农业环境科学学报2025，Vol.44Issue(12)：3070-3081,12.DOI:10.11654/jaes.2025-0142
贵州核桃仁矿质元素迁移特征及营养和健康风险评价
Translocation and nutrition/health risks assessment of mineral elements in walnut kernel growing in Guizhou
摘要
Abstract
To investigate the migration characteristics of mineral nutrients and heavy metals in the soil-walnut kernel system,as well as the nutritional value and health risks of mineral elements in walnut kernels,this study determined the contents of mineral elements in 176 pairs of walnut kernels and their corresponding soil samples collected from 20 counties in Guizhou Province.The enrichment characteristics,nutritional value,and health risks of mineral elements in Guizhou walnut kernels were analyzed.Results showed that the average contents of Fe,Mn,Cu,Zn,Se in walnut kernels were 41.1,81.4,22.4,32.5,0.17 mg·kg-1,respectively,with migration capacities ordered as Cu＞Zn＞Mn＞Se＞Fe.Some walnut kernel samples exceeded the national standard the National Food Safety Standard—Maximum Levels of Contaminants in Foods(GB 2762-2022)safety limit for Pb in nuts and seeds(0.2 mg·kg-1),with an over standard rate of 0.6％.However,no significant correlation was observed between Pb content in these walnut kernels and their corresponding soils.Among soil samples,the percentages exceeding risk screening values for Pb,Cd,As,Cr,Hg were 0,56.8％,18.2％,14.8％,1.1％,respectively.The proportions exceeding risk control values for Cd and As were 10.8％and 2.3％,with migration capacities ordered as Cd＞Hg＞Cr＞Pb＞As.The average nutritional index(INQ)values for Cu and Mn in walnut kernels exceeded 2,while both single-element target hazard quotients(THQ)and multi-element hazard indices(HI)for heavy metals were below 1.The study indicates that walnut kernels from Guizhou contain abundant mineral nutrients and can serve as a potential dietary source for human intake of Cu and Mn,without posing significant heavy metal exposure risks.关键词
核桃仁/矿质元素/迁移特征/营养评价/健康风险评价Key words
walnut kernel/mineral elements/translocation characteristics/nutritional evaluation/health risk assessment分类
轻工纺织引用本文复制引用
卢香,黄安香,柏文恋,张智琦,李丹,杨守禄,周华..贵州核桃仁矿质元素迁移特征及营养和健康风险评价[J].农业环境科学学报,2025,44(12):3070-3081,12.基金项目
贵州省特色林业产业研究项目(XHTC-FW-2024-1380) （XHTC-FW-2024-1380）
贵州省林业科研项目(黔林科合[2025]19号) （黔林科合[2025]19号）
贵州省科技支撑计划项目(黔科合支撑[2021]一般130号) （黔科合支撑[2021]一般130号）
贵州省高层次创新型人才项目(黔科合平台人才-GCC[2023]066)Rural Industrial Revolution Characteristic Forestry Industry Program of Guizhou Province(XHTC-FW-2024-1380) （黔科合平台人才-GCC[2023]066）
Forestry Research Project of Guizhou Province([2025]19) （[2025]19）
Science and Technology Foundation of Guizhou Province([2021]130) （[2021]130）
Topquality Innovative Talents in Guizhou Province(GCC[2023]066) （GCC[2023]066）
