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Yu Y, Lou S, Wang X, Lu S, Ma S, Li G, Feng Y, Zhang X, An T. Relationships between the bioavailability of polybrominated diphenyl ethers in soils measured with female C57BL/6 mice and the bioaccessibility determined using five in vitro methods. ENVIRONMENT INTERNATIONAL 2019; 123:337-344. [PMID: 30562705 DOI: 10.1016/j.envint.2018.12.022] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Revised: 12/11/2018] [Accepted: 12/11/2018] [Indexed: 06/09/2023]
Abstract
Several in vitro methods for simulating human gastrointestinal digestion have been validated for predicting the bioavailability of heavy metals, but the methods for successfully predicting the bioavailability of organic pollutants are still limited. In this study, we used an adapted fasting in vitro digestion method (Fa-VDM) from the Simulator of the Human Intestinal Microbial Ecosystem and four other in vitro methods comprising In Vitro Gastrointestinal, a physiologically-based extraction test, the unified BARGE method, and Deutsches Institut für Normung e.V. in order to measure the bioaccessibility of polybrominated diphenyl ethers (PBDEs) in soils from an e-waste dismantling town, China, with a Standard Reference Material (SRM2585) as the control. Furthermore, the bioaccessibility data were compared with the bioavailability measured using female C57BL/6 mice. The bioavailability of PBDEs in the soils and SRM2585 were 1.7% to 38.1% and 3.9% to 48.8%, respectively, and the bioaccessibility determined using Fa-VDM were 1.6-55.4% and 6.7-32.1%. There were negative and parabolic correlations between octanol/water partition coefficient for PBDEs and the bioavailability and bioaccessibility, respectively, whereas the H/C ratios and organic matter contents of the soils did not correlate with them. The bioaccessibility data determined by Fa-VDM were generally higher than those obtained using the other four methods, mainly due to the higher bile concentration and larger liquid to solid ratio in the digestion solution in Fa-VDM. There was a significant linear relationship between the results according to the in vivo and in vitro method of Fa-VDM where the slopes varied from 0.83 to 1.16 (R2 > 0.73) and intercepts from 0.3%-7.7% for BDE47, 99, 100, and 153 measured using Fa-VDM, thereby indicating that the bioaccessibility assessed by this method can potentially be used to predict the bioavailability of moderately brominated congeners in soils.
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Affiliation(s)
- Yingxin Yu
- Institute of Environmental Pollution and Health, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, PR China; Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, Guangdong, PR China
| | - Sufang Lou
- Institute of Environmental Pollution and Health, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, PR China
| | - Xinxin Wang
- Institute of Environmental Pollution and Health, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, PR China
| | - Shaoyou Lu
- Shenzhen Center for Disease Control and Prevention, Guangzhou 518055, PR China
| | - Shentao Ma
- Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, Guangdong, PR China
| | - Guiying Li
- Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, Guangdong, PR China
| | - Yan Feng
- Faculty of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, PR China
| | - Xinyu Zhang
- Faculty of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, PR China
| | - Taicheng An
- Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, Guangdong, PR China.
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Chen J, Tao X, Zhang M, Sun A, Zhao L. Properties and stability of blueberry anthocyanin--bovine serum albumin nanoparticles. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2014; 94:1781-1786. [PMID: 24302118 DOI: 10.1002/jsfa.6492] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2013] [Revised: 11/19/2013] [Accepted: 12/03/2013] [Indexed: 06/02/2023]
Abstract
BACKGROUND Since they would be easily decomposed under alkaline conditions, anthocyanins are likely to have poor oxidation stability. However, encapsulated with protein molecules, anthocyanins could be protected owing to the slowing down of the oxidation process. In this study, the characteristics of nanoparticles, formed by the interactions of anthocyanins with bovine serum albumin (BSA), and their impact on the oxidation stability of anthocyanins were investigated. RESULTS Both BSA and anthocyanin-bound BSA could form self-assembled nanoparticles in phosphate buffer (pH 7.4), and the particle size of anthocyanin-bound BSA (20-25 nm) was smaller than that of BSA (35-40 nm). The ratio of BSA to anthocyanin was 1:10. The radical scavenging rates of BSA-bound anthocyanin were lower than those of the unbound anthocyanin. No significant difference was seen in the stability between the unbound and BSA-bound anthocyanin in the simulated gastric system, whereas a difference was seen in the simulated intestinal system. The amount of unbound anthocyanin decreased by 70% after 6 h, while BSA-bound anthocyanin was almost unchanged. BSA exhibited a remarkable effect on the oxidation stability of anthocyanins. CONCLUSION BSA nanocarriers could improve the stability of anthocyanin under neutral conditions, which has great potential for applications.
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Affiliation(s)
- Jian Chen
- Department of Food Science and Engineering, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083, China; Beijing Key Laboratory of Forest Food Processing and Safety, Beijing Forestry University, Beijing, 100083, China
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Laird BD, Chan HM. Bioaccessibility of metals in fish, shellfish, wild game, and seaweed harvested in British Columbia, Canada. Food Chem Toxicol 2013; 58:381-7. [PMID: 23665408 DOI: 10.1016/j.fct.2013.04.033] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2012] [Revised: 03/26/2013] [Accepted: 04/15/2013] [Indexed: 11/17/2022]
Abstract
Fish, shellfish, wild game, and seaweed are important traditional foods that are essential to the physical and cultural well-being of Indigenous peoples in Canada. The goal of this study was to measure the concentration and bioaccessibility of As, Cd, Hg, Se, Cu and Mn in 45 commonly consumed traditional foods collected by harvested by the First Nations Food, Nutrition, and Environment Study (FNFNES) from 21 First Nations communities in British Columbia, Canada, in 2008-2009. A significant and negative correlation was observed between Hg concentration and Hg bioaccessibility. Metal bioaccessibility tended to be high; median values ranging between 52% (Mn) and 83% (Cu). The notable exceptions were observed for As in wild game organs (7-19%) and rabbit meat (4%) as well as Hg in salmon eggs (10%). Results of Principal Components Analysis confirmed the unique pattern of bioaccessibility of As and Hg in traditional foods, suggesting that, unlike other metals, As and Hg bioaccessibility are not simply controlled by food digestibility under the operating conditions of the in vitro model. These data provide useful information for dietary contaminant risk assessment and intake assessments of essential trace elements.
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Affiliation(s)
- Brian D Laird
- Centre for Advanced Research in Environmental Genomics, University of Ottawa, 30 Marie Curie, Ottawa, ON, Canada K1N 6N5
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