Multiwalled carbon nanotubes were used to modify the surface of a glassy carbon electrode to enhance its electroactivity. Nafion served to immobilise the carbon nanotubes on the electrode surface. The modified electrode was used to develop an analytical method for the analysis of ascorbic acid (AA) by square-wave voltammetry (SWV). The oxidation of ascorbic acid at the modified glassy carbon el...

OBJECTIVE Hypercholesterolemia is a major risk factor for coronary artery disease. Therapeutic lifestyle changes include dietary modifications such as inclusion of phytosterols, which effectively lowers low-density lipoprotein (LDL) cholesterol in margarines and other fats. Their effectiveness in nonfat moieties is not yet established. The aim of this study was to examine if phytosterols alter ...

Vacuolar pyrophosphatase (V-PPase) from juice cells of 3 citrus varieties (differing in their vacuolar pH) were partially characterized using purified tonoplast vesicles. Total V-PPase activity was highest in vesicle samples from sweet limes with vacuolar pH of 5.0, while samples from acid limes (with lowest vacuolar pH of 2.0) had the minimal total V-PPase activity. Samples from 'Valencia' ora...

In this study palladium-nickel (Pd-Ni) nanoparticles supported on carbon and cerium oxide (Pd-Ni/AC-CeO2) were synthesized by a transfer phase method characterized scanning electronic microscopy (SEM), X-ray diffraction (XRD), energy-dispersive spectroscopy (EDX). The XRD SEM data concluded the presence of alloy formation between Pd Ni. particles used as an adsorbent for removal azo dye acid or...

Objective—Hypercholesterolemia is a major risk factor for coronary artery disease. Therapeutic lifestyle changes include dietary modifications such as inclusion of phytosterols, which effectively lowers low-density lipoprotein (LDL) cholesterol in margarines and other fats. Their effectiveness in nonfat moieties is not yet established. The aim of this study was to examine if phytosterols alter ...

Orange inner leaves/heads is a qualitative trait in Chinese cabbage that is controlled by a single recessive gene. Orange head Chinese cabbage contain more carotenoids than its white head counterpart; hence, this trait is of interest to both researchers and consumers. In this study, we selected the orange head Chinese cabbage line 07A163 and the white head Chinese cabbage line Chiifu as test ma...