Unidad de Hortofruticultura, Centro de Investigación y Tecnología Agroalimentaria de Aragón (CITA), Avda. Montañana 930, 50059 Zaragoza, Spain; Instituto Agroalimentario de Aragón - IA2 (CITA-Universidad de Zaragoza), Zaragoza, Spain.
Unidad de Producción y Sanidad Animal, Centro de Investigación y Tecnología Agroalimentaria de Aragón, Avda. Montañana 930, 50059 Zaragoza, Spain; Instituto Agroalimentario de Aragón - IA2 (CITA-Universidad de Zaragoza), Zaragoza, Spain.
Food Chem. 2021 Oct 15;359:129864. doi: 10.1016/j.foodchem.2021.129864. Epub 2021 Apr 20.
Lettuce is the most consumed leafy vegetable though the most popular varieties have a low nutritional value. Our objective was to accurately quantify vitamin C and anthocyanins in wild relatives, and commercial and traditional varieties. Wild species and traditional varieties contained more total ascorbic acid (TAA) than commercial varieties (21% and 8%, respectively). In contrast, commercial varieties had significantly higher content of anthocyanins than traditional varieties and wild species (6 and 8 times more, respectively). TAA was significantly higher in green than in red lettuces (18%). TAA was also significantly higher in the leaves of two wild species than in stems. Cyanidin 3-O-(6'-O-malonylglucoside) was the most abundant anthocyanin (97%), present in most samples. The rankings of accessions by vitamin C and anthocyanin contents can be useful for consumers worried about the impacts of food on their wellbeing and for breeders aiming to improve lettuce by biofortification with health-promoting compounds.
生菜是最常食用的叶菜，但最受欢迎的品种营养价值较低。我们的目的是准确量化野生近缘种、商业品种和传统品种中的维生素 C 和花青素。野生种和传统品种的总抗坏血酸（TAA）含量高于商业品种（分别为 21%和 8%）。相比之下，商业品种的花青素含量明显高于传统品种和野生种（分别高 6 倍和 8 倍）。绿色生菜中的 TAA 含量明显高于红色生菜（18%）。在两种野生种中，TAA 也明显高于茎部。矢车菊素 3-O-（6'-O-丙二酰基葡萄糖苷）是最丰富的花青素（97%），存在于大多数样品中。根据维生素 C 和花青素含量对品种进行排名，对于那些担心食物对健康影响的消费者以及那些希望通过生物强化来提高生菜健康促进化合物含量的种植者来说，可能会很有用。
