现代食品科技2025，Vol.41Issue(12)：89-99,11.DOI:10.13982/j.mfst.1673-9078.2025.12.1386
木质素纳米颗粒/茶多酚/海藻酸钠复合膜性能及其在辣椒保鲜中的应用
Lignin Nanoparticle/Tea Polyphenol/Sodium Alginate Composite Membrane Properties and Applications in Pepper Preservation
摘要
Abstract
Lignin nanoparticles(LNPs)and tea polyphenol(TP)were prepared through self-assembly and infused with a sodium alginate(SA)polysaccharide membrane solution using a blending technique.SA/TP/LNPs composite films were prepared using a casting method.The effects of the LNPs content on the properties of the SA/TP/LNPs composite film and its application in pepper preservation were studied.The prepared LNPs were approximately 98.33 nm thick.The SA film is an excellent carrier for LNPs and TP.With increasing levels of the LNPs,the color of the film gradually deepened,and the light transmittance gradually decreased.The overall performance of the SA/TP/LNPS-5 composite film(LNP mass fraction of 5%)was improved compared with that of the SA film,as the tensile strength increased by 114.67%and the elongation at break and water vapor transmission rate were reduced by 47.81%and 72.04%,respectively.The composite film exhibited inhibition rates of 91.28%against Escherichia coli and 89.20%Staphylococcus aureus.The free radical scavenging rates of DPPH and ABTS were 88.75%and 87.21%,respectively.A preservation experiment demonstrated that the SA/TP/LNPs-5 composite film effectively reduced the weight loss rate of pepper and delayed the consumption of Vc content in pepper compared to the CK and PE film groups.On the 10th day of storage,the weight loss rates were reduced by 49.93%and 39.12%,respectively(P<0.05).The highest Vc content in the SA/TP/LNPs-5 composite membrane group was 54.17 mg/100 g.In summary,this study introduced an environmentally friendly composite film with antibacterial and antioxidant properties,providing novel insights for the application of lignin.The composite film has promising application prospects in food preservation.关键词
木质素/茶多酚/海藻酸钠/复合膜/理化性能/辣椒保鲜Key words
lignin/tea polyphenol/sodium alginate/composite membrane/physicochemical performance index/pepper preservation引用本文复制引用
陈炳洁,刘思思,李力,刘汝宽,肖志红,易有金..木质素纳米颗粒/茶多酚/海藻酸钠复合膜性能及其在辣椒保鲜中的应用[J].现代食品科技,2025,41(12):89-99,11.基金项目
湖南省重点研发计划项目(2024JK2142) （2024JK2142）
湖南省科技创新领军人才(2020RC4026) （2020RC4026）
湖南省重大科技创新平台(2023PT1001) （2023PT1001）
郴州国家可持续发展议程创新示范区建设专项(2022sfq53) （2022sfq53）
国家自然科学基金青年项目(32201509) （32201509）
