70 results about "Ergostanol" patented technology

The present invention is directed to variant squalene synthase enzymes, including Saccharomyces cerevisiae squalene synthase enzymes, and to nucleic acid molecules encoding these variant enzymes. These variant enzymes produce squalene at a lower rate than the wild-type enzyme, allowing more farnesyl pyrophosphate to be utilized for production of isoprenoid compounds, while still producing sufficient squalene to allow the S. cerevisiae cells to grow without the requirement for supplementation by sterols such as ergosterol. These variant enzymes, therefore, are highly suitable for the efficient production of isoprenoids.

The invention discloses a calcium tablet containing ergosterol and a preparation method thereof. The preparation method comprises the following steps: carrying out aerobic fermentation cultivation to saccharomyces cerevisiae by using a optimized culture medium, and improving the expression quantity of the saccharomyces cerevisiae to the ergosterol; and executing the solid-liquid separation to yeast fermentation liquor, freezing and drying the obtained supernate, to obtain a substance I; after diluting the obtained thallus by using normal saline, executing the solid-liquid separation through the pulsed electric field action, freezing and drying the obtained supernate, to obtain a substance II; mixing the substance I and the substance II, to obtain a substance A; uniformly mixing the substance A, Allah milk calcium, whole milk powder, maltodextrin and a sugarcane extractive, to obtain a mixture; and dissolving the mixture by using the water, spray-drying, pelletizing, drying, size-stabilizing, and tabletting, to obtain the calcium tablet containing the ergosterol. The provided calcium tablet containing the ergosterol is not only good for the absorption of the calcium, but also capable of effectively strengthening the human body immunity.