Abstract
As already stated in previous papers, the authors proposed the new chemical process for manufacturing crude agar substance having ca. 60% content from Gr. confervoides. Now, pure agar-agar was prepared by the two methods, that is, freezing method and successive mechanical dehydration and hot air drying method from this crude agar substance, and its colour, composition, inorganic matter, jelly strength and other physical properties were compared with those of market agar-agar and one made from Geli?ium amansii.
The result showed that this chemical manufactured agar-agar from Gr. confervoides is far superior to others in quality and far exceeds the standard of the pharmacopoeia of the united states of America.
