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Winter has arrived, oranges are sweet, but recently there are claims on the Internet that eating oranges will make the new crown antigen test positive, what is the truth, this issue of [Gan Po Food Said], Jiangxi Provincial Market Supervision Bureau expert team with you "orange.
" "Clear rumors
.
Oranges are also "positive"?
In the online video, the photographer dripped orange juice into the new crown antigen test kit, and the test result was positive
.
Orange juice is dropped directly into the detection well, and orange juice with a lower pH destroys the colloidal gold structure, resulting in false positives
for antigen results.
But in fact, the antigen test sample comes from the nasal mucosa, not from the digestive tract
.
Therefore, antigen nucleic acid detection should be strictly operated by installation instructions, and the results obtained are of reference significance
.
After eating oranges, low-acid orange juice may remain in the digestive tract (oral or pharyngeal mucosa), but it will not affect the nasal mucosal sample, and antigen testing will not affect the test results
.
Can salt steamed oranges stop cough?
With the arrival of the peak of the first wave of the epidemic, a variety of "home remedies" to relieve symptoms have also spread in the circle of friends, and "salt-steamed oranges can relieve cough" is one of
them.
Although ingredients such as hesperidin and noscapine contained in orange peel can be used in cough medicines, the cough suppression effect of salt-steamed oranges varies
from person to person.
In addition, the process of cooking destroys nutrients such as Vc in oranges, and too concentrated salt water can even irritate the airways and cause coughing to worsen
.
It should be remembered that cough is not a disease but a symptom, and the cause of cough should be found and the right medicine should be prescribed, and diet therapy cannot replace the drug treatment of the disease
.
Can orange vitamin C supplement prevent new crown?
Vitamin C has been found in new crown clinical trials to improve immunity and oxidative damage, so daily intake of moderate amounts of Vc can improve the body's disease resistance
.
And each 100 grams of orange contains about 30-100 mg of Vc, which is higher
than the lemon that supplements the Vc artifact circulated on the Internet.
Therefore, moderate consumption of oranges can meet the daily needs of the human body and enhance immunity to the new crown
.
However, it is unrealistic and unscientific to significantly improve immunity and prevent the new crown by supplementing Vc in large doses
.
Storage of oranges
Oranges have a thick skin and are shelf-stable fruits, and their skin is generally dried and placed in a cool and dry place to store for a long time
.
The single fruit can also be encapsulated with plastic wrap (PE film) for simple modified atmosphere storage to inhibit the reproduction of microorganisms and reduce water loss
.
For orange preservation, pervasive mold is the most headache, so the orange skin will be preserved by waxing
.
According to the National Standard for Food Safety, Standard for the Use of Food Additives (GB 2760-2014), morpholine fatty acid salts (also known as fruit waxes), carnauba wax, etc.
can be used on the surface of
fresh fruits.
In addition, if moldy oranges are found, they should be picked up and discarded in time to avoid contaminating other oranges
.
(Edited by Li Chuang)