A simple and reliable method for determining anthocyanins in blood orange juices [Sicily]
1994
Rapisarda, P. (Istituto Sperimentale per l'Agrumicoltura, Acireale (Italy)) | Fallico, B. | Izzo, R. | Maccarone, E. (Catania Univ. (Italy). Istituto di Chimica Agraria)
إنجليزي. The paper reports a spectrophotometric methodology to determine the anthocyanin content in blood orange juices. The criterion of difference of absorbances at 510 nm in two aqueous solutions (pH 1 and pH 4.5) revealed the real concentration of free anthocyanins, using an absorption coefficient obtained from the purest cyanidin-3-glucoside standard. The quantity of pigments is expressed as concentration of cyanidin-3-glucoside, the most important anthocyanin in blood orange juices. The method was applied to fresh and concentrated processed juices and was controlled by HPLC anthocyanin analysis in the same juices
اظهر المزيد [+] اقل [-]إيطالي. [L'articolo riferisce di un metodo spettrofotometrico per determinare il contenuto di antiocianina nel succo di arance rosse. Il criterio della differenza delle assorbanze a 510 nm in due soluzioni acquose (pH 1 e pH 4.5) ha rivelato la reale concentrazione di antocianine libere, tramite l'uso di un coefficiente ottenuto dallo standard puro di cianidina-3-glucoside. La quantita' di pigmento e' espressa come concentrazione di cianidina-3-glucoside, l'antocianina piu' importante nel succo delle arance rosse. Il metodo e' stato applicato a succhi freschi e concentrati ed e' stato controllato, tramite analisi HPLC degli antociani, negli stessi succhi]
اظهر المزيد [+] اقل [-]الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)
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