Bioprospecting Laboratory, Centre for Bioenergy, School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, 613 401, India.
Sci Rep. 2019 Nov 13;9(1):16709. doi: 10.1038/s41598-019-53412-x.
In the present work, sustainable nanomaterials, cellulose, and spherical cellulose nanocrystals (SCNCs) were isolated from the non-edible parts of jackfruit (Artocarpus heterophyllus). Of the three different methods tested, sodium chlorite treatment produced the highest yield of cellulose, 20.08 ± 0.05% w/w (dry weight). Peaks observed in CP/MAS C NMR spectrum and FTIR frequencies revealed the presence of α-cellulose and absence of other biomass fractions like hemicellulose and lignin. XRD analysis showed a high crystallinity of 83.42%. An appearance of a sharp endothermal peak at 323 °C in DSC and decomposition patterns between 310-420 °C of TGA confirms the presence of cellulose. Further, Sulphuric acid hydrolysis was employed to produce SCNCs and examined by TEM for the morphology and by HPLC for the presence of glucose.
在本工作中，从菠萝蜜（Artocarpus heterophyllus）的不可食用部分中分离出了可持续纳米材料、纤维素和球形纤维素纳米晶体（SCNC）。在测试的三种不同方法中，次氯酸钠处理产生的纤维素得率最高，为 20.08 ± 0.05%（干重）。CP/MAS C NMR 光谱和 FTIR 频率中的峰表明存在α-纤维素，而不存在其他生物质成分，如半纤维素和木质素。XRD 分析显示结晶度高达 83.42%。在 DSC 中，在 323°C 处出现尖锐的吸热峰，在 TGA 中在 310-420°C 之间出现分解模式，这证实了纤维素的存在。此外，采用硫酸水解法制备 SCNC，并通过 TEM 观察形貌，通过 HPLC 观察葡萄糖的存在。
