Wang Shiow Y, Bunce James A, Maas J L
Fruit Laboratory, Beltsville Agricultural Research Center, Agricultural Research Service, U. S. Department of Agriculture, Beltsville, Maryland 20705-2350, USA.
J Agric Food Chem. 2003 Jul 16;51(15):4315-20. doi: 10.1021/jf021172d.
The effects of elevated CO2 concentrations on the antioxidant capacity and flavonoid content in strawberry fruit (Fragaria x ananassa Duch.) were studied under field conditions. Increased CO(2) (300 and 600 micromol mol(-1) above ambient) concentrations resulted in increases in ascorbic acid (AsA), glutathione (GSH), and ratios of AsA to dehydroascorbic acid (DHAsA) and GSH to oxidized glutathione (GSSG), and a decrease in DHAsA in strawberry fruit. High anthocyanin and phenolic content were also found in fruit of CO(2) treated plants. Growing strawberry plants under CO(2) enrichment conditions significantly enhanced fruit p-coumaroylglucose, dihydroflavonol, quercetin 3-glucoside, quercetin 3-glucuronide, and kaempferol 3-glucoside contents, as well as cyanidin 3-glucoside, pelargonidin 3-glucoside, and pelargonidin 3-glucoside-succinate content. Fruit of strawberry plants grown in the CO(2) enrichment conditions also had high oxygen radical absorbance activity against ROO(), O(2)(-), H(2)O(2), OH(*), and (1)O(2) radicals.
在田间条件下研究了二氧化碳浓度升高对草莓果实（凤梨草莓）抗氧化能力和类黄酮含量的影响。二氧化碳浓度升高（比环境浓度高300和600微摩尔/摩尔）导致草莓果实中抗坏血酸（AsA）、谷胱甘肽（GSH）、AsA与脱氢抗坏血酸（DHAsA）的比率以及GSH与氧化型谷胱甘肽（GSSG）的比率增加，而DHAsA减少。在二氧化碳处理植株的果实中还发现了高花青素和酚类含量。在二氧化碳富集条件下种植草莓植株显著提高了果实对香豆酰葡萄糖、二氢黄酮醇、槲皮素3-葡萄糖苷、槲皮素3-葡萄糖醛酸苷和山奈酚3-葡萄糖苷的含量，以及矢车菊素3-葡萄糖苷、天竺葵素3-葡萄糖苷和天竺葵素3-葡萄糖苷-琥珀酸酯的含量。在二氧化碳富集条件下生长的草莓植株的果实对ROO()、O(2)(-)、H(2)O(2)、OH(*)和(1)O(2)自由基也具有高氧自由基吸收活性。
