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Effect of Adverse Storage Conditions on Oil Quality and Tocochromanol Content in Yellow‐Seeded Breeding Lines of Brassica napus L.

cris.virtual.author-orcid0000-0002-3681-153X
cris.virtual.author-orcid0000-0001-6699-2987
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cris.virtual.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtualsource.author-orcid5d8013d7-489f-4858-b60d-ae1f299fa0a1
cris.virtualsource.author-orcid8989a1ba-cd61-4f60-80d5-c1b418028894
cris.virtualsource.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtualsource.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
dc.abstract.enThis study evaluated the contents of tocopherols and plastochromanol-8, as well as the acid values, in oils extracted from yellow-seeded Brassica napus L. lines stored under adverse post-harvest conditions. Seeds were stored at temperatures of 25°C and 30°C, with adjusted seed moisture contents of 10.5%, 12.5%, and 15.5%, corresponding to relative humidity levels of 81%, 85%, and 91%, respectively. A statistically significant reduction in total tocopherol content—up to 22% (p < 0.05)—was observed in seeds with the highest moisture content (15.5%) stored at 30°C. In contrast, seeds with 12.5% moisture stored at 25°C exhibited a smaller but still significant decrease of 11%–14% (p < 0.05). The lowest tocopherol degradation (2%–5%) occurred in seeds with 10.5% moisture stored at 25°C. Additionally, degradation rates differed between tocopherol homologues: α-tocopherol decreased more rapidly than γ-tocopherol, as evidenced by a significant decline in the α-T/γ-T ratio under high-moisture and high-temperature conditions. The most pronounced reduction in this ratio was recorded in seeds stored with 15.5% moisture at 30°C. Plastochromanol-8 was also highly sensitive to storage parameters, exhibiting an even more pronounced reduction than tocopherols under high-moisture conditions (p < 0.05). A significant increase in acid value was also observed under high temperature and moisture conditions, exceeding the acceptable threshold of 3.0 mg KOH/g in some cases, indicating advanced lipid hydrolysis during storage.
dc.affiliationWydział Nauk o Żywności i Żywieniu
dc.affiliation.instituteKatedra Biochemii i Analizy Żywności
dc.affiliation.instituteKatedra Technologii Żywności Pochodzenia Roślinnego
dc.contributor.authorSiger, Aleksander
dc.contributor.authorGawrysiak-Witulska, Marzena Bernadeta
dc.contributor.authorSzczechowiak‐Pigłas, Joanna
dc.contributor.authorBartkowiak‐Broda, Iwona
dc.date.accessioned2025-10-01T07:04:51Z
dc.date.available2025-10-01T07:04:51Z
dc.date.issued2025
dc.description.abstract<jats:title>ABSTRACT</jats:title><jats:p>This study evaluated the contents of tocopherols and plastochromanol‐8, as well as the acid values, in oils extracted from yellow‐seeded <jats:styled-content style="fixed-case"> <jats:italic>Brassica napus</jats:italic> </jats:styled-content> L. lines stored under adverse post‐harvest conditions. Seeds were stored at temperatures of 25°C and 30°C, with adjusted seed moisture contents of 10.5%, 12.5%, and 15.5%, corresponding to relative humidity levels of 81%, 85%, and 91%, respectively. A statistically significant reduction in total tocopherol content—up to 22% (<jats:italic>p</jats:italic> &lt; 0.05)—was observed in seeds with the highest moisture content (15.5%) stored at 30°C. In contrast, seeds with 12.5% moisture stored at 25°C exhibited a smaller but still significant decrease of 11%–14% (<jats:italic>p</jats:italic> &lt; 0.05). The lowest tocopherol degradation (2%–5%) occurred in seeds with 10.5% moisture stored at 25°C. Additionally, degradation rates differed between tocopherol homologues: α‐tocopherol decreased more rapidly than γ‐tocopherol, as evidenced by a significant decline in the α‐T/γ‐T ratio under high‐moisture and high‐temperature conditions. The most pronounced reduction in this ratio was recorded in seeds stored with 15.5% moisture at 30°C. Plastochromanol‐8 was also highly sensitive to storage parameters, exhibiting an even more pronounced reduction than tocopherols under high‐moisture conditions (<jats:italic>p</jats:italic> &lt; 0.05). A significant increase in acid value was also observed under high temperature and moisture conditions, exceeding the acceptable threshold of 3.0 mg KOH/g in some cases, indicating advanced lipid hydrolysis during storage.</jats:p>
dc.description.bibliographybibliogr.
dc.description.financepublication_nocost
dc.description.financecost0,00
dc.description.if2,4
dc.description.number9
dc.description.points70
dc.description.volume102
dc.identifier.doi10.1002/aocs.70005
dc.identifier.eissn1558-9331
dc.identifier.issn0003-021X
dc.identifier.urihttps://sciencerep.up.poznan.pl/handle/item/5117
dc.languageen
dc.relation.ispartofJAOCS, Journal of the American Oil Chemists' Society
dc.relation.pages1477-1486
dc.rightsClosedAccess
dc.sciencecloudnosend
dc.subject.enacid value
dc.subject.enBrassica napus L.
dc.subject.enplastochromanol-8
dc.subject.enstorage conditions
dc.subject.entocopherols
dc.subject.enyellow-seeded rapeseed
dc.titleEffect of Adverse Storage Conditions on Oil Quality and Tocochromanol Content in Yellow‐Seeded Breeding Lines of Brassica napus L.
dc.typeJournalArticle
dspace.entity.typePublication
oaire.citation.issue9
oaire.citation.volume102