Effect of potassium sorbate on properties and antibacterial effect of konjac glucomannan/zein composite films
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摘要: 本文以魔芋葡甘聚糖和玉米醇溶蛋白为基材,制备了不同山梨酸钾添加量的复合膜,研究了复合膜的理化性能和抑菌效果。结果表明,添加不同含量山梨酸钾对复合膜的膜厚没有显著影响(p>0.05),复合膜的水蒸气透过率和透光性随着山梨酸钾添加量的增加而降低。复合膜的断裂伸长率随着山梨酸钾添加量的增加而显著增大(p<0.05),当其含量为12%时,复合膜的断裂伸长率为36.02%,是未添加山梨酸钾复合膜的1倍;当添加6%的山梨酸钾时,复合膜的拉伸强度最大,为58.78 MPa。随着山梨酸钾添加量的增加,复合膜对大肠杆菌、金黄色葡萄球菌和蜡样芽孢杆菌的抑菌效果明显增强。当山梨酸钾添加量为12%时,鱼肉在4℃储藏时的货架期可延长4 d。复合膜适合应用在食品保鲜包装。Abstract: In this paper, konjac glucomannan and zein were used as the substrate, together with additions of antimicrobial agent ( potassium sorbate) at different content to prepare composite films, and the physicochemical properties and antibacterial effect of the composite films were studied.The results showed that the addition of potassium sorbate had no significant effect on the composite films thickness ( p > 0.05) and the water vapor transmission rate and transparency of the composite films decreased with the increased potassium sorbate content. The elongation at break of the composite films increased significantly with the increased potassium sorbate content ( p < 0.05) , and when the content of the composite film was 12%, the elongation at break was 36.02%, one times larger than that of composite film without potassium sorbate.When the addition of potassium sorbate was6%, the tensile strength of the composite film was the highest, which was 58.78 MPa.With the increased the potassium sorbate content, the antibacterial effect of the composite films on Escherichia coli, Staphylococcus aureus and Bacillus cereus was significantly enhanced.When the potassium sorbate content was 12%, it could prolong the shelf life of fish for 4 days at 4 ℃.The composite films was suitable to be used in food fresh-keeping packaging.
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Keywords:
- composite films /
- potassium sorbate /
- bacteriostasis /
- physicochemical properties
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[1] Azeredo H M C, Waldron K W.Crosslinking in polysaccharideand protein films and coatings for food contact-A review[J].Trends in Food Science&Technology, 2016 (52) :109-122.
[2] 姜楠楠, 陈小亮.抗菌膜在食品包装中的应用及发展趋势[J].塑料包装, 2016, 26 (4) :21-24. [3] Yu Hao, Li Wei, Liu Xing, et al.Improvement of functionality after chitosan-modified zein biocomposites[J].Journal of Biomaterials Science, Polymer Edition.2017, 28 (3) :227-239.
[4] Serna C P, Filho J F.Biodegradable zein-based blend films:structural, mechanical and barrier properties[J].Food Technology&Biotechnology, 2015, 53 (3) :348-353.
[5] Gao Pingping, Wang Feng, Gu Fengying, et al.Preparation and characterization of zein thermo-modified starch films[J].Carbohydrate Polymers, 2016 (157) :1254-1260.
[6] 张慧芸, 郭新宇, 吴静娟.添加丁香精油对玉米醇溶蛋白膜性能及结构的影响[J].食品科学, 2016, 37 (12) :7-12. [7] 王凯, 胥诗滔, 肖满, 等.司盘-80对魔芋葡甘聚糖-玉米醇溶蛋白复合膜性能的影响[J].食品工业科技, 2016, 37 (23) :267-271. [8] 王卉, 孙宏元, 何节玉, 等.羧甲基纤维素钠纳米抗菌复合膜的制备及其性能研究[J].食品工业科技, 2016, 37 (5) :277-280. [9] 王国军.山梨酸 (钾) 的性能及其应用[J].中国食品, 2011, 579 (11) :56-58. [10] 邓雯瑾, 蒋汶龙, 陈安均, 等.百里香精油抗菌涂层包装对鲜切生菜货架期内理化品质及微生物的影响[J].食品与发酵工业, 2016, 42 (7) :247-253. [11] 童佩, 倪学文, 匡映, 等.含五倍子水提物的魔芋葡甘聚糖/乙基纤维素膜理化性和抗菌性研究[J].食品工业科技, 2016, 37 (16) :318-322. [12] Kowalczyk D, Kordowska-Wiater M, Soowiej B, et al.Physicochemical and antimicrobial properties of biopolymercandelilla wax emulsion films containing potassium sorbate-a comparative study[J].Food&Bioprocess Technology, 2014, 8 (3) :1-13.
[13] Pérez L M, Soazo M D V, BalaguéC E, et al.Effect of p H on the effectiveness of whey protein/glycerol edible filmscontaining potassium sorbate to control non-O157 shiga toxin-producing Escherichia coli, in ready-to-eat foods[J].Food Control, 2014, 37 (1) :298-304.
[14] Dariusz Kowalczyk, Monika Kordowska-Wiater, Bartosz Soowiej, et al.Physicochemical and antimicrobial properties of biopolymer-candelilla wax emulsion films containing potassium sorbate-a comparative study[J].Food Bioprocess Technol, 2015, 8 (3) :567-579.
[15] 王卫东, 曹泽虹, 孙月娥, 等.复合抗菌膜对腊肉品质的影响[J].食品科学, 2012, 33 (2) :276-279. [16] Lacey A M L D, López-Caballero M E, Montero P.Agar films containing green tea extract and probiotic bacteria for extending fish shelf-life[J].Food Science and Technology, 2014, 55 (2) :559-564.
[17] 张赟彬, 王景文, 王一非, 等.Florida橘油-壳聚糖复合膜的制备及表征[J].现代食品科技, 2014, 30 (2) :147-152. [18] Sayanjali S, Ghanbarzadeh B, Ghiassifar S.Evaluation of antimicrobial and physical properties of edible film based on carboxymethyl cellulose containing potassium sorbate on some mycotoxigenic Aspergillus species in fresh pistachios[J].Food Science and Technology, 2011, 44 (4) :1133-1138.
[19] 郭丛珊, 张丽叶.含茶多酚大豆分离蛋白抗菌膜的制备及其性能和保鲜效果[J].北京化工大学学报 (自然科学版) , 2011, 38 (4) :104-109. [20] 马中苏, 隋思瑶, 张宁, 等.肉桂醛浓度对浓缩乳清蛋白/壳聚糖复合膜性能的影响[J].现代食品科技, 2015, 31 (2) :113-118.
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