SPME‐GC/MS Analysis of Volatile Compounds Contained in the Insect Larvae of Tenebrio molitor and Leptinotarsa decemlineata before and after Using Insecticides

2020 ◽  
Vol 17 (4) ◽  
Author(s):  
Marta Wojciechowska ◽  
Marek Gołębiowski
Keyword(s):  
Volatile Compounds ◽  
Leptinotarsa Decemlineata ◽  
Tenebrio Molitor ◽  
Insect Larvae ◽  
Ms Analysis ◽  
Before And After

scholarly journals Cultivation Conditions Change Aroma Volatiles of Strawberry Fruit

Horticulturae ◽  
2021 ◽  
Vol 7 (4) ◽  
pp. 81
Author(s):  
Yunduan Li ◽  
Yuanyuan Zhang ◽  
Xincheng Liu ◽  
Yuwei Xiao ◽  
Zuying Zhang ◽  
...  
Keyword(s):  
Volatile Compounds ◽  
Major Contributor ◽  
Fragaria Ananassa ◽  
Strawberry Fruit ◽  
Cultivation Conditions ◽  
Soil Culture ◽  
Aroma Volatiles ◽  
Ms Analysis ◽  
Significant Difference ◽  
Strawberry Cultivars

Volatile compounds principally contribute to flavor of strawberry (Fragaria × ananassa) fruit. Besides to genetics, cultivation conditions play an important role in fruit volatile formation. Compared to soil culture as control, effects of substrate culture on volatile compounds of two strawberry cultivars (‘Amaou’ and ‘Yuexin’) were investigated. GC-MS analysis revealed significant difference in volatile contents of ‘Amaou’ strawberry caused by substrate culture. No significant effect was observed for cultivar ‘Yuexin’. For ‘Amaou’ strawberry from soil culture produced higher volatile contents compared with substrate culture. This difference is contributed by high contents of esters, lactones, ketones, aldehydes, terpenes, hydrocarbons, acids, furans and phenols in ‘Amaou’ strawberry fruit from soil culture. Furanones, beta-linalool, trans-Nerolidol and esters are major contributor to strawberry aroma, whose contents are higher in soil culture planted fruit when compared to substrate culture. Moreover, strawberry fruit from soil culture had higher transcripts related to volatile biosynthesis were observed, including FaQR, FaOMT, FaNES1, FaSAAT and FaAAT2.

Dynamic-head space GC-MS analysis of volatile odorous compounds generated from unbleached and bleached pulps and effects on strength properties during ageing

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Izhar Alam ◽  
Swati Sood ◽  
Chhaya Sharma
Keyword(s):  
Volatile Compounds ◽  
Paper Mill ◽  
Strength Properties ◽  
Degree Of Polymerization ◽  
Ambient Conditions ◽  
Bleached Pulp ◽  
Tensile Index ◽  
Ms Analysis ◽  
Odorous Compounds ◽  
Unbleached Pulp

Abstract Mixed hardwood unbleached (UB) and final bleached (FB) pulp along with the pulp of intermediate bleaching stages from an integrated paper mill have been undertaken for this study. Headspace GC-MS analysis of these pulps was made to identify the odorous compounds which are volatile organic compounds (VOCs), generated during ageing for 60 days. The result showed that a number of pre-generated VOCs such as aliphatic hydrocarbons and aldehydes are observed in the pulp sample which might be came from the process and it has been observed that upon ageing at ambient conditions, some acid functionalized VOC were generated in the pulp. The generation of these VOCs were established by ATR-FTIR analysis and the results showed that intensity of peak absorbance near 3340  cm − 1 {\text{cm}^{-1}} and 1641  cm − 1 {\text{cm}^{-1}} which represents the –OH stretching of acidic functional group and C=O stretch of aldehyde and acidic functional groups increased after ageing. Generation of acid functionalized volatile compounds were observed more in bleached pulp than in unbleached pulp. Degree of polymerization (DP) is pretty much related to the strength of paper. DP of both unbleached and bleached pulp gets reduced upon ageing while more reduction were observed in bleached pulp. Bleached pulps are more prone to degrade as compared to the unbleached pulp in terms of strength properties such as tensile index, breaking length, burst and double fold were observed. 12.3 % and 21.8 % reduction in tensile index was observed for UB and final bleached FB pulp respectively. Burst index of UB and FB pulp were found reduced to 23.8 % and 41.9 % respectively due to ageing. Reduction in the mechanical and optical properties was also observed in intermediate bleaching stages. There is much evidence for the contribution of VOCs to the degradation of paper. The results are strongly suggested that acid functionalized volatile compounds can have strong effects on degradation of cellulosic paper.

GC-MS analysis of ethanol and other volatile compounds in micro-volume blood samples—quantifying neonatal exposure

2013 ◽  
Vol 405 (12) ◽  
pp. 4139-4147 ◽  
Author(s):  
Rebecca L. Cordell ◽  
Hitesh Pandya ◽  
Marie Hubbard ◽  
Mark A. Turner ◽  
Paul S. Monks
Keyword(s):  
Volatile Compounds ◽  
Neonatal Exposure ◽  
Blood Samples ◽  
Ms Analysis ◽  
Volume Blood

Feeding of cuticles from Tenebrio molitor larvae modulates the gut microbiota and attenuates hepatic steatosis in obese Zucker rats

2022 ◽  
Author(s):  
Armaghan Saeb ◽  
Sarah Maria Grundmann ◽  
Denise K Gessner ◽  
Sven Schuchardt ◽  
Erika Most ◽  
...  
Keyword(s):  
Gut Microbiota ◽  
Hepatic Steatosis ◽  
Mass Rearing ◽  
Tenebrio Molitor ◽  
Zucker Rats ◽  
Insect Larvae ◽  
Food And Feed ◽  
Obese Zucker Rats ◽  
Tenebrio Molitor Larvae

an alternative and sustainable source of food and feed. A byproduct from mass-rearing of insect larvae are the shed cuticles - the most external components of insects which are a...

scholarly journals Breeding the predatory bug Podisus maculiventris Say to protect potatoes from Leptinotarsa decemlineata Say

2021 ◽  
Vol 285 ◽  
pp. 03012
Author(s):  
Mariya Nefedova
Keyword(s):  
Leptinotarsa Decemlineata ◽  
Galleria Mellonella ◽  
Tenebrio Molitor ◽  
Climatic Conditions ◽  
Podisus Maculiventris ◽  
Artificial Reproduction ◽  
Potato Beetle ◽  
Leptinotarsa Decemlineata Say ◽  
The Russian Federation ◽  
Selection Of

The predator Podisus maculiventris Say is a representative of the order Hemiptera, family Pentatomidae. This insect is promising in the battle against the Colorado potato beetle Leptinotarsa decemlineata Say. For the successful use of P. maculiventris in the climatic conditions of the Russian Federation and other countries where this predator isn’t found, it is necessary to develop methods of its artificial reproduction. The paper provides information on the selection of food based on the use of phytophagous insects and pests. Among the subjects Galleria mellonella L. caterpillars, Tenebrio molitor L. larvae and pupae, Ephestia kuehniella Zll. caterpillars, as well as Zophobas morio Fabr larvae were used. As a result of the experiment, T. molitor was recognized as the most effective insect prey in terms of biological and economic indicators. When using Tenebrio molitor, the imago yield of P. maculiventris amounted to 81.0-90.5%, which was the best indicator in comparison with other options.

PTR-TOF-MS analysis of volatile compounds in olive fruits

2014 ◽  
Vol 95 (7) ◽  
pp. 1428-1434 ◽  
Author(s):  
Elisa Masi ◽  
Annalisa Romani ◽  
Camilla Pandolfi ◽  
Daniela Heimler ◽  
Stefano Mancuso
Keyword(s):  
Volatile Compounds ◽  
Ms Analysis ◽  
Tof Ms

Eugenol Found by GC-MS Analysis of The Methanolic Extract of The Fruit Pulp of Indigenous Mango (Mangifera indica L.) Variety, Champa from Murshidabad District of West Bengal, India

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Mitu De ◽  
Susanta Ray ◽  
Subhasree Dutta ◽  
Santi Ranjan Dey
Keyword(s):  
Volatile Compounds ◽  
West Bengal ◽  
Methanolic Extract ◽  
Mangifera Indica ◽  
Fruit Pulp ◽  
Ms Analysis ◽  
Bioactive Component ◽  
Herbal Plants ◽  
Michelia Champaca

Indigenous mango (Mangifera indica L.) varieties have unique aroma, taste, flavour, texture and size. The interactions among volatile compounds and with sugars and acids have a role in the distinct mango flavor. Murshidabad district of West Bengal has several indigenous mango varieties that have unique attributes like taste and aroma. The indigenous Champa mango variety of Murshidabad district has a distinct aroma very similar to that of the champaka flower (Michelia champaca L.). The present investigation was to determine if there was any phyto-chemical which could be responsible for the distinct and unique aroma present in the mango variety Champa. Eugenol, a phytogenic bioactive component frequently found in diversified herbal plants was found by GC-MS analysis of the methanolic extract of the fruit pulp of indigenous mango variety, Champa.

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