Probiotic supplementation continues to grow at a rapid pace as consumers learn more about the benefits that probiotics have to offer. When used in the formulation of foods, probiotics have the ability to increase bioavailability of certain micronutrients, including zinc and iron. A recent study published in BioFactors has determined that micronutrients, when taken in combination with certain probiotics, may boost the beneficial effects of the bacteria. The study looked specifically at the influence of selected micronutrients, phytochemical and dietary factors (including zinc, iron, quercetin, gallic acid, phytic acid and oxalic acid) on the growth of probiotics. Both quercetin and zinc sulphate showed positive effects for Lactobacillus acidophilus and other lactobacilli and bifidobacteria species. Researchers also observed that zinc sulphate, ferrous sulphate, quercetin and oxalic acid inhibit the growth of Escherichia coli, suggesting their presence might assist probiotics in the resistance against pathogens. As more studies will be needed to determine the exact clinical significance micronutrients have on probiotics, this study reinforces the great benefits of probiotics and suggests how probiotics in combination with other nutrients may boost those benefits even more.
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