Unité des Plantes Aromatiques et Médicinales, Centre de Biotechnologie au Technopôle de Borj-Cédria (CBBC), Hammam-lif, Tunisia.
J Sci Food Agric. 2011 Jan 15;91(1):142-51. doi: 10.1002/jsfa.4164. Epub 2010 Sep 22.
Juices from four Citrus species of Tunisia were investigated mainly for quality parameters and antioxidant capacity.
Citrus reticulata (mandarin) juice had the highest content of total flavonoids (85.33 mg CE L(-1)). The latter also occurred in high quantity (82.01 mg CE L(-1)) in Citrus lemon (lemon) juice which was also marked by its richness in total aroma (70.16 µg mL(-1)) and in total fatty acids (48.10 µg mL(-1)). Mandarin and lemon juices had the highest antioxidant activity, as determined b the β-carotene bleaching assay (26.67% and 22.67%, respectively). Citrus aurantium (bitter orange) juice was characterised by the highest content of total polyphenols (784.67 mg GAE L(-1)) and by the greatest inhibition of DPPH (96.10%). Citrus sinensis (blood orange) juice was only marked by the high quantity of ascorbic acid (36.90 mg mL(-1)). GC/MS analysis of juice aroma showed the predominance of limonene (48.85-69.59%) in mandarin and in bitter and blood oranges, but of camphene (89.05%) in lemon. GC analysis of juice fatty acids revealed their richness in oleic acid (23.13-39.52%). HPLC analysis of juice phenolics indicated the predominance of phenolic acids (73.13-86.40%).
The Citrus species used in this study were considered valuable varieties from the point of view of antioxidant capacity and nutrition.
对突尼斯的四种柑橘属水果的果汁进行了主要的质量参数和抗氧化能力的研究。
红橘（蜜桔）汁的总类黄酮含量最高（85.33mgCEL(-1)）。柠檬（柠檬）汁中的类黄酮含量也很高（82.01mgCEL(-1)），其总香气含量（70.16µgmL(-1)）和总脂肪酸含量（48.10µgmL(-1)）也很高。通过β-胡萝卜素漂白试验测定，蜜桔和柠檬汁具有最高的抗氧化活性，分别为 26.67%和 22.67%。苦橙汁的总多酚含量最高（784.67mgGAEL(-1)），对 DPPH 的抑制作用最大（96.10%）。血橙汁仅以高含量的抗坏血酸（36.90mgmL(-1)）为特征。果汁香气的 GC/MS 分析表明，在蜜桔和苦橙、血橙中，柠檬烯（48.85-69.59%）占主导地位，但在柠檬中，莰烯（89.05%）占主导地位。果汁脂肪酸的 GC 分析表明，它们富含油酸（23.13-39.52%）。果汁酚类物质的 HPLC 分析表明，酚酸（73.13-86.40%）占主导地位。
从抗氧化能力和营养角度来看，本研究中使用的柑橘属品种被认为是有价值的品种。
