Investigation of antinutritive components in Hungarian potato cultivars depending on production technology

Abstract

We have investigated the Total Glycoalcaloid (TGA), nitrite, and nitrate contents of some Hungarian and foreign potato cultivars in relation to the effect of different combination of fertilisers and green manure, late blight management strategies (none, programmed, or prediction based spraying), and irrigation regime for three years. The Hungarian cultivars have exotic potato species like S. acaule, S. demissum, S. stoloniferum, S. vernei, or S. tub. ssp. andigenum in their genetic background as sources of resistance genes. No effect of fertilisers or irrigation was found on the level of glycoalkaloids and nitrate contents, which were infl uenced mostly by the genotype and season. In conclusion, the absolute amount and the presence of different antinutritive components of potato tubers were infl uenced by the technology, genotype, and season in a complex manner. These results in general prove that ware potato production utilising intensive commercial agrotechnical practices and common cultivars is safe regarding the nitrate and TGA content of tubers.

Effects of organical and conventional growing on the content of biologically active compounds of potatoes

“…Currently there is no unanimous opinion about the impact of farming type on the antioxidant activity of potato tubers and the amounts of accumulated phenolic compounds, but it is known that accumulation of phenylpropanoids in potato tubers is stimulated by various abiotic and biotic factors (TÖMÖSKÖZI-FARKAS et al, 2014a;PINEROS-NINO et al, 2016). It is likely that organically grown potato tubers would accumulate higher amounts of phenylpropanoids (chlorogenic, caffeic, and other acids) with antioxidant activity, because without the use of chemical protection measures, the tubers would be more strongly infl uenced by such factors as pests and diseases, which stimulate the synthesis of these compounds.…”