Agar powder is a phycolloid extracted from a group of red marine algae,it solube in hot water but insoluble in cold wate性状：本品有海洋中生长的红藻为原料精制而成的水胶体，易溶于沸水，不溶于冷水，作为凝固剂、增稠剂、乳化剂、悬浮剂和干燥剂可应用于微生物培养基、生物工程、食品加工等。