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How to judge Zhongning Lycium barbarum and distinguish toxic Lycium barbarum?
First, the appearance appraisal

1, distinguished by color.

Fresh Lycium barbarum L. has different colors due to different producing areas, but it is soft, shiny and full of meat. However, the dyed medlar is mostly used in previous years. Sensually, the meat quality is poor and dull, but the appearance is bright and attractive. The sharp stalks of normal Lycium barbarum are mostly yellow or white, the stalks of Lycium barbarum soaked with pigment are red, and the stalks of Lycium barbarum baked with sulfur are dark brown. Because Lycium barbarum dyed with pigment is particularly afraid of water, it is suggested that you can put a few Lycium barbarum in water or rub them with wet hands on purpose when buying Lycium barbarum. If the color fades, it means that the pigment has been used.

It should be emphasized that there is a sign of Ningxia Lycium barbarum, that is, there is a white spot on the top pedicle, which is caused by the immature picked Lycium barbarum, and it is not a sign of good Lycium barbarum. Ningxia's climate, Lycium barbarum will crack after maturity, so you can only pick nine mature Lycium barbarum, which will produce that white spot. Qinghai Lycium barbarum is picked after it is ripe, especially Lycium barbarum without chemical fertilizer. It won't crack or rot when cooked, so there is no white spot.

Step 2 tell from the smell

For Chinese wolfberry fumigated with sulfur, just grab a handful and cover it with your hand for a while, then put it under your nose and smell it. If you can smell the pungent and choking smell, you can be sure that it has been fumigated by sulfur.

Step 3 tell from the taste

Good quality medlar tastes sweet and innocent. Insufficient growth period, excessive rain, excessive application of chemical fertilizers and pesticides, and the taste of Lycium barbarum treated with chemicals when it is dried is sour, astringent and bitter, with the taste of chemicals.

Second, the origin and quality of Lycium barbarum

The origin has a great influence on the quality of Lycium barbarum.

The main nutritional components of Lycium barbarum are Lycium barbarum polysaccharide, carotene, riboflavin and ascorbic acid, which are accumulated by sunshine time, growth time and temperature difference between day and night. From the national planting bases, Qinghai and Xinjiang have the longest sunshine time and the largest temperature difference between day and night. Qinghai Chaidamu Lycium barbarum base only picks three crops a year, and the growth time is the longest.

The factors affecting the quality of Lycium barbarum include land quality, air quality and irrigation water. Judging from these conditions, the land in Delingha planting base in Qaidam, Qinghai Province is the cleanest, with the least pollution from chemical fertilizers and pesticides, the best air quality and the unique quality of irrigation water for snow-capped mountains. Therefore, Lycium barbarum in Delingha, Qaidam is the top pollution-free Lycium barbarum with zero pesticide residues.

In recent years, Lycium barbarum merchants in Ningxia have rushed to Qaidam, rented land to plant or buy Lycium barbarum, and shipped it back to Ningxia for processing and packaging, which is the tribute of Lycium barbarum in the market.

Third, planting methods and quality.

The main nutritional components of Lycium barbarum are represented by Lycium barbarum polysaccharide. In this respect, the sweeter the wolfberry, the better. Some people say that too sweet Lycium barbarum is not good for diabetics, which is an ignorant misunderstanding. Lycium barbarum polysaccharide itself has the function of lowering blood sugar, and the higher the sugar content, the better for diabetics. What conditions can make Chinese wolfberry accumulate more sugar?

In addition to the above production conditions, it is a good planting method. At present, in order to pursue yield, most planting bases in China use a lot of chemical fertilizers and pesticides, and the fruits are picked at most 7-8 times a year, with high yield and poor quality. The Lycium barbarum base in Delingha, Qaidam, Qinghai, mostly uses sheep manure, rarely uses chemical fertilizer, and only uses biological pesticides as pesticides. Only three crops are picked a year, with good quality and zero pesticide residue.

Four, processing methods and quality

The climate in Qaidam, Qinghai is very dry, and the fresh fruit of Lycium barbarum can be dried naturally, which can ensure the quality of Lycium barbarum. Products in many areas can't be dried naturally because of low quality and rainy weather. They need to be soaked with drugs and fumigated with sulfur to maintain a good appearance. This is also what people often say, poisonous medlar, it is useless to eat it. There is a saying in a famous Lycium barbarum base in China that poisoned Lycium barbarum is a street.

A sentence circulating on the Internet has certain reference value for purchasing Lycium barbarum. "China Lycium barbarum is in Ningxia, Ningxia Lycium barbarum is in Zhongning, and Zhongning boutique comes from Qaidam". In the harvest season of Lycium barbarum, Lycium barbarum merchants will go to Chaidamu Lycium barbarum base to purchase in large quantities and process them into fine tribute fruits for sale.

Special reminder: Lycium barbarum is a good thing, very safe food, and does not contain any toxins. It is a homologous food of medicine and food approved by the Health Planning Commission, and its health care value is comparable to that of Cordyceps sinensis, which is suitable for human long-term consumption. Unfortunately, driven by interests, most Lycium barbarum L. is artificially produced through excessive application of pesticides, fertilizers, herbicides, dyeing and soaking, environmental pollution, excessive heavy metals and other factors, which is a waste of time and makes people sad.

Eating Lycium barbarum must meet two conditions, zero pesticide residue and high quality. The real high-quality medlar with zero pesticide residue is more than three times as expensive as other medlars. Pay attention to these two points when buying, otherwise it will not only have no health care effect, but will buy a whole body of problems.