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Food Chem

Title:		"Content of carotenoids, tocopherols, sterols, triterpenic and aliphatic alcohols, and volatile compounds in six walnuts (Juglans regia L.) varieties"
Author(s):		Abdallah IB; Tlili N; Martinez-Force E; Rubio AG; Perez-Camino MC; Albouchi A; Boukhchina S;
Address:		"Laboratoire de Biochimie des Lipides, Departement de Biologie, Universite de Tunis El Manar, 2092 Tunis, Tunisia. Electronic address: ikrambouabdallah@yahoo.fr. Laboratoire de Biochimie des Lipides, Departement de Biologie, Universite de Tunis El Manar, 2092 Tunis, Tunisia. Instituto de la Grasa, Consejo Superior de Investigaciones Cientificas (CSIC), 41012 Sevilla, Spain. Institut National de Recherches en Genie Rural, Eaux et Forets (INRGREF), Tunis, Tunisia"
Journal Title:		Food Chem
Year:		2015
Volume:		20141025
Issue:
Page Number:		972 - 978
DOI:		10.1016/j.foodchem.2014.10.095
ISSN/ISBN:		1873-7072 (Electronic) 0308-8146 (Linking)
Abstract:		"The aim of this work was to study the content of tocopherols, sterols, triterpenic and aliphatic alcohols, carotenoids, and volatile compounds in the kernel oils from six walnut (Juglans regia L.) varieties. The levels of beta-carotene ranged between 0.22 and 0.62 mg/kg, followed by lutein (0.01-0.06 mg/kg). The total content of tocopherol ranged from 186.5 to 436.2 mg/kg of the extracted oil and the major isoform in all samples was gamma-tocopherol. The most abundant phytosterol was beta-sitosterol (974-1494 mg/kg) followed by campesterol then Delta-5-avenasterol. The major triterpenic alcohol was cycloartenol (226.4-532.1 mg/kg). Hexacosanol (9.71-28.15 mg/kg) was the major aliphatic alcohol. The detected volatile compounds were pentanal, hexanal, nonanal, 2-decenal and hexanol. The statistical analysis showed significant differences between varieties, which are probably due to genetic factors"
Keywords:		Carotenoids/*analysis Juglans/*chemistry Sterols/*analysis Tocopherols/*analysis Vitamin E/analysis Volatile Organic Compounds/analysis beta Carotene/analysis Carotenoids Juglans regia L.Phytosterol Tocopherol Triterpenic and aliphatic alcohols Volatile;
Notes:		"MedlineAbdallah, Ikram Bou Tlili, Nizar Martinez-Force, Enrique Rubio, Ana Gracia Perez Perez-Camino, Maria Carmen Albouchi, Ali Boukhchina, Sadok eng Research Support, Non-U.S. Gov't England 2014/12/04 Food Chem. 2015 Apr 15; 173:972-8. doi: 10.1016/j.foodchem.2014.10.095. Epub 2014 Oct 25"