UTILIZATION OF ORANGE BY-PRODUCTS - ORANGE PEEL CAROTENOIDS
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ARAVANTINOSZAFIRIS, G
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TZIA, C
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THOMOPOULOS, CD
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OREOPOULOU, V
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Carotenoids were extracted from fresh orange peel with various solvents. Acetone was the most efficient of the solvents tested. Two successive extractions with acetone after an initial washing with either acetone or methanol were adequate to remove 89 % of the total carotenoids. The extracts were concentrated, the carotenoids transferred to hexane and a crude pigment concentrate was obtained by hexane evaporation. Water washings prior to acetone extraction eliminated the solvent-solvent transfer to hexane. The extraction residue was used for pectin recovery. Carotenoid removal from the peel did not affect the yield and quality of the pectin.
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