Extraction of Cellulose Nanofibrils (CNFs) from Pomelo Peel via a Green and Simple Method.

Keywords: Pomelo peel; extraction; cellulose nanofibrils; lemon juice hydrolysis; ; ; ; ; EN Pomelo peel extraction cellulose nanofibrils lemon juice hydrolysis ZH 8415 8428 14 11/21/22 20221220 NES 221220 Introduction The large-scale production of the agricultural products in the recent decades has brought significant economic benefits to the humanity; however, the negative impact of the agricultural residues on the environment cannot be ignored (Ullah, Kumar Sharma, and Dhingra et al. [45]). It was observed that with the gradual processing stages, the impurities such as hemicellulose and lignin were removed, and the relatively pure cellulose material with the chemical structure of natural cellulose was obtained. However, in this study, these peaks are observed to be separated after ball milling, which shows that the high-energy ball milling is able to effectively peel off hemicellulose and lignin around cellulose to further purify the extracted cellulose. This is owing to the effective removal of ash, grease, and non-cellulose entities on the surface of cellulose during the extraction process, thus, exposing the cellulose material inside the raw sample. [Extracted from the article]