Currently there is a growing interest from the food industry in obtaining inulin for its possible use in the elaboration of functional foods. A set of optimum extraction conditions was developed for the recovery of inulin plus fructo-oligosaccharides (FOS) from several common inulin-containing plant sources, like chicory roots (Cichorium intybus L.) and Jerusalem artichoke tubers (Helianthus tuberosus L.), as well as from novel sources like globe artichoke inflorescence (Cynara cardunculus L.) and its by-product. Optimal conditions for temperature (60−80 °C), time (20−60 min) and solvent to solid ratio (10−40 mL/g) were estimated in order to maximize inulin plus FOS extraction by using response surface methodology (RSM) with a Box-Behnken design. Inulin plus FOS were estimated colorimetrically by difference between total carbohydrate and reducing sugar contents for the optimization. Moreover, the profile of inulin and low molecular weight carbohydrates was studied in optimized plant extracts by HPLC. Inulin in raw samples and optimal extracts were further characterized by Fourier Transformed Infrared spectroscopy. According to response surface methodology model, optimal conditions for inulin plus FOS extraction depended on plant source and were achieved at a solvent to solid ratio of 27.8–37.4 mL/g, from 62−80 °C and a variable time of 22−60 min. The highest inulin plus FOS contents were achieved in chicory root (70.5 g/100 g dry weight) and Jerusalem artichoke tuber (81.1 g/100 g dry weight), and the lowest ones were attained in globe artichoke by-product (4.2 g/100 g). Nevertheless, its high availability and low cost would support this novel globe artichoke by-product as an alternative and valuable source of inulin and FOS for the food industry. At the same time their reuse as potential prebiotic ingredients would contribute to the circular economy.

目前，食品工业对获得菊粉的兴趣越来越大，因为它可能用于制作功能性食品。为从几种常见的含菊粉植物来源，如菊苣根 ( Cichorium intybus L.) 和菊芋块茎 ( Helianthus tuberosus L.) 中回收菊粉加低聚果糖 (FOS)，开发了一套最佳提取条件，如以及来自新的来源，如朝鲜蓟花序 ( Cynara cardunculusL.) 及其副产品。使用响应面法 (RSM) 估计温度 (60-80 °C)、时间 (20-60 分钟) 和溶剂与固体比 (10-40 mL/g) 的最佳条件，以最大限度地提高菊粉和 FOS 的萃取效果采用 Box-Behnken 设计。为了优化，通过总碳水化合物和还原糖含量之间的差异比色估计菊粉加 FOS。此外，通过 HPLC 在优化的植物提取物中研究了菊粉和低分子量碳水化合物的特征。通过傅里叶变换红外光谱进一步表征原始样品和最佳提取物中的菊粉。根据响应面方法模型，菊粉加 FOS 提取的最佳条件取决于植物来源，并且在溶剂与固体的比例为 27.8–37.4 mL/g 时实现，从 62−80 °C 和 22−60 分钟的可变时间。菊苣根（70.5 g/100 g 干重）和菊芋块茎（81.1 g/100 g 干重）中菊粉加 FOS 含量最高，而洋蓟副产品（4.2 g/100 g 干重）最低。 100克）。尽管如此，它的高可用性和低成本将支持这种新型朝鲜蓟副产品作为食品工业菊粉和低聚果糖的替代和有价值的来源。同时，它们作为潜在的益生元成分的再利用将有助于循环经济。它的高可用性和低成本将支持这种新颖的洋蓟副产品作为食品工业菊粉和低聚果糖的替代和有价值的来源。同时，它们作为潜在的益生元成分的再利用将有助于循环经济。它的高可用性和低成本将支持这种新颖的洋蓟副产品作为食品工业菊粉和低聚果糖的替代和有价值的来源。同时，它们作为潜在的益生元成分的再利用将有助于循环经济。