Phytochemical FoodNetwork Research Group, Department of Crop Sciences, Tshwane University of Technology, Pretoria West, 0001, South Africa.
Queensland Alliance for Agriculture and Food Innovation, Center for Food Science and Nutrition, The University of Queensland, Australia.
Food Chem. 2019 Mar 1;275:85-94. doi: 10.1016/j.foodchem.2018.09.097. Epub 2018 Sep 17.
Antioxidant constituents such as carotenoids (capsanthin, phytoene, lutein, β-cryptoxanthin), polyphenols content (p-coumaric, ferulic, p-hydroxybenzoic, caffeic acid, sinapic acid, and quercetin-3-glucoside) and marketable yield were investigated in 11 sweet pepper cultivars grown under controlled temperature plastic tunnel and white shade net. Marketable yield was not affected by either of the environments, while the interaction between cultivar and growing environment significantly affected the accumulation of antioxidant constituents. The principal component analysis illustrated that controlled temperature plastic tunnel improved the accumulation of carotenoid components and ascorbic acid and vitamin C content in most cultivars. On the contrary, white shade nets favoured the accumulation of phenolic compounds and ORAC activity in most cultivars. A strong correlation was noted between phytoene and carotenoid components in this study (capsanthin r = 0.60; P < 0.001; lutein r = 0.75; P < 0.001; β-carotene r = 0.78; P < 0.001) while ORAC correlated with phenolic compounds. Based on this study, it is possible to refine the choice of environment and cultivar to enhance individual antioxidant constituent groups to improve health benefits for consumers.
在控温控湿塑料大棚和白色遮阳网两种环境下，研究了 11 个甜椒品种中抗氧化成分（类胡萝卜素[辣椒红、番茄红素、叶黄素、β-隐黄质]）、多酚含量（对香豆酸、阿魏酸、对羟基苯甲酸、咖啡酸、芥子酸和槲皮素-3-葡萄糖苷）和商品产量的变化。环境对商品产量没有影响，但品种和生长环境之间的相互作用显著影响了抗氧化成分的积累。主成分分析表明，控温控湿塑料大棚提高了大多数品种中类胡萝卜素成分和抗坏血酸及维生素 C 的含量。相反，白色遮阳网有利于大多数品种中酚类化合物和 ORAC 活性的积累。本研究中，phytoene 与类胡萝卜素成分之间存在很强的相关性（辣椒红 r=0.60；P<0.001；叶黄素 r=0.75；P<0.001；β-胡萝卜素 r=0.78；P<0.001），而 ORAC 与酚类化合物相关。基于这项研究，可以对环境和品种进行选择，以提高个别抗氧化成分的含量，从而提高对消费者的健康益处。
