Khan Ariba, Talpur Farah Naz, Afridi Hassan Imran
National Centre of Excellence in Analytical Chemistry, University of Sindh, Jamshoro, 76080, Pakistan.
Biol Trace Elem Res. 2020 Apr;194(2):581-588. doi: 10.1007/s12011-019-01797-1. Epub 2019 Aug 5.
For physiological and biochemical studies, it is considered essential to have knowledge about the accumulation of mineral elements in plants and their distribution in different parts of the fruit and these data being essential for geographical origins of different food commodities. In the age of food industry globalization, the origin of food is essential to know for human health protection, to stimulate fine agronomic actions and to bar the use of toxic materials to stimulate plant's growth. This research work was formulated to assess the essential trace and toxic elements in Guar (Cyamopsis tetragonoloba) and guar gum cultivated in semi-arid regions of Sindh, Pakistan. For pretreatment of the guar samples, microwave-assisted acid digestion procedure (MAD) was developed for the elemental analysis in the guar samples. The validity of designed method was checked by using certified reference samples of BCR 189 whole meal flour. The digested specimens were analyzed by flame and graphite furnace atomic absorption spectrophotometry. The concentration of essential trace and toxic elements was found to be within the international level. In addition, human health Risk assessment was accessed by measuring daily intake of all understudy minerals, which was within permissible exposure limit set by USEPA & Health Canada. The Target Hazard Quotient (THQs) of guar and its gum were generally less than 1, as per USEPA; owing to these facts, food grade guar gum can be produced from guar cultivated in Thar, Pakistan.
对于生理生化研究而言，了解植物中矿质元素的积累及其在果实不同部位的分布被认为至关重要，而这些数据对于不同食品的地理来源也必不可少。在食品工业全球化的时代，了解食品的来源对于保护人类健康、促进良好的农艺措施以及禁止使用有毒物质刺激植物生长至关重要。本研究旨在评估巴基斯坦信德省半干旱地区种植的瓜尔豆（瓜尔豆属）和瓜尔胶中的必需微量元素和有毒元素。对于瓜尔豆样品的预处理，开发了微波辅助酸消解程序（MAD）用于瓜尔豆样品中的元素分析。通过使用BCR 189全麦粉认证参考样品来检验所设计方法的有效性。对消解后的样品进行火焰和石墨炉原子吸收光谱法分析。发现必需微量元素和有毒元素的浓度在国际水平范围内。此外，通过测量所有研究中的矿物质的每日摄入量来进行人体健康风险评估，该摄入量在由美国环境保护局和加拿大卫生部设定的允许暴露限值内。根据美国环境保护局的标准，瓜尔豆及其胶的目标危害商（THQs）通常小于1；基于这些事实，可以用巴基斯坦塔尔地区种植的瓜尔豆生产食品级瓜尔胶。
