scholarly journals The Scent of Himantoglossum Species Found in Basilicata (Southern Italy)

Compounds ◽  
2021 ◽  
Vol 1 (3) ◽  
pp. 164-173
Author(s):  
Marisabel Mecca ◽  
Rocco Racioppi ◽  
Vito Antonio Romano ◽  
Licia Viggiani ◽  
Richard Lorenz ◽  
...  
Keyword(s):  
Solid Phase Microextraction ◽  
Southern Italy ◽  
Solid Phase ◽  
Main Components ◽  
Main Component

The SPME (Solid Phase Microextraction) analysis of the scent of H. hircinum showed the presence of elemicin in the presence of a relevant amount of eugenol. The scent of the sample of H. adriaticum collected in Abruzzo showed the presence 4-amino-5-(4-morpholinylmethyl)-2-oxazolidinone, β-ocimene, decyl decanoate, and 9-tricosene as main components. The sample of H. adriaticum collected at Marsico Nuovo has an aroma where the main component was pentadecyl hexanoate, 9-tricosene, methyleugenol, tetradecane, pentadecane, and elemicin. The samples of H. adriaticum collected at Viggianello showed some similarities in the scent: the main components were 9-tricosene and methyleugenol.

scholarly journals Volatile Organic Compounds from Orchis Species Found in Basilicata (Southern Italy)

Compounds ◽  
2021 ◽  
Vol 1 (2) ◽  
pp. 83-93
Author(s):  
Marisabel Mecca ◽  
Rocco Racioppi ◽  
Vito A. Romano ◽  
Licia Viggiani ◽  
Richard Lorenz ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Solid Phase Microextraction ◽  
Main Product ◽  
Southern Italy ◽  
Solid Phase ◽  
Gas Chromatography Mass Spectrometry ◽  
Orchid Species ◽  
Volatile Organic ◽  
Main Components

This study is part of a project devoted to determining the scent of all the orchid species present in Basilicata. All the analyses were performed by using the solid-phase microextraction technique coupled with gas chromatography-mass spectrometry. The scent of eight species belonging to the Orchis genus was investigated. In the case of O. anthropophora, caryophyllene, tetradecanal and hexadecanal were the main components of the aroma; in O. purpurea, 3,5-dimethoxytoluene and elemicin were found; in O. italica, caryophyllene and 4-(3-hydroxy-2-methoxyphenyl)butan-2-one were found; in O. pauciflora, linalool and 1,4-dimethoxybenzene were found; in O. mascula, linalool was found; in O. quadripunctata, penta- and heptadecane were found; in O. provincialis, β-farnesene and farnesal were found; and in O. pallens, curcumene was the main product.

scholarly journals Identification and evaluation of (3Z,6Z,8E)-dodeca-3,6,8-trien-1-ol as the trail following pheromone on Microcerotermes exiguus (Isoptera:Termitidae)

2017 ◽  
Vol 66 (1) ◽  
pp. 303
Author(s):  
Giuseppe Lubes ◽  
Aivle Cabrera
Keyword(s):  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Whole Body ◽  
Fragmentation Pattern ◽  
Control Methods ◽  
Trail Following ◽  
Sternal Glands ◽  
Main Component ◽  
Behavioral Assays ◽  
As Solid Phase

Trail-following pheromone is one of the most important semiochemical in termites. This pheromone is responsible for the recruitment of individuals from the colony to perform different tasks. The aim of this work was to isolate and identify the trail-following pheromone of Microcerotermes exiguus (Isoptera: Termitidae), a typical termite from the Neotropic, that is considered pest in some crops. Subterranean nest of M. exiguus were collected with a shovel in Caracas, Venezuela in 2010. Different chemical micro-reactions combined with chromatographic analysis of solvent extracts, as well as solid phase microextraction analyses (SPME) were applied to termite sternal glands; besides, some behavioral biossays were undertaken. A peak in the chromatograms from extracts (retention index: 1483), presented a fragmentation pattern with m/z ions: 41; 55; 67; 79; 91; 105; 119; 135; 142; 180, this result alongside behavioral assays allowed us to conclude that (3Z,6Z,8E)-dodeca-3,6,8-trien-1-ol (DTOH) acts as the main component of the trail following pheromone. The estimated optimum concentration for termite recruitment and orientation was around 1 pg/cm, being statistically comparable to the value on trails marked with whole body extracts at concentration of 1 worker/cm. The period of time that this compound takes to recruit other colony members is 13.67 ± 5.76 s and lasts up to two hours. Both analytical and behavioral results provided better understanding on the chemical communication of M. exiguus. This information could be used for the future development of newer pest control methods. 

scholarly journals Method Validation and Evaluation of Safrole Persistence in Cowpea Beans Using Headspace Solid-Phase Microextraction and Gas Chromatography

Molecules ◽  
2021 ◽  
Vol 26 (22) ◽  
pp. 6914
Author(s):  
Maria Suely Siqueira Ferraz ◽  
Lêda Rita D’Antonino Faroni ◽  
Fernanda Fernandes Heleno ◽  
Adalberto Hipólito de Sousa ◽  
Lucas Henrique Figueiredo Prates ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Solid Phase Microextraction ◽  
Limit Of Detection ◽  
Solid Phase ◽  
Agricultural Pests ◽  
Limit Of Quantification ◽  
Headspace Solid Phase Microextraction ◽  
Flame Ionization ◽  
Stored Grains ◽  
Main Component

Bioinsecticides are regarded as important alternatives for controlling agricultural pests. However, few studies have determined the persistence of these compounds in stored grains. This study aimed at optimizing and validating a fast and effective method for extraction and quantification of residues of safrole (the main component of Piper hispidinervum essential oil) in cowpea beans. It also sought to assess the persistence of this substance in the grains treated by contact and fumigation. The proposed method used headspace solid-phase microextraction (HS-SPME) and gas chromatography with a flame ionization detector (GC/FID). Factors such as temperature, extraction time and type of fiber were assessed to maximize the performance of the extraction technique. The performance of the method was appraised via the parameters selectivity, linearity, limit of detection (LOD), limit of quantification (LOQ), precision, and accuracy. The LOD and LOQ of safrole were 0.0057 and 0.019 μg kg−1, respectively and the determination coefficient (R2) was >0.99. The relative recovery ranged from 99.26 to 104.85, with a coefficient of variation <15%. The validated method was applied to assess the persistence of safrole residue in grains, where concentrations ranged from 1.095 to 0.052 µg kg−1 (contact) and from 2.16 to 0.12 µg kg −1 (fumigation). The levels measured up from the fifth day represented less than 1% of the initial concentration, proving that safrole have low persistence in cowpea beans, thus being safe for bioinsecticide use. Thus, this work is relevant not only for the extraction method developed, but also for the possible use of a natural insecticide in pest management in stored grains.

Effect of Cu2+ on Ascorbic Acid - Methionine Pattern is Formed by the Reaction of Aroma Compounds

2013 ◽  
Vol 803 ◽  
pp. 103-107
Author(s):  
Fan Peng ◽  
Xiao Hong Yang
Keyword(s):  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Gas Chromatography Mass Spectrometry ◽  
Reaction Products ◽  
Yield Increase ◽  
The One ◽  
Main Components ◽  
Sulfur Containing ◽  
Form Effect ◽  
Sulfur Containing Compounds

Using solid phase microextraction - Gas Chromatography - mass spectrometry (SPME-GC-MS) technique to acid and methionine bad blood (ASA-Met) analysis of the reaction products, the influence of Cu2+ on the model reaction flavor compounds form effect. 27 flavour compounds thiophene, furan, pyrazine, sulfur and other compounds, were identified, including sulfur compounds, such as aliphatic cyclic sulfides, sulfide, thiophene, pyrazine as main components. Cu2+ was added to the reaction mode, on the one hand, sulfur-containing compounds yield increased significantly; on the other hand, increasing the thiophene, pyrazine compound types, yield increase.

(E,E)-α-Farnesene the Main Substance of the Volatiles of the Flowers from European Mistletoe (Viscum album L.)

2002 ◽  
Vol 57 (1-2) ◽  
pp. 205-207 ◽  
Author(s):  
Michael Bungert ◽  
Rolf Thiel ◽  
Peter Goedings ◽  
Hans Becker
Keyword(s):  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Viscum Album ◽  
Volatile Fraction ◽  
Male And Female ◽  
Main Substance ◽  
Host Trees ◽  
Main Component ◽  
Female Flowers

(E,E)-α-Farnesene was extracted as the main component of the volatile fraction of male Viscum album L. Male and female flowers of V. album L. growing on different host trees were analysed by solid phase microextraction and by lipophilic extraction.

scholarly journals Identification and Evaluation of Aromatic Volatile Compounds in 26 Cultivars and 8 Hybrids of Freesia hybrida

Molecules ◽  
2021 ◽  
Vol 26 (15) ◽  
pp. 4482
Author(s):  
Shidan Weng ◽  
Xueqing Fu ◽  
Yu Gao ◽  
Tianlei Liu ◽  
Yi Sun ◽  
...  
Keyword(s):  
Clustering Analysis ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Floral Scent ◽  
Principal Component ◽  
Gas Chromatography Mass Spectrometry ◽  
Commercial Application ◽  
Freesia Hybrida ◽  
Volatile Organic ◽  
Main Component

Freesia hybrida is a group of cultivars in the genus Freesia with a strong floral scent composed of diverse volatile organic compounds (VOCs). In this study, the VOCs of 34 F. hybrida were extracted and analyzed by headspace solid phase microextraction and gas chromatography mass spectrometry (HS-SPME-GC-MS). A total of 164 VOCs whose relative contents were higher than 0.05% were detected. The numbers of VOCs in all germplasms differed between 11 to 38, and the relative contents ranged from 32.39% to 94.28%, in which most germplasms were higher than 80%. Terpenoids, especially monoterpenes, were the crucial type of VOCs in most germplasms, of which linalool and D-limonene were the most frequently occurring. Principal component analysis (PCA) clearly separated samples based on whether linalool was the main component, and hierarchical clustering analysis (HCA) clustered samples into 4 groups according to the preponderant compounds linalool and (E)-β-ocimene. Comparison of parental species and hybrids showed heterosis in three hybrids, and the inherited and novel substances suggested that monoterpene played an important role in F. hybrida floral scent. This study established a foundation for the evaluation of Freesia genetic resources, breeding for the floral aroma and promoting commercial application.

scholarly journals GC-MS Analysis of Volatile Components in Partridge Tea (Mallotus obongifolius)

HortScience ◽  
2019 ◽  
Vol 54 (8) ◽  
pp. 1288-1292
Author(s):  
Shao-chang Qin ◽  
Juan-ling Li ◽  
Abdul Kareem ◽  
Yong Wang
Keyword(s):  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Hainan Island ◽  
Gas Chromatography Mass Spectrometry ◽  
Volatile Components ◽  
Germplasm Identification ◽  
Mature Leaves ◽  
Green Leaves ◽  
Young Leaves ◽  
Main Components

Partridge tea is one of the famous local herbal teas of Hainan Island, China. In the present study, headspace solid-phase microextraction and gas chromatography-mass spectrometry were combined to determine and analyze the volatile components in the red and green leaves of partridge tea. Seventeen volatile components were identified in the red young leaves. The olefins, alkanes, and alcohols accounted for 71.24%, 1.1%, and 0.54%, among which the main components were caryophyllene (22.50%), humulene (18.73%), and α-guaiene (8.78%), respectively. Twenty volatile components were identified from red mature leaves, including 34.74% olefins, 6.14% esters, and 3.11% acids. Eighteen volatile components were identified from green young leaves, among which olefins (70.52%), alkanes (4.32%), and alcohol (0.89%) were the major components. Nineteen volatile components were identified from green mature leaves, among which the olefins, esters, and acids were the major components with the contents of 46.04%, 6.38%, and 1.37%, respectively. Results showed that the major volatile components of partridge tea were olefins, in which caryophyllene was the most abundant. The contents of volatile components between red leaves and green leaves had notable differences, which might be useful for germplasm identification of partridge tea.

Determining the Residual Characteristics of Alkylphenols, Arsenic, and Lead as well as Assessing the Exposures of 1,4-Dioxane from Household Food Detergents

2017 ◽  
Vol 100 (4) ◽  
pp. 1086-1093
Author(s):  
Wan-Ting Lin ◽  
Wun-Ling Chen ◽  
Wei-Chih Cheng ◽  
Hui-Chuan Chang ◽  
Shih-Wei Tsai
Keyword(s):  
Solid Phase Microextraction ◽  
Immersion Time ◽  
Fruits And Vegetables ◽  
Solid Phase ◽  
The Other ◽  
Taguchi Experimental Design ◽  
Health Concerns ◽  
Human Carcinogen ◽  
Household Food ◽  
Main Components

Abstract Food detergents are commonly used in households. The main components of detergents include surfactants and water. It has been found that certain compounds, which may cause health concerns, appear in food detergents, such as alkylphenols, arsenic, and lead. After applying food detergents is when people may be exposed to various levels of these chemicals when there are residues. In this study, the Taguchi experimental design was performed to determine the possible factors that might affect the residual characteristics of food detergent on dishware, fruits, and vegetables. The results showed that the variety of detergent was found to be the most significant factor affecting the residue amounts of arsenic (62.9%) and lead (71.6%) on fruits and vegetables, whereas the concentration of detergent used affected the amount of lead residue only (10.5%). On the other hand, dishware material, the concentration of analytes, immersion time, and type of surfactant contributed to arsenic residues on dishware, whereas technical nonylphenol isomer residues on dishware increased as the concentration of spiked analyte increased. In addition, the occurrence of 1,4-dioxane, a possible human carcinogen, in household food detergents in Taiwan was also determined in this research by solid-phase microextraction and GC-MS. Among the 80 detergent samples, 71 contained different concentrations ranges of 1,4-dioxane, from 0.03 to ~3.73 µg/g. In the exposure assessment, it was estimated that the maximum amounts of 1,4-dioxane in contact with the skin from the use of household food detergent in Taiwan was 0.015 µg/kg/day.

Chemical constituents comparison of essential oils of aerial parts of Conium maculatum L. growing wild in Iran by hydrodistillation, microwave assisted hydrodistillation and solid phase microextraction methods

2015 ◽  
Vol 9 (2) ◽  
pp. 48-50 ◽  
Author(s):  
N. Rastakhiz ◽  
P. Aberoomand Azar ◽  
M. Saber Tehrani ◽  
M. Moradalizadeh ◽  
K. Larijani
Keyword(s):  
Essential Oils ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Chemical Constituents ◽  
Present Report ◽  
Conium Maculatum ◽  
Microwave Assisted ◽  
Toxic Plants ◽  
Aerial Parts ◽  
Main Components

The present report deals with the analysis comparison of the essential oils from aerial parts of Conium maculatum L. growing wild in Iran were obtained by hydrodistillation, microwave assisted hydrodistillation and solid phase microextraction methods and collected essential oils were analyzed by GC and GC-MS. The plant is a member of the Apiaceae family of rhizomal plant which are usually 120-180cm high. C. maculatum which is also called as Poison hemlock is refered to as one of the most toxic plants. The volatiles were isolated from dried aerial parts of the plant. Twenty two compounds were identified representing 73.8% of total volatiles obtained by HD and the major constituents of the essential oil were α-pinene(16.2%), camphene (9.9%), limonen(8.6%) and linalool(5.3%).Sixteen compounds were identified representing 74.6% of total oils obtained by MAHD and the main components were camphene(13.0%) , limonene(8.7%) , linalool(8.4%) and Fenchyl acetate(7.6%) .Nine compounds were identified representing 99.8% of total oils obtained by SPME and the main components were α-pinene(42.1%), sabinene(16.2%0), limonene ( 11.3%),camphene(9.5%) and myrcene(7.9%).DOI: http://dx.doi.org/10.3126/ijls.v9i2.12056 International Journal of Life Sciences 9 (2) : 2015; 48-50

scholarly journals Comparative chemical analysis of volatile compounds of Echinops ilicifolius using hydrodistillation and headspace solid-phase microextraction and the antibacterial activities of its essential oil

2018 ◽  
Vol 5 (2) ◽  
pp. 171424 ◽  
Author(s):  
Razieh Mohebat ◽  
Mina Zare Bidoki
Keyword(s):  
Volatile Compounds ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Antibacterial Activities ◽  
Gram Negative Bacteria ◽  
Hexadecanoic Acid ◽  
Inhibitory Zone ◽  
Headspace Solid Phase Microextraction ◽  
Growth Inhibitory ◽  
Main Components

The volatile compounds from various parts of Echinops ilicifolius (Compositae) such as flowers, leaves and roots obtained by hydrodistillation (HD) and headspace solid-phase microextraction (HS-SPME) methods were subsequently analysed by GC and GC/MS and compared. Thirty-seven and 20 components of the flower of E. ilicifolius were characterized, representing 99.7% and 100.0% of the total compositions using the HD and HS-SPME methods, respectively. The major constituents of the hydrodistilled oil were identified as linalool (58.6%), geraniol (17.4%), n -dodecane (10.9%) and nerol (5.4%), whereas HS-SPME extract was rich in n -octane (34.0%), n -decane (25.1%), p -cymene (11.1%), γ -terpinene (5.3%) and 1,8-cineole (5.1%). n -Hexadecanoic acid (32.3%), linalool (16.4%) and geraniol (8.3%) were the main components among 43 constituents identified in hydrodistilled extract of the leaf, representing 99.5% of the total components detected, whereas 16 compounds representing 99.9% of the HS-SPME method were identified, among which n -decane (32.6%), p -cymene (14.0%), n -octane (10.3%), limonene (9.2%), γ -terpinene (9.1%), 1,8-cineole (7.9%) and α -pinene (5.9%) were the major ones. Among 23 components comprising 91.2% of the total hydrodistilled oil detected, n -decane (23.1%), n -dodecane (14.5%), silphiperfol-4,7(14)-diene (11.1%), selin-11-en-4-a-ol (9.5%), n -hexadecanoic acid (7.8%) and n -tetradecane (5.3%) were the main constituents in the root of E. ilicifolius , whereas 1,8-cineole (29.0%), n -decane (12.6%), n -octane (12.6%), camphor (12.0%), p -cymene (9.6%) and γ -terpinene (5.9%) were the main components among the 20 constituents characterized in HS-SPME extract, representing 99.9% of the total components detected. The antibacterial activity of the flower, leaf and root oils of E. ilicifolius against six Gram-positive and Gram-negative bacteria was determined using the MIC method. The growth inhibitory zone (mm) was also measured.

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