ANNATTO EXTRACT SOLVENT-EXTRACTED NORBIXIN)-胭脂树橙提取物降红木素6号溶剂油萃取).pdfVIP

ANNATTO EXTRACT (SOLVENT-EXTRACTED NORBIXIN) (TENTATIVE) Prepared at the 61st JECFA (2003) and published in FNP 52 Add 11 (2003). The previous specifications for annatto extracts (solvent-extracted) prepared at the 46th JECFA (1996), published in FNP 52 Add 4 (1996) have been replaced by these and separate specifications for “Annatto extract (solvent-extracted bixin)”. A temporary ADI of 0 – 0.4 mg/kg bw was established at the 61st JECFA (2003). Information required on chemical characterisation of the non-pigment component of commercial products SYNONYMS L. Orange, CI (1975) 75120 (Natural Orange 4), INS 160b DEFINITION Seeds from the annatto tree (Bixa orellana L.) are washed with solvent to dissolve pigment. The extract is filtered to remove insoluble material. Subsequent processing involves removal of fats and waxes, solvent removal, crystallisation and drying. Solvents used can be one or more of: hexane, acetone, ethanol, (alkaline) methanol, isopropanol, ethyl acetate. Aqueous alkali is added to the resultant powder, which is then heated to hydrolyse the pigment and cooled. The aqueous solution is filtered, and acidified to precipitate the norbixin. The precipitate is filtered, washed, dried and milled, to give a granular powder. Thermal degradation products may also be present as a result of processing. The major colouring principal is cis