Microelement Research Center, Huazhong Agricultural University, Wuhan, China.
Enshi Cowboy Blueberry Technology Co., Ltd, Jianshi, Hubei, China.
J Sci Food Agric. 2018 Sep;98(12):4700-4706. doi: 10.1002/jsfa.9004. Epub 2018 May 7.
Foliar spraying of selenium (Se) has increasingly been applied to improve Se concentrations in grain crops, although little information is available about the properties of Se-enriched fruits. In the present study, selenium distribution in blueberry and Se effect on blueberry quality were investigated by foliar spraying selenite or selenate (200 g ha ) on two blueberry cultivars (Bluecrop and Northland) during the young fruit or coloring stage.
Selenium concentration in blueberry was mainly affected by cultivar and spray stage relative to the Se source. Northland was 1.3- to 1.5-fold higher than Bluecrop with respect to Se enrichment. Se treatment at the young fruit stage induced a 1.5- to 2.3-fold increase compared to that at the coloring stage with respect to the Se concentration of blueberry. Additionally, selenium was mainly stored in pomace, with an accumulative distribution ratio of 89.3-94.9%. The proportion of organic Se reached up to 77.0% in blueberry. Furthermore, the foliar application of Se significantly increased the anthocyanin concentration and the intact fruit rate of blueberry.
Se-enriched blueberry can be used as a 'functional food'. Because Se was mainly accumulated in the pomace, the consumption of blueberries as fresh fruit, dried fruit and jam can improve the efficiency of Se supplement. © 2018 Society of Chemical Industry.
叶面喷施硒（Se）已越来越多地应用于提高谷物作物中的硒浓度，但有关富硒水果特性的信息却很少。本研究通过在蓝莓幼果期或着色期叶面喷施亚硒酸钠或硒酸钠（200 g/ha），研究了硒在蓝莓中的分布以及硒对蓝莓品质的影响。
蓝莓中的硒浓度主要受品种和喷药阶段相对于硒源的影响。与富硒相比，北陆品种的硒富集程度是蓝美品种的 1.3-1.5 倍。与着色期相比，幼果期处理可使蓝莓的硒浓度提高 1.5-2.3 倍。此外，硒主要储存在果渣中，累积分布比为 89.3-94.9%。蓝莓中有机硒的比例高达 77.0%。此外，叶面施硒可显著提高蓝莓的花青素浓度和完整果实率。
富硒蓝莓可作为“功能食品”。由于硒主要积累在果渣中，因此食用蓝莓鲜果、干果和果酱可以提高硒补充的效率。 © 2018 英国化学学会。
