The "white frost" on the fruit is a waxy protective layer

"Blush" is the fruit powder. Fruits such as grapes, plums, currant, blueberries, and coriander are often covered with a layer of white-cream-like powdered material called fruit powder, also known as fruit cream. The fruit powder is a waxy protective layer that is naturally formed during fruit development and naturally covers the entire fruit surface evenly.

A "white frost" indicates good quality. Fruit powder is not only the fruit trait indicator of the above fruit, but also the appearance quality evaluation index of some fruits. For example, the national standard "Blueberry" (GB/T27658-2011) requires that the blueberry quality products and first-class products should be complete; the domestic trade industry standard "pre-packaged fresh grape circulation regulations" (SB/T10894-2012) requires first-class grapes Fruit cream should be uniform and complete. In addition to the above-mentioned fresh fruit, persimmon processed white persimmons also have white cream-like substances, namely, persimmon cream, which is a white cream produced on the appearance of persimmon cakes when persimmon is made of white persimmons. The national standard "Quality Grade of Persimmon" (GB/T20453-2006) requires that special grade persimmon cakes should have white persimmon cream with a coverage of more than 80%, and grade 1 persimmon cakes should be persimmon with cream white or gray and cover more than 50%. Since the fruit powder is not a nutrient, the fruit powder on the fruit can be washed away when the fruit is consumed.

Excerpted from "Agricultural Product Quality Safety Production Consumption Guide"

Lower limb External Fixation

External fixation of the lower limb is a treatment used to fix a fracture or dislocation of the lower limb.The functions of these external fixation methods are mainly as follows.

1. Stabilize a fracture or joint dislocation.External fixators can fix the bone or joint in the correct position to prevent further displacement or dislocation,thereby promoting the healing of the fracture or joint dislocation.

2. Pain relief,external fixators can reduce pain and discomfort by fixing and supporting fractures or joint dislocations.

3. Promote fracture healing,external fixator can provide a stable environment,promote fracture healing and bone tissue regeneration.

4. Protect surrounding tissues.External fixators can protect surrounding soft tissues (such as muscles,tendons and blood vessels) from further damage and reduce the occurrence of complications.

In general,the classification and function of lower limb external fixation is mainly to stabilize and protect fractures or joint dislocation,promote healing and restore function.The specific treatment should be selected according to the patient's condition and the doctor's advice.

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