Masum Akond A S M Golam, Crawford Heath, Berthold Janelle, Talukder Zahirul I, Hossain Khwaja
Division of Science and Mathematics, Mayville State University, ND, USA.
Am J Food Technol. 2011;6(3):235-243. doi: 10.3923/ajft.2011.235.243.
In this study, the variation of zinc (Zn), iron (Fe), calcium (Ca) and magnesium (Mg) and the interference of phytic acid (PA) on their availability was investigated in 29 US grown and CIAT breeding genotypes of common bean. Fe levels showed the highest variation (8.9-112.9 mg kg) followed by Ca (58.67-122.98 mg kg) and Zn (30.90-64.60 mg kg) while variability of Mg concentration (6.47-11.05 mg kg) is the least among the mineral components. PA showed a wide range of variability (12.52-316.42 m kg) and inversely correlated with Fe, Ca and Mg concentrations. The results of the minerals and PA concentration can be interpreted in terms of expected bio-availability of minerals and the correlation study indicated that the presence of high concentration of PA inhibit the availability of most minerals under study in common beans. We suggest that the genotypes, MIB466, MIB465, MIB152 and JaloEEP 558 could be considered as sources of high Zn and Vista and NUA56-1770 for high seed Fe. We also identified G122 for high Ca and JaloEEP558 genotype for high Mg. We conclude that there is scope for the enhancement of mineral contents of common bean by selecting suitable genotype and bean products require processing for dephytinization for the improvement of mineral availability.
在本研究中，对29种美国种植的和国际热带农业中心（CIAT）培育的菜豆基因型进行了锌（Zn）、铁（Fe）、钙（Ca）和镁（Mg）含量的变化以及植酸（PA）对其有效性干扰的研究。铁含量的变化最大（8.9 - 112.9毫克/千克），其次是钙（58.67 - 122.98毫克/千克）和锌（30.90 - 64.60毫克/千克），而镁浓度的变异性（6.47 - 11.05毫克/千克）在矿物质成分中最小。植酸表现出广泛的变异性（12.52 - 316.42毫克/千克），并且与铁、钙和镁的浓度呈负相关。矿物质和植酸浓度的结果可以根据矿物质的预期生物有效性来解释，相关性研究表明，高浓度植酸的存在会抑制菜豆中大多数所研究矿物质的有效性。我们建议，基因型MIB466、MIB465、MIB152和JaloEEP 558可被视为高锌来源，Vista和NUA56 - 1770可作为高铁种子来源。我们还鉴定出G122为高钙基因型，JaloEEP558基因型为高镁基因型。我们得出结论，通过选择合适的基因型来提高菜豆矿物质含量具有空间，并且豆类产品需要进行脱植酸处理以提高矿物质的有效性。
