López-Mercado Janneth, González-Domínguez Martha-Isabel, Reynoso-Marin Francisco-Javier, Acosta Brenda, Smolentseva Elena, Nambo Apolo
Ingeniería en Nanotecnología, Universidad de La Ciénega del Estado de Michoacán de Ocampo, 59103, Sahuayo, Mexico.
Cátedras CONACYT, Coordinación para la Innovación y la Aplicación de la Ciencia y la Tecnología, Universidad Autónoma de San Luis Potosí, 78000, San Luis Potosí, Mexico.
Sci Rep. 2023 Sep 16;13(1):15355. doi: 10.1038/s41598-023-41529-z.
Corn nixtamalization generates a waste byproduct that requires diverse environmental preservation measures depending on the country. Such measures could include catalytic and advanced oxidation processes. This study aims to exploit the hemicellulose within the nejayote (32.5%) to create added value chemicals such as furfural using photocatalytic hydrolysis. In the present work, titania (TiO) nanoparticles (NPs) were greenly synthesized using Ricinus Communis (RC), Moringa Oleifera (MO) or Bougainvillea Spectabilis (BS) plant extracts. Obtained nanoparticles were characterized using XRD, SEM, EDS, BET, XPS and UV-vis techniques. Furthermore, the photocatalytic performance of the obtained samples was evaluated in the furfural production from nejayote. Furfural yield reached 44% in 30 min using the BS synthesized material, which is 1.6 × the yield obtained by the material synthesized with MO extract (26.4% at 45 min) and 6 × the yield obtained by the material obtained with RC (7.2% at 90 min). Such results have not been reported before in the literature and could be the groundwork for novel waste treatments in the tortilla-making industry.
玉米碱法处理会产生一种废弃副产品，根据不同国家的情况，需要采取多种环境保护措施。这些措施可能包括催化和高级氧化工艺。本研究旨在利用 nejayote 中含有的半纤维素（32.5%），通过光催化水解来制备糠醛等具有附加值的化学品。在本工作中，使用蓖麻（RC）、辣木（MO）或叶子花（BS）植物提取物绿色合成了二氧化钛（TiO）纳米颗粒（NPs）。使用 XRD、SEM、EDS、BET、XPS 和紫外可见光谱技术对所得纳米颗粒进行了表征。此外，还评估了所得样品在从 nejayote 生产糠醛过程中的光催化性能。使用 BS 合成材料时，糠醛产率在 30 分钟内达到 44%，是使用 MO 提取物合成材料（45 分钟时为 26.4%）产率的 1.6 倍，是使用 RC 合成材料（90 分钟时为 7.2%）产率的 6 倍。此类结果此前在文献中未见报道，可为玉米饼制作行业新型废物处理奠定基础。
