Modeling of the Triacylglycerol Stereospecific Composition of Vegetable Oils: I. Comparison of Models for Triacylglycerol Assembly.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F22%3A00545954" target="_blank" >RIV/67985858:_____/22:00545954 - isvavai.cz</a>

Výsledek na webu

<a href="http://hdl.handle.net/11104/0323813" target="_blank" >http://hdl.handle.net/11104/0323813</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/ejlt.202000392" target="_blank" >10.1002/ejlt.202000392</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Modeling of the Triacylglycerol Stereospecific Composition of Vegetable Oils: I. Comparison of Models for Triacylglycerol Assembly.

Popis výsledku v původním jazyce

Stereospecific composition of triacylglycerols (TAGs) is calculated for a set of analytical data on genetically modified sunflower and soybean seed oils, using different mathematical models for TAG assembly. The models are related to biochemical pathways. The data (Reske et al., JAOCS 74 (1997) 989–998) consist of total fatty acid profiles, fatty acid proportion in the sn-positions of TAGs, and TAG composition determined by HPLC analysis without distinguishing isomers. Besides the 1-random, 2-random, 3-random models, a DAG-random, 3-random model is examined, the parameters of which are estimates of mole fractions of sn-1,2-diacylglycerols (sn-1,2-DAGs) before esterification at the sn-3 position. Combining the last named model with correlations of fatty acid proportions in the sn-positions and overall fatty acid composition, triacylglycerol stereospecific composition can be estimated from the TAG composition determined by HPLC. The deviation of the estimates from analytical characteristics of oils (fatty acid distribution and TAG composition) is less than the deviation of results of the Vander Wal model. Practical Applications: It can be expected that the DAG-random, 3-random model with arbitrarily adjustable distribution of acyls in sn-1,2-diacylglycerols can reflect the composition of TAGs rich in polyunsaturated fatty acids better than previously used models. The reason is that it can reflect acyl editing in phosphatidylcholine pool of seed cells, while the 1-random, 2-random, 3-random models correspond to simple Kennedy pathway of oil biosynthesis.

Název v anglickém jazyce

Modeling of the Triacylglycerol Stereospecific Composition of Vegetable Oils: I. Comparison of Models for Triacylglycerol Assembly.

Popis výsledku anglicky

Stereospecific composition of triacylglycerols (TAGs) is calculated for a set of analytical data on genetically modified sunflower and soybean seed oils, using different mathematical models for TAG assembly. The models are related to biochemical pathways. The data (Reske et al., JAOCS 74 (1997) 989–998) consist of total fatty acid profiles, fatty acid proportion in the sn-positions of TAGs, and TAG composition determined by HPLC analysis without distinguishing isomers. Besides the 1-random, 2-random, 3-random models, a DAG-random, 3-random model is examined, the parameters of which are estimates of mole fractions of sn-1,2-diacylglycerols (sn-1,2-DAGs) before esterification at the sn-3 position. Combining the last named model with correlations of fatty acid proportions in the sn-positions and overall fatty acid composition, triacylglycerol stereospecific composition can be estimated from the TAG composition determined by HPLC. The deviation of the estimates from analytical characteristics of oils (fatty acid distribution and TAG composition) is less than the deviation of results of the Vander Wal model. Practical Applications: It can be expected that the DAG-random, 3-random model with arbitrarily adjustable distribution of acyls in sn-1,2-diacylglycerols can reflect the composition of TAGs rich in polyunsaturated fatty acids better than previously used models. The reason is that it can reflect acyl editing in phosphatidylcholine pool of seed cells, while the 1-random, 2-random, 3-random models correspond to simple Kennedy pathway of oil biosynthesis.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20401 - Chemical engineering (plants, products)

Projekt

<a href="/cs/project/GA19-19245S" target="_blank" >GA19-19245S: Studie biokatalýzy v superkritickém oxidu uhličitém: obohacení rostlinných olejů esenciálními mastnými kyselinami</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

European Journal of Lipid Science and Technology

ISSN

1438-7697

e-ISSN

1438-9312

Svazek periodika

124

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

2000392

Kód UT WoS článku

000697913000001

EID výsledku v databázi Scopus

2-s2.0-85115055761