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Bibliographic record number: 611216


Authors: Kraljić, Klara; Škevin, Dubravka; Pospišil, Milan; Obranović, Marko; Neđeral, Sandra; Bosolt, Tina
Title: Quality of rapeseed oil produced by conditioning seeds at modest temperatures
Source: Journal of the American Oil Chemists' Society (0003-021X) 90 (2013), 4; 589-599
Paper type: article
Keywords: rapeseed oil; conditioning; pressing; fatty acids; sterols; tocopherols; phenols; canolol
Conditioning rapeseed can significantly increase the amount of bioactive compounds in the crude oil, but if the conditioning temperatures are too high, they can cause unwanted side effects such as darker color and sensory defects. Modest conditioning temperatures may be more suitable, but little is known about the effects on the quality and bioactive composition of the resulting oil. Oil was recovered from five rapeseed cultivars by cold pressing (CP) or by pressing seeds conditioned at 80 C for 30 min (HP). Conditioning rapeseed increased oil yield without changing fatty acid composition and increased the amount of total sterols by 16 %, total tocopherols by 20 %, and the levels of polyphenols. Levels of the polyphenol canolol were up to 55-fold higher in HP oil than in CP oil. These higher levels of bioactive compounds gave HP oil higher radical scavenging activity. Although HP oil also had higher free fatty acid contents, peroxide levels, and specific UV extinctions (K values). The quality parameters of HP and CP oils were within codex limits indicating high quality. Modest conditioning temperatures can be used to produce rapeseed oil with high quality and radical scavenging activity.
Project / theme: 058-0580696-0704
Original language: ENG
Citation databases: Current Contents Connect (CCC)
Science Citation Index Expanded (SCI-EXP) (sastavni dio Web of Science Core Collectiona)
Category: Znanstveni
Research fields:
Food processing technology
Broj citata:
DOI: 10.1007/s11746-012-2195-7
URL cjelovitog rada:
Google Scholar: Quality of rapeseed oil produced by conditioning seeds at modest temperatures
Contrib. to CROSBI by: (, 11. Sij. 2013. u 12:25 sati

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