Abstract
Hydroxycinnamic acids are phenolic compounds and are considered to have health promotion properties due to their antioxidant activity. Potato tubers of 113 genotypes of Solanum tuberosum group Phureja belonging to the Colombian Central Collection, landraces of potatoes, and commercial cultivars were evaluated for their hydroxycinnamic acids content. The composition of these compounds was analyzed using cooked tubers in two different agro‐climatic conditions. The genotypes were analyzed for chlorogenic acid, neo‐chlorogenic acid, crypto‐chlorogenic acid, and caffeic acid by ultrahigh‐performance liquid chromatography (UHPLC). Chlorogenic acid was the major representative and varied between 0.77 to 7.98 g kg−1 DW (dry weight) followed by crypto‐chlorogenic acid (from 0.09 to 1.50 g kg−1 DW). Under moorland agro‐climatic conditions even though the chlorogenic acid levels increased with respect to flatland agro‐climatic conditions, the related isomer neo‐chlorogenic acid decreased as compared to flatland conditions. The correlation between chlorogenic acid with the isomers, and with caffeic acid was positive. This study demonstrated that there is a wide variation in hydroxycinnamic acids contents in the germplasm studied, which can be exploited in breeding programs to contribute to human health.
Highlights
Potato (Solanum tuberosum L.) has one of the richest genetic resources of any cultivated plant, (De Haan et al 2013) and is produced in many environments, under both natural and cultivated conditions (Hawkes 1990)
High phenolic contents discovered in domesticated Andean potato landraces have been used in conventional breeding and biotechnological approaches, (Spooner et al 2005) to develop new cultivars with higher levels of hydroxycinnamic acids (e. g., chlorogenic acid), flavonols (e. g., rutin), and anthocyanins (e. g., petanin) (Shakya and Navarre 2006; Rommens et al 2008; Navarre et al 2010; Burgos et al 2013; Devaux et al 2014)
The aim of this research was to determine the concentration of the main hydroxycinnamic acids present in cooked tubers of S. tuberosum group Phureja belonging to Central Collection (CCC), landraces of potatoes from Nariño province, and commercial cultivars, as well as to evaluate the effect of two different locations on the concentration of the aforementioned compounds in eight selected potato genotypes from group Phureja
Summary
Potato (Solanum tuberosum L.) has one of the richest genetic resources of any cultivated plant, (De Haan et al 2013) and is produced in many environments, under both natural and cultivated conditions (Hawkes 1990). Potato is a staple food in many regions of the world, being the third crop worldwide, and provide important quantities of high-quality protein, vitamins, minerals, fiber (Clayton and Percival 2000; Andre et al 2007; Nassar et al 2012; Peña et al 2015) phenolic compounds, and carotenoids, with important nutritional and bio-active value Navarre et al 2011; Camire et al 2009. The nutritional components of potato significantly change among potato genotypes High phenolic contents discovered in domesticated Andean potato landraces have been used in conventional breeding and biotechnological approaches, (Spooner et al 2005) to develop new cultivars with higher levels of hydroxycinnamic acids High phenolic contents discovered in domesticated Andean potato landraces have been used in conventional breeding and biotechnological approaches, (Spooner et al 2005) to develop new cultivars with higher levels of hydroxycinnamic acids (e. g., chlorogenic acid), flavonols (e. g., rutin), and anthocyanins (e. g., petanin) (Shakya and Navarre 2006; Rommens et al 2008; Navarre et al 2010; Burgos et al 2013; Devaux et al 2014)
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