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Nano-gold capillary immunochromatographic assay for parvalbumin.
Du, Shuyuan; Lin, Hong; Sui, Jianxin; Wang, Xiudan; Cao, Limin.
Afiliación
  • Du S; Food Safety Laboratory, Ocean University of China, Qingdao, 266003, China.
Anal Bioanal Chem ; 406(26): 6637-46, 2014 Oct.
Article en En | MEDLINE | ID: mdl-25168115
ABSTRACT
A novel non-instrumental bioanalysis based on colloidal-gold immunochromatography in a modified glass capillary was developed and named capillary immunochromatographic assay (CICA). In this report, glass capillary was proposed as a support in immunochromatographic assay because of its excellent characteristics. Goat anti-rabbit IgG and parvalbumin (PV) were immobilized on the inner wall of the glass capillary as control zone and test zone, respectively. The CICA was constructed, and main variables for the performance were optimized. Using an important allergen of fish products (parvalbumin, PV) as the target, the analytical efficiency of the developed technique was investigated and the visual detection limit (VDL) and semi-quantitative limit of detection (LOD) were estimated to be 70 ng mL(-1) and 40 ng mL(-1), respectively. The coefficient of variation (CV) for the intra-assay and inter-assay was calculated for the PV concentration of 50 ng mL(-1), and the entire operation, including sample preparation, was consistently performed in 30 min. The developed technique was implemented and validated with different foodstuffs, including Scophthalmus maximus (Linnaeus), surimi products, and livestock, confirming sufficient accuracy and precision of results and verifying the method to be efficacious. These results enabled us to propose CICA as a new and promising technique for simple, rapid, and on-site screening of PV in biological samples.
Asunto(s)

Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Asunto principal: Parvalbúminas / Alérgenos / Cromatografía de Afinidad / Nanopartículas del Metal / Anticuerpos Inmovilizados / Oro Límite: Animals Idioma: En Revista: Anal Bioanal Chem Año: 2014 Tipo del documento: Article País de afiliación: China

Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Asunto principal: Parvalbúminas / Alérgenos / Cromatografía de Afinidad / Nanopartículas del Metal / Anticuerpos Inmovilizados / Oro Límite: Animals Idioma: En Revista: Anal Bioanal Chem Año: 2014 Tipo del documento: Article País de afiliación: China