면역력 보조식품 - 폴리감마글루탐산칼륨?

비타민 C, 비타민 D, 아연

https://www.costco.com/nature-made-super-c-with-vitamin-d3-and-zinc%2c-200-tablets.product.100678859.html

이게 코비드-19 에는 좋습니다 

영양 보조 제품들이 쏟아지는 시대에 항상 어느 특정 성분을 찍어서 보조 식품으로 파는 상술은 항상 존재하네요.

결론적으로 청국장에 자연적으로 들어 있는 물질입니다. 

Poly-gamma-glutamic acid (γ-PGA) is an anionic polypeptide in which the α-amino and γ-carboxyl groups of glutamic acid are polymerized by a γ-amid linkage.1, 2 γ-PGA is a water-soluble, mucilaginous and biodegradable compound that is edible and non-toxic to both humans and the environment.2, 3 γ-PGA has been widely used as a supplement in foods, cosmetics and drug delivery systems, and its peptides exhibit many bioactive functions. γ-PGA is a mucilaginous compound that is naturally synthesized by Bacillus subtilis in fermented soybeans and is present in traditional soy products, including cheonggukjang in Korea and natto in Japan. These foods are generally considered to be healthy, as they are rich in vitamins and other nutrients. The γ-PGA concentration in cheonggukjang is generally in the range of 13–17%, which is slightly higher than that of natto by 0.1–0.8%.4 There have been several reports describing the various physiological properties of γ-PGA, which include fibrinolytic, anti-cancer, anti-hypertensive, hypocholestrolemic, anti-oxidative and anti-inflammatory activities.5

https://www.nature.com/articles/cmi201613