干狗粮的矿物质组成：对营养的影响和潜在毒性。

Mineral Composition of Dry Dog Foods: Impact on Nutrition and Potential Toxicity.

机构信息

LAQV, REQUIMTE, Instituto de Ciências Biomédicas de Abel Salazar (ICBAS) , Universidade do Porto , Rua de Jorge Viterbo Ferreira no. 228 , 4050-313 Porto , Portugal.

LAQV, REQUIMTE, Departamento de Ciências Químicas, Faculdade de Farmácia , Universidade do Porto , Rua Jorge Viterbo Ferreira no. 228 , 4050-313 Porto , Portugal.

出版信息

J Agric Food Chem. 2018 Jul 25;66(29):7822-7830. doi: 10.1021/acs.jafc.8b02552. Epub 2018 Jul 11.

DOI:10.1021/acs.jafc.8b02552

PMID:29953228

Abstract

Detailed mineral profile of a selection of commercially available complete dry dog foods was determined using ICP-MS (Se, Cu, Mn, Zn, and nonessential trace elements), flame photometry (Na and K) and atomic and molecular spectrophotometry (Ca, P, Mg, and Fe). The contribution of ingredients to the mineral composition was correlated to the food market segment. Results showed an oversupply of essential elements due to the energy density effect on feed intake. Additives contributed from 40.8 to 55.1% to the total trace elements contents. With the exception of Se, all trace elements were supplied above the nutritional requirements of adult dogs. Legal limits of Cu, Se, and Zn were surpassed. The content of nonessential trace elements included values in the range of nanograms to micrograms per kg, without surpassing safe upper limits. This work brings awareness to the need to find supplementation strategies that ensure nutritional adequacy and avoid waste.

摘要

采用 ICP-MS（硒、铜、锰、锌和非必需微量元素）、火焰光度法（钠和钾）和原子和分子分光光度法（钙、磷、镁和铁）对商业上可获得的全干犬粮进行了详细的矿物质分析。将成分对矿物质组成的贡献与食品市场细分相关联。结果表明，由于饲料摄入量的能量密度效应，必需元素供应过剩。添加剂对总微量元素含量的贡献为 40.8%至 55.1%。除了硒，所有的微量元素都超过了成年犬的营养需求。铜、硒和锌的法定限量都超过了。非必需微量元素的含量包括每公斤纳克到微克的范围内，没有超过安全上限。这项工作引起了人们的注意，需要寻找补充策略，以确保营养充足并避免浪费。