Simulation on the Migration of Copper from Regreened Indocalamus Leaves to Different Food

LUO Hong-quan, LIU Li-ping, SHEN Hong-gui, WANG Ning, CHEN Hai-qun, CAI Ai-jun, XIE Jian-jian

Packaging Engineering ›› 2023 ›› Issue (23) : 135-141.

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PDF(430 KB)
Packaging Engineering ›› 2023 ›› Issue (23) : 135-141. DOI: 10.19554/j.cnki.1001-3563.2023.23.016

Simulation on the Migration of Copper from Regreened Indocalamus Leaves to Different Food

  • LUO Hong-quan, LIU Li-ping, SHEN Hong-gui, WANG Ning, CHEN Hai-qun, CAI Ai-jun, XIE Jian-jian
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Abstract

The work aims to measure the migration of copper from regreened indocalamus leaves to different food simulants, and evaluate the food safety risks. Regreened indocalamus leaves were placed in different food simulants and kept at 100 ℃ for 24 hours so that the copper in the leaves could migrate to the food simulants fully. The content of copper in regreened indocalamus leaves was measured by microwave digestion-Flame Atomic Absorption Spectrometry (AAS) to evaluate the migration of copper from regreened indocalamus leaves to food simulants before and after the simulation migration test. Finally, the migration amount was calculated, and the migration regularities of copper were analyzed. The copper in regreened indocalamus leaves did not migrate in 50 g/L sodium bicarbonate solution but migrated in other 5 food simulants varying in degrees. The largest amount of copper migration was measured in soybean oil. When the mass concentration of copper sulfate pentahydrate solution was 5 g/L, the copper contents of the prepared frozen and cold fresh regreened indocalamus leaves were 1 119.2 mg/kg and 548.2 mg/kg respectively, and the migration amount of copper from the leaves to soybean oil was 6.1 mg/L and 2.8 mg/L respectively. The copper in regreened indocalamus leaves does not migrate in alkaline food, but it migrates in other five kinds of food varying in degrees, and the migration amount is the largest in soybean oil. The higher the copper content in regreen indocalamus leaves, the greater the amount of copper migration to food simulants. The use of regreened indocalamus leaves as food packaging materials has great food safety risks, and the risk of frozen regreened indocalamus leaves is much higher than that of cold fresh ones.

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LUO Hong-quan, LIU Li-ping, SHEN Hong-gui, WANG Ning, CHEN Hai-qun, CAI Ai-jun, XIE Jian-jian. Simulation on the Migration of Copper from Regreened Indocalamus Leaves to Different Food[J]. Packaging Engineering. 2023(23): 135-141 https://doi.org/10.19554/j.cnki.1001-3563.2023.23.016
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