A ninety-six well plate as headspaces with moist starch indicator paper as a cover for the determination of ascorbic acid by iodate oxidation and formation of volatile iodine

Nawalohakul, Thichaphat; Charoenjiraroj, Pannarat; Chantiwas, Rattikan; Wilairat, Prapin; Praditweangkum, Wiboon

doi:10.1039/d1ay02050a

Cited by 3 publications

(1 citation statement)

References 40 publications

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“…Ascorbic acid (AA) is a micronutrient that can stabilize the oxidative stress in human body. [34,35] AA can be oxidized by iodate to generate iodide [36] that can be detected by this paper-based sensor. Based on this principle, we can determine AA in food and pharmaceutical products.…”

Section: Sensing Performance In Real Samplesmentioning

confidence: 99%

Point‐of‐Care Paper‐Based Sensors through Surface Etching of Gold Nanostars

Xianyu

2023

Adv Materials Technologies

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Paper‐based analytical devices as a low‐cost and point‐of‐care sensing platform have attracted widespread research interest. However, the device fabrication and signal readout remain a challenge for their real‐world applications. Herein, a technically simple paper‐based sensor is developed by taking advantage of the easily accessible paper and the plasmonic property of gold nanomaterials. The sensing mechanism relies on the iodide‐mediated surface etching of gold nanostars that induces a color change from blue to red of the paper strip. The versatility of the paper substrate in size, shape, and materials allows for the facile immobilization of gold nanostars by a simple immersing method, which is easy to operate and free from specialized skills and equipment. In addition, the readout of the paper strip can be conveniently visualized by the naked eye or through a smartphone. This paper‐based sensor advantages in low cost, light weight, easy handling, and disposability that holds great promise as a point‐of‐care detection platform in resource‐constrained settings.

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Section: Sensing Performance In Real Samplesmentioning

confidence: 99%