The concept of color in chemistry can take us back to when the separation of color-based
natural products, dyes, and other chemical compounds led to the technique called …

Antioxidants are a group of healthy substances which are useful to human health because of
their antihistaminic, anticancer, anti-inflammatory activity and inhibitory effect on the …

We report on a paper-based 2, 2-diphenyl-1-(2, 4, 6-trinitrophenyl) hydrazyl (DPPH) assay
for a simple, inexpensive, low reagent and sample consumption and high throughput …

Microfluidic paper-based analytical devices (µPADs) have attracted much attention over the
past decade because they offer clinicians the ability to deliver point-of-care testing and …

Equipment‐free paper‐based devices with quantitative readout have gained considerable
interests in recent years, due to the features of remarkable cheapness, prominent portability …

We report the first use of a paper-based device as a simple, low-cost and rapid detection
platform for simultaneous determination of antioxidant activity and total phenolic content in …

A simple paper-based analytical device (PAD) has been developed to rapidly detect
formaldehyde (FA) in food samples. The analysis was based on sulfite assay where FA …

The evaluation of Total Antioxidant Capacity (TAC), namely the complete pattern of
antioxidant species in a complex medium, is of major interest in many fields ranging from …

We report the first use of iron oxide magnetic nanoparticles (Fe 3 O 4 MNPs) as a novel,
alternative, simple and reliable agents for colorimetric measurement of radical scavenging …

In this work, a low-cost, disposable, and portable lab-on-paper device is proposed to
simultaneously quantify total polyphenol content (TPC) and antioxidant capacity (AOC) in 15 …