zeaxanthin is obtained from marigold flower by fermentation, extraction, concentration, saponification, isomerization, seperation, and purification. its main components are zeaxanthin and lutein.

specification:
zeaxanthin (hplc)        5%-10%
volatile matters         8.0% max.
lead                     10ppm max.
arsenic                  3ppm max.
total bacteria           1000cfu/g. max.
pathogenic bacteria 　   not detected