Preface

Tannins are one of the polyphenols group found in plants and are mainly studied because of their structural properties and bioactive behavior. Every year new findings concerning their properties and functions are made, and today concerns are mainly focused on how they can be used efficiently in the wood, food, textile, health, and pharmaceutical industries. Thus, the aim of this book is to present the most updated information on the structural properties of tannins, their food sources and variations, biological properties, and health, among other important issues. In addition, the most recent methods used for their isolation, quantifications, and industrial applications will also be covered.

**Alfredo Aires (PhD)**

CITAB—Centre for the Research and Technology of Agro-Environmental and Biological Sciences, University of Trás-os-Montes and Alto Douro, Agronomy Department, Vila Real, Portugal

**II**

**Chapter 7 117**

Applications of Tannins in Industry *by Akhlash P. Singh and Sunil Kumar*

**1**

Section 1

Sources, Utilization and

Biological Activity
