Page 168 - 精细化工2019年第9期
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第 36 卷第 9 期 精 细 化 工 Vol.36, No.9
201 9 年 9 月 FINE CHEMICALS Sept. 2019
食品与饲料用化学品
香芹酚/海藻酸钠生物复合膜的制备及性能
*
程 萌,张荣飞,逯文倩,孔瑞琪,王 娟 ,王相友
(山东理工大学 农业工程与食品科学学院,山东 淄博 255000)
摘要:为了提高海藻酸钠膜的包装性能,采用溶剂浇铸法制备了添加不同含量香芹酚的海藻酸钠生物复合膜,
通过 SEM、XRD 和 FTIR 对复合膜的微观结构进行了表征,并对其物理、化学、抑菌和保鲜性能进行了考察。
结果表明:添加香芹酚增加了香芹酚/海藻酸钠生物复合膜的粗糙度,膜中海藻酸盐和香芹酚的分子间发生静电
和氢键作用。复合膜的热稳定性随香芹酚含量增加呈现先增强后降低的趋势,其中,香芹酚体积分数为 0.8%时,
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香芹酚/海藻酸钠复合膜的综合性能最优,水溶性为 90.48%,透明度为 0.23 mm ,水蒸气透过速率为 0.17
2
g/(d·cm ),拉伸强度为 72.24 MPa,断裂伸长率为 83.41%,对丰孢木霉菌(Trichoderma sp.)的抑菌率为 65.79%。
香芹酚/海藻酸钠复合膜能有效保持采后双孢蘑菇的品质,延长其货架期。
关键词:海藻酸钠;香芹酚;包装材料;生物降解;抑菌性;食品化学品
中图分类号:TS255.3 文献标识码:A 文章编号:1003-5214 (2019) 09-1896-08
Preparation and Properties of Carvacrol/Sodium Alginate Composite Films
CHENG Meng, ZHANG Rong-fei, LU Wen-qian, KONG Rui-qi,
*
WANG Juan , WANG Xiang-you
(School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, Shandong, China)
Abstract: In order to improve the packaging performance of sodium alginate (SA) films, carvacrol
(CAR)/SA composite films were prepared using solvent casting method. Their chemical structures and
morphologies were characterized by SEM, XRD and FTIR. The thermal stability, physical, chemical,
antifungal and preservative properties of the composite films were investigated. The results showed that the
introduction of CAR improved the roughness of the composite films. Hydrogen bonding and electrostatic
interaction formed between the molecules of SA and CAR in the film. The thermal stability of the
composite film first increased, and then decreased with the increase of CAR content. The resulting
composite film containing 0.8% CAR (volume fraction) exhibited the best comprehensive performance with
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2
a water solubility of 90.48%, a transparency of 0.23 mm , a water vapor transmission rate of 0.17 g/(d·cm ),
a tensile strength of 72.24 MPa, an elongation at break of 83.41% and an inhibition efficiency against
Trichoderma sp. of 65.79%. The CAR/SA composite films could effectively maintain the quality of
postharvest white mushrooms and extend their shelf life.
Key words: sodium alginate; carvacrol; packaging material; biodegradable; antifungal activity; food chemicals
传统的食品包装材料大多来自化石衍生聚合 生物复合膜通常以天然糖类、蛋白质、脂质等
物,如聚乙烯、聚氯乙烯和聚丙烯。随着人们对环 为主要原料,通过添加成膜助剂、控制成膜条件制
境问题的日益关注,在延长食品货架期的同时,为 备而成。与其他生物高分子材料相比,从天然海藻
了减少包装材料的消耗,可食用和可生物降解的新 中提取的多糖由于具有良好的成膜性和阻隔性,得
[1]
[2]
型生物包装材料不断兴起 。生物聚合物为基质的 到了广泛的研究和应用 。海藻酸钠(SA)是从海
可生物降解膜,以其无毒、生物相容性好、通用性强、 带或马尾藻中提取碘和甘露醇后的副产物,结构
具有广阔的应用前景,受到人们的广泛关注。 式如下所示:
收稿日期:2019-06-19; 定用日期:2019-08-06; DOI: 10.13550/j.jxhg.20190559
基金项目:国家自然科学基金资助项目(31301819,30871757)
作者简介:程 萌(1996—),女,硕士生。联系人:王 娟(1979—),女,副教授,E-mail:wangjuan7912@163.com。