Steam Explosion-Assisted Extraction of Ergosterol and Polysaccharides from Flammulina velutipes (Golden Needle Mushroom) Root Waste

Foods Pub Date : 2024-06-13 DOI:10.3390/foods13121860

Wenxin Liu, Jinghua Niu, Fengmei Han, Kai Zhong, Ranran Li, Wenjie Sui, Chao Ma, Maoyu Wu

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Abstract

In this work, steam explosion (SE) was applied to prompt the rapid extraction of ergosterol and polysaccharides from Flammulina velutipes root (FVR) waste. Ultrasound-assisted saponification extraction (UASE) followed by water extraction was used to prepare ergosterol and polysaccharides. The results indicated that SE destroyed the complicated structure of FVR and increased its internal porosity and surface roughness. SE caused the thermal degradation of FVR’s structural components and increased the polysaccharide content 0.97-fold. As a result, the extraction yield and efficiency of ergosterol and polysaccharides were improved. The theoretical maximum extraction concentration (C∞) and diffusion coefficient (D) were increased by 34.10% and 78.04% (ergosterol) and 27.69% and 48.67% (polysaccharides), respectively. The extraction yields obtained within 20–30 min of extraction time exceeded those of untreated samples extracted after several hours. For polysaccharides, SE led to a significant reduction in the average molecular weight, increased the percentage of uronic acids and decreased the neutral sugar percentage. The monosaccharide composition was changed by SE, with an increase in the molar ratio of glucose of 64.06% and some reductions in those of other monosaccharides. This work provides an effective method for the processing of fungi waste and adds to its economic value, supporting its high-value utilization in healthcare products.

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蒸汽爆破辅助提取金针菇根部废弃物中的麦角甾醇和多糖

本研究采用蒸汽爆破法（SE）从绒毛菜根（FVR）废弃物中快速提取麦角甾醇和多糖。采用超声辅助皂化萃取（UASE）和水萃取制备麦角甾醇和多糖。结果表明，SE 破坏了 FVR 的复杂结构，增加了其内部孔隙率和表面粗糙度。SE 使 FVR 的结构成分热降解，多糖含量增加了 0.97 倍。因此，麦角甾醇和多糖的提取率和效率都得到了提高。理论最大提取浓度（C∞）和扩散系数（D）分别提高了 34.10%和 78.04%（麦角甾醇）和 27.69%和 48.67%（多糖）。在 20-30 分钟提取时间内获得的提取率超过了几小时后提取的未处理样品的提取率。就多糖而言，SE 导致平均分子量显著降低，尿酸百分比增加，中性糖百分比降低。SE 改变了单糖的组成，其中葡萄糖的摩尔比增加了 64.06%，其他单糖的摩尔比也有所降低。这项工作为处理真菌废弃物提供了一种有效的方法，并增加了其经济价值，支持其在保健产品中的高价值利用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Foods

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