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. 2023 Dec 12;12(24):4453.
doi: 10.3390/foods12244453.

In Vitro Assessment of the Bioaccessibility of Zn, Ca, Mg, and Se from Various Types of Nuts

Justyna Moskwa  1 , Sylwia Katarzyna Naliwajko  1 , Anna Puścion-Jakubik  1 , Jolanta Soroczyńska  1 , Katarzyna Socha  1 , Wojciech Koch  2 , Renata Markiewicz-Żukowska  1
Affiliations

In Vitro Assessment of the Bioaccessibility of Zn, Ca, Mg, and Se from Various Types of Nuts

Justyna Moskwa et al. Foods. .

Abstract

The bioaccessibility of zinc (Zn), calcium (Ca), magnesium (Mg), and selenium (Se) from various nuts (Brazil nuts, walnuts, peanuts, almonds, cashews, pecans, hazelnuts, macadamia nuts, and pistachios) was assessed using a simulated two-phase model of enzymatic digestion in vitro. The levels of Zn, Mg, and Ca were determined by atomic absorption spectrometry, and Se was measured by inductively coupled plasma-mass spectrometry. All tested nuts were good sources of Mg, and most, except macadamia nuts, were also good sources of Zn (the standard portion covers over 15% of NRV-R (UE) 1924/2006). Brazil nuts had the highest Se content. Almonds and Brazil nuts were rich in Ca. Se demonstrated the highest bioaccessibility from nuts (27.7% to 70.65%), whereas Ca exhibited the lowest bioaccessibility (below 9%). Pistachios had the highest Zn bioavailability, while cashews excelled in Mg bioaccessibility. Macadamia and pistachios were top for Ca bioaccessibility, and Brazil nuts for Se. Bioaccessibility is positively correlated with fat (for Zn: r = 0.23), carbohydrates (for Mg: 0.44; for Ca: 0.35), and sugar content (for Zn: r = 0.36; for Mg: 0.46; for Ca: 0.40).

Keywords: calcium; edible nuts; in vitro bioaccessibility; magnesium; selenium; zinc.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
In vitro digestion procedure.
Figure 2
Figure 2
Coverage (in %) of the nutrient reference value (NRV) for Zn, Mg, Ca, and Se for an adult through the consumption of 100 g of nuts.
See this image and copyright information in PMC

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