Chemical Composition of the Nasal Gland Secretion from the Marsh Deer Odocoileus ( DorcelaphusJ dichotomus (Illiger)

1976 ◽  
Vol 31 (9-10) ◽  
pp. 496-498 ◽  
Author(s):  
Jürgen Jacob ◽  
Ernst Von Lehmann
Keyword(s):  
Fatty Acids ◽  
Chemical Composition ◽  
Hydroxy Fatty Acids ◽  
Gland Secretion ◽  
Cholesterol Esters ◽  
Double Bonds ◽  
Lipid Mixture

Abstract The secretion of the nasal gland from the marsh deer (Odocoileus dichotomus) has shown to be a lipid mixture predominantly containing cholesterol esters, mono-and diester waxes, the latter of which containing 2-hydroxy fatty acids. The alcoholic constituents of the mono-and diester waxes contain considerable amounts of mono-unsaturated homologues, all with double bonds in(ω-9) position.

scholarly journals Physiological and biochemical aspects of the avian uropygial gland

2009 ◽  
Vol 69 (2) ◽  
pp. 437-446 ◽  
Author(s):  
A. Salibian ◽  
D. Montalti
Keyword(s):  
Fatty Acids ◽  
Production Control ◽  
Neutral Lipids ◽  
Saturated Fatty Acids ◽  
Columba Livia ◽  
Gland Secretion ◽  
Water Repellent ◽  
Endocrine Regulation ◽  
Uropygial Gland ◽  
Lipid Mixture

This review discusses different aspects of the uropygial gland of birds. The gland exhibits a striking morphological diversity in size, shape and presence/absence of tufts of feathers. It was shown that acidic mucins, neutral lipids, glycolipids and phospholipids are normal components of secretion. Several morphological and physiological aspects of the gland were studied on Rock Pigeon Columba livia Gmelin, 1879. The amount of the uropygial gland secretion, its lipid content and fatty acids profile were determined. The extracted lipid mixture contained of C14 to C20 fatty acids, mostly unsaturated; the saturated fatty acids were mainly 14:0, 16:0 and 18:0. No correlation was found between the size of the gland and the aquatic/terrestrial nature of the species. Ablation of the gland did not affect survival, body weight, feeding rate and serum cholesterol, total lipids or calcium levels after 32-120 days. The possible role of the gland in the protection against lipophilic compounds was discussed. The function of the gland is still a subject of controversy. It is accepted that its secretion confers water-repellent properties on the feather coat and maintain the suppleness of the feathers. Other physiological roles of the gland secretion may be associated to pheromone production, control of plumage hygiene, thermal insulation and defence against predators. Concerning the endocrine regulation of the uropygial function, there is scarce information presenting evidence for steroid regulated mechanisms.

Chemical Composition of the Secretion from the Anal Sacs of Civettictis civetta (Schreber, 1776)

1983 ◽  
Vol 38 (5-6) ◽  
pp. 497-500 ◽  
Author(s):  
Jürgen Jacob ◽  
Harald Schliemann
Keyword(s):  
Fatty Acids ◽  
Chemical Composition ◽  
Free Fatty Acids ◽  
Functional Significance ◽  
Volatile Components ◽  
Cholesterol Esters ◽  
Anal Sac Secretion ◽  
Anal Sac ◽  
Chain Lengths ◽  
Anal Sacs

The chemical composition of the secretion from the anal sacs of a female of Civettictis civetta is analysed using gas- liquid chromatographical and mass spectrometrical tech­niques. The secretion mainly consists of cholesterol esters, monoester waxes, cholesterol, and free fatty acids of chain lengths not under C12; highly volatile components were not traceable. The functional significance of the anal sac secretion is discussed. `

Composition of the Ventral Gland-Pad Sebum from the Mongolian Gerbil, Meriones unguiculatus

1977 ◽  
Vol 32 (9-10) ◽  
pp. 735-738 ◽  
Author(s):  
Jürgen Jacob ◽  
Uwe Green
Keyword(s):  
Fatty Acids ◽  
Chemical Composition ◽  
Mongolian Gerbil ◽  
Meriones Unguiculatus ◽  
Cholesterol Esters ◽  
High Concentrations ◽  
Ventral Gland

Abstract The chemical composition of the gland-pad sebum of gerbils of both sexes is analysed using gas-liquid chromatographical and mass spectroscopical techniques and compared with the lipids from distal skin areas. Cholesterol esters, with (ω-1)-methyl-substituted fatty acids as acidic constituents, were shown to occur in the gland-pad sebum of both sexes in high concentrations, whereas cholesta-3,5-diene could be detected in the males only.

Position of double bonds in the fatty acids of cholesterol esters from human aorta

1970 ◽  
Vol 12 (1) ◽  
pp. 63-74 ◽  
Author(s):  
J.C. Geer ◽  
R.V. Panganamala ◽  
D.G. Cornwell
Keyword(s):  
Fatty Acids ◽  
Human Aorta ◽  
Cholesterol Esters ◽  
Double Bonds

Identification of New Hydroxy Fatty Acids and Ferulic Acid Esters in the Wood of Eucalyptus globulus

Holzforschung ◽  
2002 ◽  
Vol 56 (2) ◽  
pp. 143-149 ◽  
Author(s):  
C. S. R. Freire ◽  
A. J.D. Silvestre ◽  
C. Pascoal Neto
Keyword(s):  
Fatty Acids ◽  
Chemical Composition ◽  
Ferulic Acid ◽  
Eucalyptus Globulus ◽  
Fatty Alcohols ◽  
Hydroxy Fatty Acids ◽  
Gas Chromatography Mass Spectrometry ◽  
Published Data ◽  
First Time ◽  
Acid Esters

Summary The chemical composition of the dichloromethane extract of Eucalyptus globulus wood cultivated in Portugal was studied by gas chromatography-mass spectrometry, prior to and after alkaline hydrolysis. In addition to previously identified lipophilic extractives, 22 free or esterified compounds (14 fatty acids, 2 fatty alcohols and 6 aromatic compounds) were identified for the first time in E. globulus wood. One of these, ferulic acid, was esterified with three different fatty alcohols and with two α-hydroxyfatty acids. Some of the newly identified compounds, particularly the a-hydroxy-fatty acids are responsible for recently reported pitch problems during pulp production in a Portuguese mill. The differences found in the E. globulus chemical composition, when compared with published data, are expected to be related to variations in the location of growth and genetic factors.

scholarly journals Mare’s Milk from a Small Polish Specialized Farm—Basic Chemical Composition, Fatty Acid Profile, and Healthy Lipid Indices

Animals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1590
Author(s):  
Grażyna Czyżak-Runowska ◽  
Jacek Antoni Wójtowski ◽  
Romualda Danków ◽  
Daniel Stanisławski
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Chemical Composition ◽  
Birth Order ◽  
Fatty Acid Profile ◽  
Age Structure ◽  
Atherogenic Index ◽  
Milk Samples ◽  
Stage Of Lactation ◽  
Bulk Tank

The objective of this study was to determine the chemical composition, fatty acid profile, and values of healthy indices of milk from a specialized farm of Polish Coldblood mares of different ages, birth orders, and lactation stages. Milk samples (n = 48) were collected for analysis in weeks 10, 15, and 25 of lactation from mares aged between five and 14 years. The study showed that the stage of lactation has a significant effect on the fatty acid (FA) profile of the milk produced on the farm. The highest concentration of monounsaturated and polyunsaturated FAs was found in milk produced from the 15th week of lactation. The milk was also characterized by low values of atherogenic and thrombogenic indices, which indicate the health benefits of milk with respect to the content of fatty acids and their potential to prevent or cause atherosclerosis and thrombosis. The study also found a significant correlation between the number of foalings (birth order), the fatty acid profile, and atherogenic index of milk produced on the farm. The findings from the study indicate that it is possible to modify the fatty acid profile of bulk tank milk through appropriate management of the age structure of the herd of mares. To confirm this dependence, the study will be continued on a larger group of mares.

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