自本世纪四十年代开始,一些国家的科学工作者便着手研究利用江篱作为制造琼胶的原料。我国在1951年也开始这方面的研究工作,解决了江篱琼胶的凝胶强度问题,制成了质量良好的江篱琼胶,在六十年代建立了我国的江篱琼胶工业。江篱品种不同对琼胶的产率和凝胶强度影响很大。此外,由于采集季节不同,其琼胶产率和凝胶强度亦均有变化。1946年De Loach等人测定了7—11月采集的江篱(Gracilaria Verrucosa),发现7月采集的产率最高(34%),同时凝胶强度也最 Since the 1940s, scientists in some countries have been studying the use of jades as raw materials for the manufacture of agar. Our country also started the research in this aspect in 1951, solved the problem of the gel strength of Jiangling agar and made Jianghai agar with good quality. In the 1960s, we established Jiangling Agar Industry in our country. Different varieties of jade have a great influence on the yield and gel strength of agar. In addition, agar yields and gel strengths also varied due to different seasons. In 1946, De Loach et al. Determined the Gracilaria Verrucosa collected from July to November and found the highest yield (34%) collected in July and the highest gel strength