Seaweed is a large alga growing at tideland or sub-tideland. There are 3 series of alga including green alga, brown alga and red alga. According to the research result, seaweed contains multifold amino acids, unsaturated fatty acids, vitamins, minerals and fucoidan incomparable by land plants. It has a great market and application potential.

The wide application of seaweed has a long history. There are lots of records concerning the utilization of seaweed to produce food or cure some diseases in ancient China and Japan. Greek used seaweed as animal feed as early as the year 100BC, and the ancient Tonga people firmly believed that alga could bring them healthy and long life, and they have taken seaweed as food since 3,000 years ago.

Along with the economic development and the rapid expansion of peoples’ knowledge, the traditional nutritional substances can no longer meet human’s needs; meanwhile, the utilization and effects of seaweed products have drawn great affection of mankind. It is found that Seaweed imbibes many rare minerals in sea water. These rare minerals are transformed to chelate organic matters, which can be absorbed easily by animals. During the prosperous growing period, seaweed contains large quantities of active substances including UGF. If these active matters can be extracted and added to animal fodder as ingredients, it will greatly enhance the feed biotransformation and promote the healthy growth of animals. In addition seaweed supernatural compositions can make people more healthy, improve immunity and antiviral capacity. According to different requirements, seaweed has been applied in feedstuff, food, cosmetic and pharmaceutical fields, and now is widely applied in all over the world, especially in Europe, America and Southeast Asia