Preface -- Chapter 1 Bioconversion of agricultural waste into bioethanol and fertilizers -- Chapter 2 Recycling apple pomace in food and agro-industries -- Chapter 3 Drug delivery systems for apple pomace active compounds -- Chapter 4 Synthesis and photochemical applications of lignin-based metal oxide nanocomposites -- Chapter 5 Valorization of agricultural waste sitosterol in medicine -- Chapter 6 Tea fruits and flowers are an unexploited resource of medicinal active compounds -- Chapter 7 Recovery of food additives from agro-industrial residues -- Chapter 8 Extraction of bioactive compounds from food waste -- Chapter 9 Plant and food waste as a source of therapeutic compounds.

In the future circular economy all waste will be recycled into fuels, materials and active compounds. In particular, the food and agro-industries produce huge amounts of waste residues, which are actually underexploited and often polluting the environment. This book reviews the sources, extraction, processing and applications of value-added compounds from agro-waste, with a focus on drug delivery, tea, apple pomace, lignin nanocomposites, bioethanol, fertilizers and sitosterol. Food residues provide bioactive molecules, enzymes, vitamins, antioxidants, and animal feed.