Ramezanzade Leila, Hosseini Seyed Fakhreddin, Nikkhah Maryam
Department of Seafood Processing, Faculty of Marine Sciences, Tarbiat Modares University, P.O. Box 46414-356, Noor, Iran.
Department of Seafood Processing, Faculty of Marine Sciences, Tarbiat Modares University, P.O. Box 46414-356, Noor, Iran.
Food Chem. 2017 Nov 1;234:220-229. doi: 10.1016/j.foodchem.2017.04.177. Epub 2017 May 2.
In this study, an antioxidant peptide fraction with a molecular mass<30kDa (PF30) isolated from rainbow trout (Oncorhynchus mykiss) skin gelatin hydrolysates was encapsulated in chitosan-coated nanoliposomes. The mean particle size of liposomal nanovesicles containing PF30 was found to be in the range 163.4-234nm with a low polydispersity index (PDI<0.5); furthermore, the ζ-potential changed from +3.9mV in uncoated liposomes to +45.5mV in biopolymer-coated liposomes. FTIR spectra showed electrostatic interactions as well as hydrogen bonding between phospholipid head groups and amine groups of chitosan. The entrapment efficiency of PF30 (2mg/ml) was found to be highest in nanoliposomes coated with 0.4% (w/v) chitosan. Biopolymer-coated liposomes demonstrated more sustained peptide release behavior in vitro. Moreover, the chitosan-coated nanoliposomes maintained the antioxidant activity of the PF30 and could be considered a potential candidate for efficient delivery of bioactive compounds in nutraceutical and functional foods.
在本研究中,从虹鳟(Oncorhynchus mykiss)鱼皮明胶水解物中分离得到的分子量<30kDa的抗氧化肽组分(PF30)被包裹于壳聚糖包被的纳米脂质体中。发现含有PF30的脂质体纳米囊泡的平均粒径在163.4 - 234nm范围内,多分散指数较低(PDI<0.5);此外,ζ电位从未包被脂质体中的 +3.9mV变为生物聚合物包被脂质体中的 +45.5mV。傅里叶变换红外光谱(FTIR)显示了磷脂头部基团与壳聚糖胺基之间的静电相互作用以及氢键。发现PF30(2mg/ml)在0.4%(w/v)壳聚糖包被的纳米脂质体中的包封率最高。生物聚合物包被的脂质体在体外表现出更持久的肽释放行为。此外,壳聚糖包被的纳米脂质体保持了PF30的抗氧化活性,可被视为营养保健品和功能性食品中生物活性化合物高效递送的潜在候选物。
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