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| | Raisins - Background, History, Raw Materials, The Manufacturing, Quality Control |
 | | The Sultana grape is nearly seedless, but they make inferior raisins because they are less meaty, have a high acid content, and have some small, very hard seeds. |
 | | Grape farming is a year-round commitment and includes the practices of pruning, irrigation, fertilization, and pest control. |
 | | During this time, the moisture content of the grape is reduced from 75% to under 15% and the color of the fruit changes to a brownish purple. |
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