Minimize Apple Bruising in the Packing Line (E2290)

Minimize Apple Bruising in the Packing Line (E2290)

Apples on the tree are generally free of bruise damage, but after traveling through a series of handling processes, apples in the retail store often show bruises.

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Apples on the tree are generally free of bruise damage, but after traveling through a series of handling processes, apples in the retail store often show bruises. In general, the culprits inflicting most of the bruises are existing apple packing lines, when compared to other postharvest related operations (orchard operations/handling, transportation). Analysis of packing lines using a computerized impact measuring sphere that is the approximate size of an apple, laboratory test results, and observations of transfer designs and techniques identified transfer methods between packing line components that minimize apple bruising. Fundamental recommendations in order of importance are:

1. Minimize or eliminate height differences at transfer points between components.

2. Control fruit velocity at transfers by using active or passive control devices.

3. Use cushioning materials and designs to absorb impact.

4. Synchronize timing between components.

5. Limit component operating speeds.

6. Eliminate high velocity impacts.

 

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