STUDIES ON VITAMIN E IN THE HOUSE CRICKET, ACHETA DOMESTICUS (ORTHOPTERA: GRYLLIDAE): III. TARSAL ABSORPTION OF VITAMIN E AND FATTY ACID METHYL ESTERS BY LARVAE

1972 ◽  
Vol 104 (4) ◽  
pp. 519-522
Author(s):  
J. E. McFarlane
Keyword(s):  
Fatty Acid ◽  
Vitamin E ◽  
Fatty Acid Methyl Esters ◽  
Methyl Esters ◽  
Acheta Domesticus ◽  
House Cricket ◽  
Second Stage ◽  
Acid Methyl

AbstractWhen fatty acid methyl esters or vitamin E are painted on the surface of eggs of the house cricket, Acheta domesticus (L.), second-stage larvae originating from these eggs may show reduction of the tarsi. The effect of the chemicals is on the first-stage larvae which absorb the chemicals through the tarsi during escape from the shell. The reduced tarsi are regenerated at the next moult or next two moults.

scholarly journals Vitamin E and stress

1967 ◽  
Vol 21 (2) ◽  
pp. 497-506 ◽  
Author(s):  
J. Green ◽  
A. T. Diplock ◽  
J. Bunyan ◽  
I. R. Muthy ◽  
D. Mchale
Keyword(s):  
Fatty Acid ◽  
Linoleic Acid ◽  
Vitamin E ◽  
Fatty Acid Methyl Esters ◽  
Essential Fatty Acids ◽  
Methyl Esters ◽  
Dietary Lipid ◽  
Liver Necrosis ◽  
Torula Yeast ◽  
Acid Methyl

1. Liver necrosis was produced in rats given diets deficient in selenium and vitamin E and the metabolism of [5-Me-14C]D-α-tocopherol was studied during the development of the disease. 2. When a torula yeast diet (containing sufficient of the yeast to provide essential fatty acids) was used, the addition of 5 % cod-liver oil fatty acid methyl esters produced only a slight decrease in the time taken to produce the disease, compared to controls given methyl oleate; methionine had little protective effect. The metabolism of the radioactive tocopherol was unaffected by dietary lipid, Se or methionine and was not influenced by the development of necrosis. 3. When a casein diet (devoid of fat and containing insufficient Se to prevent liver necrosis) was used, the addition of small amounts of linoleic acid to the diet (as 2 % maize oil fatty acid methyl esters) decreased the time taken to produce the disease and increased its incidence. However, the metabolism of the radioactive tocopherol was independent of dietary lipid or Se. 4. It would appear that either Se or vitamin E may be necessary for effective utilization of the ratapos;s requirement for linoleic acid.

Comparison of Technologies on Extracting and Concentrating Natural Vitamin E Using Supercritical CO2

2006 ◽  
Vol 1 (5) ◽  
Author(s):  
Yun Liu ◽  
Xiao-lin Ding ◽  
Dan-hua Zhu
Keyword(s):  
Fatty Acid ◽  
Vitamin E ◽  
Supercritical Co2 ◽  
Fatty Acid Methyl Esters ◽  
Methyl Esters ◽  
Natural Vitamin ◽  
Acid Methyl ◽  
Single Column ◽  
Separation Factors ◽  
Column Extraction

Solubilities are measured for natural tocopherols and fatty acid methyl esters(FAMEs) under partly isothermal, isobaric and isochoric conditions in the range of temperature of 40-60deg.C and pressure of 9.7-16.2MPa based on soybean de-odorizer(DOD) pretreatment, the separation factors between FAMEs and tocopherols are 3.1-5.4 in this study. Furthermore, three different technology projects are analyzed qualitatively and quantitatively of single column extraction (SCE), extraction and fractionation (EF), two-column extraction (TCE).

Sign in / Sign up

Export Citation Format

Share Document