将精油掺入活性包装材料,提高其有效利用率,选择香芹酚(carvacrol)作为精油模型,利用真空负载法将香芹酚封装在经4 mol/L盐酸刻蚀后的埃洛石纳米管中,制备了埃洛石纳米管-香芹酚复合物,进一步对埃洛石纳米管-香芹酚复合物进行聚电解质吸附包封,形成了控释体系。采用傅里叶变换红外光谱仪、透射电镜、氮气吸附、热重分析等手段表征了4 mol/L盐酸刻蚀后埃洛石纳米管的结构形貌和香芹酚负载量,并研究了香芹酚的释放速率。结果表明,经4 mol/L盐酸刻蚀后的埃洛石纳米管比表面积由29.506 m2/g增加到95.577 m2/g,香芹酚的负载量由6.7%增加到24.2%。吸附聚电解质层包封后,埃洛石纳米管-香芹酚复合物中香芹酚的初期快速释放得到显著改善,具有明显的控释效果,为精油在抗菌抗氧化食品包装材料中的应用提供了依据。
To investigate the inclusion of essential oils in packaging materials, and improve its effective utilization rate, carvacrol were selected as the essential oil model, and halloysite nanotube-carvacrol composites were prepared by encapsulating carvacrol in halite nanotubes etched with 4 mol/L HCl, using a vacuum process. The controlled release system was prepared by polyelectrolyte encapsulation. The structure and morphology of halloysite nanotube etched with 4 mol/L hydrochloric acids, the carvacrol load and the release rate of carvacrol were characterized by using fully automatic surface and porosity analyzer, transmission electron microscope, Fourier infrared spectrometer and thermogravimetric analyzer stability. The results showed that the specific surface area of halloysite nanotube increased from 29.506 m2/g to 95.577 m2/g, and a load of carvacrol increased from 6.7% to 24.2%. Using polyelectrolyte encapsulation, the releasing of carvacrol in the composites was decreased significantly, and it had an obvious controlled-release effect. These results provided the basis for the application of essential oil as antibacterial and antioxidant food packaging materials.
[1] IRKIN R,ESMER O K.Novel food packaging systems with natural antimicrobial agents[J].Journal of Food Science and Technology,2015,52(10):6 095-6 111.
[2] VILELA C,KUREK M,HAYOUKA Z,et al.A concise guide to active agents for active food packaging[J].Trends in Food Science & Technology,2018,80:212-222.
[3] OTONI C G,ESPITIA P J P,AVENA-BUSTILLOS R J,et al.Trends in antimicrobial food packaging systems:Emitting sachets and absorbent pads[J].Food Research International,2016,83:60-73.
[4] LLORENS A,LLORET E,PICOUET P A,et al.Metallic-based micro and nanocomposites in food contact materials and active food packaging[J].Trends in Food Science & Technology,2012,24(1):19-29.
[5] SYLVIE,GAILLET,JEAN-MAX,et al.Silver nanoparticles:Their potential toxic effects after oral exposure and underlying mechanisms-A review[J].Food and Chemical Toxicology,2015,77:58-63.
[6] HYLDGAARD M,MYGIND T,MEYER R L.Essential oils in food preservation:Mode of action,synergies,and interactions with food matrix components[J].Frontiers in Microbiology,2012,3(12):12.
[7] MURIELl-GALET V,CRAN M J,BIGGER S W,et al.Antioxidant and antimicrobial properties of ethylene vinyl alcohol copolymer films based on the release of oregano essential oil and green tea extract components[J].Journal of Food Engineering,2015,149:9-16.
[8] CALO J R,CRANDALL P G,O″BRYAN C A,et al.Essential oils as antimicrobials in food systems-A review[J].Food Control,2015,54:111-119.
[9] 李鑫玲,康怀彬,张慧芸.肉桂精油纳米胶囊制备表征及体外抗菌抗氧化能力[J].食品与发酵工业,2019,45(23):121-127.
LI X L,KANG H B,ZHANG H Y.Preparation and characterization of cinnamon essential oil-loaded and its antibacterial and antioxidant activities[J].Food and Fermentation Industry,2019,45(23):121-127.
[10] HYEOCK L M,YEON K S,JIN P H.Effect of halloysite nanoclay on the physical,mechanical,and antioxidant properties of chitosan films incorporated with clove essential oil[J].Food Hydrocolloids,2018,84:58-67.
[11] BIDDECI G,CAVALLARO G,DI B F,et al.Halloysite nanotubes loaded with peppermint essential oil as filler for functional biopolymer film[J].Carbohydrate Polymers,2016,152:548-557.
[12] 宋文龙,李洋洋,郜海燕,等.生姜精油微胶囊薄膜包装对秋葵保鲜效果的影响[J].食品与发酵工业,2020,46(8):142-148.
SONG W L,LI Y Y,GAO H Y,et al.Effect of ginger essential oil microcapsule film packaging on okra preservation [J].Food and Fermentation Industry,2020,46(8):142-148.
[13] MIHINDUKULASURIYA S D F,LIM L T.Nanotechnology development in food packaging:A review[J].Trends in Food Science & Technology,2014,40(2):149-167.
[14] 党金贵,丘晓琳,唐亚丽,等.香豆素修饰介孔硅食品抗氧化膜的制备与表征[J].功能材料,2019,50(9):9 174-9 180.
DANG J G,QIU X L,TANG Y K,,et al.Preparation and characterization of coumarin-modified mesoporous silicon food anti-oxidation film[J].Functional Materials,2019,50(9):9 174-9 180.
[15] LEE M H,PARK H J.Preparation of halloysite nanotubes coated with Eudragit for a controlled release of thyme essential oil[J].Journal of Applied Polymer ence,2015,132(46).DOI:10.1002/app.42771
[16] SEVEN S A,TASTAN Ö F,TAS C E,et al.Insecticide-releasing LLDPE films as greenhouse cover materials[J].Materials Today Communications,2019,19:170-176.
[17] LVOV Y,ABDULLAYEV E.Functional polymer-clay nanotube composites with sustained release of chemical agents[J].Progress in Polymer Science,2013,38(10-11):1 690-1 719.
[18] LIU M,JIA Z,JIA D,et al.Recent advance in research on halloysite nanotubes-polymer nanocomposite[J].Progress in Polymer Science,2014,39(8):1 498-1 525.
[19] CONTI G N,BERNESCHI S,COSI F,et al.Coupling of angle polished waveguides to high-Q whispering gallery mode resonators[C] The European Conference on Lasers and Electro-Optics.Optical Society of America,2011.
[20] ABDULLAYEV E,JOSHI A,WEI W,et al.Enlargement of halloysite clay nanotube lumen by selective etching of aluminum oxide[J].ACS Nano,2012,6(8):7 216-7 226.
[21] ZHANG Y,FU L,YANG H.Insights into the physicochemical aspects from natural halloysite to silica nanotubes[J].Colloids and Surfaces A:Physicochemical and Engineering Aspects,2012,414:115-119.
[22] PAPOULIS D,KOMARNENI S,NIKOLOPOULOU A,et al.Palygorskite-and halloysite-TiO2 nanocomposites:Synthesis and photocatalytic activity[J].Applied Clay Science,2010,50(1):118-124.
[23] LVOV Y,WANG W,ZHANG L,et al.Halloysite clay nanotubes for loading and sustained release of functional compounds[J].Advanced Materials,2016,28(6):1 227-1 250.
