A plant containing natural source of astaxanthin carotenoid compounds and methods and compositions

The present invention provides a high content class is a derivative adonitol carotene compounds and methods and compositions, the carotenoid compound in a high content, the total carotenoid content of more than 95wt%, wherein the whole trans (3S, 3'S) - the ratio of astaxanthin in high levels of total carotenoids is less than 80wt%. Such carotenoids crystals having high purity, may be applied in various forms of human dietary supplements, food additives, feed additives and cosmetic fields. Meanwhile, the invention also provides a method for preparing a high content of carotenoid preparation of a compound derived from this side of Marigold, the simple and reliable method suitable for industrial production.