Department of Food Engineering and Technology, Tezpur University, Napaam 784028, Assam, India.
Department of Food Engineering and Technology, Tezpur University, Napaam 784028, Assam, India.
Carbohydr Polym. 2016 Feb 10;137:608-616. doi: 10.1016/j.carbpol.2015.11.020. Epub 2015 Nov 10.
In the present study, culinary banana peel was explored as a source of raw material for production of cellulose nanofibers (CNFs). For isolation of CNFs, first the peel flour was subjected to different chemical treatments to eliminate non-cellulosic compounds. The obtained chemically treated cellulose fibers were then mechanically tailored and separated into nanofibers using high-intensity ultrasonication at different output power ranging from 0 to 1000 W. The presences of nanofibers in all samples were confirmed by TEM. Increasing output power of ultrasonication reduced size of CNFs and generated more thinner and needle-like structure. SEM, FT-IR and XRD results indicated chemical treatment employed was effective in removing compounds other than cellulose fibers. Thermal analyses evinced the developed CNFs enhanced thermal properties which serve the purpose as an effective reinforcing material to be used as bionanocomposites. Hence, the production of CNFs from this underutilized agro-waste has potential application in commercial field that can add high value to culinary banana.
在本研究中，我们探索了食用香蕉皮作为纤维素纳米纤维（CNF）生产的原料。为了分离 CNF，首先将果皮粉进行不同的化学处理，以去除非纤维素化合物。然后，通过在不同输出功率（从 0 到 1000 W）下进行高强度超声处理，将得到的经过化学处理的纤维素纤维机械地裁剪并分离成纳米纤维。所有样品中纳米纤维的存在均通过 TEM 得到确认。超声处理的输出功率增加会减小 CNF 的尺寸，并产生更多更细的针状结构。SEM、FT-IR 和 XRD 结果表明，所采用的化学处理方法有效地去除了除纤维素纤维以外的化合物。热分析表明，所制备的 CNFs 增强了热性能，可用作有效的增强材料，用于制备生物纳米复合材料。因此，从这种未充分利用的农业废物中生产 CNFs 在商业领域具有潜在的应用前景，可以为食用香蕉增加高附加值。
