An ink jet ink includes at least a coloring material. The coloring material is at least one of C.I. Food Black 2 and C.I. Direct Black 195, and a compound represented by the following general formula (I) or a salt thereof ##STR00001##

 
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> Press for making patties and method of operation

> Chitosan-xanthan based polyionic hydrogels for stabilization and controlled release of vitamins

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