This book aims at introducing the non-specialist as well as the professionals in the fields of chemistry, biochemistry, biotechnology, food science and biomedical sciences into the biochemistry, applications and health benefits of an important group of natural products, phenolic acids. The book shows how phenolic acids display a potent antioxidant capacity and therefore health promoting effects and describe the phenolic acid composition in fruits and vegetables. The book also covers industrial applications related to phenolic acids. Furthermore, the book discusses the application of phenolic acids as food additives, since the preparation of foods with a high content of phenolic acids can lead to a reduction in the use of synthetic additives, resulting in healthier foods that can be included in the functional foods group. The book is of interest to specialists in the field but also to graduate or postgraduate students that are interested in this particular group of natural products.