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are used as human or animal food depends on the quality of input material and the processing methods and equipment.
* The material may be processed by wet or dry means.
**In wet processing, either boiling water or steam is added to the material, separating fat into a floating phase.
**In dry processing, fat is released by dehydrating the raw material.
* The temperature range used may be high or low.
* Rendering may be done either in discrete batches or in a continuous process.
* The processing plant may be operated

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