Due to the unique efficacy and high medicinal value of black wolfberry, many unscrupulous traders will have the following counterfeiting methods.
1, blueberry fruit instead, with smaller blueberry fruit de-seeded and dried.
2, dyed with other similar fruit.
3, with Tangut white thorn fruit instead, white thorn fruit is also a medicinal herb, the fruit is nearly spherical, diameter of 5mm or so, the fruit is red at the beginning of maturity, and then black, but it only has a very hard seed.
Here we will see how to identify the real black wolfberry.
Taste
When buying black goji berry can try to taste first, through the sweetness to distinguish between real and fake goji berry. Generally speaking Tangut white thorn fruit has high sugar content and sweet taste, black wolfberry is not as sweet as Tangut white thorn fruit.
Does it turn into powder after drying
The real black wolfberry becomes powder when it is dried, while Tangut white thorn fruit does not, because of its high sugar content and a fleshy feeling, so it is difficult to pinch into powder.
Soaking water to identify
Experts said that the white thorn fruit and black wolfberry color is about the same, do not look carefully is not visible. But put the white thorn fruit into the water, the color of the bubble is lighter, blueberry is also, and black wolfberry bubble water excellent fast, color is thick, and in different water quality will show different performance, such as bubble acidic water (mineral water) into purple, bubble alkaline water (mountain spring water, tap water, etc.) into blue.
Shape identification
The seeds of black wolfberry and red wolfberry, a fruit with 7-8 seeds, seeds such as kidney-shaped; and white thorn fruit only a very hard seed. If you buy the "black wolfberry" within only one seed, can be initially determined to be counterfeit. In addition, the finished black wolfberry in the dry, stalk up can stand up, and remove the stalk after the part is a very round, very white circle, dry and hand pinch into powder, which is other fake fruit does not have the characteristics.
Selling price identification
The real black wolfberry, especially the wild growth, precious resources, limited production, a kilogram at least two thousand dollars. And with other counterfeit black wolfberry fruit, a kilogram is often high but a hundred yuan. If you encounter the price is too low black wolfberry, we should be alert, may be a counterfeit.
Microscopic identification
Black wolfberry pericarp cross-section: black fruit wolfberry exocarp is a row of flat cells, thick wall, outside the cuticle, the outer edge is microwave-like protrusion. Mesocarp is a dozen rows of thin-walled cells, the cells contain calcium oxalate square crystal. Vascular bundles of double toughness are scattered. The endocarp cells are in one row, smaller and tangentially extended.
