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Preparation of microcrystalline cellulose from residual Rose stems (Rosa spp.) by successive delignification with alkaline hydrogen peroxide.
International Journal of Biological Macromolecules ( IF 7.7 ) Pub Date : 2020-03-28 , DOI: 10.1016/j.ijbiomac.2020.03.222 Sagnite Ventura-Cruz 1 , Nicolas Flores-Alamo 2 , Alberto Tecante 1
International Journal of Biological Macromolecules ( IF 7.7 ) Pub Date : 2020-03-28 , DOI: 10.1016/j.ijbiomac.2020.03.222 Sagnite Ventura-Cruz 1 , Nicolas Flores-Alamo 2 , Alberto Tecante 1
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Agricultural residues of Rose flowers (Rosa x hybrida L.) are abundant, cheap, and renewable. These lignocellulosic remains are composed of cellulose, hemicellulose, and lignin. They are an attractive feedstock to produce various value-added products, as microcrystalline cellulose (MCC). The objective of this study was to obtain MCC from residual Rose stems (RS) using a successive alkaline peroxide treatment. X-ray diffraction, Fourier-transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), and scanning electron microscopy (SEM) were used to determine the degree of crystallinity, structure characteristics, thermal properties, and morphology, respectively, of MCC. The properties of RS-MCC were compared with those of commercial MCC. The degree of crystallinity of RS-MCC was 70.21%. The X-ray diffraction patterns reveal the presence of Type I cellulose. FTIR showed the absence of non-cellulosic components, mainly lignin, present in the amorphous regions of the RS fibers. Results are promising for taking advantage of agricultural residues as a source of MCC, which could be used as a reinforcing agent in polymeric matrices.
中文翻译：
通过用碱性过氧化氢进行连续的脱木质素反应，从剩余的玫瑰茎（Rosa spp。）中制备微晶纤维素。
月季花（Rosa x hybrida L.）的农业残留物丰富，廉价且可再生。这些木质纤维素残留物由纤维素，半纤维素和木质素组成。它们是生产各种增值产品（如微晶纤维素（MCC））的有吸引力的原料。这项研究的目的是使用连续的碱性过氧化物处理从残留的玫瑰茎（RS）中获得MCC。X射线衍射，傅立叶变换红外光谱（FTIR），热重分析（TGA）和扫描电子显微镜（SEM）分别用于确定MCC的结晶度，结构特征，热性质和形态。比较了RS-MCC和商业MCC的性能。RS-MCC的结晶度为70.21％。X射线衍射图揭示了I型纤维素的存在。FTIR显示在RS纤维的无定形区域中不存在非纤维素组分，主要是木质素。利用农业残留物作为MCC的来源，其结果很有希望，它可以用作聚合物基质中的增强剂。
更新日期：2020-03-28
中文翻译：
通过用碱性过氧化氢进行连续的脱木质素反应，从剩余的玫瑰茎（Rosa spp。）中制备微晶纤维素。
月季花（Rosa x hybrida L.）的农业残留物丰富，廉价且可再生。这些木质纤维素残留物由纤维素，半纤维素和木质素组成。它们是生产各种增值产品（如微晶纤维素（MCC））的有吸引力的原料。这项研究的目的是使用连续的碱性过氧化物处理从残留的玫瑰茎（RS）中获得MCC。X射线衍射，傅立叶变换红外光谱（FTIR），热重分析（TGA）和扫描电子显微镜（SEM）分别用于确定MCC的结晶度，结构特征，热性质和形态。比较了RS-MCC和商业MCC的性能。RS-MCC的结晶度为70.21％。X射线衍射图揭示了I型纤维素的存在。FTIR显示在RS纤维的无定形区域中不存在非纤维素组分，主要是木质素。利用农业残留物作为MCC的来源，其结果很有希望，它可以用作聚合物基质中的增强剂。
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