Abstract The aim of the study was to assess the effectiveness of the electrostatic separation on fractionation and deconstruction of the grape stalks lignocellulosic biomass. After the measurements of their physical properties, the eight fractions obtained were extracted with hot water and then with hot 2% sulphuric acid. In aqueous extracts, the concentrations of glucose and fructose of samples collected in the jars under the positive electrode were as high as 13.5 and 11.6 g/100 g d.w., respectively. As for acid hydrolysis, the concentration of furfural and HMF were 1996–2600 and 144–291 mg/kg d.w., respectively. The results showed the opportunity of using grape stalks as a source of fermentable sugars, as well as a potential source of furanic compounds. This technique can represent a new and affordable method of lignocellulosic biomass pre-treatment which can easily be integrated into a biorefinery to favour partial fractionation and better exposure of the fractions to a subsequent enzymatic or chemical attack.

中文翻译：

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葡萄茎：首次尝试通过静电分离解开其纤维

摘要 本研究的目的是评估静电分离对葡萄茎木质纤维素生物质的分馏和解构的有效性。在测量了它们的物理性质后，将获得的八种馏分用热水萃取，然后用热的 2% 硫酸萃取。在水提取物中，收集在正极下方罐子中的样品的葡萄糖和果糖浓度分别高达 13.5 和 11.6 g/100 g dw。至于酸水解，糠醛和 HMF 的浓度分别为 1996-2600 和 144-291 mg/kg dw。结果表明有机会使用葡萄茎作为可发酵糖的来源，以及呋喃化合物的潜在来源。