The Lipids of Sea-Urchin Semen

1953 ◽  
Vol 30 (4) ◽  
pp. 561-566
Author(s):  
A. CARDIN ◽  
M. L. MEARA
Keyword(s):  
Fatty Acids ◽  
Free Fatty Acids ◽  
Sea Urchin ◽  
Marine Animal ◽  
Animal Fat ◽  
Lipid Material ◽  
Phosphorus Containing ◽  
Unsaponifiable Material

1. The specimen of sea-urchin semen examined contained 0.95% lipid material consisting of 13.6% neutral fat, 32.9% free fatty acids, 26.0% phospholipids, 9.2% sterols and 18.3% other unsaponifiable material. 2. The component fatty acids of the non-phosphorus-containing lipids have been computed to be: palmitic 10.1, unsaturated C16 2.1 (-3.0), C18 30.4 (-4.9), C20 45.1 (-7.0), C22 12.3 (-6.5)%, w/w, this being a composition which can be regarded as typical of a marine animal fat. 3. The N : P ratio of the phospholipids indicated the presence of mono- and diaminophosphatides and possibly the presence of non-phosphorus-containing lipoproteins. 4. Adequate reserves of non-phosphorus-containing lipids are present in the spermatozoa, in addition to phospholipids to serve as a source of energy required for movement.

UTILIZATION OF MILK AND ANIMAL FAT BY MICROORGANISMS – POTENTIAL PRODUCERS OF LIPASES AND ESTERASES

2020 ◽  
pp. 44-45
Author(s):  
D. Ivasenko ◽  
P. Bukhtiyarova ◽  
D. Antsiferov ◽  
Y. Frank
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Free Fatty Acids ◽  
Acid Composition ◽  
Liquid Culture ◽  
Culture Media ◽  
Bacterial Strains ◽  
Animal Fat ◽  
Pure Cultures

Analysis of fatty acid composition in liquid culture media after lipophilic bacterial strains cultivation was carried out. Pure cultures were earlierisolated from fat-containing wastes and cultivated on media with diverse fat sources. It was shown that microorganisms hydrolyze animal and milk fats to free fatty acids.

scholarly journals Homogenous Acidic and Basic Catalysts in Biodiesel Synthesis: A Review

2020 ◽  
Vol 4 (2) ◽  
pp. 76-85
Author(s):  
Abdelmalik M. Shakorfow ◽  
Abdulaziz. H. Mohamed
Keyword(s):  
Fatty Acids ◽  
Free Fatty Acids ◽  
Vegetable Oil ◽  
Moisture Level ◽  
Animal Fat ◽  
Acidic Catalysts ◽  
Biodiesel Synthesis ◽  
Basic Catalysts ◽  
Biodiesel Purification

AbstractSeveral techniques, in which different homogenous catalysts and procedures, that are in use for transesterification of a vegetable oil or an animal fat have been successful in synthesizing biodiesel, although with some certain limitations. For such a purpose, among the catalysts employed are acidic as well as basic catalysts. It has been found that acidic catalysts can be tolerant with a high content of free fatty acids found in those low value feedstock oils/fats to be transesterified, although some sort of pretreatment by means of esterification might be required in order to synthesize biodiesel. Moreover, with employing homogenous acidic catalysts, it seems that biodiesel purification procedures are simplified; thus, reducing synthesis cost. In fact, these features of homogenous acidic catalysts render them advantageous over basic ones. With basic homogenous catalysts this; however, has not been possible due to the development of saponification reaction. To effectively perform, such catalysts require that the content of free fatty acids in the feedstock oil/fat is minimal. This requirement is also applicable to the moisture level in the feedstock. In terms of corrosive effects; nevertheless, acidic catalysts are disadvantageous compared to basic ones.

The effect of free fatty acids upon the fertilization of the eggs of the sea urchin

PROTOPLASMA ◽  
1965 ◽  
Vol 60 (2-3) ◽  
pp. 211-217 ◽  
Author(s):  
Berndt E. Hagstr�m ◽  
Ralph T. Holman
Keyword(s):  
Fatty Acids ◽  
Free Fatty Acids ◽  
Sea Urchin

Cast Skin Lipids of the Indian Python (Python molurus bivittatus, Kühl, 1820)

1993 ◽  
Vol 48 (1-2) ◽  
pp. 80-84 ◽  
Author(s):  
Jürgen Jacob ◽  
Britt Ziemsen ◽  
Udo Hoppe
Keyword(s):  
Fatty Acids ◽  
Free Fatty Acids ◽  
Polar Lipids ◽  
Sterol Esters ◽  
Skin Lipids ◽  
The Past ◽  
Lipid Material ◽  
Python Molurus ◽  
Python Molurus Bivittatus

Cast skins of various snakes and in addition one lizard were found to contain 3.5-8.6% extractable lipid material. Lipids obtained from a cast skin of the Indian python were analyzed in detail indicating the presence of hydrocarbons (squalene, cholestadiene and alkanes), monoester waxes, sterol esters, diester waxes, triglycerides, sterols, free fatty acids and even more polar lipids. Among the monoester wax constituents odd-numbered secondary alkanols were found. It is assumed that the above lipids originate from cells of the past integumental generation and that they play an important facilitating role during the sloughing process.

scholarly journals Effect of Animal Fat and Mixtures of Animal and Vegetable Fats Containing Varying Amounts of Free Fatty Acids on Performance of Cage Layers

1960 ◽  
Vol 39 (6) ◽  
pp. 1550-1555 ◽  
Author(s):  
C.M. Treat ◽  
B.L. Reid ◽  
R.E. Davies ◽  
J.R. Couch
Keyword(s):  
Fatty Acids ◽  
Free Fatty Acids ◽  
Animal Fat

GENERAL EFFECTS OF α-MELANOCYTE STIMULATING HORMONE IN THE RABBIT

1965 ◽  
Vol 48 (4) ◽  
pp. 609-618 ◽  
Author(s):  
H. K. Dyster-Aas ◽  
C. E. T. Krakau
Keyword(s):  
Fatty Acids ◽  
Free Fatty Acids ◽  
Serum Calcium ◽  
Calcium Level ◽  
Serum Calcium Level ◽  
Systemic Effects ◽  
List Type ◽  
Aqueous Flare ◽  
Melanocyte Stimulating Hormone ◽  
Blood Aqueous Barrier

ABSTRACT In addition to the previously described permeability disturbance in the blood aqueous barrier of the eye, measured as an increase of the aqueous flare, a series of transitory systemic effects have been recorded following the subcutaneous injection of synthetic α-MSH: marked increase of the free fatty acids in plasma, decrease in the serum calcium level, decrease in the blood pressure, increase in the skin temperature, increased frequency and diminished amplitude of respiration, presence of slow waves in the EEG. There is a correlation between the magnitude of the aqueous flare increase and the increase of free fatty acids in plasma and also between the aqueous flare and the minimum serum calcium level.

The Relationship of Fasting Free Fatty Acids, Adipose Tissue, Insulin Resistance, and Fasting Glucose Concentrations with Subsequent ß-Cell Function in Nondiabetic Subjects

Diabetes ◽  
2018 ◽  
Vol 67 (Supplement 1) ◽  
pp. 1812-P
Author(s):  
MARIA D. HURTADO ◽  
J.D. ADAMS ◽  
MARCELLO C. LAURENTI ◽  
CHIARA DALLA MAN ◽  
CLAUDIO COBELLI ◽  
...  
Keyword(s):  
Insulin Resistance ◽  
Fatty Acids ◽  
Adipose Tissue ◽  
Free Fatty Acids ◽  
Cell Function ◽  
Fasting Glucose ◽  
Relationship Of ◽  
The Relationship
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