Differentiation of lemon and mandarin juices from their second pressure liquids by ion chromatography
2000
Leuzzi, U. | Panzera, V. (Messina Univ. (Italy). Dipartimento di Chimica Organica e Biologica) | Licandro, G. (Citrus Vita, Giammoro, Messina (Italy))
Английский. Lemon and mandarin juices and their corresponding second pressure liquids were analysed by ion chromatography equipped with both UV and conductivity detectors. Inorganic (chloride, sulphate, phosphate) and organic (galacturonate, malate, citrate, isocitrate) anions were determined simultaneously using this technique. An unidentified peak at 210 nm, which was previously observed in second pressure concentrates of orange but not in their juices, was present in juices and second pressure liquids of lemon and mandarin. However, the peak-areas of the juices were remarkably lower, thus allowing the juices to be distinguished from their second pressure extracts
Показать больше [+] Меньше [-]итальянский. Mediante cromatografia ionica con eluizione in gradiente e rivelazione contemporanea, sia per conducibilita', sia per UV, sono stati analizzati e messi a confronto i succhi di limone e mandarino ed i corrispondenti liquidi di seconda pressione. In una singola analisi sono stati determinati gli anioni inorganici (cloruri, fosfati, solfati) e gli anioni organici (galatturonato, malato, citrato, isocitrato). Un picco non identificato, rivelato in UV a 210 nm e gia' riscontrato per l'arancia soltanto nei liquidi di seconda pressione, per limone e mandarino e', invece, presente sia nei torchiati, sia nei corrispondenti succhi. Tuttavia, le aree del picco relative a questi ultimi sono notevolmente inferiori, permettendo comunque una differenziazione tra i succhi ed i liquidi di seconda pressione allo studio
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