Tags

Type your tag names separated by a space and hit enter

Chemical characterization of chestnut cultivars from three consecutive years: chemometrics and contribution for authentication.
Food Chem Toxicol. 2012 Jul; 50(7):2311-7.FC

Abstract

Four Castanea sativa Miller cultivars (Aveleira, Boaventura, Judia and Longal) belonging to the Protected Designation of Origin "Castanha da Terra Fria", from the Northeast of Portugal, were selected in 2006, 2007 and 2008. Their nutritional, fatty acids, triacylglycerols and tocopherols profiles were evaluated. Water was the major component, followed by carbohydrates, protein and fat, with energetic values lower than 190 kcal/100g of fresh fruit. Oleic, linoleic and palmitic were the major fatty acids, 1-oleoyl-2-linoleoyl-3-linoleoyl-sn-glycerol, 1-linoleoyl-2-linoleoyl-3-palmitoyl-sn-glycerol, 1-oleoyl-2-linoleoyl-3-oleoyl-sn-glycerol and 1-linoleoyl-2-oleoyl-3-palmitoyl-sn-glycerol were the prevalent triacylglycerols and γ-tocopherol was the most abundant tocopherol. In each parameter, differences between cultivars, harvest year and the possible cultivar × year interaction were screened through a two-way analysis of variance. Differences among cultivars have been attenuated by the variability among years, leading, in general, to a significant interaction effect, which resulted in a relative homogeneity regarding chemical parameters, showing that nutritional and chemical composition was influenced by seasonal variability. A stepwise linear discriminant model, based on 10 (α-tocopherol, γ-tocotrienol, LLL, OLLn, δ-tocopherol, γ-tocopherol, δ-tocotrienol, PLLn, protein and OOO) of the 38 initial evaluated variables was also established. The model allowed the complete discrimination of cultivars with overall sensibilities and specificities of 100%, for both original grouped data and leave-one-out cross-validation procedures. Furthermore, similar results were also obtained using only tocopherols data, showing their usefulness as a discriminant factor for chestnut cultivars.

Links

Publisher Full Text

Authors+Show Affiliations

Barreira JC
CIMO-Escola Superior Agrária, Instituto Politécnico de Bragança, Campus de Sta. Apolónia, Apartado 1172, 5301-855 Bragança, Portugal.
Casal S
No affiliation info available
Ferreira IC
No affiliation info available
Peres AM
No affiliation info available
Pereira JA
No affiliation info available
Oliveira MB
No affiliation info available

MeSH

Chromatography, GasDiscriminant AnalysisFagaceaeFatty AcidsNutritive ValueThermodynamicsTocopherolsTocotrienolsTriglycerides

Pub Type(s)

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

Language

eng

PubMed ID

22525865

Citation

Barreira, João C M., et al. "Chemical Characterization of Chestnut Cultivars From Three Consecutive Years: Chemometrics and Contribution for Authentication." Food and Chemical Toxicology : an International Journal Published for the British Industrial Biological Research Association, vol. 50, no. 7, 2012, pp. 2311-7.
Barreira JC, Casal S, Ferreira IC, et al. Chemical characterization of chestnut cultivars from three consecutive years: chemometrics and contribution for authentication. Food Chem Toxicol. 2012;50(7):2311-7.
Barreira, J. C., Casal, S., Ferreira, I. C., Peres, A. M., Pereira, J. A., & Oliveira, M. B. (2012). Chemical characterization of chestnut cultivars from three consecutive years: chemometrics and contribution for authentication. Food and Chemical Toxicology : an International Journal Published for the British Industrial Biological Research Association, 50(7), 2311-7. https://doi.org/10.1016/j.fct.2012.04.008
Barreira JC, et al. Chemical Characterization of Chestnut Cultivars From Three Consecutive Years: Chemometrics and Contribution for Authentication. Food Chem Toxicol. 2012;50(7):2311-7. PubMed PMID: 22525865.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Chemical characterization of chestnut cultivars from three consecutive years: chemometrics and contribution for authentication. AU - Barreira,João C M, AU - Casal,Susana, AU - Ferreira,Isabel C F R, AU - Peres,António M, AU - Pereira,José Alberto, AU - Oliveira,M Beatriz P P, Y1 - 2012/04/16/ PY - 2012/01/23/received PY - 2012/03/19/revised PY - 2012/04/04/accepted PY - 2012/4/25/entrez PY - 2012/4/25/pubmed PY - 2012/10/13/medline SP - 2311 EP - 7 JF - Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association JO - Food Chem Toxicol VL - 50 IS - 7 N2 - Four Castanea sativa Miller cultivars (Aveleira, Boaventura, Judia and Longal) belonging to the Protected Designation of Origin "Castanha da Terra Fria", from the Northeast of Portugal, were selected in 2006, 2007 and 2008. Their nutritional, fatty acids, triacylglycerols and tocopherols profiles were evaluated. Water was the major component, followed by carbohydrates, protein and fat, with energetic values lower than 190 kcal/100g of fresh fruit. Oleic, linoleic and palmitic were the major fatty acids, 1-oleoyl-2-linoleoyl-3-linoleoyl-sn-glycerol, 1-linoleoyl-2-linoleoyl-3-palmitoyl-sn-glycerol, 1-oleoyl-2-linoleoyl-3-oleoyl-sn-glycerol and 1-linoleoyl-2-oleoyl-3-palmitoyl-sn-glycerol were the prevalent triacylglycerols and γ-tocopherol was the most abundant tocopherol. In each parameter, differences between cultivars, harvest year and the possible cultivar × year interaction were screened through a two-way analysis of variance. Differences among cultivars have been attenuated by the variability among years, leading, in general, to a significant interaction effect, which resulted in a relative homogeneity regarding chemical parameters, showing that nutritional and chemical composition was influenced by seasonal variability. A stepwise linear discriminant model, based on 10 (α-tocopherol, γ-tocotrienol, LLL, OLLn, δ-tocopherol, γ-tocopherol, δ-tocotrienol, PLLn, protein and OOO) of the 38 initial evaluated variables was also established. The model allowed the complete discrimination of cultivars with overall sensibilities and specificities of 100%, for both original grouped data and leave-one-out cross-validation procedures. Furthermore, similar results were also obtained using only tocopherols data, showing their usefulness as a discriminant factor for chestnut cultivars. SN - 1873-6351 UR - https://www.unboundmedicine.com/medline/citation/22525865/Chemical_characterization_of_chestnut_cultivars_from_three_consecutive_years:_chemometrics_and_contribution_for_authentication_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0278-6915(12)00290-6 DB - PRIME DP - Unbound Medicine ER -