University of Perugia, Civil and Environmental Engineering Department, UdR INSTM, Strada di Pentima 4, 05100 Terni, Italy.
University of Perugia, Civil and Environmental Engineering Department, UdR INSTM, Strada di Pentima 4, 05100 Terni, Italy.
Carbohydr Polym. 2019 Apr 1;209:328-337. doi: 10.1016/j.carbpol.2019.01.048. Epub 2019 Jan 15.
The aim of this research activity was based on the revalorization of Amplodesmos mauritanicus (Diss), an African grass largely presented in the Algerian territory. Diss stems were selected as native botanic material for the extraction of cellulose nanocrystals (CNC). Two different pretreatment steps were carried out to extract CNC from Amplodesmos mauritanicus stems and the following acidic hydrolysis procedure allowed to extract/obtain cellulose nanocrystals in aqueous suspension. The effect of the two different pretreatments, based essentially on chemical or enzymatic treatments, were deeply investigated and the properties compared. Field emission scanning electron microscopy (FESEM), thermogravimetric analysis (TGA), Fourier transform infrared (FTIR) spectroscopy and X-ray diffraction (XRD) were considered for the characterization of raw material, chemical or enzymatic treated Diss stems and CNC extracted from both chemical and enzymatic pretreated cellulose.
本研究活动的目的是基于对非洲草种 Amplodesmos mauritanicus（ Diss ）的再利用，该草种在阿尔及利亚领土上广泛存在。Diss 茎被选为提取纤维素纳米晶体（CNC）的本地植物材料。为了从 Amplodesmos mauritanicus 茎中提取 CNC，进行了两种不同的预处理步骤，随后进行了酸性水解程序，以在水悬浮液中提取/获得纤维素纳米晶体。深入研究了两种不同预处理方法（主要基于化学或酶处理）的效果，并对其性能进行了比较。为了对原材料、经过化学或酶处理的 Diss 茎以及从化学和酶预处理纤维素中提取的 CNC 进行表征，考虑了场发射扫描电子显微镜（FESEM）、热重分析（TGA）、傅里叶变换红外（FTIR）光谱和 X 射线衍射（XRD）。
