Published in Scientific Papers. Series B, Horticulture, Vol. LXVIII, Issue 1
Written by Carmen Mihaela TOPALA, Mihaela Elena LEITNER, Loredana Elena VIJAN, Mihai BOTU
Lipids are an important group of compounds that provide several biological functions such as: energy storage, cell membrane structure, and signaling. This study has the aims to investigate the total lipid content of fruits belonging to temperate nut crops like walnut (Juglans regia L.), pecan (Carya illinoinensis), and hazelnut (Corylus avellana L.) using the extraction method based on different solvents. The analyzed kernels were collected from six walnut accessions ('Valcor', 'Jupâneşti', 'VL 51 B', 'Payne', 'Lara', and 'Franquette'), one pecan hybrid selection (H 21-13 - 2008) and six hazelnut cultivars ('Valcea 22', 'Romavel', 'Ennis', 'Daviana', 'Du Chilly', and 'Purple Filbert'), all from the germplasm collections of Fruit Growing Research and Extension Station (SCDP) Valcea. The FTIR spectroscopy using attenuated total reflectance and suitable variables (absorbance values at certain wavenumbers) of nut oil samples was utilized at frequency regions of 4000-400 cm-1. The colorimetric sulfo-phospho-vanillin method developed by Van Handel (1985) was used in order to determinate the total lipid content. The results obtained after analyzing the nut kernels emphasized inter- and intraspecific variation depending on the genotype and the solvent used.
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