The role and efficacy of yeast

Many products now feature yeast, which shows that it has many functions and effects, but in fact, yeast does not necessarily have good effects. Active yeast has a good repairing and moisturizing effect on human skin, so it is particularly important for female friends who love beauty to choose skin care products containing active yeast. If you are interested, you can also learn about the difference between yeast and active yeast.

1. Effects on the skin

Active yeast is a "living" nutrient that contains extremely rich active substances and has a good effect on repairing and regenerating the skin. Because live yeast has its own life characteristics and will die at too high a temperature, it has very strict requirements on the storage environment. In addition, live yeast has a short survival period and is expensive to produce. Therefore, it is mostly used in the production of high-nutrition regenerative skin care products.

Generally, if about 1% of live yeast is added to cosmetics, its value will increase 5 to 10 times. At present, most of the cosmetics containing live yeast sold on the market are imported, and their price is more than 200 yuan per bottle.

A well-known brand's patented ingredient, pitera, is a liquid extracted during the fermentation process of a special yeast called saccharomycopsis. However, Pitera requires sodium hydroxide, polytetrafluoroethylene, and sodium benzoate to be used in combination. This extract needs to be activated to work, and the yeast activity used in skin care products is generally 30%.

Active yeast has its own life characteristics and does not need to be activated again. It can penetrate into the skin the moment it touches the skin, reach the bottom layer of the skin, repair and regenerate the skin's basal cells, and restore the skin's whiteness, elasticity and smoothness, making it look like a new life.

2. Yeast

Yeast (saccharomyce) is a eukaryotic receptor cell commonly used in gene cloning experiments. Cultivating yeast is as convenient as culturing Escherichia coli. There are also many types of yeast cloning vectors. Yeast also has plasmids. This 2pm long plasmid is called a 2um plasmid, which is about 6,300bp. This plasmid exists outside the chromosome in the cell nucleus for at least some time. Using the 2pm plasmid and the plasmid in E. coli, a shuttle plasmid that can shuttle between bacteria and yeast cells can be constructed. Yeast cloning vectors are all constructed on this basis.

Yeast is a unicellular fungus and is not a unit of systematic evolutionary classification. A tiny single-cell microorganism that is invisible to the naked eye. It can ferment sugar into alcohol and carbon dioxide. It is distributed throughout nature. It is a typical heterotrophic facultative anaerobic microorganism that can survive under both aerobic and anaerobic conditions. It is a natural fermentation agent.