Sensitive colorimetric detection of ascorbic acid based on seed mediated growth of sodium alginate reduced/stabilized gold nanoparticles

被引：33

作者：

Jayeoye, Titilope John ^{[1
,2
,3
,4
]}

Sirimahachai, Uraiwan ^{[1
,2
]}

Rujiralai, Thitima ^{[1
,2
,3
]}

机构：

[1] Prince Songkla Univ, Fac Sci, Ctr Excellence Innovat Chem, Hat Yai 90112, Songkhla, Thailand

[2] Prince Songkla Univ, Fac Sci, Div Phys Sci, Hat Yai 90112, Songkhla, Thailand

[3] Prince Songkla Univ, Fac Sci & Technol, Analyt Chem & Environm Res Unit, Pattani 94000, Thailand

[4] Alex Ekwueme Fed Univ, Dept Chem Biochem Mol Biol, Abakaliki, Ebonyi State, Nigeria

来源：

CARBOHYDRATE POLYMERS | 2021年 / 255卷

关键词：

Alginate; Nanoparticles; Ascorbic acid; Colorimetry; Vitamin C; Fruit juice; SILVER NANOPARTICLES; GREEN SYNTHESIS; CROSS-LINKING; ANTIBACTERIAL; DOPAMINE; SENSOR;

D O I：

10.1016/j.carbpol.2020.117376

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A sensitive detection strategy for ascorbic acid (AA), using sodium alginate reduced/stabilized gold nanoparticles (SA-AuNPs) as the optical probe, is reported. The SA-AuNPs were prepared by mixing gold salt and SA under stirring for 2 h at room temperature, without any further steps. The mixture was aged at 4 degrees C overnight, after which a faint-purple colloidal solution of SA-AuNPs was obtained. Characterization shows that the synthesis is incapable of reducing all Au3+ to Au degrees, but rather to mixture of Au degrees/Au+. The addition of AA to the SA-AuNPs probe reduced completely all Au+ to new AuNPs which were deposited on the pre-formed SA-AuNPs seed, leading to size increment and absorption spectra enhancement. The assay exhibited a good linearity between 12.5 and 150.0 mu M AA and low limit of quantification of 11.2 mu M. It was further used for AA quantitation in vitamin C injection and fruit juice with satisfactory accuracy and precision.

引用

页数：9

共 44 条

[1]

[Anonymous], 1996, Validation of Analytical Procedures: Text and Methodology, ICH Harmonised Tripartide Guideline, P1

[2] Development of a novel nanoprobe from alginate functionlized gold nanoparticles and 3-(dansylamino) phenylboronic acid for glucose detection and enhanced 4-nitrophenol reduction [J].