Phase‐Transfer Strategy toward High‐Throughput Chromatographic Detection of Pentosan Content in Wheat‐Derived Products

Abstract

This paper demonstrated a new approach for detecting pentosan content in wheat products enabled by phase‐transfer reaction technique. This approach was based on the phase‐transfer reaction of pentosans in wheat sample to furfural in an acidic medium. The hydrolysis reaction could be finished within 30 min at 90 °C, with a sulfuric acid concentration of 12.0 mol/L. The furfural generated from the hydrolysis of pentosan was then measured by headspace gas chromatography (HS‐GC) using a flame ionization detector (FID). The results showed that this method was precise (relative standard deviations (RSD)≤2.82 %) and accurate (relative differences (RD)≤6.49 % compared with the reference spectrophotometric method, the recoveries ranged from 98.1 to 102 %). Moreover, the developed approach is semi‐automated and efficient, which can be a good alternative method for the high‐throughput analysis of pentosan content in both laboratory and mill testing.

Extraction of pentosan from corn cob

“…Single-factor experiments [21,22,23] primarily considered the effects of three factors on the extraction rate of xylan: extraction temperature, extraction time, and liquid-to-solid ratio. The liquid-to-solid ratios were tested at ve levels: 10:1 mL/g, 25:1 mL/g, 50:1 mL/g, 75:1 mL/g, and 100:1 mL/g, under conditions of a water bath temperature of 40 ℃ and a water bath time of 120 min.…”

“…The extraction of valuable xylan[6] from corn cobs through water extraction methods [4,5]has been found to possess antioxidant, antibacterial, anti-in ammatory properties, and good biocompatibility [7], making it widely applicable in the elds of medicine, food, cosmetics, and materials science. The extraction of xylan from corn cobs using water extraction[8] and other methods [9] is not only of signi cant economic importance but also helps reduce the emission of agricultural waste and environmental pollution, achieving the recycling of resources and environmental protection. Therefore, in-depth research on the extraction methods and applications of xylan from corn cobs is of great theoretical and practical signi cance for promoting the sustainable utilization of biomass resources [10] and facilitating the resource utilization of agricultural waste [11].…”

Benzimidazolium Ionic‐Liquid‐Functionalized Star‐shaped Copolymer Stationary Phase for Capillary Gas Chromatography

“…Gas chromatography (GC) is an acknowledged technique in terms of rapid separation and analysis, and therefore widely used in petroleum, [1] chemical industry, [2] agriculture, [3] environmental protection [4] and medicine fields [5] . High‐performance stationary phase as the key factor in GC, which can be divided into linear polymers, [6] macrocyclic compounds, [7] ionic liquids, [8] metal‐organic frameworks (MOFs) [9] and covalent organic frameworks (COFs) [10] according to their molecular type at present, having a great influence on the separation efficiency.…”