Chemical composition of the slippery epicuticular wax blooms on Macaranga (Euphorbiaceae) ant-plants

Chemoecology ◽  
2000 ◽  
Vol 10 (1) ◽  
pp. 33-40 ◽  
Author(s):  
Claus Markstädter ◽  
Walter Federle ◽  
Reinhard Jetter ◽  
Markus Riederer ◽  
Bert Hölldobler
Keyword(s):  
Chemical Composition ◽  
Epicuticular Wax

Effects of Air Pollutants on Epicuticular Wax Chemical Composition

1994 ◽  
pp. 67-79 ◽  
Author(s):  
K. E. Percy ◽  
C. J. McQuattie ◽  
J. A. Rebbeck
Keyword(s):  
Chemical Composition ◽  
Air Pollutants ◽  
Epicuticular Wax

scholarly journals Analysis of Cuticular Lipids of the Pharaoh Ant (Monomorium pharaonis) and Their Selective Adsorption on Insecticidal Zeolite Powders

2018 ◽  
Vol 19 (9) ◽  
pp. 2797 ◽  
Author(s):  
Heleen Van Den Noortgate ◽  
Bert Lagrain ◽  
Tom Wenseleers ◽  
Johan Martens
Keyword(s):  
Chemical Composition ◽  
Insecticidal Activity ◽  
Selective Adsorption ◽  
Epicuticular Wax ◽  
Gas Chromatography Mass Spectrometry ◽  
Adsorption Selectivity ◽  
Adsorption Mechanisms ◽  
Pore Mouth ◽  
Adsorption Processes ◽  
Epicuticular Wax Layer

The pharaoh ant is a notorious and hard to eradicate pest, which poses a threat in hospitals, spreading pathogens and contaminating sterile equipment. When applied on ants, zeolites adsorb part of their epicuticular wax layer. The ants are then vulnerable to desiccation, since this layer regulates water exchange. We analyzed the chemical composition of this wax layer using GC-MS (Gas Chromatography-Mass Spectrometry). A hexane wash of M. pharaonis foragers resulted in the identification of 53 components, four of which were not previously defined in Monomorium species. Selective adsorption of specific compounds on zeolites assisted in the identification of compounds which could not be separated on the GC column and allowed for the identification of three additional compounds. Zeolites show different affinities for the wax compounds depending on pore structure and chemical composition. Selective adsorption of alkanes on zeolites is also investigated in the fields of refinery processes and catalysis. Pore mouth and key lock adsorption mechanisms and selectivity according to molecular weight and branching, investigated in these fields, are also involved in adsorption processes of epicuticular waxes. The insecticidal activity of a zeolite is related to adsorption selectivity rather than capacity. One of the best adsorbing zeolites showed limited insecticidal activity and can be considered as a non-lethal alternative for epicuticular wax sampling.

Chemical composition of epicuticular wax in cabbage plants grown in vitro

1984 ◽  
Vol 62 (1) ◽  
pp. 74-77 ◽  
Author(s):  
Ellen Sutter
Keyword(s):  
Fatty Acids ◽  
Chemical Composition ◽  
Polar Compounds ◽  
Epicuticular Wax ◽  
Secondary Alcohols ◽  
Primary Alcohols ◽  
Polar Components ◽  
Chain Lengths ◽  
Intensity Characteristic

The chemical composition of epicuticular wax from cabbage plants grown in vitro was compared with that from plants grown in a greenhouse. There was a greater percentage of polar compounds (fatty acids, primary alcohols, aldehydes, and esters) and less alkanes and secondary alcohols in wax from cultured plants relative to those from greenhouse plants. Homologues in each class were more evenly distributed and had a greater range of chain lengths in wax from cultured plants. The high proportion of polar components in wax from cultured plants might be a factor in water loss when the plants are transferred to the greenhouse. Possible explanations for the altered wax composition in plants grown in vitro include increased relative humidity and decreased light intensity characteristic of in vitro conditions.

Chemical composition and ultrastructure of the epicuticular wax in three lines of Brassica napus (L)

1977 ◽  
Vol 19 (2) ◽  
pp. 114-127 ◽  
Author(s):  
P.J. Holloway ◽  
G.A. Brown ◽  
E.A. Baker ◽  
M.J.K. Macey
Keyword(s):  
Brassica Napus ◽  
Chemical Composition ◽  
Epicuticular Wax ◽  
Brassica Napus L
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