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The production of high quality concentrated blood orange juice according to a new integrated membrane process, alternative to thermal evaporation, was evaluated in terms of preservation of the total antioxidant activity and of the bioactive antioxidant components of the juice (ascorbic acid, anthocyanins, hydroxycinnamic acids, flavanones). The process was based on the initial clarification of freshly...
Direct chiral separation of N-aminoethylamino acids has been performed for the first time by gas chromatographic (GC) analysis with a Chirasil-Val column, after derivatisation with trifluoroacetic anhydride in dichloromethane, which led to the corresponding piperazin-2-one derivatives, as identified by NMR and GC/MS analysis. The method was used for the analysis of the enantiomeric excess of chiral...
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