Coffee Infusions: Can They Be a Source of Microelements with Antioxidant Properties?

Abstract

Coffee is a beverage that is very popular all over the world. Its pro-health effect has been demonstrated in many publications. This drink can counteract the effects of oxidative stress thanks to its antioxidant properties. The aim of this study was to collect data on the content of microelements with antioxidant activity (manganese, zinc, copper, iron) in coffee infusions, taking into account various factors. The study considered publications from the years 2000–2020 found in Google Scholar and PubMed databases. It was noted that coffee can provide up to 13.7% of manganese requirements per serving, up to 4.0% and 3.1% of zinc requirements for women and men, up to 2.7% and 2.1% of copper requirements for women and men, and up to 0.4% and 0.6% of iron requirements for women and men. Coffee infusions can also be a source of fluoride (up to 2.5%), chromium (up to 0.4% of daily intake for women and 0.2% for men), and cobalt (up to 0.1%). There are no data in the literature regarding the content of selenium in coffee infusions. The origin of coffee beans and the type of water used (especially regarding fluoride) may have an impact on the content of minerals in infusions. The brewing method does not seem to play an important role. As it is a very popular beverage, coffee can additionally enrich the diet with such micronutrients as manganese, zinc, and copper. This seems beneficial due to their antioxidant properties, however the bioavailability of these elements of coffee should be taken into account. It seems necessary to carry out more research in this area.

The Effect of Diet and Lifestyle on the Course of Diabetic Retinopathy—A Review of the Literature

“…The main commercial coffee blends are Arabica ( Coffea arabica L.) and Robusta ( Coffea canephora Pierre ex Froehner) [ 65 ]. Its main component is caffeine, which belongs to antioxidants, and its long-term intake in large quantities reduces oxidative stress [ 66 ]. Other components of coffee beans include carbohydrates, proteins, fats, alkaloids, diterpenes, free amino acids, melanoides and minerals and both macro- and microelements [ 67 ].…”

“…Other components of coffee beans include carbohydrates, proteins, fats, alkaloids, diterpenes, free amino acids, melanoides and minerals and both macro- and microelements [ 67 ]. Coffee contains microelements that show antioxidant effects, such as manganese, zinc, copper and iron [ 66 ]. It can also be a source of fluorine, chromium and cobalt [ 66 ].…”

“…Coffee contains microelements that show antioxidant effects, such as manganese, zinc, copper and iron [ 66 ]. It can also be a source of fluorine, chromium and cobalt [ 66 ].…”

Metabolomics-Based Approach for Coffee Beverage Improvement in the Context of Processing, Brewing Methods, and Quality Attributes

“…Han et al, showed that coffee brewed for 3 h contained the lowest acrylamide levels, while steeping and dripping featured the lowest furan levels after 24 h and 12 h, respectively [ 64 ]. The effect of coffee brewing on microelement composition appears conflicting though, and likely is not significantly influenced by the brewing method, warranting further studies [ 70 ]. Janda et al have reported recently that coffee beverages prepared by simple infusion and AeroPress were rich in magnesium (116.3 mg/L), manganese (0.6 mg/L), chromium (0.03 mg/L), cobalt (0.01 mg/L), and potassium (1540.7 mg/L), while the drip brew contained a valuable silicon content (3.4 mg/L) [ 71 ].…”

The Effect of Hyperlipidemia on the Course of Diabetic Retinopathy—Literature Review

“…Two diterpenes, cafestol and kahwoel, present in coffee oil, are the main cholesterol-raising compounds in coffee; however, they are mostly removed using paper filters. Therefore, unfiltered coffee is a source of diterpenes, whereas filtered coffee does not increase serum cholesterol much [ 89 ].…”