The nature and source of astaxanthin
Astaxanthin is one of the 8 kinds feed coloring agents that Chinese Ministryof Agriculture allow using [Other 7 kinds include ²- carotene, ²- A Piao -8 -carotene aldehyde, chili red, ²- A Piao -8 - carotene acid ethyl ester, ²-carotene -...英国华人论坛