Primary and secondary metabolites in fruits
2012
Veberič, Robert (Biotechnical Faculty, Ljubljana (Slovenia). Agronomy Department, Chair for fruit) | Slatnar, Ana (Biotechnical Faculty, Ljubljana (Slovenia). Agronomy Department, Chair for fruit) | Jakopič, Jerneja (Biotechnical Faculty, Ljubljana (Slovenia). Agronomy Department, Chair for fruit) | Štampar, Franci (Biotechnical Faculty, Ljubljana (Slovenia). Agronomy Department, Chair for fruit) | Mikulič-Petkovšek, Maja (Biotechnical Faculty, Ljubljana (Slovenia). Agronomy Department, Chair for fruit)
Plant primary and secondary metabolites can determine fruit inner and outer quality parameters. In our study we have analysed influence of different factors on the content of selected sugars, organic acids and phenolics in different plant species. We have showed that the content of metabolites can vary to a large amount between plant species and cultivars. Phenolic profiles can even be used to identify certain species, even cultivars. Differences can appear between different organs or even tissue as well. Outer tissue of fruits or seeds of different varieties contain much higher amounts of phenolics compared to inner parts of fruits. Cultural practices as well as ecological parameters can be an important trigger for different synthetic pathways. Especially the biosynthesis of secondary compounds is affected by stress stimulations like wounding or pathogen attack. We noticed incensement of certain phenolics after the infection of the leaves and fruit with the apple scab. Therefore, there is a growing interest in analytical data on fruit chemical composition due to health promoting properties as well as commercial benefits.
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