Zhang Zhiwei, Zhao Lifeng, Qu Hang, Zhou Huabin, Yang Hailong, Chen Hangjun
School of Life & Environmental Science, Wenzhou University, Wenzhou 325035, China.
Xiaoshan District Quality Measurement and Monitoring Center, Hangzhou 311215, China.
Int J Biol Macromol. 2022 May 1;206:255-263. doi: 10.1016/j.ijbiomac.2022.02.152. Epub 2022 Feb 28.
Chitin-glucan complex (CGC) is a novel insoluble dietary fiber with multiple physiological activities. In this work, CGC was extracted from the fruiting body of Coprinus comatus and its physicochemical properties and prebiotic effects were investigated. The results indicated that CGC consisted of glucosamine and glucose in a molar ratio of 67: 33 with degree of acetylation of 61.91% and crystallinity index of 25.40%. The maximum degradation temperature was determined to be 307.52 °C, and a woven fibrous structure was observed by scanning electron microscopy. CGC exhibited higher oil-holding capacity, water-holding capacity and nitrite ion adsorption capacity than commercial chitin, and showed potential prebiotic effects. Compared with control and commercial chitin, CGC significantly (P < 0.05) increased the concentration of propionic and butyric acids. These results suggested that CGC from C. comatus was promising to be an alternative source of CGC products and used as a bioactive ingredient in functional foods.
几丁质-葡聚糖复合物（CGC）是一种具有多种生理活性的新型不溶性膳食纤维。在本研究中，从鸡腿菇子实体中提取了CGC，并对其理化性质和益生元效应进行了研究。结果表明，CGC由摩尔比为67:33的氨基葡萄糖和葡萄糖组成，乙酰化度为61.91%，结晶度指数为25.40%。测定其最大降解温度为307.52℃，通过扫描电子显微镜观察到其呈编织纤维结构。与商业几丁质相比，CGC表现出更高的持油能力、持水能力和亚硝酸根离子吸附能力，并显示出潜在的益生元效应。与对照组和商业几丁质相比，CGC显著（P<0.05）提高了丙酸和丁酸的浓度。这些结果表明，来自鸡腿菇的CGC有望成为CGC产品的替代来源，并用作功能性食品中的生物活性成分。
