Henan University of Technology

About: Henan University of Technology is a education organization based out in Zhengzhou, China. It is known for research contribution in the topics: Catalysis & Starch. The organization has 7648 authors who have published 6503 publications receiving 73067 citations. The organization is also known as: Hénán Gōngyè Dàxué.

A simple and sensitive electrochemical detection of furazolidone based on an Au nanoparticle functionalized graphene modified electrode

Abstract: A new sensor using a glassy carbon electrode modified with graphene and Au nanoparticles (Gr/Au/GCE) was designed to investigate the electrochemical behavior of furazolidone (FZD). The morphology and nature of the modified electrode were characterized by UV-vis spectroscopy, transmission electron microscopy (TEM) and electrochemical impedance spectroscopy (EIS). FZD was reduced on the Gr/Au/GCE at lower potentials with a higher peak current, compared to the bare GCE, through an irreversible process. These results arose from the synergistic effect of the deposited Gr/Au suspension on the GCE. For this article, several parameters, such as pH, scan rate, and the amount of modifier had been studied. Under optimal conditions, amperometry (AMP) and differential pulse stripping voltammetry (DPSV) were applied to the determination of FZD. Linear dynamic ranges of 1–674 μmol L−1, and 0.02–0.14 μmol L−1 and 0.14–400 μmol L−1 with detection limits of 0.64 μmol L−1 and 0.0126 μmol L−1 were obtained using AMP and DPSV, respectively. The sensor was also successfully applied to the determination of FZD in real samples, obtaining satisfactory recoveries.

Oxidative stability of sunflower oil flavored by essential oil from Coriandrum sativum L. during accelerated storage

Abstract: The aim of the work was to assess the oxidative stability of sunflower oil flavored by the essential oils extracted of Coriandrum sativum (coriander, CEO) during the accelerated storage of 24 days. In the study, CEO was extracted by Soxhlet apparatus, and its chemical composition was analyzed by gas chromatography with flame ionization detector (GC-FID) and gas chromatography and mass spectrometry (GC-MS), and then, the evaluation for antioxidant effect in vitro displayed that CEO possessed markedly antioxidant potential. Furthermore, after the addition of CEO, acid value (AV), peroxide value (PV), iodine value (IV), p-anisidine value (AnV), thiobarbituric acid reactive substances (TBARS), free fatty acid (FFA), total polar compounds (TPC), tocopherols (TOC) in sunflower oils during the accelerated storage were measured every 4 days, and the results herein exhibited the addition of CEO at 1200 ppm could not only increase the oxidative stability of the sunflower oils, but also exert synergistic effect with TBHQ. Meanwhile, the values of K232 and K268 and fatty acid composition were investigated. The sensory evaluation of the oil samples revealed that the addition of CEO at 1200 ppm could increase aroma flavor and consumers' acceptability, so that it could be developed as convenient condiment.