Aurelio Ramírez-Hernández, Mextlisol Cruz-Valencia Shardey, Páramo-Calderón Delia E, Acevedo-Gómez Ricardo, Gerardo González-García, Nolasco-Hipolito Cirilo, Eduardo Báez-García José, Carlos Conde-Acevedo Jorge, Alejandro Aparicio-Saguilán
Centro de Investigaciones Científicas, Instituto de Química Aplicada, Universidad del Papaloapan, Circuito Central 200 Parque Industrial, San Juan Bautista Tuxtepec, Oaxaca, Mexico.
Ingeniería en alimentos, Universidad del Papaloapan, Circuito Central 200 Parque Industrial, San Juan Bautista Tuxtepec, Oaxaca, Mexico.
Int J Biol Macromol. 2023 Aug 15;246:125611. doi: 10.1016/j.ijbiomac.2023.125611. Epub 2023 Jul 3.
The objective of this work was to modify banana starch with pineapple leaf fibers (PALF) and its production of biodegradable films. The reaction conditions of the starch modification were a Starch/PALF mass ratio of 50, a time of 1 h and a temperature of 140 °C, to obtain a yield of 41.18 %. Characterization by FTIR and NMR confirmed that the chemical reaction was carried out. XRD and TGA analysis showed that the crystalline zones of the starch were affected during the modification and the product obtained is thermally less stable compared to unmodified starch. The modified starch showed a lower pasting profile compared to the native starch; however, the modified starch showed the ability to form a film. The starch-PALF films were obtained by the casting method and partially characterized. These films presented better mechanical properties compared to the unmodified films. Also, these films could compete with conventional non-biodegradable plastics.
这项工作的目的是用菠萝叶纤维（PALF）对香蕉淀粉进行改性，并生产可生物降解薄膜。淀粉改性的反应条件为淀粉/菠萝叶纤维质量比50、时间1小时、温度140℃，产率为41.18%。通过傅里叶变换红外光谱（FTIR）和核磁共振（NMR）表征证实了化学反应的发生。X射线衍射（XRD）和热重分析（TGA）表明，改性过程中淀粉的结晶区受到影响，与未改性淀粉相比，所得产物的热稳定性较低。与天然淀粉相比，改性淀粉的糊化特性较低；然而，改性淀粉显示出形成薄膜的能力。通过流延法获得了淀粉-菠萝叶纤维薄膜并进行了部分表征。与未改性薄膜相比，这些薄膜具有更好的机械性能。此外，这些薄膜可以与传统的不可生物降解塑料相竞争。
