scholarly journals Novel optical sensor-based method for determining total tocopherol content in serum

2018 ◽  
Vol 42 (6) ◽  
pp. 1687-1694 ◽  
Author(s):  
Mustafa BENER ◽  
Reşat APAK
Keyword(s):  
Optical Sensor ◽  
Tocopherol Content ◽  
Total Tocopherol ◽  
Total Tocopherol Content

Fast Automated Determination of Total Tocopherol Content in Virgin Olive Oil Using a Single Multicommuted Luminescent Flow Method

2017 ◽  
Vol 10 (7) ◽  
pp. 2125-2131 ◽  
Author(s):  
Felipe J. Lara-Ortega ◽  
Bienvenida Gilbert-López ◽  
Juan F. García-Reyes ◽  
Antonio Molina-Díaz
Keyword(s):  
Olive Oil ◽  
Virgin Olive Oil ◽  
Tocopherol Content ◽  
Total Tocopherol ◽  
Flow Method ◽  
Total Tocopherol Content ◽  
Automated Determination

scholarly journals Tocopherols in Sunflower Seedlings under Light and Dark Conditions

2015 ◽  
Vol 2015 ◽  
pp. 1-11 ◽  
Author(s):  
Lidia del Moral ◽  
Begoña Pérez-Vich ◽  
Leonardo Velasco
Keyword(s):  
Oxidative Damage ◽  
Sampling Period ◽  
Tocopherol Content ◽  
Partial Replacement ◽  
Total Tocopherol ◽  
Light Conditions ◽  
Sunflower Seeds ◽  
Light Effect ◽  
Total Tocopherol Content ◽  
Dark Conditions

The objective of this study was to evaluate the dynamics of tocopherols in cotyledons and radicles from sunflower seeds with high and low total tocopherol content, mainly in theα-tocopherol form, and from seeds with increased proportions ofβ-,γ-, andδ-tocopherol, both under dark and light conditions. Tocopherol content was measured every 24 h from 1 to 12 days after sowing. In all cases, the content of individual tocopherol forms in the cotyledons and radicles was reduced along the sampling period, which was more pronounced under light conditions. The presence of light had a slightly greater effect onα- andγ-tocopherol than onβ- andδ-tocopherol. A marked light effect was also observed on total tocopherol content, with light promoting the reduction of tocopherol content in cotyledons and radicles. The study revealed only slight differences in the patterns of tocopherol losses in lines with different tocopherol profiles, both under dark and light conditions, which suggested that the partial replacement ofα-tocopherol by other tocopherol forms had no great impact on the protection against oxidative damage in seedlings.

scholarly journals Genetic Analysis of Reducedγ-Tocopherol Content in Ethiopian Mustard Seeds

2016 ◽  
Vol 2016 ◽  
pp. 1-7
Author(s):  
Elena García-Navarro ◽  
José M. Fernández-Martínez ◽  
Begoña Pérez-Vich ◽  
Leonardo Velasco
Keyword(s):  
Genetic Analysis ◽  
Goodness Of Fit ◽  
Genetic Model ◽  
Tocopherol Content ◽  
Total Tocopherol ◽  
Epistatic Interactions ◽  
Ethiopian Mustard ◽  
Total Tocopherol Content ◽  
Dominant Genetic Model ◽  
Minimum Number

Ethiopian mustard (Brassica carinataA. Braun) line BCT-6, with reducedγ-tocopherol content in the seeds, has been previously developed. The objective of this research was to conduct a genetic analysis of seed tocopherols in this line. BCT-6 was crossed with the conventional line C-101 and theF1,F2, and BC plant generations were analyzed. Generation mean analysis using individual scaling tests indicated that reducedγ-tocopherol content fitted an additive-dominant genetic model with predominance of additive effects and absence of epistatic interactions. This was confirmed through a joint scaling test and additional testing of the goodness of fit of the model. Conversely, epistatic interactions were identified for total tocopherol content. Estimation of the minimum number of genes suggested that bothγ- and total tocopherol content may be controlled by two genes. A positive correlation between total tocopherol content and the proportion ofγ-tocopherol was identified in theF2generation. Additional research on the feasibility of developing germplasm with high tocopherol content and reduced concentration ofγ-tocopherol is required.

Genetic and environmental variation for tocopherol content and composition in sunflower commercial hybrids

2002 ◽  
Vol 139 (4) ◽  
pp. 425-429 ◽  
Author(s):  
L. VELASCO ◽  
J. M. FERNÁNDEZ-MARTÍNEZ ◽  
R. GARCÍA-RUÍZ ◽  
J. DOMÍNGUEZ
Keyword(s):  
Seed Yield ◽  
Seed Oil ◽  
Environmental Variation ◽  
Tocopherol Content ◽  
Alpha Tocopherol ◽  
Total Tocopherol ◽  
Sunflower Seeds ◽  
Total Tocopherol Content ◽  
100 Seed Weight ◽  
Location Interaction

Tocopherols are the most important compounds having antioxidant activity in sunflower seeds. The objective of the present research was to study the genetic and environmental variation for tocopherol content and composition in sunflower. Thirty-six sunflower hybrids were grown at 13 locations across all major areas of sunflower cultivation in southern Spain. Seed yield, 100 seed weight, oil content and tocopherol content and composition were determined. Tocopherol content ranged from 314·5 to 1024·5 mg/kg seed and from 562·8 to 1872·8 mg/kg oil. The tocopherol fraction was largely composed of alpha-tocopherol, which accounted for 88·4% to 96·3% of the total tocopherols. Both genotypic and environmental effects were significant for tocopherol content and composition. For alpha-, beta- and total tocopherol content, the effect of the genotype was larger than that of the environment, whereas the latter had a greater effect on gamma-tocopherol content. Genotype×location interaction was significant for alpha-, gamma- and total tocopherol content. Tocopherol content was not correlated with seed oil or seed yield, indicating the possibility of selecting for this trait without affecting the performance of the genotypes.

scholarly journals Fatty acids, tocopherol, and sterol contents of some Nigella species seed oil

2011 ◽  
Vol 29 (No. 2) ◽  
pp. 145-150 ◽  
Author(s):  
B. Matthaus ◽  
M.M. Özcan
Keyword(s):  
Fatty Acids ◽  
Seed Oil ◽  
Compositional Analysis ◽  
Tocopherol Content ◽  
Gas Liquid Chromatography ◽  
Seed Oils ◽  
Total Tocopherol ◽  
Total Tocopherol Content ◽  
Total Oil ◽  
Main Component

The lipid compositions of the seed oils of some Nigella species were investigated. The total oil content of the seeds ranged from 28.0 to 36.4%. GC-MS fatty acid compositional analysis of the Nigella seed oils revealed the content of linoleic acid to be the highest (40.3–58.9%). Other prominent fatty acids were as follows: oleic (18.7–28.1%), palmitic (10.1–12.5%), 22:1 D11 (3.2–3.8%) and stearic (2.6–3.1%) acids. All the Nigella seed oils analysed exhibited differences in their tocopherol contents and the differences were estimated. The oils extracted from the seeds contained between 1.70–4.12 mg/100 g α-T, 0.97–4.51 mg/100 g γ-T, and 4.90–17.91 mg/100 g β-T3. The total tocopherol content in seeds varied between 9.15 mg/100 g to 24.65 mg/100 g. The compositions of the sterol fractions were determined by gas liquid chromatography. The total amounts of sterols ranged between 1993.07 mg/kg to 2182.17 mg/kg. The main component was β-sitosterol (48.35–51.92%), followed by 5-avenasterol, campesterol, and stigmasterol.

EFFECT OF GERMINATION ON THE TOTAL TOCOPHEROL CONTENT OF PULSES AND CEREALS

1952 ◽  
Vol 17 (1-6) ◽  
pp. 402-403 ◽  
Author(s):  
HARIPADA CHATTOPADHYAY ◽  
SACHCHIDANANDA BANERJEE
Keyword(s):  
Tocopherol Content ◽  
Total Tocopherol ◽  
Total Tocopherol Content

scholarly journals INHERITANCE OF TOCOPHEROL CONTENT IN SUNFLOWER SEEDS IN RETURN CROSSING

2021 ◽  
Author(s):  
N.N. Gordovskaya ◽  
◽  
T.M. Peretyagina ◽  
T.A. Kovalenko ◽  
◽  
...  
Keyword(s):  
Maternal Effect ◽  
Significant Positive Correlation ◽  
Tocopherol Content ◽  
Recurrent Parent ◽  
Total Tocopherol ◽  
Sunflower Seeds ◽  
Breeding Lines ◽  
Positive Correlation ◽  
Total Tocopherol Content

The aim of this work was to study the inheritance of the total tocopherol content (TTC) in backcrosses of sunflower breeding lines. Inheritance in the BC1 generation with a highly significant parent is carried out according to the type of intermediate and overdominance (h/d from -0.53 to 2.81), with low significance – according to the type of intermediate and negative overdominance (h/d from -0.59 to -1, 48). A significant positive correlation between the values of the recurrent parent and BC1, equal to 0.8, indicates the observed maternal effect. In the I1BC1 generation, positive and negative transgression was found.

524. The influence of feeding tocopherol to dairy cows on the yield of milk and milk-fat and on the tocopherol content and keeping quality of the butter

1953 ◽  
Vol 20 (3) ◽  
pp. 333-339 ◽  
Author(s):  
Jens Nielsen ◽  
Anders N. Fisker ◽  
Aage H. Pedersen ◽  
Inge Prange ◽  
Ebbe Søndergaard ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Milk Fat ◽  
Experimental Period ◽  
Tocopherol Content ◽  
Total Tocopherol ◽  
Test Diet ◽  
Suitable Test ◽  
Butter Fat ◽  
Keeping Quality

Supplementation of a typical Danish winter ration with 2 g. of DL-α-tocopherol acetate per cow per day did not result in an increased yield of milk or milk-fat. The keeping quality of the butter was practically uninfluenced or possibly slightly reduced by the supplementation. The supplementation caused a rise in the tocopherol content of the butter from 10 to 12µg./g. in the unsupplemented group to 23–26/µg./g. in the supplemented group. After the experimental period the amount of total tocopherol in the butter decreased rapidly. It increased again when the cows went to pasture.Butter-fat obtained from the unsupplemented group with 9·6–13·2µg. tocopherol/g. and from the supplemented group with 27·3–31·2µg. tocopherol/g. did not produce encephalomalacia in chicks when incorporated at a level of 30% instead of lard in a suitable test diet, but the amount of tocopherol present, especially in the butter-fat from the unsupplemented group, was not sufficient to prevent white striation of breast muscles in chicks under the same conditions.

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