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Bibliographic record number: 779403

Journal

Authors: Obranović, Marko; Škevin, Dubravka; Kraljić, Klara; Pospišil, Milan; Neđeral, Sandra; Blekić, Monika; Putnik, Predrag
Title: Influence of climate, varieties and production process on tocopherols, plastochromanol-8 and pigments in flaxseed oil
Source: Food technology and biotechnology (1330-9862) 53 (2015), 4; 496-504
Paper type: kratko priopcenje
Keywords: flaxseed oil; variety; cold pressed; conditioning; tocopherols; plastochromanol-8; carotenoids; chlorophyll; climate
Abstract:
The objective of this study was to compare the influence of: genotype, environmental conditions and processing methods on levels of tocochromanols carotenoids and chlorophyll after maturation and harvesting in flaxseed oil from four varieties (Altess, Biltstar, Niagara and Oliwin). Oils were produced by cold pressing of dry seeds and seeds that were heated for 30 min at 60 °C. Temperature, sunshine and rainfall were primary environmental conditions included. Grand mean for γ-tocopherol was (522±29) mg/kg of oil, for plastochromanol-8 was (305±2) mg/kg of oil and total tocochromanols (831±3) mg/kg of oil. The highest levels and strongest antioxidant activity were found with cold pressed oil from variety Biltstar. Levels of γ-tocopherol and plastochromanol-8, increased with average temperature and total sunshine during seed maturation and decreased with total rainfall during seed maturation. Fifth week after flowering was identified as maturation period with best climate conditions to achieve optimal tocochromanol content. Grand mean for carotenoids was (1.83±0.01) mg/kg of oil, and chlorophyll (0.43±0.10) mg/kg of oil. Variety Altess had the highest levels of pigments. Antioxidant activity decreased with increase of chlorophyll, while correlations with carotenoids were not determined. Generally, oils obtained by cold pressing had higher levels of tocochromanols but lower values of pigments than oils after seed conditioning with similar antioxidant activity. The results from this study contribute to identifying the best flaxseed variety with regards to oil production and the highest antioxidant activity and nutritive value, and provide better understanding of tocochromanol biosynthesis in regard to different climate conditions.
Project / theme: 058-0580696-0704
Original language: ENG
Citation databases: Current Contents Connect (CCC)
Scopus
SCI-EXP, SSCI i/ili A&HCI
Science Citation Index Expanded (SCI-EXP) (sastavni dio Web of Science Core Collectiona)
Category: Znanstveni
Research fields:
Food processing technology
Full paper text: 779403.Influence_of_climate_varieties_and_production_process_on_tocopherols.pdf
URL: http://www.ftb.com.hr/images/InPress/4252-in%20press.pdf
Broj citata:
Altmetric:
DOI: 10.17113/ftb.53.04.15.4252.
URL cjelovitog rada:
Google Scholar: Influence of climate, varieties and production process on tocopherols, plastochromanol-8 and pigments in flaxseed oil
Contrib. to CROSBI by: Marko Obranović (mobran@pbf.hr), 2. Lis. 2015. u 11:42 sati



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