Environmental Research and Innovation Dpt., Luxembourg Institute of Science and Technology, Belvaux, Luxembourg.
Environmental Research and Innovation Dpt., Luxembourg Institute of Science and Technology, Belvaux, Luxembourg; Population Health Dpt., Luxembourg Institute of Health, Strassen, Luxembourg.
Food Chem. 2017 Aug 15;229:304-311. doi: 10.1016/j.foodchem.2017.02.074. Epub 2017 Feb 20.
Phytoene and phytofluene are major abundant dietary carotenoids largely ignored in the context of agro-food and health. The bioaccessibility of phytoene and phytofluene in tomato, carrot, blood orange (sanguinello cultivar), and apricot juices was analysed following simulated gastro-intestinal digestion with coffee cream as a lipid source, and compared with that of other main carotenoids from these matrices. The bioaccessibility of phytoene and phytofluene, and also total carotenoid bioaccessibility, followed the order: sanguinello>apricot>tomato>carrot. Phytoene was consistently the carotenoid with the highest bioaccessibility, up to 97%, generally followed by phytofluene. The higher bioaccessibility of these carotenoids could mainly be due to their marked difference in chemical structure and matrix distribution. For most juices, cis-isomers presented a higher bioaccessibility than their all-trans counterparts (P<0.05). The dietary source that provided highest amounts of potentially absorbable phytoene/phytofluene was by far tomato juice (5mg/250mL juice).
番茄红素和玉米黄质是主要的丰富的膳食类胡萝卜素，在农业食品和健康方面很大程度上被忽视了。采用咖啡奶油作为脂质来源，模拟胃肠消化，分析了番茄、胡萝卜、血橙（桑吉内洛品种）和杏汁中番茄红素和玉米黄质的生物可及性，并与这些基质中其他主要类胡萝卜素的生物可及性进行了比较。番茄红素和玉米黄质以及总类胡萝卜素的生物可及性顺序为：桑吉内洛血橙>杏汁>番茄>胡萝卜。番茄红素通常是生物可及性最高的类胡萝卜素，高达 97%，其次是玉米黄质。这些类胡萝卜素具有较高的生物可及性，主要归因于它们在化学结构和基质分布上的显著差异。对于大多数果汁，顺式异构体的生物可及性高于全反式异构体（P<0.05）。迄今为止，提供最多潜在可吸收番茄红素/玉米黄质的饮食来源是番茄汁（250 毫升番茄汁中 5 毫克）。
