Analytical Methods in the Determination of Bioactive Compounds and Elements in Food

Most bioactive compounds have antioxidant activity, particularly tocochromanols, phenolics (flavonoids and phenolic acids), methylxantines and capsaicinoids. Some of these compounds have also other properties important for human health. For example, vitamin E protects against oxidative stress, but it is also known for its non-antioxidant functions, including cell signalling and antiproliferation. Selenium compounds and indoleamins are the components of the antioxidant enzymes. Selenium makes vitamin E acquisition easier and controls its physiological functions. In taking part in enzymatic reactions and protecting the cell against free radicals, selenium shows immunomodulative, antiphlogistic, and antiviral activity. Capsaicinoids possess not only antioxidant, but also antibacterial, analgesic, weight-reducing and thermoregulation properties. Studies have also demonstrated their gastroprotective and anticancer properties.

Analytical Methods in the Determination of BioactiveCompounds and Elements in Food explores both the influence of particular compounds on human health and the methods used for their determination. Chapters describe various aspects of food and plant analysis, including chromatographic and nonchromatographic approaches as well as hyphenated techniques. Readers of this book will gain a comprehensive understanding of the important groups of bioactive compounds relevant to human health.

Explores both the influence of bioactive compounds on human health and the methods used for their determination Provides an overview of bioactive compounds with antioxidant activity, particularly tocochromanols, phenolics (flavonoids and phenolic acids), methylxantines and capsaicinoids Describes aspects of food and plant analysis, including chromatographic and non-chromatographic approaches as well as hyphenated techniques

Auteur

Magdalena Jeszka-Skowron, PhD is an assistant professor in the Institute of Chemistry and Technical Electrochemistry at the Poznan University of Technology in Poznä, Poland.

Agnieszka Zgo a-Grze kowiak, PhD, DSc is a professor in the Institute of Chemistry and Technical Electrochemistry at the Poznan University of Technology in Poznä, Poland.

Tomasz Grze kowiak, PhD is a volunteer scientist in the Institute of Chemistry and Technical Electrochemistry at the Poznan University of Technology in Poznä, Poland.

Akula Ramakrishna, PhD is a pipeline enablement scientist at Bayer Crop Science in Kallinayakanahalli, Chikkaballapur, India.

Contenu

1. Introduction bioactive compounds and elements in human nutrition.- 2. Application of liquid chromatography for the analysis of flavonoids in food an overview.- 3. Phenolic compounds in coffee and tea beverages.- 4. Methylxanthines in food products.- 5. Carotenoids as food products components and health promoting agents.- 6. Tocochromanols.- 7. Cyclitols - determination in food and bioactivity in the human organism.- 8. Capsaicinoids properties and mechanisms of pro-health action.- 9. Dietary indoleamines: bioavailability and human health.- 10. Bioactive peptides analysis.- 11. Determination of antioxidant biomarkers in biological fluids.- 12. Speciation analysis of food products.- 13. Two sides of selenium. Occurrence and determination of selenium forms in food and environmental samples using analytical methods