Chen Peilin, Fang Zongmu, Chen Jurong, Hu Bei, Huang Xiaozhou, Zhang Min, Guo Juanjuan
College of Oceanology and Food Sciences, Quanzhou Normal University, Quanzhou, Fujian, China; Fujian Province Key Laboratory for the Development of Bioactive Material from Marine Algae, Quanzhou Normal University, Quanzhou, Fujian, China..
Chaozhou Branch of Chemistry and Chemical Engineering Guangdong Laboratory, Chaozhou, Guangdong, China.
Int J Biol Macromol. 2024 Dec;282(Pt 3):137041. doi: 10.1016/j.ijbiomac.2024.137041. Epub 2024 Oct 28.
Porphyra haitanensis polysaccharide-chitosan (PHP-CS) films were prepared by combining PHP and CS used the casting method with CaCl; the structure, and physical and chemical properties of the film were studied by rheometry, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TG), light transmittance, scanning electron microscopy (SEM) and other means. The results indicated that the tensile strength of the PHP-CS film after formation was 5.63 ± 0.11 MPa, which was due to the interaction between the negative group in PHP and the positive group of CS under the action of hydrogen bonding and van der Waals forces. XRD and SEM results showed that there was a crystal structure in PHP-CS films, which was due to the combination of sulfuric acid group, amino group of CS and CaCl in PHP. Importantly, PHP-CS films had strong UV-blocking properties and high thermal stability. In addition, PHP-CS films had stronger oxidation resistance than PHP and CS. Therefore, PHP-CS film has wide application potential in food preservation and packaging.
采用流延法，通过将条斑紫菜多糖（PHP）与壳聚糖（CS）结合，并加入氯化钙制备了条斑紫菜多糖-壳聚糖（PHP-CS）薄膜；通过流变学、X射线衍射（XRD）、傅里叶变换红外光谱（FTIR）、热重分析（TG）、透光率、扫描电子显微镜（SEM）等手段对薄膜的结构、物理化学性质进行了研究。结果表明，形成后的PHP-CS薄膜的拉伸强度为5.63±0.11兆帕，这是由于PHP中的负基团与CS的正基团在氢键和范德华力作用下相互作用的结果。XRD和SEM结果表明，PHP-CS薄膜中存在晶体结构，这是由于PHP中的硫酸基团、CS的氨基与氯化钙相结合的缘故。重要的是，PHP-CS薄膜具有很强的紫外线阻隔性能和高热稳定性。此外，PHP-CS薄膜比PHP和CS具有更强的抗氧化性。因此，PHP-CS薄膜在食品保鲜和包装方面具有广阔的应用潜力。
