雨生红球藻Haematococcus pluvialis（玉

Production, Extraction, and Quantification of Astaxanthin by Xanthophyllomyces dendrorhous or Haematococcus pluvialis: Standardized Techniques

For many years, benefits and disadvantages of pigments production either by microalgae or yeasts have been under analysis. In this contribution we shall deal with Xanthophyllomyces dendrorhous (formerly Phaffia rhodozyma ) and Haematococcus

血球容量 h（a）ematocrit

色原，由于此物质是显著的红色色素．所以称为色素原（ chromogen）是不合适的。 　　（ 2）红球藻属（ Haematococcus）．桔色藻属（ Trentephclia），雪衣藻（ Chlamyclomonoasnivalis）等所含的红色素。特别是后者，因为血色素掩盖了叶绿素，所以看上去是红色，也是高山和极地所见的红雪的原因． 　　（ 3）极低等的动物，在血液循环时，氧气只需物理的溶解在血中就可以，但在大多数动物，氧的运输则需要靠血中特殊的媒介物——血色素．昆虫的血液

Ketocarotenoid Biosynthesis in Transgenic Microalgae Expressing a Foreign -C-4-carotene Oxygenase Gene

from Haematococcus pluvialis and synthesize a new ketocarotenoid that the vegetative cells of Chlamydomonas do not synthesize in the natural way. The methodology needed to successfully achieve metabolic engineering of ketocarotenoids synthesis in Chlamydomonas