Month: December 2022

Kim, Dongjoo published the artcileHealth-beneficial aroma and taste compounds in a newly developed kombucha using a Huanglongbing-tolerant mandarin hybrid, HPLC of Formula: 106-32-1, the main research area is health aroma taste kombucha Huanglongbing mandarin; HLB; Mandarin hybrid; aroma; healthy beverage; kombucha; taste.

Huanglongbing (HLB) is a destructive citrus greening disease; no com. applicable measures exist. ‘LB8-9’ Sugar Belle (SB), originally developed for the fresh market, is the most HLB-tolerant cultivar among com. available varieties. Due to the limited capacity of the fresh fruit market, there is a need to increase the demand for SB juice. Kombucha is a fermented tea beverage with black tea and sugar, and is considered a healthy drink with an increasing market. Therefore, we aim to study the potential of using SB juice in kombucha production Regular (black tea with no citrus juice added), Hamlin (black tea with Hamlin juice added), and SB kombucha (black tea with SB juice added) were prepared and analyzed to observe the composition of aroma and taste compounds in the kombuchas. Aroma and taste compounds in the kombuchas were analyzed using gas chromatog.-mass spectrometry/olfactometry and liquid chromatog.-triple quadrupole mass spectrometry, resp. For aroma compounds, SB kombucha was characterized by high concentrations of terpenes and their derivatives, which have mandarinlike aroma characteristics and health benefits such as antidiabetic and antioxidant effects. For taste compounds, SB kombucha contained higher amount of fructose and organic acids, which have the potential to increase the intensity of sweetness and sourness, and flavonoids. This would support the potential benefits of using SB to make kombucha. This study provides valuable information about the aroma and taste compounds in SB kombucha and its potential health benefits, compared with regular and Hamlin kombucha.

Journal of Food Science published new progress about Aliphatic alcohols Role: FFD (Food or Feed Use), BIOL (Biological Study), USES (Uses). 106-32-1 belongs to class esters-buliding-blocks, name is Ethyl octanoate, and the molecular formula is C10H20O2, HPLC of Formula: 106-32-1.

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

Guerrera, Gina published the artcileThe potential interference of body products and substrates to the identification of ignitable liquid residues on worn clothing, Formula: C9H10O2, the main research area is forensic analysis worn clothing ignitable liquid residue GC MS.

The question of whether deposits on clothing as well as their chem. composition are being mistaken for ignitable fluids is a concern for forensic analysts. Body products and oil secretions can have similar chem. profiles to ignitable liquid residues (ILRs) as a result of comparable chem. compounds that may be found in both sources. This study investigated whether substrates of unworn and worn clothing, with endogenous body secretions and body products could interfere with ILR anal. Sample extraction was completed by passive headspace concentration with activated charcoal strips (ACS) and desorption with carbon disulfide followed by anal. with gas chromatog.-mass spectrometry (GC-MS). Results showed that some body products produce similar patterns to heavy petroleum distillates and most clothing contained components that are commonly found in ignitable liquids It was concluded that the clothing, body products and compounds released by the body all contribute to the GC-MS profile of worn clothing. These components can mimic or mask the presence of ILRs, however educated and experienced analysts would likely be able to differentiate these substrate patterns from ILRs.

Forensic Chemistry published new progress about Activated charcoal Role: ARU (Analytical Role, Unclassified), ANST (Analytical Study). 140-11-4 belongs to class esters-buliding-blocks, name is Benzyl acetate, and the molecular formula is C9H10O2, Formula: C9H10O2.

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

Parish-Virtue, Katie published the artcileSynthesis and Use of Ethyl 6-Acetyloxyhexanoate as an Internal Standard: An Interdisciplinary Experiment for an Undergraduate Chemistry Laboratory, Quality Control of 106-32-1, the main research area is EAH synthesis aroma compound laboratory.

The combination of organic synthesis and anal. chem. into a related laboratory experiment is an excellent demonstration of the utility of making a compound to then be used further. Herein we describe an undergraduate laboratory experiment that involves the straightforward synthesis of an internal standard, Et 6-acetyloxyhexanoate, for the quantification of various aroma compounds in juice through GC-FID anal. In addition to the organic synthetic procedures of undertaking a reaction under reflux, separation, and extraction protocols followed by determining the purity of a synthesized compound, this experiment also facilitates the teaching of making standard solutions, using solid phase extraction, preparing samples, and performing and interpreting the results of GC-FID anal.

Journal of Chemical Education published new progress about Aromatic compounds Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 106-32-1 belongs to class esters-buliding-blocks, name is Ethyl octanoate, and the molecular formula is C10H20O2, Quality Control of 106-32-1.

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

Javed, Hafiz Umer published the artcileDrying treatments change the composition of aromatic compounds from fresh to dried centennial seedless grapes, Recommanded Product: Ethyl nonanoate, the main research area is hexenal ethyl alc beta damascenone seedless grape drying; SPME-GS/MS (solid-phase microextraction condition-gas chromatography/mass spectrometry) 5; aromatic profile; centennial seedless; free-form volatile compounds; glycosidically bound-form volatile compound.

Raisin aroma is a vital sensory characteristic that determines consumers’ acceptance. Volatile organic compounds (VOCs) in fresh grapes, air-dried (AD), pre-treated air-dried (PAD), sun-dried (SD), and pre-treated sun-dried (PSD) raisins were analyzed, with 99 and 77 free- and bound-form compounds identified in centennial seedless grapes, resp. The hexenal, (E)-2- hexenal, 1-hexanol, Et alc., and Et acetate in free-form while benzyl alc., β-damascenone, gerenic acid in bound-form were the leading compounds Overall, the concentration of aldehydes, alcs., esters, acids, terpenoids, ketones, benzene, and phenols were abundant in fresh grapes but pyrazine and furan were identified in raisin. Out of 99 VOCs, 30 compounds had an odor active value above 1. The intensity of green, floral, and fruity aromas were quite higher in fresh grapes followed by AD-raisins, PAD-raisins, SD-raisins, and PSD-raisins. The intense roasted aroma was found in SD-raisins due to 2,6-diethylpyrazine and 3-ethyl-2,5-dimethylpyrazine. Among raisins, the concentration of unsaturated fatty acid oxidized and Maillard reaction volatiles were higher in SD-raisins and mainly contributed green, fruity and floral, and roasted aromas, resp.

Foods published new progress about Aromatic compounds Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 123-29-5 belongs to class esters-buliding-blocks, name is Ethyl nonanoate, and the molecular formula is C11H22O2, Recommanded Product: Ethyl nonanoate.

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

Tondini, Federico published the artcileLinking gene expression and oenological traits: Comparison between Torulaspora delbrueckii and Saccharomyces cerevisiae strains, Application of Ethyl octanoate, the main research area is Torulaspora Saccharomyces acetic acid alc fermentation esterase; BAP2; Indigenous yeast; Transcripts profile; Wine isolates.

Wine fermentations typically involve the yeast Saccharomyces cerevisiae. However, many other yeast species participate to the fermentation process, some with interesting oenol. traits. In this study the species Torulaspora delbrueckii, used occasionally in mixed or sequential fermentation with S. cerevisiae to improve wine sensory profile, was investigated to understand the physiol. differences between the two. Next generation sequencing was used to characterize the transcriptome of T. delbrueckii and highlight the different genomic response of these yeasts during growth under wine-like conditions. Of particular interest were the basic differences in the glucose fermentation pathway and the formation of aromatic and flavor compounds such as glycerol, esters and acetic acid. Paralog genes were missing in glycolysis and glycerol biosynthesis in T. delbrueckii. Results indicate the tendency of T. delbrueckii to produce less acetic acid relied on a higher expression of alc. fermentation related genes, whereas acetate esters were influenced by the absence of esterases, ATF1-2. Addnl., in the Δbap2 S. cerevisiae strain, the final concentration of short branched chain Et esters (SBCEEs) was related to branched chain amino acid (BCAA) uptake. In conclusion, different adaptation strategies are apparent for T. delbrueckii and S. cerevisiae yeasts, an understanding of which will allow winemakers to make better use of such microbial tools to achieve a desired wine sensory outcome.

International Journal of Food Microbiology published new progress about Aromatic compounds Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 106-32-1 belongs to class esters-buliding-blocks, name is Ethyl octanoate, and the molecular formula is C10H20O2, Application of Ethyl octanoate.

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

Bononi, Monica published the artcileZeolite reduces losses and minimizes fractionation of various flavor compounds during EA-IRMS analysis, Application of Ethyl octanoate, the main research area is aromatic volatility zeolite fractionation EAIRMS analysis; EA-IRMS; Flavor compounds; Zeolite; δ(13)C.

Among the methods for confirming the natural origin of flavor compounds, δ13C measurements using IRMS technique are becoming increasingly important. EA-IRMS measures can suffer from errors caused by the volatility of the analyzed compounds and the consequent isotope fractionation. This work suggests a method involving the adsorption of volatile mols. in zeolite before the EA-IRMS anal., minimizing the possible error due to the volatility of the structures analyzed. The stabilizing effect on any fractionation was proven during the anal. of various mols. which cover a wide range of volatility. The work demonstrates that, by operating with the advised method, the repeatability of EA-IRMS data is very high not only for samples prepared before anal., but also for samples prepared in a time span of up to 6 h. The proposed method facilitates serial preparation and prevents erroneous results due to the natural volatility of the mols. under evaluation.

Food Chemistry published new progress about Aromatic compounds Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 106-32-1 belongs to class esters-buliding-blocks, name is Ethyl octanoate, and the molecular formula is C10H20O2, Application of Ethyl octanoate.

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

Hao, Jing published the artcileTea plant roots respond to aluminum-induced mineral nutrient imbalances by transcriptional regulation of multiple cation and anion transporters, SDS of cas: 2044-85-1, the main research area is aluminum mineral nutrient cation anion transporter tea plant root; Aluminum tolerance; Ion imbalance; Ionome; Metal transporter; Transcriptome.

Tea is one of the most popular non-alc. beverages in the world for its flavors and numerous health benefits. The tea tree (Camellia sinensis L.) is a well-known aluminum (Al) hyperaccumulator. However, it is not fully understood how tea plants have adapted to tolerate high concentrations of Al, which causes an imbalance of mineral nutrition in the roots. Here, we combined ionomic and transcriptomic profiling alongside biochem. characterization, to probe the changes of metal nutrients and Al responsive genes in tea roots grown under increasing concentrations of Al. It was found that a low level of Al (~0.4 mM) maintains proper nutrient balance, whereas a higher Al concentration (2.5 mM) compromised tea plants by altering micro- and macro-nutrient accumulation into roots, including a decrease in calcium (Ca), manganese (Mn), and magnesium (Mg) and an increase in iron (Fe), which corresponded with oxidative stress, cellular damage, and retarded root growth. Transcriptome anal. revealed more than 1000 transporter genes that were significantly changed in expression upon Al exposure compared to control (no Al) treatments. These included transporters related to Ca and Fe uptake and translocation, while genes required for N, P, and S nutrition in roots did not significantly alter. Transporters related to organic acid secretion, together with other putative Al-tolerance genes also significantly changed in response to Al. Two of these transporters, CsALMT1 and CsALS8, were functionally tested by yeast heterologous expression and confirmed to provide Al tolerance. This study shows that tea plant roots respond to high Al-induced mineral nutrient imbalances by transcriptional regulation of both cation and anion transporters, and therefore provides new insights into Al tolerance mechanism of tea plants. The altered transporter gene expression profiles partly explain the imbalanced metal ion accumulation that occurred in the Al-stressed roots, while increases to organic acid and Al tolerance gene expression partly explains the ability of tea plants to be able to grow in high Al containing soils. The improved transcriptomic understanding of Al exposure gained here has highlighted potential gene targets for breeding or genetic engineering approaches to develop safer tea products.

BMC Plant Biology published new progress about Anion transporters Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 2044-85-1 belongs to class esters-buliding-blocks, name is 2′,7′-Dichloro-3-oxo-3H-spiro[isobenzofuran-1,9′-xanthene]-3′,6′-diyl diacetate, and the molecular formula is C24H14Cl2O7, SDS of cas: 2044-85-1.

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

Mandal, Manisha published the artcileBioinformatic approaches for identification of potential repurposable drugs in COVID-19, Quality Control of 55981-09-4, the main research area is drug reporposing antiviral MYC ABCG rapamycin gene SARSCoV2 coronavirus.

Repurposing existing drugs approved for other conditions is crucial to identifying specific therapeutics against SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2) causing COVID-19 (coronavirus disease 2019) pandemic. Towards this attempt, it is important to understand how this virus hijacks the host system during the course of infection and determine potential virus- and host-targeted inhibitors. This study elucidates the underlying virus-host interaction based on differentially expressed gene profiling, functional enrichment and pathway anal., protein-protein and protein-drug interactions utilizing the information on transcriptional response to SARS-CoV-2 infection from GSE147507 dataset containing COVID-19 case relative to healthy control and infected cell culture compared to uninfected one. Low IFN signaling, chemokines level elevation, and proinflammatory cytokines release were observed markedly. We identified MYC-rapamycin and ABCG2-rapamycin interactions, and unique gene signatures in case (regulation of protein modification and MAPK signaling) as well as in cell (metabolic dysregulation and interferon signaling) different from known COVID-19 genes. Among a plethora of repurposable drugs those appearing here with unique gene signatures might be helpful in COVID-19.

Journal of Drug Delivery and Therapeutics published new progress about Animal gene, c-myc Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 55981-09-4 belongs to class esters-buliding-blocks, name is 2-((5-Nitrothiazol-2-yl)carbamoyl)phenyl acetate, and the molecular formula is C12H9N3O5S, Quality Control of 55981-09-4.

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

Hemmati-Dinarvand, Mohsen published the artcileNitazoxanide and Cancer Drug Resistance: Targeting Wnt/β-catenin Signaling Pathway, Recommanded Product: 2-((5-Nitrothiazol-2-yl)carbamoyl)phenyl acetate, the main research area is cancer nitazoxanide oxaliplatin drug resistance Wnt beta catenin chemotherapy; Colorectal cancer; Multidrug resistance; Nitazoxanid; Oxaliplatin; Wnt/β-catenin.

One of the most important complications that lead to unsuccessful treatment of cancer is resistance against chemotherapy agents, so called multidrug resistance (MDR). Thus, identification of the novel medications with low side effects and high efficacy to reverse MDR is highly required. Accordingly, the current study was performed to investigate the mol. mechanism of MDR in LS174T and LS174T/Oxaliplatin (OXP) cell lines during treatment with Nitazoxanide (NTZ) in combination with OXP. In the present in vitro study, we evaluated the effects of NTZ on the cytotoxicity of OXP using Thiazolyl Blue Tetrazolium Blue (MTT) assay in LS174T and LS174T/OXP cell lines when treated with OXP and NTZ, alone or in combination, for 24 and 48 h incubation. Then, we assessed the changes in the expression level of CTNNB1, ABCB1, c-Myc, and cyclin D1 genes in different treated groups. Exposure of LS174T/OXP cells to NTZ led to the elevation of cell sensitivity to OXP and induced caspase-3/7 activity, which results in apoptosis. Furthermore, NTZ downregulated Wnt/β-catenin signaling pathway through significant decrease of CTNNB1, c-Myc, ABCB1, and cyclin D1 genes and resulted in drug resistance reversal and inhibition of cell proliferation. These results indicate that Wnt/β-catenin pathway is important in developing cancer and MDR. In this regard, NTZ could reverse MDR in colorectal cancer (CRC) cells by downregulation of Wnt/β-catenin signaling pathway, suggesting that NTZ should be more considered in future studies as a potent adjuvant in CRC chemotherapy.

Archives of Medical Research published new progress about Animal gene, c-myc Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 55981-09-4 belongs to class esters-buliding-blocks, name is 2-((5-Nitrothiazol-2-yl)carbamoyl)phenyl acetate, and the molecular formula is C12H9N3O5S, Recommanded Product: 2-((5-Nitrothiazol-2-yl)carbamoyl)phenyl acetate.

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

Yu, Junhui published the artcileSynergistic tumor inhibition of colon cancer cells by nitazoxanide and obeticholic acid, a farnesoid X receptor ligand, SDS of cas: 55981-09-4, the main research area is nitazoxanide obeticholic acid synergistic tumor colon cancer FXR ligand.

The tumor-suppressive role of Farnesoid X receptor (FXR) in colorectal tumorigenesis supports restoring FXR expression as a novel therapeutic strategy. However, the complicated signaling network and tumor heterogeneity hinder the effectiveness of FXR agonists in the clin. setting. These difficulties highlight the importance of identifying drug combinations with potency and specificity to enhance the antitumor effects of FXR agonists. In this study, we found that the β-catenin level affected the antitumor effects of the FXR agonist OCA on colon cancer cells. Mechanistic studies identified a novel FXR/β-catenin complex in colon cancer cells. Furthermore, the depletion of β-catenin expedited FXR nuclear localization and enhanced its occupancy of the SHP promoter and thereby sensitized colon cancer cells to OCA. Furthermore, we utilized a drug combination study and identified that the antiparasitic drug nitazoxanide (NTZ) abrogated β-catenin expression and acted synergistically with OCA in colon cancer cells. The combination of OCA plus NTZ exerts synergistic tumor inhibition in CRC both in vitro and in vivo by cooperatively upregulating SHP expression. In conclusion, our study offers useful evidence for the clin. use of FXR agonists combined with β-catenin inhibitors in combating CRC.

Cancer Gene Therapy published new progress about Animal gene, c-myc Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 55981-09-4 belongs to class esters-buliding-blocks, name is 2-((5-Nitrothiazol-2-yl)carbamoyl)phenyl acetate, and the molecular formula is C12H9N3O5S, SDS of cas: 55981-09-4.

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