Hydrothermal treatment is an environmentally friendly technology that allows the solubilisation of hemicellulosic oligosaccharides with potential for their use as prebiotics. The purpose of this study was to solubilize oligosaccharides and antioxidant compounds from chestnut shells by a hydrothermal processing. The highest content of oligosaccharides (18.3 g/L), with a relatively low level of monosaccharides (2.4 g/L) and degradation products (0.5 g/L) was obtained at 180 °C (severity of 3.08). In addition, the liquors presented a high content of phenolic and flavonoid compounds with good antioxidant properties. The GC-MS revealed that the most abundant phenolic compound was pyrogallol (13.2%). The molecular weight distribution of the solubilization products showed that a 26.5% presented an apparent Mw of 6077 g/mol and a 73.5% presented an apparent Mw of 586 g/mol with a high polydispersity index. MALDI-TOF, FTIR, and TGA analyses revealed structural information of these compounds and their thermal stability.

水热处理是一种环境友好的技术，它可使半纤维素低聚糖增溶，并有可能用作益生元。这项研究的目的是通过水热处理从栗子壳中溶解寡糖和抗氧化剂化合物。在180°C下获得最高含量的低聚糖（18.3 g / L），单糖（2.4 g / L）和降解产物（0.5 g / L）的含量相对较低（严重度为3.08）。此外，这些酒还具有高含量的酚和类黄酮化合物，并具有良好的抗氧化性能。GC-MS显示，最丰富的酚类化合物是邻苯三酚（13.2％）。增溶产物的分子量分布表明，有26.5％的表观Mw为6077g / mol，有73的表观Mw。5％表示表观Mw为586g / mol，具有高多分散指数。MALDI-TOF，FTIR和TGA分析揭示了这些化合物的结构信息及其热稳定性。