To put it simply, to distinguish the quality of lotus seeds, it is necessary to achieve "one look, two smells, three boils".
At first glance, it means to see if it is a white lotus seed soaked in chemical potion.
If it is a chemical potion soaked in white lotus seeds, do not buy, hand peeled and machine-ground white lotus seeds can be bought. Handmade white lotus seeds have a little natural wrinkled skin, while machine-ground white lotus seeds have a little residual red skin on it, both of which can be. However, the white lotus seeds peeled by the chemical potion will have a little swelling in the place of the knife marks during processing, and the normal lotus seeds will be a little yellowish after the sun has been sunburned, which is jade white, or it is not particularly white, but the chemical potion soaked or smoked lotus seeds are pure white, which looks relatively white.
Second smell, refers to smelling when it is about to be raw, and it is also necessary to smell it after cooking.
Smell is to see if the lotus seeds have a fragrant smell. Good lotus seeds have a fresh rice fragrance, and the non-fresh lotus seeds do not smell very good, there is a white rice noodles for a long time that smells of steamed, is a little sour, a little strange. The lotus seeds that have been soaked or smoked by chemical potions smell pungent and are not very good.
Cooked smell refers to the high-quality, good white lotus seeds after cooking smells a faint fragrance, and swelled very large, but the chemical peeled white lotus seeds, after cooking the size does not change much, and smells there is a smell of alkali, more unpleasant.
Three boils refer to the quality of tasting white lotus seeds after cooking.
Good white lotus seeds, cooked in a pressure cooker for about 15 to 20 minutes will rot, and eat powdery, very soft, very fragrant, but chemical potion soaked or bad white lotus seeds, how to cook is difficult to cook rotten.
In general, the essentials of selecting white lotus seeds are "one look, two smells, three boils", you boil white lotus seeds also remember to remove the pain in the middle of the white lotus seeds, because the lotus heart contains a certain amount of alkaloids and flavonoids, animal mouse studies [1] found that when the total alkaloid content of 1000 grams of lotus seeds reaches 5 grams, it is the maximum tolerated dose of mice, if you eat too much at one time, it will contain low toxicity.
This issue is written by Liao Yuying and Zhao Lichao
Editor: Peng Mingqian
bibliography:
[1] Yang Xiaoqing, Song Jinchun, Xie Shunlan, et al. Toxicity test of total alkaloids of Lotus Heart[J].Pharmacy and Clinical Research, 2015(4):351-354.
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