Category: 21834-92-4

Ceballos, Liena published the artcileOptimization of a HS-SPME/GC-MS method for determination of volatile compounds in some Cuban unifloral honeys, Name: 5-Methyl-2-phenylhex-2-enal, the main research area is honey volatile compound HS SPME GC MS Cuba.

A headspace (HS)/solid phase microextraction (SPME)/gas chromatog.-mass spectrometry (GC-MS) method was developed to determine the profiles of volatile compounds from three Cuban unifloral honeys: Turbina corymbosa (L.) Raf., Ipomoea triloba L. and Gouania polygama (Jacq.) Urb. The optimization of the extraction conditions was carried out by response surface methodol. The anal. conditions of the optimized HS-SPME method were: 65 μm PDMS/DVB fiber, 6 g honey, 3 mL water and 20% weight/weight sodium chloride, 20 min for pre-extraction, 30 min for extraction at 60C and 4 min for GC desorption. The GC-MS anal. allowed the identification of 181 volatile compounds in these honeys. Possible markers for the floral classification of honeys were for the T. corymbosa type: 4-Me methoxysalicylate, trans-pinocarveol, chavicol, Me anisate, trans-α-bergamotene and α-bisabolol. In I. triloba honey, 2,5,5-trimethyl-3-tetrahydrofuranone and 1,2-diphenylethanol were found, while 4-methyl-1-pentanol and isopentyl acetate were only present in G. polygama honey. With the use of the HS-SPME method in combination with multivariate anal. techniques such as Principal Component Anal. and K-nearest neighbor, it was possible to discriminate the different honeys according to their floral origin.

Journal of Food Quality published new progress about Apis mellifera. 21834-92-4 belongs to class isoquinoline, name is 5-Methyl-2-phenylhex-2-enal, and the molecular formula is C13H16O, Name: 5-Methyl-2-phenylhex-2-enal.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Zarini, Daniele published the artcileAre In Silico Approaches Applicable As a First Step for the Prediction of e-Liquid Toxicity in e-Cigarettes?, Synthetic Route of 21834-92-4, the main research area is toxicity electronic cigarette liquid QSAR model.

Recent studies have raised concerns about e-cigarette liquid inhalation toxicity by reporting the presence of chems. with European Union CLP toxicity classification. In this scenario, the regulatory context is still developing and is not yet up to date with vaping current reality. Due to the paucity of toxicol. studies, robust data regarding which components in tent. In this study we applied computational methods for studied chems. as a useful tool for predicting the acute toxicity of chems. contained in e-liquids The purpose of t the potential health concerns associated with e-liquid ingredients, (b) to prioritize e-liquid ingredients by calculating the e-tox index, and (c) to estimate acute toxicity of e-liquid mixtures QSAR models were generated using QSARINS software to fill the acute toxicity data gap of 264 e-liquid ingredients. As a second step, the potential acute toxicity of e-liquids mixtures was evaluated. Our preliminary data suggest that a computational approa serve as a roadmap to enable regulatory bodies to better regulate e-liquid composition and to contribute to consumer health protection.

Chemical Research in Toxicology published new progress about Acute toxicity. 21834-92-4 belongs to class isoquinoline, name is 5-Methyl-2-phenylhex-2-enal, and the molecular formula is C13H16O, Synthetic Route of 21834-92-4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Colonges, Kelly published the artcileIntegration of GWAS, metabolomics, and sensorial analyses to reveal novel metabolic pathways involved in cocoa fruity aroma GWAS of fruity aroma in Theobroma cacao, Category: isoquinoline, the main research area is Theobroma GWAS metabolomics fruity aroma protein sugar degradation; Aroma; Biochemical bases; Cocoa; Fruity note; GWAS; Genetic bases.

Nacional is a variety of cocoa tree known for its “”Arriba”” aroma characterised mainly by fruity, floral, and spicy aromatic notes. In this study, the genetic basis of the fruity aroma of modern Nacional cocoa was investigated. GWAS studies have been conducted on biochem. and sensorial fruity traits and allowed to identify a large number of association zones. These areas are linked to both the volatile compounds known to provide fruity flavours and present in the beans before and after roasting, and to the fruity notes detected by sensorial anal. Five main metabolic pathways were identified as involved in the fruity traits of the Nacional population: the protein degradation pathway, the sugar degradation pathway, the fatty acid degradation pathway, the monoterpene pathway, and the L-phenylalanine pathway. Candidate genes involved in the biosynthetic pathways of volatile compounds identified in association areas were detected for a large number of associations

Plant Physiology and Biochemistry (Issy-les-Moulineaux, France) published new progress about Analysis (GWAS). 21834-92-4 belongs to class isoquinoline, name is 5-Methyl-2-phenylhex-2-enal, and the molecular formula is C13H16O, Category: isoquinoline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Lou, X. W. published the artcileThe change of volatile compounds of two kinds of vinasse-cured ducks during processing, Product Details of C13H16O, the main research area is duck vinasse wet dry curing butenal hexane moisture flavor.

Vinasse-cured duck was processed by boiling, salting, and vinasse-dry-curing or vinasse-wet-curing. Volatile compounds, moisture contents, reducing sugars, and thiobarbituric acid reactive substances (TBARS) values during processing were determined Reducing sugars decreased during boiling and increased after vinasse-curing. TBARS values increased throughout the processing. The volatiles of ducks during processing and vinasse-curing agents (dry vinasse and vinasse sauce) were 125 compounds The first principal component (PC1) belonged to the flavor of cooked duck, whereas the second principal component (PC2) represented the flavor of yellow rice wine. The 66.49 and 29.61% of typical aroma of vinasse-dry-cured product were from dry vinasse and lipid oxidation, resp., whereas the 75.58 and 21.89% of aroma of vinasse-wet-cured product were from vinasse sauce and lipid oxidation, resp. Lipid oxidation products increased after boiling, whereas salting promoted their release. Compared with vinasse-wet-cured duck, vinasse-dry-cured product presented richer aroma of lipid oxidation and weaker flavor of vinasse-curing agents. Besides, protein denaturation which was caused by ethanol could influence the retention and release of flavor. In conclusion, two kinds of vinasse-curing methods influenced the characteristic volatiles of products and their generation during processing.

Poultry Science published new progress about Anas domesticus. 21834-92-4 belongs to class isoquinoline, name is 5-Methyl-2-phenylhex-2-enal, and the molecular formula is C13H16O, Product Details of C13H16O.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Li, Z. published the artcileBacterial communities and volatile compounds in Doubanjiang, a Chinese traditional red pepper paste, Application of 5-Methyl-2-phenylhex-2-enal, the main research area is bacteria doubanjiang volatile compound; Doubanjiang; Pseudomonas; core bacterial community; partial least squares regression; volatile compounds.

Aim : To identify core bacterial communities and volatile compounds and to investigate their relationships in Doubanjiang, a Chinese traditional red pepper paste. Methods and Results : Two main culture-independent methods, polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE) and MiSeq sequencing technique, were used to investigate bacterial composition Headspace solid-phase microextraction combined with gas chromatog.-mass spectrometry (HS-SPME-GC-MS) was used to isolate and identify volatile organic compounds Partial least squares (PLS) regression and correlation coefficients analyses were used for elucidating the relationship between core bacterial community and volatile compounds Conclusions : Lactic acid bacteria (LAB) and Enterobacteriaceae family were identified primarily by the PCR-DGGE fingerprinting. Furthermore, the core microbiome (>1% average relative abundance) were indentified by Miseq sequencing technique, which mainly assigned to Proteobacteria, Cyanobacteria and Firmicutes phyla. For volatile profile, a total of 29 volatile compounds were identified by HP-SPME-GC-MS, mainly alcs., esters, aldehydes, ketones and phenols. PLS regression and Pearson’s correlation coefficients analyses revealed highly covariable relationships between volatile compounds and bacterial taxa. Notably, Pseudomonas most highly significantly associated with 3-Me butanal, 2-Me butanal, benzeneacetaldehyde and 2-acetylpyrrole (P < 0·001), and significantly correlated with 5-methylfurfural and 5-methyl-2-phenyl-2-hexenal (P < 0·01). Significance and Impact of the Study : Core bacterial communities were identified and the relationship between bacterial taxa and flavor compounds was revealed, these results could be beneficial for improving the quality of Doubanjiang. Journal of Applied Microbiology published new progress about Bacillus cereus. 21834-92-4 belongs to class isoquinoline, name is 5-Methyl-2-phenylhex-2-enal, and the molecular formula is C13H16O, Application of 5-Methyl-2-phenylhex-2-enal.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Cai, Luyun published the artcileChange regularity of the characteristics of Maillard reaction products derived from xylose and Chinese shrimp waste hydrolysates, Synthetic Route of 21834-92-4, the main research area is Fenneropenaeus waste hydrolyzate xylose Maillard reaction product sensory property.

Chinese shrimp waste hydrolyzates (CSWHs) with or without xylose were heated with increasing time (0-180 min) at 115 °C, pH 8.0, to explored characteristics of Maillard reaction and the rules for the formation of flavor in hydrolyzates. The results suggested that CSWHs could be modified by Maillard reaction and exhibited stronger pleasant flavor than thermal degradation at proper heating time. During Maillard reaction, significant changes in Maillard reaction products (MRPs) were found, such as the accumulation of intermediate/browning/fluorescent products, the presentation of tempting reddish-brown, compared to Thermal degradation products (TDPs). Meanwhile, a series of volatile compounds and amino acids were found in MRPs, and combined with sensory evaluation, the MRPs exhibited strong meaty and seafood aroma as well as umami and mouthfulness taste. Therefore, Chinese shrimp waste could potentially be used to produce flavoring essence with strong enticing flavor and color.

LWT–Food Science and Technology published new progress about Browning (food). 21834-92-4 belongs to class isoquinoline, name is 5-Methyl-2-phenylhex-2-enal, and the molecular formula is C13H16O, Synthetic Route of 21834-92-4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Lee, Changgook published the artcileImproving the extraction of headspace volatile compounds: development of a headspace multi-temperature solid-phase micro-extraction-single shot-gas chromatography/mass spectrometry (mT-HSSPME-ss-GC/MS) method and application to characterization of ground coffee aroma, Recommanded Product: 5-Methyl-2-phenylhex-2-enal, the main research area is volatile compound HSSPME GCMS ground coffee aroma.

A multi-temperature headspace solid-phase micro-extraction-single shot-gas chromatog./mass spectrometry (mT-HSSPME-ss-GC/MS) method has been developed for headspace anal. Three SPME fibers (50/30 μm DVB/CAR/PDMS) were used simultaneously for the extraction of volatile components from the headspace of a sample in three sample chambers at three different temperatures A cryo-focusing technique was adopted to avoid peak broadening and to maximize resolution during the sequential thermal desorption of the SPME fibers prior to a ‘single-shot’ chromatog. run. The method was developed and validated on a model ethanolic flavor mixture, containing 81 components. Comparison of mT-HSSPME-ss-GC/MS (10 min incubation time, then 30 min extraction time at 22, 50, and 70 °C extraction temperatures) with conventional SPME-GC/MS at a fixed temperature of 22, 50, or 70 °C showed that the former gave a headspace GC profile of the flavor mixture that was much closer to that of the syringe (direct) injection profile. None of the conventional headspace SPME extraction profiles were a good match to the syringe injection profile. The same technique applied to the headspace of coffee grounds gave a plentiful headspace volatile component profile compared to that of a single SPME anal. at a fixed single extraction temperature (22, 50, and 70 °C). The average percent recovery (defined for each component as 100 × mT-SPME (22 °C + 50 °C + 70 °C) TIC peak intensity divided by the arithmetic sum of individual temperature SPME (22 °C, 50 °C, 70 °C) TIC peak intensities) was 89.8% and 132 components were detected by mT-SPME-ss-GC/MS in the headspace of coffee grounds.

Analytical Methods published new progress about Coffee beverages. 21834-92-4 belongs to class isoquinoline, name is 5-Methyl-2-phenylhex-2-enal, and the molecular formula is C13H16O, Recommanded Product: 5-Methyl-2-phenylhex-2-enal.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Zhang, Yuyu published the artcilePreparation and aroma analysis of Chinese traditional fermented flour paste, Safety of 5-Methyl-2-phenylhex-2-enal, the main research area is aroma compound Chinese traditional fermented flour paste.

Volatile compounds in Chinese fermented flour paste were extracted using simultaneous distillation and extraction (SDE) and analyzed using gas chromatog.-mass spectrometry (GC-MS) with DB-5 and DB-WAX capillary columns. A total of 84 volatile compounds were identified, including 8 aldehydes, 19 esters, 14 acids, 17 hydrocarbons, 7 heterocycles, and 19 other trace compounds The major volatiles included furfural, 5-methyl-2-phenyl-2-hexenal, 4-ethylguaiacol, 2-phenylacetaldehyde, Et hexadecanoate, isovaleraldehyde, palmitic acid, and 5-methylfurfural. Aroma compounds were investigated using gas chromatog.-olfactometry (GC-O) and aroma extract dilution anal. (AEDA). A total of 27 olfactory regions were exposed and 18 aroma extracts were located. Altogether, 6 aroma compounds identified using GC-O showed higher flavor dilution factors (FD≥32), including isovaleraldehyde, furfural, pentanoic acid, 2-acetylfuran, 1-octen-3-ol, and 2-phenylacetaldehyde. Compared with soybean sauce, fermented flour paste has more esters and aldehydes, which contribute to the desired fruity, caramel, sweet, and roasted odors.

Food Science and Biotechnology published new progress about Flours and Meals. 21834-92-4 belongs to class isoquinoline, name is 5-Methyl-2-phenylhex-2-enal, and the molecular formula is C13H16O, Safety of 5-Methyl-2-phenylhex-2-enal.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Ebbrell, David J. published the artcileValidation of a Fragment-Based Profiler for Thiol Reactivity for the Prediction of Toxicity: Skin Sensitization and Tetrahymena pyriformis, Name: 5-Methyl-2-phenylhex-2-enal, the main research area is skin sensitization aquatic toxicity human health.

This study outlines the use of a recently developed fragment-based thiol reactivity profiler for Michael acceptors to predict toxicity towards Tetrahymena pyriformis and skin sensitization potency as determined in the Local Lymph Node Assay (LLNA). The results showed that the calculated reactivity parameter from the profiler, -log RC50(calc), was capable of predicting toxicity for both endpoints with excellent statistics. However, the study highlighted the importance of a well-defined applicability domain for each endpoint. In terms of Tetrahymena pyriformis this domain was defined in terms of how fast or slowly a given Michael acceptor reacts with thiol leading to two sep. quant. structure-activity models. The first, for fast reacting chems. required only 1Log RC50(calc) as a descriptor, while the second required the addition of a descriptor for hydrophobicity. Modeling of the LLNA required only a single descriptor, -log RC50(calc), enabling potency to be predicted. The applicability domain excluded chems. capable of undergoing polymerization and those that were predicted to be volatile. The modeling results for both endpoints, using the 1log RC50(calc) value from the profiler, were in keeping with previously published studies that have utilized exptl. determined measurements of reactivity. This results demonstrate the output from the fragment-based thiol reactivity profiler can be used to develop quant. structure-activity relationship models where reactivity towards thiol is a driver of toxicity.

Chemical Research in Toxicology published new progress about Aquatic toxicity. 21834-92-4 belongs to class isoquinoline, name is 5-Methyl-2-phenylhex-2-enal, and the molecular formula is C13H16O, Name: 5-Methyl-2-phenylhex-2-enal.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Yang, Huilin published the artcileExploring functional core bacteria in fermentation of a traditional Chinese food, Aspergillus-type douchi, Product Details of C13H16O, the main research area is Aspergillus douche traditional Chinese food fermentation bacteria.

Douchi is a type of traditional Chinese flavoring food that has been used for thousands of years and is produced by multispecies solid-state fermentation However, the correlation between the flavor, the microbiota, and the functional core microbiota in Aspergillus-type douchi fermentation remains unclear. In this study, Illumina MiSeq sequencing and chromatog. were used to investigate the bacterial community and flavor components in Aspergillus-type douchi fermentation The dominant phyla were Firmicutes, Proteobacteria, and Actinobacteria, and the dominant genera were Weissella, Bacillus, Anaerosalibacter, Lactobacillus, Staphylococcus, and Enterococcus. A total of 58 flavor components were detected during fermentation, including two alcs., 14 esters, five pyrazines, three alkanes, four aldehydes, three phenols, six acids, and five other compounds Bidirectional orthogonal partial least square modeling showed that Corynebacterium_1, Lactococcus, Atopostipes, Peptostreptococcus, norank_o__AKYG1722, Truepera, Gulosibacter, norank_f__Actinomycetaceae, and unclassified_f__Rhodobacteraceae are the functional core microbiota responsible for the formation of the flavor components during douchi fermentation This is the first study to investigate the functional core microbiota in douchi fermentation using Illumina MiSeq sequencing and chromatog. techniques. Our findings extend our understanding of the relationships between flavor, the microbiota, and the functional core microbiota during Aspergillus-type douchi fermentation

PLoS One published new progress about Actinomycetaceae. 21834-92-4 belongs to class isoquinoline, name is 5-Methyl-2-phenylhex-2-enal, and the molecular formula is C13H16O, Product Details of C13H16O.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem