Pech-Cohuo Soledad Cecilia, Martín-López Héctor, Uribe-Calderón Jorge, González-Canché Nancy Guadalupe, Salgado-Tránsito Iván, May-Pat Alejandro, Cuevas-Bernardino Juan Carlos, Ayora-Talavera Teresa, Cervantes-Uc José Manuel, Pacheco Neith
Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco CIATEJ, A.C. Subsede Sureste, Parque Científico Tecnológico de Yucatán, Mérida 97302, Yucatán, Mexico.
Centro de Investigacion Cientifica de Yucatan, Unidad de Materiales, Mérida 97205, Yucatán, Mexico.
Polymers (Basel). 2022 Mar 26;14(7):1346. doi: 10.3390/polym14071346.
The properties of biological-chemical chitosan (BCh) films from marine-industrial waste and a non-conventional Ramon starch (RS) () were investigated. Blended films of BCh/RS were prepared to a volume ratio of 4:1 and 1:4, named (BChRS-80+q, biological-chemical chitosan 80% / and Ramon starch, BChRS-20+q, biological-chemical chitosan 20% / and Ramon starch, both with quercetin), Films from commercial chitosan (CCh) and corn starch (CS), alone or blended (CChCS-80+q, commercial chitosan 80% / and corn starch, CChCS-20+q commercial chitosan 20% / and corn starch, both with quercetin) were also prepared for comparison purposes. Films were investigated for their physicochemical characteristics such as thickness, moisture, swelling, water-vapor permeability, and water solubility. In addition, their mechanical and structural properties were studied using Fourier Transform Infrared Spectroscopy (FTIR), Thermogravimetric analysis (TGA) and Scanning Electron Microscopy (SEM) techniques. Antioxidant activity was evaluated as radical scavenging, and antimicrobial effect was also determined. The BCh and RS films presented similar tensile strength values compared with commercial biopolymers. Only films with chitosan presented antioxidant and antimicrobial activity. The FTIR spectra confirmed the interactions between functional groups of the biopolymers. Although, BChRS-80+q and BChRS-20+q films exhibited poor mechanical performance compared to their commercial counterparts, they showed good thermal stability, and improved antioxidant and antimicrobial activity in the presence of quercetin. BChRS-80+q and BChRS-20+q films have promising applications due to their biological activity and mechanical properties, based on a novel material that has been underutilized (Ramon starch) that does not compete with materials for human feeding and may be used as a coating for food products.
研究了利用海洋工业废料制备的生物化学壳聚糖（BCh）薄膜以及一种非常规的拉蒙淀粉（RS）（）的性能。制备了体积比为4:1和1:4的BCh/RS共混薄膜，分别命名为（BChRS-80+q，生物化学壳聚糖80% / 和拉蒙淀粉，BChRS-20+q，生物化学壳聚糖20% / 和拉蒙淀粉，均含有槲皮素）。还制备了由商业壳聚糖（CCh）和玉米淀粉（CS）单独或共混而成的薄膜（CChCS-80+q，商业壳聚糖80% / 和玉米淀粉，CChCS-20+q，商业壳聚糖20% / 和玉米淀粉，均含有槲皮素）用于比较。对薄膜的厚度、水分、溶胀度、水蒸气透过率和水溶性等物理化学特性进行了研究。此外，还使用傅里叶变换红外光谱（FTIR）、热重分析（TGA）和扫描电子显微镜（SEM）技术研究了它们的机械和结构性能。评估了抗氧化活性作为自由基清除能力，并测定了抗菌效果。与商业生物聚合物相比，BCh和RS薄膜呈现出相似的拉伸强度值。只有含壳聚糖的薄膜具有抗氧化和抗菌活性。FTIR光谱证实了生物聚合物官能团之间的相互作用。尽管BChRS-80+q和BChRS-20+q薄膜与它们的商业同类产品相比机械性能较差，但它们表现出良好的热稳定性，并且在存在槲皮素的情况下抗氧化和抗菌活性有所提高。基于一种未被充分利用的新型材料（拉蒙淀粉），BChRS-80+q和BChRS-20+q薄膜因其生物活性和机械性能而具有广阔的应用前景，该材料不与人类食用材料竞争，可作为食品涂层使用。
