Category: 13925-00-3

Xu, Dan; Zhou, Xiaoping; Lei, Chunni; Shang, Yan; Zhao, Yuci; Wang, Zhaojun; Zeng, Fankui; Liu, Gang published an article about the compound: 2-Ethylpyrazine( cas:13925-00-3,SMILESS:CCC1=NC=CN=C1 ).Category: chiral-catalyst. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:13925-00-3) through the article.

In this study, we systematically analyzed the effect of raw dehydrated potato flour (RDPF) on texture properties, sensory evaluation, color parameters, nutritional quality, and volatile aroma compounds of biscuits and cookies, which were fortified with RDPF at ratio of 10%, 30%, and 50%, resp. The results showed that RDPF reduced thickness and hardness, increased the fracturability slightly, and decreased the sensory score in color, aroma, and crispiness. Furthermore, RDPF biscuits and cookies possessed lower L* value and higher a* and b* values, exhibited higher comprehensive nutritional quality compared with the control. Based on comprehensive nutritional values, biscuit was a better choose. A total of 86 volatile aroma compounds were detected, and the compounds were significantly different among groups. Rheol. properties demonstrated that water absorption rate increased, while the strength of the gluten and the viscosity of the mixed dough decreased with the increasing level of the RDPF. Practical applications : This study can not only confirm the nutritional characteristics and volatile aroma compounds of RDPF biscuits and cookies but also guide potato producers improving processing methods. Our future research is to create potato foods with Chinese characteristics and more striking potato foods based on the characteristics of nutritional and processing of different types.

This compound(2-Ethylpyrazine)Category: chiral-catalyst was discussed at the molecular level, the effects of temperature and reaction time on the properties of the compound were discussed, and the optimum reaction conditions were selected.

Reference:
Chiral Catalysts,
Chiral catalysts – SlideShare

In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Effects of cigarette filter design on release behavior of monomer flavor in breakable capsule, published in 2021, which mentions a compound: 13925-00-3, mainly applied to cigarette filter alc ketone ester, Reference of 2-Ethylpyrazine.

In order to investigate the influences of cigarette filter design on the release of monomer flavor components in breakable capsules, the effects of capsule location in filter and filter ventilation on the transfer rates and puff-by-puff releases of 40 representative monomer flavor components in mainstream cigarette smoke were analyzed. The results showed that: 1) Capsule location in filter and filter ventilation levels significantly affected the transfer rates of the aroma components. The transfer rates of the monomer aroma components were higher when the capsule was planted at 6 mm to the mouth end as compared to those at 18 mm, or when the filter was unventilated. With the increase of the mol. weight of flavor compound, the transfer rate ratios between the capsule planted at 6 mm and that at 18 mm of the same component in alc., ketone and ester homologues presented different variation trends. The transfer rate ratios when the filter was unventilated to that of ventilated of the same component in these homologues deceased. 2) The puff-by-puff releases and the puff-by-puff releases per unit TPM of monomer aroma components were higher when the capsule was planted at 6 mm than at 18 mm. The puff-by-puff releases were higher and the puff-by-puff releases per unit TPM were lower when the filter was unventilated than ventilated. 3) The releases of those aroma components with a lower b.p., such as Et hexanoate, Et heptanoate, 2-heptanone, 2-octanone and 1-pentanol, increased significantly at the fourth and fifth puffs.

This compound(2-Ethylpyrazine)Reference of 2-Ethylpyrazine was discussed at the molecular level, the effects of temperature and reaction time on the properties of the compound were discussed, and the optimum reaction conditions were selected.

Reference:
Chiral Catalysts,
Chiral catalysts – SlideShare

Heterocyclic compounds can be divided into two categories: alicyclic heterocycles and aromatic heterocycles. Compounds whose heterocycles in the molecular skeleton cannot reflect aromaticity are called alicyclic heterocyclic compounds. Compound: 13925-00-3, is researched, Molecular C6H8N2, about Aroma dynamic characteristics during the process of variable-temperature final firing of Congou black tea by electronic nose and comprehensive two-dimensional gas chromatography coupled to time-of-flight mass spectrometry, the main research direction is congou black tea faint scent floral aroma; Comprehensive two-dimensional gas chromatography coupled to time-of-flight mass spectrometry; Congou black tea; Electronic nose; Final firing; Multivariate statistical analysis.COA of Formula: C6H8N2.

The drying technol. is crucial to the quality of Congou black tea. In this study, the aroma dynamic characteristics during the variable-temperature final firing of Congou black tea was investigated by electronic nose (e-nose) and comprehensive two-dimensional gas chromatog. coupled to time-of-flight mass spectrometry (GC x GC-TOFMS). Varying drying temperatures and time obtained distinctly different types of aroma characteristics such as faint scent, floral aroma, and sweet fragrance. GC x GC-TOFMS identified a total of 243 volatile compounds Clear discrimination among different variable-temperature final firing samples was achieved by using partial least squares discriminant anal. (R2Y = 0.95, Q2 = 0.727). Based on a dual criterion of variable importance in the projection value (VIP > 1.0) and one-way ANOVA (p < 0.05), ninety-one specific volatile biomarkers were identified, including 2,6-dimethyl-2,6-octadiene and 2,5-diethylpyrazine with VIP > 1.5. In addition, for the overall odor perception, e-nose was able to distinguish the subtle difference during the variable-temperature final firing process.

《Aroma dynamic characteristics during the process of variable-temperature final firing of Congou black tea by electronic nose and comprehensive two-dimensional gas chromatography coupled to time-of-flight mass spectrometry》 provides a strategy for the preparation of materials with excellent comprehensive properties, which is conducive to broaden the application field of this compound(2-Ethylpyrazine)COA of Formula: C6H8N2.

Reference:
Chiral Catalysts,
Chiral catalysts – SlideShare

Heterocyclic compounds can be divided into two categories: alicyclic heterocycles and aromatic heterocycles. Compounds whose heterocycles in the molecular skeleton cannot reflect aromaticity are called alicyclic heterocyclic compounds. Compound: 13925-00-3, is researched, Molecular C6H8N2, about Study of the mechanism of flavor compounds formed via taste-active peptides in bovine bone protein extract, the main research direction is bovine bone protein extract flavor compound taste active peptide.SDS of cas: 13925-00-3.

A peptide-labeled xylose reaction model was developed by reacting the taste-active peptides detected in bovine bone protein extract, including Pro-Cys, Cys-Glu, Cys-Met-Thr and Ala-Gln, with a 1:1 ratio of 13C5-labeled xylose and xylose. The similarities and differences in types and contents of aroma compounds generated by the peptides and amino acid were well explored. The study found that the activity of taste-active peptides in the Maillard reaction was lower than their corresponding amino acids, however, those that do participate in the reaction produce flavor substances. Furthermore, the obtained results from the isotope tracer technique showed that xylose played an important role in the Maillard reaction, as a basic material for the generation of pyrazines and thiols. However, certain compounds such as benzaldehyde and 4-ethylbenzaldehyde could directly form with taste-active peptides in the absence of xylose, which indicates that these peptides could produce some unique flavor substances during the thermal reaction process.

This compound(2-Ethylpyrazine)SDS of cas: 13925-00-3 was discussed at the molecular level, the effects of temperature and reaction time on the properties of the compound were discussed, and the optimum reaction conditions were selected.

Reference:
Chiral Catalysts,
Chiral catalysts – SlideShare

Recommanded Product: 2-Ethylpyrazine. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: 2-Ethylpyrazine, is researched, Molecular C6H8N2, CAS is 13925-00-3, about Combining solid dispersion-based spray drying with cyclodextrin to improve the functionality and mitigate the beany odor of pea protein isolate. Author is Cui, Leqi; Kimmel, Jennifer; Zhou, Leon; Rao, Jiajia; Chen, Bingcan.

The beany flavor of pea protein limits its application in the food industry. This study aimed at addressing this problem by combining the advantages of solid-based spray drying technique and the ability of cyclodextrins (CD) to entrap volatiles. Pea protein isolates (PPI) was extracted by alk. extraction-isoelec. precipitation, followed by co-spray drying with CD. The resulted PPI-CD showed no major structure changes. HS-SPME-GC-MS coupled to untargeted metabolomics successfully identified 23 aroma compounds that represent the different odorants among PPI-control, phys. mixed PPI-CD, and co-spray dried PPI-CD samples. Heat map anal. also showed a remarkable beany odor mitigation effect upon the addition of CD, which was further proved to be due to CD entrapping aroma compounds during spray drying. In the meantime, the functional attributes of PPI-CD were not adversely impacted by the addition of CD.

This compound(2-Ethylpyrazine)Recommanded Product: 2-Ethylpyrazine was discussed at the molecular level, the effects of temperature and reaction time on the properties of the compound were discussed, and the optimum reaction conditions were selected.

Reference:
Chiral Catalysts,
Chiral catalysts – SlideShare

Zolnierczyk, Anna K.; Szumny, Antoni published the article 《Sensory and chemical characteristic of two insect species: Tenebrio molitor and Zophobas morio larvae affected by roasting processes》. Keywords: Tenebrio molitor Zophobas morio larvae sensory roasting process; Maillard reactions; aroma profile; edible insects; pyrazine; sensory analysis.They researched the compound: 2-Ethylpyrazine( cas:13925-00-3 ).Computed Properties of C6H8N2. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:13925-00-3) here.

The volatile compounds from insects (Tenebrio molitor and Zophobas morio larvae) roasted at 160, 180, or 200°C and fed with potato starch or blue corn flour were isolated by solid-phase microextraction (SPME), and identified by gas chromatog.-mass spectrometry (GC-MS). In the tested material, 48 volatile compounds were determined Among them, eight are pyrazines, aroma compounds that are formed in food products during thermal processing due to the Maillard reaction. Eleven of the identified compounds influenced the roast, bread, fat, and burnt aromas that are characteristic for traditional baked dishes (meat, potatoes, bread). Most of them are carbonyl compounds and pyrazines. To confirm the contribution of the most important odorants identified, their odor potential activity values (OAVs) and %OAV were calculated The highest value was noted for isobuthylpyrazine, responsible for roast aroma (%OAV > 90% for samples roasted at lower temperatures), and 2,5-dimethylpyrazine, responsible for burnt aroma (%OAV > 20% for samples roasted at the highest temperature). According to the study, the type of feed did not significantly affect the results of the sensory anal. of roasted insects. The decisive influence was the roasting temperature The highest scores were achieved for Tenebrio molitor larvae heat-treated at 160°C.

This compound(2-Ethylpyrazine)Computed Properties of C6H8N2 was discussed at the molecular level, the effects of temperature and reaction time on the properties of the compound were discussed, and the optimum reaction conditions were selected.

Reference:
Chiral Catalysts,
Chiral catalysts – SlideShare

In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Comparison of acrylamide and furan concentrations, antioxidant activities, and volatile profiles in cold or hot brew coffees, published in 2020-01-31, which mentions a compound: 13925-00-3, mainly applied to cold hot brew coffee acrylamide furan antioxidant volatile compound; Acrylamide; Coffee; Cold brew; Furan; Hot brew; Volatile compounds, Recommanded Product: 2-Ethylpyrazine.

The aim of this study was to investigate the formation of furan and acrylamide and to compare antioxidant capacities and volatile compounds in cold or hot brewed coffees. Cold brews were prepared at 5°C and 20°C for 12 h. using steeping and dripping, and hot brews were prepared at 80°C and 95°C for 5 min. using the pour-over method. Furan contents of cold steeping at 5°C and hot brewed at 80°C showed the higher levels significantly (p < 0.05), which were 17.0 ± 0.5 and 10.6 ± 0.1 ng/mL, resp. However, acrylamide contents in cold steeping at 5°C and hot brew at 80°C showed lower levels, which were 4.1 ± 0.4 and 3.5 ± 0.1 ng/mL resp. Cold brews at 20°C showed the highest levels of antioxidant activities while hot brews showed similar levels with cold brews at 5°C. This study confirms that levels of different beneficial and hazardous chem. compounds could be manipulated by adjusting the coffee extraction conditions. This compound(2-Ethylpyrazine)Recommanded Product: 2-Ethylpyrazine was discussed at the molecular level, the effects of temperature and reaction time on the properties of the compound were discussed, and the optimum reaction conditions were selected.

Reference:
Chiral Catalysts,
Chiral catalysts – SlideShare

In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Vapor phase synthesis of alkylpyrazines over ZnAl mixed oxide derived from layered double hydroxides obtained by the mechanochemical method, published in 2021-08-31, which mentions a compound: 13925-00-3, mainly applied to alkylpyrazine aluminum zinc oxide layered double hydroxide, Application In Synthesis of 2-Ethylpyrazine.

This study emphasizes on using different types of reactants to obtain compounds belonging to the same class, alkylpyrazines. The mechanism of these reactions is one of cyclo-dehydrogenation on the surface of a mixed oxide catalyst, e.g. ZnAl. Different types of reactions have been performed, using diamines, hydroxyamines or a diamine and a diol. The raw materials used and the various reaction parameters like temperature, space velocity and molar ratio of the reactants present a significant influence in the conversion and selectivity values. The conversion of reactants was quasi-total while the selectivity of the yielded products varies from 95.9% to a complex mixture of products. The ZnAl catalyst is thermally stable with the catalytic sites easily regenerated.

《Vapor phase synthesis of alkylpyrazines over ZnAl mixed oxide derived from layered double hydroxides obtained by the mechanochemical method》 provides a strategy for the preparation of materials with excellent comprehensive properties, which is conducive to broaden the application field of this compound(2-Ethylpyrazine)Application In Synthesis of 2-Ethylpyrazine.

Reference:
Chiral Catalysts,
Chiral catalysts – SlideShare

Heterocyclic compounds can be divided into two categories: alicyclic heterocycles and aromatic heterocycles. Compounds whose heterocycles in the molecular skeleton cannot reflect aromaticity are called alicyclic heterocyclic compounds. Compound: 13925-00-3, is researched, Molecular C6H8N2, about Characterization of the Key Aroma Compounds in Two Differently Dried Toona sinensis (A. Juss.) Roem. by Means of the Molecular Sensory Science Concept, the main research direction is aroma compound dried Toona leaf; aroma extract dilution analysis; aroma recombination; molecular sensory science concept; odor activity value; stable isotope dilution analysis.Application of 13925-00-3.

A systematic approach for the characterization of the key aroma-active compounds in sun-dried Toona sinensis (SDTS) and vacuum-dried T. sinensis (VDTS) was performed by means of the mol. sensory science concept. A total of 64 aroma-active compounds were identified via gas chromatog.-olfactometry (GC-O) and gas chromatog.-mass spectrometry (GC-MS). Aroma extract dilution anal. (AEDA) and static headspace dilution anal. revealed 39 odorants in SDTS and 32 odorants in VDTS with flavor dilution (FD) factors from 8 to 4096, with the highest for vanillin and eugenol in both samples. Stable isotope dilution anal. (SIDA) and an internal standard method were applied to quantitate 42 odorants, revealing 35 compounds in concentrations above their resp. odor thresholds in SDTS and 29 compounds in VDTS, resp. Calculation of odor activity values (OAVs) indicated 2-isopropyl-3-methoxypyrazine, eugenol, and β-ionone with the highest OAVs in both samples. Recombination experiments of the overall aromas of SDTS and VDTS by mixing the odorants with OAVs ≥1 in their naturally occurring concentrations proved the successful identification and quantitation of the resp. key odorants.

Different reactions of this compound(2-Ethylpyrazine)Application of 13925-00-3 require different conditions, so the reaction conditions are very important.

Reference:
Chiral Catalysts,
Chiral catalysts – SlideShare

HPLC of Formula: 13925-00-3. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: 2-Ethylpyrazine, is researched, Molecular C6H8N2, CAS is 13925-00-3, about Acid activated montmorillonite for gas-phase catalytic dehydration of monoethanolamine.

The acid activated montmorillonite (Acid-Mt) was investigated for the first time as a catalyst for the gaseous-phase dehydration of monoethanolamine (MEA). A series of Acid-Mt was obtained by treating the Na-type montmorillonite (Na-Mt) at 104 °C in 3.2 mol L-1 HNO3 aqueous solution for 4-24 h followed by calcining at 450-1150 °C for 4 h, resp. The Acid-Mts were characterized by X-ray diffraction, temperature programmed desorption of NH3, temperature programmed desorption of CO2, and N2 adsorption-desorption, and were evaluated as catalysts for the gaseous-phase dehydration of MEA. With increasing the activation time or calcination temperature, both the amounts of acidic and basic sites over Acid-Mt were decreased, and more pronounced extent was observed in the case of changing the calcination temperature By correlating the catalytic results with the characterization results, the acidity of the catalyst was revealed to be the key factor in determining the MEA conversion. In contrast, a complex picture was observed in the case of the product selectivity. Generally, a higher acidity over Acid-Mt favored the intermol. dehydration and 1,2-elimination reactions of MEA, leading to a higher selectivity of piperazine (PIP) and triethylenediamine (TEDA). When the acidity of Acid-Mt was lower, the intramol. dehydration and deamination reactions were improved resulting in an increasing selectivity of ethyleneimine (EI). Importantly, the product distribution of the MEA dehydration was greatly regulated by the simply changing the acid activation parameters of Mt. Thus, Acid-Mt is a promising catalyst for selectively synthesizing different N-containing fine chems. via the MEA dehydration reaction.

Different reactions of this compound(2-Ethylpyrazine)HPLC of Formula: 13925-00-3 require different conditions, so the reaction conditions are very important.

Reference:
Chiral Catalysts,
Chiral catalysts – SlideShare