4.6 Article

A Preliminary Investigation of Naturally Occurring Aluminum in Grains, Vegetables, and Fruits from Some Areas of China and Dietary Intake Assessment

Journal

JOURNAL OF FOOD SCIENCE
Volume 84, Issue 3, Pages 701-710

Publisher

WILEY
DOI: 10.1111/1750-3841.14459

Keywords

aluminum; dietary intake assessment; fruit; grain; vegetable

Funding

  1. National Health Commission of the People's Republic of China
  2. provincial disease control and prevention center in Jilin
  3. provincial disease control and prevention center in Shandong
  4. provincial disease control and prevention center in Hubei
  5. provincial disease control and prevention center in Hunan
  6. provincial disease control and prevention center in Guangxi
  7. provincial disease control and prevention center in Guangxi and Guangdong province
  8. State Administration of Grain
  9. Chinese Academy of Agricultural Sciences

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An investigation of the naturally occurring aluminum contents in grains, fruits and vegetables locally planted in some areas of China was conducted, and the aluminum dietary intake from the investigated food was estimated. A total of 2,469 samples were collected during 2013 to 2014 and tested for aluminum content using ICP-MS method. The results showed that although 77.6% of the samples contained aluminum less than 5 mg/kg, significant variations of aluminum contents were observed in different food groups. Generally, the aluminum contents were found to be relatively high in dried grains and fresh vegetables, and low in fresh fruits. The mean value of aluminum contents in grains was 6.3 mg/kg, with wheat being the highest, followed by soybean and corn. The fresh vegetables had an average aluminum content of 4.7 mg/kg, with leafy vegetables being the highest, followed by bulb and stem vegetables. Most varieties of fresh fruits were low in aluminum, with the mean of 1.3 mg/kg. Based on the food consumption data from the China National Nutrient and Health Survey, the average weekly dietary intake of naturally occurring aluminum from the investigated foods was estimated to be 0.62 mg/kg bw for the general population and 0.55 to 1.00 mg/kg bw for different age groups. Grains and vegetables were the main contributors to the overall intake. Evaluated against the provisional tolerable weekly intake (PTWI) of 2 mg/kg bw, the dietary naturally occurring aluminum intake from the investigated foods was considered to be no safety concern.

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