The main component of Peng Ash is potassium carbonate, with molecular formula of K2CO3 and molecular weight of 138. Peng ash is grass ash made of grass, which has been used for hundreds of years. In addition, Peng Hui is only used in Lanzhou beef noodles, and there is no national standard. When added to Lamian Noodles, it can increase the taste of Lamian Noodles and make it more "thick". In Wuwei, Gansu, it was also added to a special kind of pasta dough.
At present, one kind of Peng ash used in the market is burned by Peng Cao, and the other is prepared by enterprises according to their ingredients. Peng ash contains lead and arsenic, but the content is far below the national standard. The Health Supervision Institute has been conducting regular and irregular sampling inspection on the plasters used in beef noodle restaurants, and found that the lead and arsenic content of the prepared plasters is lower than that of the burnt plasters.
Extended data
Peng ash effect:
Grey crown, also called water crown, flying crown and firewood crown in some places. Born in hills, mountains and wasteland, it is a kind of vegetation with high alkali content and many seeds.
When germinated, they are tiny, tender and extremely green leaves. When they grow up, they become awn-shaped, with silvery stems and tiny needles, like antlers on deer heads and bright green and bright Guo Cui. In autumn, small yellow flowers bloom and become seeds. After seed setting, the leaves turn yellow and fall off, leaving only branches and seeds, which are blown away by the wind and grow again next year.
Grifola frondosa contains strong alkalinity and its seeds contain more starch, which can be used as feed. In the difficult period of three years, people grind their seeds into flour to satisfy their hunger. This kind of flour is bitter and difficult to swallow. The black stone mentioned in the eleventh episode of Japanese cartoon "Little Master China" for boiling "alkaline water" is Peng Hui.
Baidu Encyclopedia-Peng Hui