Difa

Some articles on difa:

Diferulic Acids - Occurrences
... The 8-O-4'-DiFA tends to predominate in grasses, but 5,5'-DiFA predomintes in barley bran ... nut, Cyperus esculentus) and sugar beet the predominant diferulic acids are 8-O-4'-DiFA and 8,5'-DiFA respectively ...