首页> 外文期刊>International Journal of Biological Macromolecules: Structure, Function and Interactions >Facile synthesis and characterizations of antibacterial and antioxidant of chitosan monoterpene nanoparticles and their applications in preserving minced meat
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Facile synthesis and characterizations of antibacterial and antioxidant of chitosan monoterpene nanoparticles and their applications in preserving minced meat

机译:壳聚糖单萜烯醛植物抗菌和抗氧化剂的容易合成及其特征及其在保存碎肉中的应用

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Chitosan nanoparticles loaded monoterpenes (ChMNPs) were prepared for preservation of minced meat from oxidative changes and growth of microorganisms. Four monoterpenes (limonene, linalool, menthol and thymol) were used to synthesis of four different types of ChMNPs. The physicochemical characteristics of nanoparticles were analyzed using Scanning electron microscopy (SEM) and Zeta potential. SEM showed that the nanoparticles were nearly uniformly shape and size and the zeta potential values ranged between 0.0346 and -0.1690 mV. in vitro antimicrobial activity of Ch, monoterpenes (M) and ChMNPs against Gram (-) bacteria Escherichia coli (ATCC 8739) and Salmonella typhimurium (ATCC 1402) was analyzed using serial dilution test. E. coli was more susceptible than S. typhimurium to these products. ChMNPs exhibited good in vivo antimicrobial and antioxidant property for the minced meat samples during refrigerated storage. Verification of testing hypothesis was performed by assessing a DPPH radical scavenging activity, peroxide value and E. coli reduction of experimental nanoparticles. Significant effects of ChMNPs were observed at 1000 and 2500 mg/kg on the total number of E. coli in meat samples during storage time. The results indicate that ChMNPs can be used to preserve food as antimicrobial agents and to extend shelf life. (C) 2020 Elsevier B.V. All rights reserved.
机译:制备壳聚糖纳米粒子装载单波培(CHMNPS),用于保护碎肉免受微生物的氧化变化和生长。四种单波隆(LimoneNe,Linalool,Menthol和Thymol)用于合成四种不同类型的CHMNP。使用扫描电子显微镜(SEM)和Zeta电位分析纳米颗粒的物理化学特性。 SEM表明纳米颗粒几乎均匀的形状和尺寸,Zeta电位值范围为0.0346和-0.1690 mV。使用连续稀释试验分析了CH,单色素(M)和CHMNP的体外抗微生物活性对克( - - )细菌大肠杆菌(ATCC 8739)和沙门氏菌(ATCC 1402)进行分析。大肠杆菌对这些产品的伤寒伤寒更容易受到伤口。在冷藏储存期间,CHMNP良好地表现出碎肉样品的体内抗微生物和抗氧化性能。通过评估DPPH自由基清除活性,过氧化物值和实验纳米粒子的大肠杆菌进行测试,进行测试假设的验证。在储存时间期间,在肉类样品中的大肠杆菌总数为1000和2500mg / kg,观察CHMNP的显着效果。结果表明,CHMNP可用于保护食物作为抗微生物剂并延长保质期。 (c)2020 Elsevier B.v.保留所有权利。

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