ABSTRACT
In recent years interest in polyunsaturated fatty acids (PUFA), especially the n-3 PUFA, has increased considerably due to their various physiological functions in the human body and their beneficial effects on human health (1-4). Until recently, fish oils have been the only major sources of these fatty acids (FA); now we have the advent of single cell oils (SCO) with the identification of several marine microorganisms that contain substantial quantities of PUFA. These are now considered to be the major sources of these important FA that are covered in the various chapters in this book.
