Morales-Juárez Abraham Azael, Terrazas Armendáriz Luis Daniel, Alcocer-González Juan Manuel, Chávez-Guerrero Leonardo
Mechanical and Electrical Engineering School, Universidad Autónoma de Nuevo León, Pedro de Alba s/n, San Nicolás de los Garza, San Nicolas de los Garza C.P. 66455, Nuevo León, Mexico.
Biological Sciences School, Universidad Autónoma de Nuevo León, Pedro de Alba s/n, San Nicolás de los Garza C.P. 66455, Nuevo León, Mexico.
Polymers (Basel). 2023 Aug 31;15(17):3613. doi: 10.3390/polym15173613.
Steady growth in beer production is increasing the number of by-products named brewers' spent grain. Such by-products are a source of several components, where cellulose is usually present in high amounts. The aim of this study was to develop a protocol to obtain a mix of cellulose microfibers with an average diameter of 8-12 µm and cellulose nanoplatelets with an average thickness of 100 nm, which has several applications in the food industry. The process comprised one alkaline treatment followed by acid hydrolysis, giving a new mix of micro and nanocellulose. This mix was characterized by Fourier transform infrared spectroscopy, scanning electron microscopy, and laser scanning microscopy corroborating the presence and measurements of the cellulose nanostructure, showing an aspect ratio of up to 500. Finally, we demonstrated that the administration of this new type of nanocellulose allowed us to control the weight of mice (feed intake), showing a significant percentage of weight reduction (4.96%) after 15 days compared with their initial weight, indicating the possibility of using this material as a dietary fiber.
啤酒产量的稳步增长使得名为啤酒糟的副产品数量不断增加。此类副产品是多种成分的来源，其中纤维素通常含量很高。本研究的目的是开发一种方案，以获得平均直径为8 - 12微米的纤维素微纤维与平均厚度为100纳米的纤维素纳米片的混合物，该混合物在食品工业中有多种应用。该过程包括一次碱处理，随后进行酸水解，得到一种新的微纤维素和纳米纤维素混合物。通过傅里叶变换红外光谱、扫描电子显微镜和激光扫描显微镜对该混合物进行表征，证实了纤维素纳米结构的存在和测量结果，显示其长径比高达500。最后，我们证明给予这种新型纳米纤维素能够控制小鼠体重（采食量），与初始体重相比，15天后体重显著减轻（4.96%），这表明该材料有可能用作膳食纤维。
