Development and validation of a HILIC-ELSD method for simultaneous analysis of non-substituted and acetylated xylo-oligosaccharides

Pu, Jianghua; Zhao, Xia; Xiao, Lin; Zhao, Haitao

doi:10.1016/j.jpba.2017.03.007

Cited by 16 publications

(2 citation statements)

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“…In particular, in AXOS analysis, it has been observed that the position of substituent arabinose affects the retention time, and that some of these AXOS can elute simultaneously, which complicates their identification [137]. Furthermore, according to some scholars, HPAEC-PAD could perhaps lead to epimerization and OS degradation when an aqueous solution with a high concentration of sodium hydroxide is used as the mobile phase [138]. Several studies have also tried to establish a method for OS structural identification by relying on liquid chromatography, coupled with different detectors.…”

Section: Characterization Of Obtained (A)xosmentioning

confidence: 99%

“…One limitation of MS is that it alone cannot discriminate between hexose isomers or pentose isomers, since they all have the same molecular formula and therefore the same mass [145]. Pu et al proposed another method to characterize XOS, based on hydrophilic interaction liquid chromatography with evaporative light scattering detection (HILIC-ELSD), without the need for derivatization [138]. The coupling of HILIC with ELSD and with the MSn detector can give important structural information, such as the presence of acetyl groups, and allows the characterization and quantification of many OS with different structures; however, isomeric structures tend to coelute, leading to overlapping peaks [146].…”

Section: Characterization Of Obtained (A)xosmentioning

confidence: 99%

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Potential Valorization of Hazelnut Shells through Extraction, Purification and Structural Characterization of Prebiotic Compounds: A Critical Review

Fuso

Risso²,

Rosso³

et al. 2021

Foods

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Hazelnuts are one of the most widely consumed nuts, but their production creates large quantities of by-products, especially shells, that could be upcycled into much more valuable products. Recent studies have shown that hazelnut shell hemicellulose is particularly rich in compounds that are potential precursors of xylooligosaccharides and arabino-xylooligosaccharides ((A)XOS), previously defined as emerging prebiotics very beneficial for human health. The production of these compounds on an industrial scale-up could have big consequences on the functional foods market. However, to produce (A)XOS from a lignocellulosic biomass, such as hazelnut shell, is not easy. Many methods for the extraction and the purification of these prebiotics have been developed, but they all have different efficiencies and consequences, including on the chemical structure of the obtained (A)XOS. The latter, in turn, is strongly correlated to the nutritional effects they have on health, which is why the optimization of the structural characterization process is also necessary. Therefore, this review aims to summarize the progress made by research in this field, so as to contribute to the exploitation of hazelnut waste streams through a circular economy approach, increasing the value of this biomass through the production of new functional ingredients.

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Section: Characterization Of Obtained (A)xosmentioning

confidence: 99%