metabolic pathway for parathion‐methyl; (b) Proposed acidic hydrolysis metabolic pathway for parathion‐methyl; (c) Proposed alkaline hydrolysis metabolic pathway for parathion‐methyl; (d) Proposed metabolic pathway for parathion‐methyl in goats.
Figure 4.7 Chemical structure of pirimiphos‐methyl.
Figure 4.8a Proposed metabolic pathways of pirimiphos‐methyl in animals.
Figure 4.8b Proposed metabolic pathways of pirimiphos‐methyl in plants.
Figure 4.9 Chemical structure of diazinon.
Figure 4.10a Proposed metabolic pathways for diazinon in plants.
Figure 4.10b Proposed hydrolysis metabolic pathways for diazinon.
Figure 4.10c Proposed photolysis metabolic pathways for diazinon.
Figure 4.10d Proposed metabolic pathways for diazinon in animals.
Figure 4.11 Chemical structure of dichlorvos.
Figure 4.12 Chemical structure of coumaphos.
Figure 4.13a Proposed metabolic pathways for coumaphos in animals.
Figure 4.13b Proposed hydrolysis metabolic pathways for coumaphos.
Figure 4.13c Proposed photolysis metabolic pathways for coumaphos.
Figure 4.14 Chemical structure of chlorpyrifos.
Figure 4.15a Proposed metabolic pathways for chlorpyrifos in humans.
Figure 4.15b Proposed metabolic pathways for chlorpyrifos in plants.
Figure 4.15c Proposed metabolic pathways for chlorpyrifos in goats.
Figure 4.15d Proposed metabolic pathways for chlorpyrifos in fish.
Figure 4.16 Chemical structure of chlorpyrifos‐methyl.
Figure 4.17a Proposed metabolic pathways for chlorpyrifos‐methyl in animals.
Figure 4.17b Proposed metabolic pathways for chlorpyrifos‐methyl in plants.
Figure 4.17c Proposed hydrolysis metabolic pathways for chlorpyrifos‐methyl.
Figure 4.18 Chemical structure of azinphos‐ethyl.
Figure 4.19a Proposed metabolic pathways for azinphos‐ethyl in animals.
Figure 4.19b Proposed metabolic pathways for azinphos‐ethyl in plants.
Figure 4.20 Chemical structure of azinphos‐methyl.
Figure 4.21a Proposed photolysis metabolic pathways for azinphos‐methyl.
Figure 4.21b Proposed metabolic pathways for azinphos‐methyl in animals.
Figure 4.21c Proposed metabolic pathways for azinphos‐methyl in plants.
Figure 4.21d Proposed thermal degradation metabolic pathways for azinphos‐methyl.
Figure 4.22 Proposed urinary metabolites of permethrin in mammals (Crawford
et al
., 1981; Miyamoto
et al
., 1988).
Chapter 05
Figure 5.1a An example of a chemical structure of Botulinum neurotoxins (BoNT):‐ Amino acid sequence (top) and oligonucleotide sequence (bottom) of a specific fragment of BoNT/A using HE2 primer. The fragment is found in the amino acid position 635‐643 and nucleotide sequence 2037–2062 (Thompson
et al
., 1990).
Figure 5.1b The chemical structure and the proposed cleavage of Botulinum neurotoxin to form an active di‐chain (Ǻberg
et al
., 2013; Boyer
et al
., 2005).
Figure 5.2a General mechanism of action of botulinum toxins in specific cleaving of VAMP‐2 on the synaptic vesicle (Boyer
et al
., 2005).
Figure 5.2b General mechanism of action of botulinum toxins in specific cleaving of SNAP‐25 on the neuronal membrane (Boyer
et al
., 2005).
Figure 5.2c General mechanism of action of botulinum toxins in specific cleaving of SYNTAXIN A1 on the neuronal membrane (Boyer
et al
., 2005).
Figure 5.3 Targets and the proposed mode of action of toxins produced by
Clostridium perfringens
.
Figure 5.4 Proposed mechanism of action of alpha toxin.
Figure 5.5 Suggested processes involved in CPE‐induced cytotoxicity.
Figure 5.6 The proposed mechanisms of
Salmonella
gastroenteritis, enterocolitis, and diarrhea.
Figure 5.7 The chemical structures of some mycotoxin compounds (Nazari
et al
., 2015).
Chapter 06
Figure 6.1 Influenza virus
Chapter 07
Figure 7.1 Summary of the GMO production steps
Figure 7.2 The status of GMOs in African countries.
Chapter 11
Scheme 11.1 An example of the phenol‐based protocol for DNA extraction.
Scheme 11.2 Protocol for crude total cellular miniprep.
Scheme 11.3 An example of a cesium chloride gradient protocol for the separation of nuclear DNA and organellar DNA.
Scheme 11.4 The use of Chelex as chelating resins for vertebrate DNA extraction.
Scheme 11.5 Formalin‐based procedure for the isolation of DNA from museum‐preserved specimens.
Scheme 11.6 Procedures for the extraction of enriched cytoplasmic nucleic acid from animals.
Scheme 11.7 Protocol for DNA extraction from bird’s tissues and feathers.
Scheme 11.8 DNA extraction from fish tissues.
Scheme 11.9 Summary of the AFLP‐PCR procedure.
Figure 11.1a Cycle one: Summary of the procedures (in two cycles), showing the principle in which the technique operates.
Figure 11.1b Cycle two: Summary of the procedures (in two cycles), showing the principle in which the technique operates.
Figure 11.2 Illustration of the PCR method used as a detection method for microsatellites.
Chapter 12
Figure 12.1 Positions of selected spectroscopic bands within the electromagnetic radiation.
Figure 12.2 UV‐Vis in combination with HPLC and CE in food forensics.
Figure 12.3 An illustration of alignment of nuclei with spin on a magnetic field.
Figure 12.4 Infrared, terahertz and microwave vibrational spectroscopy waves.
Chapter 15
Figure 15.1 Chemical structure of some anionic exchange groups used in ion exchange chromatography: (a) quaternary ammonium; (b) tertiary ammonium; and (c) diethylaminoethyl (DEAE).
Scheme 15.1 General silylation chemical reaction (Knapp, 1979).
Chapter 16
Figure 16.1 Chemical structure of γ‐decalactone.
Chapter 17
Figure 17.1 Chemical structure of furosine.
Chapter 18
Scheme 18.1 DSC interpretation illustration.
Chapter 19
Figure 19.1 Schematic depiction of a biosensor.
Guide
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