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Determination of sterol and fatty acid compositions, oxidative stability, and nutritional value of six walnut (Juglans regia L.) cultivars grown in Portugal.
J Agric Food Chem. 2003 Dec 17; 51(26):7698-702.JA

Abstract

Six cultivars (Franquette, Marbot, Mayette, Mellanaise, Lara, and Parisienne) of walnuts (Juglans regia L.) were collected during the 2001 crop, from Bragança, Portugal. Chemical composition, including moisture, total oil content, crude protein, ash, carbohydrates, and nutritional value, was evaluated. Fat was the predominant component, ranging from 62.3 to 66.5%. Total oil was extracted and analyzed for fatty acids, sterols, oxidative stability, and peroxide value. Fatty acids and sterols were determined by gas-liquid chromatography coupled to a flame ionization detector. Eighteen fatty acids were quantified. Polyunsaturated fatty acids and, in particular, linoleic acid were predominant. Beta-Sitosterol, delta(5)-avenasterol, and campesterol were the major sterols found. Differences were observed among the studied cultivars, especially in peroxide values and in the sterol profile.

Authors+Show Affiliations

Amaral JS
REQUIMTE, Serviços de Farmacognosia and Bromatologia, Faculdade de Farmácia, Universidade do Porto, R Aníbal Cunha 164, 4050-047 Porto, Portugal.
Casal S
No affiliation info available
Pereira JA
No affiliation info available
Seabra RM
No affiliation info available
Oliveira BP
No affiliation info available

MeSH

CarbohydratesChromatography, GasFatty AcidsJuglansNutritive ValueNutsOxidation-ReductionPhytosterolsPlant OilsPlant ProteinsPortugal

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

14664531

Citation

Amaral, Joana S., et al. "Determination of Sterol and Fatty Acid Compositions, Oxidative Stability, and Nutritional Value of Six Walnut (Juglans Regia L.) Cultivars Grown in Portugal." Journal of Agricultural and Food Chemistry, vol. 51, no. 26, 2003, pp. 7698-702.
Amaral JS, Casal S, Pereira JA, et al. Determination of sterol and fatty acid compositions, oxidative stability, and nutritional value of six walnut (Juglans regia L.) cultivars grown in Portugal. J Agric Food Chem. 2003;51(26):7698-702.
Amaral, J. S., Casal, S., Pereira, J. A., Seabra, R. M., & Oliveira, B. P. (2003). Determination of sterol and fatty acid compositions, oxidative stability, and nutritional value of six walnut (Juglans regia L.) cultivars grown in Portugal. Journal of Agricultural and Food Chemistry, 51(26), 7698-702.
Amaral JS, et al. Determination of Sterol and Fatty Acid Compositions, Oxidative Stability, and Nutritional Value of Six Walnut (Juglans Regia L.) Cultivars Grown in Portugal. J Agric Food Chem. 2003 Dec 17;51(26):7698-702. PubMed PMID: 14664531.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Determination of sterol and fatty acid compositions, oxidative stability, and nutritional value of six walnut (Juglans regia L.) cultivars grown in Portugal. AU - Amaral,Joana S, AU - Casal,Susana, AU - Pereira,José A, AU - Seabra,Rosa M, AU - Oliveira,Beatriz P P, PY - 2003/12/11/pubmed PY - 2004/1/22/medline PY - 2003/12/11/entrez SP - 7698 EP - 702 JF - Journal of agricultural and food chemistry JO - J Agric Food Chem VL - 51 IS - 26 N2 - Six cultivars (Franquette, Marbot, Mayette, Mellanaise, Lara, and Parisienne) of walnuts (Juglans regia L.) were collected during the 2001 crop, from Bragança, Portugal. Chemical composition, including moisture, total oil content, crude protein, ash, carbohydrates, and nutritional value, was evaluated. Fat was the predominant component, ranging from 62.3 to 66.5%. Total oil was extracted and analyzed for fatty acids, sterols, oxidative stability, and peroxide value. Fatty acids and sterols were determined by gas-liquid chromatography coupled to a flame ionization detector. Eighteen fatty acids were quantified. Polyunsaturated fatty acids and, in particular, linoleic acid were predominant. Beta-Sitosterol, delta(5)-avenasterol, and campesterol were the major sterols found. Differences were observed among the studied cultivars, especially in peroxide values and in the sterol profile. SN - 0021-8561 UR - https://www.unboundmedicine.com/medline/citation/14664531/Determination_of_sterol_and_fatty_acid_compositions_oxidative_stability_and_nutritional_value_of_six_walnut__Juglans_regia_L___cultivars_grown_in_Portugal_ DB - PRIME DP - Unbound Medicine ER -