Gold nanoparticles (AuNPs) are useful nanomaterials as transducers for colorimetric
sensors because of their high extinction coefficient and ability to change color depending on …

Localized surface plasmon resonance (LSPR) is an optical phenomenon produced by an
incident light's impact on the conductive nanoparticles smaller than the light wavelength …

Abstract Evaluation of total antioxidant capacity (TAC) in fruits is essential for dietary
guidance and health monitoring. Here, we have exploited light-response carbon dots (CDs) …

Herein, we propose a sensitive fluorescent assay for organophosphorus pesticides (OPs)
detection based on a novel strategy of activating the CRISPR-Cas12a system. Specifically …

The convenient and effective detection of toxins is urgently demanded for food security and
human health. Herein, based on the catalytic activity of mimetic peroxidase from the Cu 2 …

A total antioxidant capacity (TAC) assay plays an essential role in evaluating antioxidant
behaviors. It mainly involves examining the dosages of antioxidants such as ascorbic acid …

Abstract MnO 2 nanosheets (MnO 2 NSs) were prepared and used as both oxidant of 3, 3′,
5, 5′-tetramethylbenzidine (TMB) and recognizer of UA, a simple colorimetric approach for …

Hypoxanthine (Hx) has been considered an essential indicator for aquatic products'
freshness, especially in the early stage of spoilage. It could generate hydrogen peroxide (H …

Glutathione (GSH) is one of the important substances to maintain the redox balance in vivo,
accurate monitoring of its changes is conducive to the early diagnosis and treatment of …

An enzyme-free colorimetric method for sensitive detection of uric acid (UA) was
established, which was achieved by inhibiting the etching of gold nanorods (AuNRs). The …