Lignin

CONTENTS
I. Introduction 61
II. Pathways of lignin biosynthesis in plants 61
III. Artificial preparation of lignin by enzymic dehydrogenation of coniferyl alcohol 63
IV. Isolation of lignin and lignin–carbohydrate bonds 65
V. Analytical data 67
VI. The structure of lignin 67
VII. Reactive groups in lignin 69