Simple and rapid detection of free 3-monochloropropane-1,2-diol based on cysteine modified silver nanoparticles

Determination of chloropropanol with an imprinted electrochemical sensor based on multi-walled carbon nanotubes/metal–organic framework composites

“…1,2 Studies have shown that a long-term intake of 3-MCPD at a low content may lower the sperm count, disturb the balance of sex hormones in the body, and even may be carcinogenic if exceeding certain amounts. 3,4 Recently, some methods have been developed to detect 3-MCPD, such as gas chromatography-mass spectrometry (GC-MS) 5 and gas chromatography (GC). In most studies, due to the low molecular weight of 3-MCPD, the observed limit values are somewhat poor.…”

Chiral induction in a novel self-assembled supramolecular system composed of α-cyclodextrin porous liquids, chiral silver nanoparticles and planar conjugated molecules

“…35 In addition, the ratio of the area of the vibration peak at 1618 cm À1 (CQO stretching vibration) to the area of the vibration peak (NH bending vibration) at 1384 cm À1 in the infrared absorption spectrum of Azo-Ag NPs was significantly smaller than that of L-cys-Ag NPs, which indicates that the azophenyl group was successfully modified on the surface of the silver nanoparticles. 36 As shown in Fig. 2 32 What is more, the calculated crystal size of Azo-Ag NPs (30.64 nm) is larger than that of L-cys-Ag NPs (27.73 nm) according to the Scherrer equation, suggesting that the introduction of the azophenyl group did not damage the crystalline structure.…”

Bioinspired Nanomodification Strategies: Moving from Chemical-Based Agrosystems to Sustainable Agriculture

“…Several researches revealed that cysteine could perform as a reducing and capping agent to synthesize AgNPs. 52 , 53 Similarly, it was reported that tryptophan and tyrosine possessed reducing and capping abilities to synthesize AgNPs. 54 Under alkaline conditions, the indole group of tryptophan and the phenolic group of tyrosine reduced Ag + to AgNPs, while the oxidized tryptophan and tyrosine bound on AgNPs surface to stabilize AgNPs, which was in agreement with Joshi et al ., who described that indole and carboxyl groups were responsible for binding tryptophan on AuNPs surface.…”