Influence of Cultivar and Environmental Conditions on the Triacylglycerol Profile of Hazelnut (Corylus avellana L.)

Abstract

The oil of several hazelnut (Corylus avellana L.) samples was extracted and evaluated for their triacylglycerol (TAG) composition. Trials were conducted in two Portuguese localities (Vila Real and Felgueiras) during three consecutive years and involved a total of 19 cultivars. The samples were analyzed by reversed-phase high-performance liquid chromatography with evaporative light-scattering detection. Sample preparation was fast and simple, consisting only of the dissolution of the oil in acetone, homogenization, and filtration, allowing this technique to be suitable for routine analyses. All samples presented a similar qualitative profile composed of eleven compounds: LLL, OLL, PLL, OOL, POL, PPL, OOO, POO, PPO, SOO and PSO (P, palmitoyl; S, stearoyl; O, oleoyl; and L, linoleoyl). The main components were OOO, LOO, and POO, reflecting the high content of oleic acid in hazelnut oils. A total of 79 different samples were studied, and the obtained data were statistically analyzed. Significant differences were verified in canonical variate plots when cultivars were grouped by country of origin. In general, the American cultivars were richer in TAGs with saturated fatty acids moieties, and the group of French, German, and English cultivars was richer in TAGs containing linoleic acid moieties. Differences were also significant when cultivars were grouped by year of production, showing that besides genetic factors, the TAG composition can be influenced by environmental factors.

Physicochemical properties of Malaysian-grown tropical almond nuts (Terminalia catappa)

“…However, Monnet et al (2012) revealed that palmitic acid (37.26 %) was the most abundant fatty acid in seed oil from T. catappa fruits followed by oleic (32.40 %) and linoleic (24.65 %) acids, with smaller amount of stearic (5.55 %), linolenic (0.55 %), palmitoleic (0.41 %), myristic (0.17 %) and lauric (trace) acids. The differences between the findings might be due to variety/cultivar (genetic factors), environmental factors such as the year of production and growing location, climate and mainly maturity stage are cited as factors affecting the relative fatty acid composition (Amaral et al 2006;Venkatachalam and Sathe 2006;Canellas 1986;Mehran and Filsoof 1974).…”

Chemical composition, and antioxidant and antimicrobial activities of three hazelnut (Corylus avellana L.) cultivars

“…In fact, there are evidences that harvesting year and orchard location can influence the chemical composition of hazelnuts (Parcerisa et al, 1995;Amaral et al, 2006c).…”

Nut and kernel traits and chemical composition of hazelnut (Corylus avellana L.) cultivars

“…20,21 Furthermore, the results are generally derived from one-year analysis, and only in a few cases has the effect of seasonal variability on seed composition been considered. 22 In order to study the effect of cultivar and year on nut composition and quality, 24 Italian and foreign cultivars grown in a collection in Viterbo province (Italy) were analysed over the period 2002-2004 for nut and kernel traits and kernel chemical composition.…”