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Cultivation of Solanum tuberosum in a former mining district for a safe human consumption integrating simulated digestion.

Journal of the science of food and agriculture (2017-05-10)
María José Sierra, Rubén López-Nicolás, Carlos A González-Bermúdez, Carmen Frontela-Saseta, Rocio Millán
ABSTRACT

Potato (Solanum tuberosum) is a global crop and by far the most important non-cereal crop in the world. Therefore, it is necessary to assure its safe consumption. This is especially relevant in the case of its cultivation in abandoned mining areas, where the population tends to return to agriculture. In the present work, the objective is to evaluate the contribution to the diet of nutrients and contaminants of potato grown in soils from the Almadén area (mining district) by studying the intestinal absorption (in vitro) of the tuber, taking into account the preparation methods for its consumption. The results of contaminant and nutrient contents show that the potato peel retains significantly more elements (mainly in the case of toxic elements) than the flesh. Furthermore, potato (peel and flesh) is a good source of iron. It is recommended to boil potatoes with the peel in order to minimize nutrient loss and, before consumption, peeling them to eliminate possible risks due to contaminants. In addition, to minimize the risk due of mercury and to improve the levels of calcium, magnesium, potassium and sodium, it is recommended to add salt during the boiling process. © 2017 Society of Chemical Industry.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Pancreatin from porcine pancreas, 4 × USP specifications
Millipore
Bile salts, suitable for microbiology