- immunostimulation
- tired feeling
yeast cell wall < for human >
yeast cell wall < for human >
Yeast is composed of cytoplasm that contains nutrients and umami flavor components, and cell walls that surround the cytoplasm like a shell. The cell walls contain high quantities of substances such as beta-glucans and mannan. Pure yeast cell wall extract is called brewing yeast cell walls.
Research background
The essential ingredients for brewing beer are water, malt, hops and beer yeast. Spent beer yeast removed after being used for brewing contains many of the nutrients derived from the wort. The Asahi Group was one of the first brewers to focus on the nutritional value of brewer’s yeast, and began researching effective uses for brewing byproducts.
Major research findings
- Higher immunoglobulin A antibody levels
- Prevention of drops in white blood cell counts
- Better immunity scores
- Reduced fatigue
Creating a society of health and abundance
Tests in mice have shown that brewing yeast cell walls could potentially raise levels of immunoglobulin A antibodies (which help fight viruses and other pathogens), and prevent drops in white blood cell counts (which play a key role in immunity). Tests in human subjects have also shown that brewer’s yeast cell walls reduce fatigue and boost levels of natural killer cells (a type of lymphocyte critical to the immune system). Studies have shown that declining immune function might come from a number of different causes such as aging, stress and fatigue. So by providing a more complete scientific description of the relationship between brewing yeast cell walls and immune function, Asahi will pave the way to more extensive use of brewing byproducts while helping promote and maintain human health.
Research information on brewer's yeast cell wall < for human >
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Paper
Yeast mannan increases Bacteroides thetaiotaomicron abundance and suppresses putrefactive compound production in in vitro fecal microbiota fermentation
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Paper
Prebiotic effects of yeast mannan, which selectively promotes Bacteroides thetaiotaomicron and Bacteroides ovatus in a human colonic microbiota model
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Paper
Effects of Yeast Mannan Which Promotes Beneficial Bacteroides on the Intestinal Environment and Skin Condition: A Randomized, Double-Blind, Placebo-Controlled Study
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Paper
Material balance and energy consumption in the factory-scale coproduction of glucan and mannan from yeast extract residue