Category: 105-87-3

Bioactive compounds extracted by liquid and supercritical carbon dioxide from citrus peels was written by Romano, Raffaele;De Luca, Lucia;Aiello, Alessandra;Rossi, Danilo;Pizzolongo, Fabiana;Masi, Paolo. And the article was included in International Journal of Food Science and Technology in 2022.Category: esters-buliding-blocks This article mentions the following:

This work investigated the extraction of bioactive compounds from citrus peels, an agri-food waste. Carbon dioxide (CO2), an eco-friendly solvent, was used under liquid and supercritical conditions to perform the extractions from orange, tangerine and lemon peels. The possibility of using ethanol as a cosolvent at small percentages up to 20% was also studied. The extraction yield, total polyphenolic content, individual polyphenolic profile, antiradical activity and volatile organic compounds of the extracts were evaluated. The highest yields were obtained when 20% ethanol was used as a cosolvent in both liquid (at 20 MPa and 20°C) and supercritical (at 30 MPa and 60°C) CO2 extraction In addition, the extracts obtained with liquid CO2 + 20% ethanol showed the highest content of naringin (35.26, 44.05 and 19.86 mg g-1 in orange, tangerine and lemon peel extracts, resp.) and terpenes, in particular limonene. This type of extract also showed the highest antiradical activity (31.78-59.51μmolTE g-1) as measured by both ABTS·+ and DPPH·. These findings show that the extraction with a liquid CO2 and ethanol mixture could be a valid alternative to traditional solvent extraction using 80% less organic solvent and producing extracts with high antiradical capacity and rich in volatile organic compounds In the experiment, the researchers used many compounds, for example, (E)-3,7-Dimethylocta-2,6-dien-1-yl acetate (cas: 105-87-3Category: esters-buliding-blocks).

(E)-3,7-Dimethylocta-2,6-dien-1-yl acetate (cas: 105-87-3) belongs to esters. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. Esterification is the general name for a chemical reaction in which two reactants (typically an alcohol and an acid) form an ester as the reaction product. Esters are common in organic chemistry and biological materials.Category: esters-buliding-blocks

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Evaluation of Oxidative Stability of Cupcake Oil: Comparison of Antioxidant Properties of Dracocephalum kotschyi Essential Oil versus TBHQ was written by Hematian Sourki, Abdollah;Pasalar, Hanieh;Ghani, Askar. And the article was included in European Journal of Lipid Science and Technology in 2022.Synthetic Route of C12H20O2 This article mentions the following:

Given the phytochem. properties of Dracocephalum kotschyi, this research considers the effects of adding its essential oil to cupcakes and investigation of the its oil oxidative stability. At first D. kotschyi’s essential oil (DKEO) is identified and measured by GC/MS. The results show that the most important components of DKEO are α-pinene (25.50%), geranial (14.01%), limonene (12.39%), and neral (11.07%). Chem. analyses on pH, acidity, peroxide value, p-Anisidine value, and total oxidation value (TOTOX) show that increasing the concentration of DKEO reduces the oxidation rate and increases the oxidative stability of the cupcake’s oil during storage. Sensory evaluation shows that DKEO used concentration does not have favorable effects on some organoleptic properties of cupcakes. Despite the pos. effects of DKEO on maintaining the oxidative stability of cupcake’s oil during baking and storage, lower concentrations of it are recommended, along with combinatory usages of this essential oil with other commonly used essential oils in the confectionery industry (such as cinnamon, ginger, and cardamom essential oils), whereby consumers can be gradually accustomed to new flavors. The present study introduces the Dracocephalum kotschyi as a rich source of antioxidants. In the present study, valuable data are presented to compare the application of natural antioxidants of D. kotschyi vs. a synthetic antioxidant like tert-butylhydroquinone (TBHQ) in a popular product. In addition, D. kotschyi is introduced as a natural antioxidant potential to the oil industry and oil-dependent food industries, which can not only reduce the nutritional risks of synthetic antioxidants, but also increase the marketability of oil-rich food products. In the experiment, the researchers used many compounds, for example, (E)-3,7-Dimethylocta-2,6-dien-1-yl acetate (cas: 105-87-3Synthetic Route of C12H20O2).

(E)-3,7-Dimethylocta-2,6-dien-1-yl acetate (cas: 105-87-3) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits. Esters contain a carbonyl center, which gives rise to 120° C–C–O and O–C–O angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C–O–C bonds has a low barrier. Their flexibility and low polarity is manifested in their physical properties; they tend to be less rigid (lower melting point) and more volatile (lower boiling point) than the corresponding amides. Synthetic Route of C12H20O2

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Molecular basis of (E)-β-farnesene-mediated aphid location in the predator Eupeodes corollae was written by Wang, Bing;Dong, Wanying;Li, Huimin;D’Onofrio, Chiara;Bai, Penghua;Chen, Ruipeng;Yang, Lulu;Wu, Jinan;Wang, Xiaoqing;Wang, Bo;Ai, Dong;Knoll, Wolfgang;Pelosi, Paolo;Wang, Guirong. And the article was included in Current Biology in 2022.Quality Control of (E)-3,7-Dimethylocta-2,6-dien-1-yl acetate This article mentions the following:

(E)-β-farnesene (EBF) is an important chem. cue mediating interactions between plants, aphids, and natural enemies. This chem. has two origins, being secreted by aphid as an alarm pheromone and also produced by the attacked plants as a semiochem. attracting natural enemies. Despite the important role of this volatile chem., little is known on the mol. mechanisms mediating the attraction of natural enemies to EBF. Here, we first verified that the larvae and adults of aphid predator hoverfly Eupeodes corollae detect and are attracted to EBF. Then, we found a neuron housed in type III basiconic sensilla of adult antenna responding to EBF. We further verified that in both adults and larvae odorant receptor EcorOR3 and odorant-binding protein EcorOBP15 mediate detection of EBF and structurally similar volatiles. Finally, we provide evidence that larvae of E. corollae may use aphid-derived EBF for prey location in the short-range, whereas adults could detect plant-derived EBF to find attacked plants from longer distances. Thus, while dissecting the mol. basis for attraction to EBF produced by two different sources, our results may find potential applications in integrated aphid management approaches. In the experiment, the researchers used many compounds, for example, (E)-3,7-Dimethylocta-2,6-dien-1-yl acetate (cas: 105-87-3Quality Control of (E)-3,7-Dimethylocta-2,6-dien-1-yl acetate).

(E)-3,7-Dimethylocta-2,6-dien-1-yl acetate (cas: 105-87-3) belongs to esters. Esters are also usually derived from carboxylic acids. It may also be obtained by reaction of acid anhydride or acid halides with alcohols or by the reaction of salts of carboxylic acids with alkyl halides. Esterification is the general name for a chemical reaction in which two reactants (typically an alcohol and an acid) form an ester as the reaction product. Esters are common in organic chemistry and biological materials.Quality Control of (E)-3,7-Dimethylocta-2,6-dien-1-yl acetate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Assessment of fresh Alpinia galanga (A. galanga) drying techniques for the chemical composition of essential oil and its antioxidant and biological activity was written by Ge, Xiangzhen;Liang, Qiuhong;Long, Yao;Shen, Huishan;Zhang, Qian;Sun, Zhuangzhuang;Li, Wenhao. And the article was included in Food Chemistry in 2022.Category: esters-buliding-blocks This article mentions the following:

This study evaluated drying characteristics, structure and essential oil chem. composition, and biol. activity of A. galanga by hot air drying (HAD), vacuum drying (VD), freeze drying (FD). The results showed that HAD had the shortest drying time while FD could better maintain the microstructure and showed a higher essential oil yield than HAD and VD. In addition, E-nose, HS-GC-IMS and HS-SPME-GC-MS could effectively distinguish the essential oil chem. composition of the four samples because different drying methods induced the changes in the profile and content of the compounds HS-SPME-GC-MS detected 43 compounds, of which alcs., alkenes, and esters were the main substances in fresh and dry samples. In comparison, HS-SPME-GC-IMS detected 80 compounds, including alcs., aldehydes, ketones, esters, alkenes. Overall, the FD samples showed more outstanding advantages by evaluating antioxidant properties and antibacterial activities. FD was more suitable for A. galanga drying as it maintains appearance and biol. activity. In the experiment, the researchers used many compounds, for example, (E)-3,7-Dimethylocta-2,6-dien-1-yl acetate (cas: 105-87-3Category: esters-buliding-blocks).

(E)-3,7-Dimethylocta-2,6-dien-1-yl acetate (cas: 105-87-3) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits, including apples, durians, pears, bananas, pineapples, and strawberries. Because of their lack of hydrogen-bond-donating ability, esters do not self-associate. Consequently, esters are more volatile than carboxylic acids of similar molecular weight.Category: esters-buliding-blocks

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Lemon balm (Melissa officinalis L.) essential oil and citronellal modulate anxiety-related symptoms – In vitro and in vivo studies was written by Stojanovic, Nikola M.;Mladenovic, Marko Z.;Maslovaric, Aleksandra;Stojiljkovic, Nenad I.;Randjelovic, Pavle J.;Radulovic, Niko S.. And the article was included in Journal of Ethnopharmacology in 2022.Reference of 105-87-3 This article mentions the following:

Besides psyche-related symptoms, patients with anxiety disorders can have a large number of somatic symptoms as well. Although the treatment of these disorders is mainly focused on resolving their mental component, one cannot neglect the need for the treatment of accompanying somatic symptoms. Melissa officinalis L. (lemon balm), in various formulations, has been extensively used as an ethnomedicinal remedy for the treatment of different psyche-related symptoms, and its use is considered relatively safe. Aim of the study: In the present study, the activity of M. officinalis (MO) essential oil was evaluated in several in vitro and in vivo models mimicking or involving anxiety-related somatic symptoms. To address the effect of MO essential oil on the gastrointestinal and heart-related symptoms accompanying anxiety disorders, in vitro models were utilized that follow the function of the isolated mouse ileum and atria tissues, resp., after exposure to MO essential oil. Effects of MO essential oil on BALB/c mice motor activity was estimated using the open field, rota-rod, and horizontal wire tests. Addnl., the essential oil was assayed for its potential in inhibiting acetylcholinesterase activity. The performance of mice treated with 25 mg/kg of the oil showed a statistically significant decrease in the motor impairment arising from acute anxiety (open field test), while there was a prolonged latency and a reduction of the frequency of falling from a rotating rod and/or a horizontal wire (signs of muscle weakness/spasms). Concentrations of the essential oil higher than 1 μg/mL were found to inhibit both spontaneous and induced ileum contractions. Moreover, the essential oil and citronellal were found to decrease isolated mouse atria contraction frequency, as well as contraction force. However, the oil was found to be a very weak acetylcholinesterase inhibitor. The modulation of anxiety-related symptoms by the oil was found not to be mediated through the inhibition of the acetylcholinesterase, nonetheless, the mechanistic studies involving the ileum and cardiac tissues, revealed that the activity of MO and citronellal might be related to the modification of either voltage-gated Ca2+ channels or muscarinic receptors. Mice locomotion, balance, and muscle strength were not impacted by the essential oil; however, its main constituent, citronellal, was found to exert a certain degree of muscle function inhibition. All these results suggest that the activity of MO essential oil arises from synergistic and/or antagonistic interactions of its constituents, and is not completely dependent on the oil main constituent. In the experiment, the researchers used many compounds, for example, (E)-3,7-Dimethylocta-2,6-dien-1-yl acetate (cas: 105-87-3Reference of 105-87-3).

(E)-3,7-Dimethylocta-2,6-dien-1-yl acetate (cas: 105-87-3) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits, including apples, durians, pears, bananas, pineapples, and strawberries. Esters contain a carbonyl center, which gives rise to 120° C–C–O and O–C–O angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C–O–C bonds has a low barrier. Their flexibility and low polarity is manifested in their physical properties; they tend to be less rigid (lower melting point) and more volatile (lower boiling point) than the corresponding amides. Reference of 105-87-3

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

A calibrant-free drift compensation method for gas sensor arrays was written by Maho, Pierre;Herrier, Cyril;Livache, Thierry;Comon, Pierre;Barthelme, Simon. And the article was included in Chemometrics and Intelligent Laboratory Systems in 2022.Related Products of 105-87-3 This article mentions the following:

Gas sensors lack repeatability over time. They are affected by drift, the result of changes at the sensor level and in the environment. A solution is to design software methods that compensate for the drift. Existing methods are often based on calibration samples acquired at the start of each new measurement session. However, finding a good reference compound is a difficult task and generating calibration samples is time-consuming. We propose a model-based correction method which does not require any calibration sample over time, operating ‘blindly’. In this study, we focus on the drift affecting electronic noses. To this end, we built a real data set acquired over 9 mo in real-life conditions. By using the proposed method, we show that the drift is partly compensated, thus increasing the reliability of the electronic nose. Besides, we also show that the algorithm can easily adapt if the target compounds are not all sampled during every session. In the experiment, the researchers used many compounds, for example, (E)-3,7-Dimethylocta-2,6-dien-1-yl acetate (cas: 105-87-3Related Products of 105-87-3).

(E)-3,7-Dimethylocta-2,6-dien-1-yl acetate (cas: 105-87-3) belongs to esters. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. Liquid esters of low volatility serve as softening agents for resins and plastics. Esters also include many industrially important polymers. Polymethyl methacrylate is a glass substitute sold under the names Lucite and Plexiglas; polyethylene terephthalate is used as a film (Mylar) and as textile fibres sold as Terylene, Fortrel, and Dacron.Related Products of 105-87-3

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics