食品科学2018，Vol.39Issue(8)：108-114,7.DOI:10.7506/spkx1002-6630-201808018
羟基氧化钴长余辉纳米探针用于食品中VC的检测
Detection of Vitamin C in Food Base on Cobalt Oxyhydroxide Persistent Luminescent (CoOOH-PLNP) Nanaoparticles
摘要
Abstract
Vitamin C is a small water-soluble molecule in vivo which can be directly involved in the redox reaction,with a variety of physiological activities. Herein, an ultra-bright triple-doped zinc gallogermanate nanostructure with favorable monodispersity and optically stable near infrared (NIR) luminescence whose surface was modified with cobalt oxyhydroxide (CoOOH) was synthesized by a surfactant-aided hydrothermal method in combination with short time calcination, and a nanoprobe for the detection of vitamin C was built based on the specific reaction of CoOOH and vitamin C. The nanoprobe used the ZGGO:Cr3+, Yb3+, Er3+persistent luminescence nanoparticles (PLNPs) as optical signal units and CoOOH as quencher, allowing the detection of vitamin C with high selectivity and sensitivity based on the inner filter effect (IFE). The results showed that CoOOH could effectively quench the luminescence of PLNPs. Vitamin C could restore the luminescence of PLNPs by reducing CoOOH, which displayed a good linear correlation with the content of vitamin C (R2= 0.993 15) and a detection limit (LOD) of 1.18 mg/kg. When applied to real samples of lemon, strawberry and kiwi fruit, this method gave results consistent with those from HPLC. In addition, the synthesized ZGGO:Cr3+, Yb3+, Er3+PLNPs had a long afterglow performance in the near infrared (NIR) region, and therefore could be applied to real-time monitoring and imaging of vitamin C in living cells and organisms without in situ excitation.关键词
长余辉纳米颗粒/纳米探针/羟基氧化钴/VCKey words
persistent luminescence nanoparticles (PLNPs)/nanoprobe/cobalt oxyhydroxide (CoOOH)/vitamin C分类
轻工纺织引用本文复制引用
刘瑶瑶,刘敬民,张咚咚,葛琨,方国臻,王硕..羟基氧化钴长余辉纳米探针用于食品中VC的检测[J].食品科学,2018,39(8):108-114,7.基金项目
"十二五"国家科技支撑计划项目(2012AA101602-1) （2012AA101602-1）
