摘要
探究了温度、时间、食品模拟物、氧气,以及聚丙烯(polypropylene,PP)的3种结构(PP-B、PP-R和PPH)对纳米铜/PP复合膜中铜向食品模拟物迁移的影响。将含有纳米铜和经3-氨丙基三乙氧基硅烷((3-Aminopropyl)triethoxysilane,KH550)处理的纳米铜分别添加到PP-B、PP-R和PP-H母粒中制备成相应的纳米铜/PP复合膜。在20、40和70℃下,将复合膜浸泡在食品模拟物中进行迁移实验。铜向食品模拟物的迁移率随着时间和温度的增加而增大直至平衡。酸性食品模拟物中迁移平衡时,在20℃,纳米铜/PP-B复合膜中铜的迁移率最大,PP-R和PP-H中铜的迁移率无显著性差异;40℃时,纳米铜/PP-H中铜的迁移率最大,PP-B和PP-R中铜的迁移率无显著性差异;而在70℃时,仍然是PP-H中铜的迁移率最大,PP-R次之,PP-B中铜的迁移率最小。
ABSTRACT Temperature, exposure time, food simulants, oxygen, and three kinds of structure （PP-B, PP-R and PP-H） on the migration of copper from nanocopper/PP composite films into the food stimulants were investigated. Nanocopper and modified nanocopper by （3-Aminopropyl） triethoxysilane （KH550） were mixed with PP granules, new granules containing nanocopper and modified nanocopper were added into the composite films by a film-blowing machine. The films were exposed to food simulants at 20, 40 and 70℃. The results showed that with the increase of exposure time and temperature, the copper release was increased. When equilibrium is reached in acidic food simulants, at 20℃ , nanocopper/PP-B has the maximum copper migration ratio, and no big significant difference between PP-R and PP-H ; at 40℃ , PP-H has a maximum copper immigration rate, and no significant difference in PP-B and PP-R compared with ; at 70℃, copper migration rate in PP-H is still the greatest, followed by pp-R and PP-B has the minimum rate.
作者
石玉杰
胡长鹰
姜紫薇
张策
赵泉
SHI Yu-jie;HU Chang-ying;JIANG Zi-wei;ZHANG Ce;ZHAO Quan(Department of Food Science and Engineering, Jinan University, Guangzhou 510632, China;Key Laboratory of Product Packaging and Logistics of Guangdong Higher Education Institutes, Zhuhai 519070, China;Packaging Engineering Institute of Jinan University, Zhuhai 519070, China;Guangdong Inspection and Quarantine Technology Center, Guangzhou 510623, China)
出处
《食品与发酵工业》
CAS
CSCD
北大核心
2018年第1期92-97,共6页
Food and Fermentation Industries
基金
国家自然科学基金(31571762)
关键词
纳米铜
聚丙烯
复合膜
食品模拟物
迁移率
nanocopper
polypropylene
composite film
food simulant
migration
