ABSTRACT
A wide variety of nutraceutical compounds, food additives and foodstuffs may be produced through the bioconversion of substrates contained in agricultural crops and residues. Bioconverted products include traditional foods and beverages such as beer, wine, vinegar, yogurt, tofu, and Baker’s yeast. Bioconverted nutraceutical and food products used in the food industry range from avor compounds (roasted, nutty avor of pyrazine produced through aerobic solid-state fermentation of soybeans by bacterium Bacillus subtilis, fruity avor of citronellol, linalool and geraniol produced
CONTENTS
17.1 Introduction..............................................................................................509 17.1.1 Xylitol ............................................................................................. 511
17.2 Summary of Unstructured Microbial Growth Models...................... 513 17.2.1 Unstructured, Single Limiting Nutrient Models .................... 514
17.3 Inhibition Models .................................................................................... 515 17.4 Models for Multiple Limiting Substrates or Nutrients ...................... 517
17.4.1 Yield Parameters .......................................................................... 520 17.4.2 Temperature Effects .................................................................... 521
17.5 Kinetic Rate Expressions ........................................................................ 522 17.6 Bioreactor Design .................................................................................... 524 17.7 Batch Reactors .......................................................................................... 525
17.7.1 Continuous Stirred Tank Reactors (CSTRs) ............................. 525 17.8 CSTR with Cell Recycle .......................................................................... 527
17.8.1 Fed-Batch Systems ....................................................................... 529 17.9 Bioreactor Design Strategies ..................................................................530
