Doctor: I would like to ask why the goji berries lose their color after washing

The color substance of wolfberry is generally carotenoids, insoluble in water, and is suspended in water to orange, which will precipitate for a long time.

Ningxia dried wolfberry grains are oblong, sweet in taste, slightly sweet in aftertaste, ruddy in color, light in soaking water, light naked grains, and easy to float.

Xinjiang wolfberry, then it should be round, extremely sweet, red when the color is fresh, dark and easy to become soft, grain weight, water color after soaking in water, easy to sink.

Inner Mongolia wolfberry should be oblong, sweet in taste, dark red in color, bare grain weight, reddish in water, and easy to sink.

Generally, the dyed wolfberry is very red as a whole, even the small white dot at the stem of the wolfberry is also red, while the stem of the normal wolfberry is white, you may wish to see if there are small white spots on the stem of the wolfberry you bought, if it is red, then it is dyed.

However, there are not many goji berries dyed with pigment, but many are smoked with sulfur. When buying wolfberries, you have to look at them twice. One look is to see if the color is too bright, no matter how good the wolfberry is dried, it also shows a darker orange color, and the kind of product that looks bright is basically smoked with sulfur!

You can also smell if there is a sulfur smell, that is, the smell of match heads.

Goji berries will not fade, and fading is an abnormal phenomenon. Real wolfberry will not fade, if it is dyed wolfberry, it will fade after washing, the dyed wolfberry is red as a whole, even the small white dot at the stem of the wolfberry is also red, and the stem of the normal wolfberry is white, and the dyed wolfberry can not be eaten, so as not to endanger health. <

Goji berries will not fade, and fading is an abnormal phenomenon. Real wolfberry will not fade, if it is dyed wolfberry, it will fade after washing, the dyed wolfberry is red as a whole, even the small white dot at the stem of the wolfberry is also red, and the stem of the normal wolfberry is white, and the dyed wolfberry can not be eaten, so as not to endanger health.

Reasons: 1. It has been dyed. Then such wolfberries are fakes, which are dyed by merchants, and this red pigment is integrated into the water, and when it is washed, it will appear red.

2. Smoked with sulfur. Then this kind of goji berry looks bright red, while the normal one is dark red, this bright red goji berry will darken in color during the cleaning process, but the cleaning water has a sour smell and will not change color.

It is not normal for goji berries to wash and fade. It is well known that the common goji berries are red, and the main reason for this is related to the ingredients contained in them. Then it contains carotenoids, which are dark red, but this ingredient does not dissolve in water, which means that the wolfberry will not appear red for how long it is soaked, let alone wash it to lose red.

Therefore, it is not normal for wolfberry to wash and fade.