Investigation of content of primary and secondary oxidation products in sunflower oils with a different content of oleic acid
Аутори
Romanić, RLužaić, Tanja
Kravić, S.
Stojanović, Z.
Grahovac, Nada
Cvejić, Sandra
Jocić, Siniša
Šunjka, D.
Конференцијски прилог (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Oxidative stability, i.c. shelf life of oil is related to the degree of the oxidative changes
in the amount of the resulting primary and secondary oxidation products of unsaturated fatty
acids. In order to improve oxidative stability, i.e. oil shelf life, sunflower hybrids with altered
fatty acid composition have been created, i.e. significantly higher oleic acid (C18:1) content,
even over 90% w/w, relative to the linoleic type with 25-30% w/w of oleic and 60-65% w/w
of linoleic acid (C18:2). In order to examine the oxidative stability of the oil, three samples of
sunflower seed oil NS hybrids (NS Oliva, NS Horizont and NS Romeo) of different fatty acid
composition were analyzed. Samples were exposed to moderate temperatures (6342°C) over a
period of 8 days. Changes in the content of primary and secondary oxidation products based
on changes in peroxide (PV) and anisidine (p-AnV) values, as well as changes in the content
of conjugated dienes and trienes, were observed. The hig...hest oxidative stability was observed
in the oleic type oil sample. In this sample the determined values of the tested parameters of
oxidative stability, after 8 days, were PV=4.85 mmol/kg and p-AnV=0.65, compared to the
initial sample (PV=0.36 mmol/kg and p-AnV=0.57). The greatest oxidative changes occurred
in the oil sample with the lowest content of oleic and the highest content of linoleic acid, as
indicated by the PV=73.22 mmol/kg and p-AnV=3.60, after 8 days, in relation to PV=2.16
mmol/kg and p-AnV=0.50 in the initial linoleic type oil sample.
Кључне речи:
Sunflower oil / primary and secondary oxidation products / oleic acid / peroxide value / conjugated dienes.Извор:
9th International Scientific Agricultural Symposium “Agrosym 2018”, Jahorina, Bosnia and Herzegovina, 2018, 339-339Колекције
Институција/група
FiVeRTY - CONF AU - Romanić, R AU - Lužaić, Tanja AU - Kravić, S. AU - Stojanović, Z. AU - Grahovac, Nada AU - Cvejić, Sandra AU - Jocić, Siniša AU - Šunjka, D. PY - 2018 UR - http://fiver.ifvcns.rs/handle/123456789/3707 AB - Oxidative stability, i.c. shelf life of oil is related to the degree of the oxidative changes in the amount of the resulting primary and secondary oxidation products of unsaturated fatty acids. In order to improve oxidative stability, i.e. oil shelf life, sunflower hybrids with altered fatty acid composition have been created, i.e. significantly higher oleic acid (C18:1) content, even over 90% w/w, relative to the linoleic type with 25-30% w/w of oleic and 60-65% w/w of linoleic acid (C18:2). In order to examine the oxidative stability of the oil, three samples of sunflower seed oil NS hybrids (NS Oliva, NS Horizont and NS Romeo) of different fatty acid composition were analyzed. Samples were exposed to moderate temperatures (6342°C) over a period of 8 days. Changes in the content of primary and secondary oxidation products based on changes in peroxide (PV) and anisidine (p-AnV) values, as well as changes in the content of conjugated dienes and trienes, were observed. The highest oxidative stability was observed in the oleic type oil sample. In this sample the determined values of the tested parameters of oxidative stability, after 8 days, were PV=4.85 mmol/kg and p-AnV=0.65, compared to the initial sample (PV=0.36 mmol/kg and p-AnV=0.57). The greatest oxidative changes occurred in the oil sample with the lowest content of oleic and the highest content of linoleic acid, as indicated by the PV=73.22 mmol/kg and p-AnV=3.60, after 8 days, in relation to PV=2.16 mmol/kg and p-AnV=0.50 in the initial linoleic type oil sample. C3 - 9th International Scientific Agricultural Symposium “Agrosym 2018”, Jahorina, Bosnia and Herzegovina T1 - Investigation of content of primary and secondary oxidation products in sunflower oils with a different content of oleic acid EP - 339 SP - 339 UR - https://hdl.handle.net/21.15107/rcub_fiver_3707 ER -
@conference{ author = "Romanić, R and Lužaić, Tanja and Kravić, S. and Stojanović, Z. and Grahovac, Nada and Cvejić, Sandra and Jocić, Siniša and Šunjka, D.", year = "2018", abstract = "Oxidative stability, i.c. shelf life of oil is related to the degree of the oxidative changes in the amount of the resulting primary and secondary oxidation products of unsaturated fatty acids. In order to improve oxidative stability, i.e. oil shelf life, sunflower hybrids with altered fatty acid composition have been created, i.e. significantly higher oleic acid (C18:1) content, even over 90% w/w, relative to the linoleic type with 25-30% w/w of oleic and 60-65% w/w of linoleic acid (C18:2). In order to examine the oxidative stability of the oil, three samples of sunflower seed oil NS hybrids (NS Oliva, NS Horizont and NS Romeo) of different fatty acid composition were analyzed. Samples were exposed to moderate temperatures (6342°C) over a period of 8 days. Changes in the content of primary and secondary oxidation products based on changes in peroxide (PV) and anisidine (p-AnV) values, as well as changes in the content of conjugated dienes and trienes, were observed. The highest oxidative stability was observed in the oleic type oil sample. In this sample the determined values of the tested parameters of oxidative stability, after 8 days, were PV=4.85 mmol/kg and p-AnV=0.65, compared to the initial sample (PV=0.36 mmol/kg and p-AnV=0.57). The greatest oxidative changes occurred in the oil sample with the lowest content of oleic and the highest content of linoleic acid, as indicated by the PV=73.22 mmol/kg and p-AnV=3.60, after 8 days, in relation to PV=2.16 mmol/kg and p-AnV=0.50 in the initial linoleic type oil sample.", journal = "9th International Scientific Agricultural Symposium “Agrosym 2018”, Jahorina, Bosnia and Herzegovina", title = "Investigation of content of primary and secondary oxidation products in sunflower oils with a different content of oleic acid", pages = "339-339", url = "https://hdl.handle.net/21.15107/rcub_fiver_3707" }
Romanić, R., Lužaić, T., Kravić, S., Stojanović, Z., Grahovac, N., Cvejić, S., Jocić, S.,& Šunjka, D.. (2018). Investigation of content of primary and secondary oxidation products in sunflower oils with a different content of oleic acid. in 9th International Scientific Agricultural Symposium “Agrosym 2018”, Jahorina, Bosnia and Herzegovina, 339-339. https://hdl.handle.net/21.15107/rcub_fiver_3707
Romanić R, Lužaić T, Kravić S, Stojanović Z, Grahovac N, Cvejić S, Jocić S, Šunjka D. Investigation of content of primary and secondary oxidation products in sunflower oils with a different content of oleic acid. in 9th International Scientific Agricultural Symposium “Agrosym 2018”, Jahorina, Bosnia and Herzegovina. 2018;:339-339. https://hdl.handle.net/21.15107/rcub_fiver_3707 .
Romanić, R, Lužaić, Tanja, Kravić, S., Stojanović, Z., Grahovac, Nada, Cvejić, Sandra, Jocić, Siniša, Šunjka, D., "Investigation of content of primary and secondary oxidation products in sunflower oils with a different content of oleic acid" in 9th International Scientific Agricultural Symposium “Agrosym 2018”, Jahorina, Bosnia and Herzegovina (2018):339-339, https://hdl.handle.net/21.15107/rcub_fiver_3707 .