The author (Dr. N.K.Mathur) of this book retired as Chairman and Professor, Department of Chemistry, JNV. University at Jodhpur-3, India. Dr. Mathur has carried extensive research in varied fields of chemistry, particularly on polysaccharides. He has worked as a consultant and adviser for galactomannan industries. He has helped in "Human resource development" and carried "Industrial research' on polysaccharides. He has visited several countries world-over, and lectured in seminars/ symposium. He has authored over one hundred research papers, reviews and science article and international monographs.