Chemistry of the metasternal gland secretion of the common eucalypt longicorn, Phoracantha semipunctata (Coleoptera: Cerambycidae)

1972 ◽  
Vol 25 (3) ◽  
pp. 591 ◽  
Author(s):  
BP Moore ◽  
WV Brown
Keyword(s):  
Gland Secretion ◽  
Volatile Components ◽  
Phoracantha Semipunctata ◽  
The Common ◽  
Cis And Trans ◽  
Metasternal Gland

The metasternal gland secretion of Phoracantha semipunctata contains five significant volatile components, of which the most abundant is 2-hydroxy-6-methyl-benzaldehyde (1). The second most abundant component, which has been named phoraoanthol, has been shown by synthesis to be (5-ethylcyclopent-1-enyl)methanol (2). The three other components are aldehydes, derivable from phoracanthol and cis- and trans-dihydrophoracanthols, respectively. Apparently all five components are related biosynthetically.

The chemistry of the metasternal gland secretion of the eucalypt longicorn Phoracantha synonyma (Coleoptera : Cerambycidae)

1976 ◽  
Vol 29 (6) ◽  
pp. 1365 ◽  
Author(s):  
BP Moore ◽  
WV Brown
Keyword(s):  
Ethyl Esters ◽  
Gland Secretion ◽  
Volatile Components ◽  
Minor Components ◽  
Macrocyclic Lactones ◽  
Widespread Occurrence ◽  
Metasternal Gland ◽  
Characteristic Odour

The metasternal gland secretion of Phoracantha synonyma contains a diversity of volatile components, one of which, 2-hydroxy-6-methylbenzaldehyde (1), is of widespread occurrence in the genus. Threemajor components and several minor components are macrocyclic lactones, of which the following have been positively identified: decan-9-olide (2), (2)-dec-4-en-9-olide (3) and 11-hydroxytetradec-5-en-13-olide (4). The methyl and ethyl esters of 2-methylbutyric and related acids are also present and are responsible for the characteristic odour of the fresh secretion.

scholarly journals Characterization of a Natural, Stable, Reversible and Colourful Anthocyanidin Network from Sphagnum Moss Based Mainly on the Yellow Trans-Chalcone and Red Flavylium Cation Forms

Molecules ◽  
2021 ◽  
Vol 26 (3) ◽  
pp. 709
Author(s):  
Helge Berland ◽  
Øyvind M. Andersen
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Cell Wall ◽  
Peat Moss ◽  
Sphagnum Moss ◽  
Naturally Occurring ◽  
Two Component ◽  
Colour System ◽  
The Common ◽  
Cis And Trans

Anthocyanins with various functions in nature are one of the most important sources of colours in plants. They are based on anthocyanidins or 3-deoxyanthocyanidins having in common a C15-skeleton and are unique in terms of how each anthocyanidin is involved in a network of equilibria between different forms exhibiting their own properties including colour. Sphagnorubin C (1) isolated from the cell wall of peat moss (Sphagnum sp.) was in fairly acidic and neutral dimethyl sulfoxide characterized by nuclear magnetic resonance (NMR) and ultraviolet–visible (UV–vis) absorption techniques. At equilibrium, the network of 1 behaved as a two–component colour system involving the reddish flavylium cationic and the yellow trans–chalcone forms. The additional D- and E-rings connected to the common C15-skeleton extend the π-conjugation within the molecule and provide both bathochromic shifts in the absorption spectra of the various forms as well as a low isomerization barrier between the cis- and trans-chalcone forms. The hemiketal and cis-chalcone forms were thus not observed experimentally by NMR due to their short lives. The stable, reversible network of 1 with good colour contrast between its two components has previously not been reported for other natural anthocyanins and might thus have potential in future photochromic systems. This is the first full structural characterization of any naturally occurring anthocyanin chalcone form.

Some volatile constituents of terrestrial slaters

1966 ◽  
Vol 19 (8) ◽  
pp. 1495 ◽  
Author(s):  
GWK Cavill ◽  
DV Clark ◽  
H Hinterberger
Keyword(s):  
Porcellio Scaber ◽  
Volatile Constituents ◽  
The Common ◽  
Cis And Trans ◽  
Unsaturated Component

The common terrestrial dater, Porcellio scaber, yields a volatile extractive, slaterol, which comprises cis- and trans-dec-3-en-1-ol (80%), together with cis- and trans-non-3-en-1-ol and nonan-1-ol (5%). The remaining and unsaturated component of slaterol (A, 15%), which gives decan-1-ol on reduction, has yet to be characterized. An undescribed Armadillidium sp. yields a single constituent, octan-1-ol.

Comparative Study of Volatile Components of Essential Oil from Conyza canadensis between Hydrodistillation and Steam Distillation

2010 ◽  
Vol 113-116 ◽  
pp. 1644-1647 ◽  
Author(s):  
Zhi Ming Liu ◽  
Hai Ying Wang ◽  
Shan Shan Liu ◽  
Nai Xiang Jiang
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Steam Distillation ◽  
Biomimetic Synthesis ◽  
Gas Chromatography Mass Spectrometry ◽  
Volatile Components ◽  
Conyza Canadensis ◽  
Aerial Parts ◽  
Germacrene D ◽  
The Common

The volatile components of essential oils of fresh aerial parts from horseweed (Conyza canadensis) collected in October with hydrodistillation and steam distillation, respectively, were analyzed by gas chromatography-mass spectrometry. The results showed that limonene, β-pinene, trans-α-bergamotene, cis-β-ocimene, β-myrcene, germacrene D, 1,3,8-p-menthatriene, caryophyllene, (E)-β-farnesene, (Z)-β-farnesene, α-curcumene, caryophyllene oxide were the common volatile components in the essential oils between hydrodistillation and steam distillation. High limonene content (68.87%) was in the essential oil with hydrodistillation. Limonene or other terpenoids has the potential to develop as the biomimetic synthesis template for environmentally-friendly herbicide.

Study of the Volatile Constituents in Atractlodesm acrocephala Koidz by Gas Chromatography–Mass Spectrometry and Combined Chemometric Methods

2013 ◽  
Vol 781-784 ◽  
pp. 45-50
Author(s):  
Xian Zhen Xie ◽  
Lan Fang Huang ◽  
Xiao Liang Feng ◽  
Yu Lin Wang
Keyword(s):  
Mass Spectrometry ◽  
Relative Content ◽  
Gas Chromatography Mass Spectrometry ◽  
Volatile Components ◽  
Chemometric Methods ◽  
Qualitative And Quantitative Analysis ◽  
Qualitative And Quantitative ◽  
Common Peak ◽  
The Common ◽  
Different Sources

A method for the study of the volatile components in Atractlodesm acrocephala Koidz from different sources with combined chemometrics methods was developed. After the volatile components in Atractlodesm acrocephala Koidz from two different locations were detected by GCMS, the qualitative and quantitative analysis of the volatile components of Atractlodesm acrocephala Koidz from Tiantai was conducted with SFA. Then, the common peak in Atractlodesm acrocephala Koidz sample from Xinan was extracted with orthogonal projection method. Among the identified components, there were 37 components coexisting in the studied samples although the relative content of each component showed difference to some extent. The obtained results can provide useful information for the developing of fingerprint of Atractlodesm acrocephala Koidz. It also can be used to compare the sameness and differences of Atractlodesm acrocephala Koidz from different sources and for quality control of Atractlodesm acrocephala Koidz.

Volatile components of anal gland secretion of aardwolf (Proteles cristatus)

1989 ◽  
Vol 15 (5) ◽  
pp. 1681-1688 ◽  
Author(s):  
P. J. Apps ◽  
H. W. Viljoen ◽  
P. R. K. Richardson ◽  
V. Pretorius
Keyword(s):  
Gland Secretion ◽  
Volatile Components ◽  
Anal Gland ◽  
Anal Gland Secretion

scholarly journals Effects of Monterey cypress (Cupressus macrocarpa Hartw) leaf essential oil as a dietary supplement on growth performance and haematological and biochemical parameters of common carp (Cyprinus carpio L.)

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Osman Sabri Kesbiç ◽  
Vincenzo Parrino ◽  
Ümit Acar ◽  
Sevdan Yilmaz ◽  
Giuseppe Lo Paro ◽  
...  
Keyword(s):  
Essential Oil ◽  
Growth Performance ◽  
Dietary Supplement ◽  
Common Carp ◽  
Cyprinus Carpio ◽  
Blood Parameters ◽  
Serum Glucose ◽  
Volatile Components ◽  
Leaf Essential Oil ◽  
The Common

AbstractCommon carp (Cyprinus carpio) is the most farmed freshwater fish worldwide. In recent years, use of natural products in fish diets has become popular in aquaculture, to improve fish health and growth performance. The present study investigated the effects of essential oil from the leaves of Monterey cypress (Cupressus macrocarpa; CMEO) on growth performance and blood parameters in common carp fingerlings. Identification of 96.1% of the CMEO total volatile components was achieved, with the highest contents for terpinen-4-ol and α-pinene, at 22.9% and 47.7%, respectively. After 60 days of feeding of the fingerlings with supplemented diets without CMEO (CMEO 0%) and with CMEO at 0.5%, 0.75% and 1%, the best growth performance was seen for those fish fed with the CMEO 0.5% diet. No significant differences were seen for the haematological parameters and blood cell indices versus CMEO 0%. Serum glucose, triglycerides, cholesterol and glutamic pyruvic transaminase were significantly reduced in the fingerlings fed with the CMEO 0.5% diet versus CMEO 0%. Thus, CMEO oil as a 0.5% dietary supplement can be used to improve the growth performance and health status of the common carp without any adverse effects seen.

Volatile components of the anal gland secretion of the striped polecatIctonyx striatus

1988 ◽  
Vol 23 (2) ◽  
pp. 136-137 ◽  
Author(s):  
P.J. Apps ◽  
H.W. Viljoen ◽  
V. Pretorius ◽  
E.R. Rohwer
Keyword(s):  
Gland Secretion ◽  
Volatile Components ◽  
Anal Gland ◽  
Anal Gland Secretion

scholarly journals The protein and volatile components of trail mucus in the Common Garden Snail, Cornu aspersum

PLoS ONE ◽  
2021 ◽  
Vol 16 (5) ◽  
pp. e0251565
Author(s):  
Kaylene R. Ballard ◽  
Anne H. Klein ◽  
Richard A. Hayes ◽  
Tianfang Wang ◽  
Scott F. Cummins
Keyword(s):  
Protein Extraction ◽  
Land Snail ◽  
Land Snails ◽  
Mass Spectrometry Analysis ◽  
Volatile Components ◽  
Significant Similarity ◽  
Diverse Range ◽  
Spectrometry Analysis ◽  
Cornu Aspersum ◽  
The Common

The Common or Brown Garden Snail, Cornu aspersum, is an invasive land snail that has successfully colonized a diverse range of global environments. Like other invasive land snails, it is a significant pest of a variety of agricultural crops, including citrus, grapes and canola. Cornu aspersum secretes a mucus trail when mobile that facilitates locomotion. The involvement of the trail in conspecific chemical communication has also been postulated. Our study found that anterior tentacle contact with conspecific mucus elicited a significant increase in heart rate from 46.9 to 51 beats per minute. In order to gain a better understanding of the constituents of the trail mucus and the role it may play in snail communication, the protein and volatile components of mucus trails were investigated. Using two different protein extraction methods, mass spectrometry analysis yielded 175 different proteins, 29 of which had no significant similarity to any entries in the non-redundant protein sequence database. Of the mucus proteins, 22 contain features consistent with secreted proteins, including a perlucin-like protein. The eight most abundant volatiles detected using gas chromatography were recorded (including propanoic acid and limonene) and their potential role as putative pheromones are discussed. In summary, this study has provided an avenue for further research pertaining to the role of trail mucus in snail communication and provides a useful repository for land snail trail mucus components. This may be utilized for further research regarding snail attraction and dispersal, which may be applied in the fields of agriculture, ecology and human health.

Sign in / Sign up

Export Citation Format

Share Document