Indian seaweed species Enteromorpha linza, Enteromorpha prolifera, Ulv
a fasciata, Caulerpa taxifolia and Sargassum johnstonii from natural a
nd cultivated populations were evaluated for food safety and nutrition
al quality. Among the above seaweeds, Enteromorpha prolifera showed th
e highest caloric value and protein content, while these values were l
owest in Sargassum johnstonii species of natural habitat. The lipid co
ntent was maximum in cultivated seaweeds of E. linza and U. fasciata s
pecies. Crude fiber varied within a narrow range in all the seaweeds a
nalyzed. Protein efficiency ratio (PER) studies conducted with E. linz
a and U. fasciata showed low PER values compared to control rats fed o
n casein as source of protein. Acute oral feeding of seaweeds E. linza
, U. fasciata, C. taxifolia and S. johnstonii and subacute oral feedin
g of E. linza for 12 weeks did not produce any toxic effects on male a
nd female rats.