Month: December 2022

Pando Bedrinana, R. published the artcileCharacteristics of ice juices and ciders made by cryo-extraction with different cider apple varieties and yeast strains, Quality Control of 111-11-5, the main research area is ice juice cider cryo extraction apple yeast; 2-Phenylethanol (PubChem CID: 6054); Ethyl decanoate (PubChem CID: 8048); Ethyl octanoate (PubChem CID: 7799); Fructose (PubChem CID: 5984); Glycerol (PubChem CID: 753); HS-SBSE-GC-MS; Ice cider; Isoamyl acetate (PubChem CID: 31276); Malic acid (PubChem CID: 525); Malus domestica; Methanol (PubChem CID: 887); Saccharomyces bayanus; Sensory analysis; Shikimic acid (PubChem CID: 8742); Sorbitol (PubChem CID: 5780).

Two sets of nine ciders were made by cryo-extraction for two consecutive harvests combining three types of ice cider apple juices (mono-varietal, bi-varietal and multi-varietal) and three autochthonous Saccharomyces bayanus yeast strains. The type of juice significantly influenced the pH values and the contents of sorbitol and shikimic acid in the ice juices. The strains used as starters did develop the fermentation producing ciders with alc. degrees between 8.75 and 11.52 (% volume/volume) and volatile acidities lower than 0.55 g acetic acid/L. Regarding the ice ciders, the apple mixture significantly influenced the levels of methanol (higher in mono-varietal ciders), 2-phenylethanol, and some minor acetate esters (higher in the bi-varietal ciders). The last ciders were also more floral, buttery, acidic and bitter than those made from mono- and multi-varietal juices. In the first harvest, the ciders obtained from the bi-varietal apple mixture scored lower for overall sensory quality.

Food Chemistry published new progress about Apple juice. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Quality Control of 111-11-5.

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

Pando Bedrinana, R. published the artcileCharacteristics of ice juices and ciders made by cryo-extraction with different cider apple varieties and yeast strains, COA of Formula: C11H22O2, the main research area is ice juice cider cryo extraction apple yeast; 2-Phenylethanol (PubChem CID: 6054); Ethyl decanoate (PubChem CID: 8048); Ethyl octanoate (PubChem CID: 7799); Fructose (PubChem CID: 5984); Glycerol (PubChem CID: 753); HS-SBSE-GC-MS; Ice cider; Isoamyl acetate (PubChem CID: 31276); Malic acid (PubChem CID: 525); Malus domestica; Methanol (PubChem CID: 887); Saccharomyces bayanus; Sensory analysis; Shikimic acid (PubChem CID: 8742); Sorbitol (PubChem CID: 5780).

Two sets of nine ciders were made by cryo-extraction for two consecutive harvests combining three types of ice cider apple juices (mono-varietal, bi-varietal and multi-varietal) and three autochthonous Saccharomyces bayanus yeast strains. The type of juice significantly influenced the pH values and the contents of sorbitol and shikimic acid in the ice juices. The strains used as starters did develop the fermentation producing ciders with alc. degrees between 8.75 and 11.52 (% volume/volume) and volatile acidities lower than 0.55 g acetic acid/L. Regarding the ice ciders, the apple mixture significantly influenced the levels of methanol (higher in mono-varietal ciders), 2-phenylethanol, and some minor acetate esters (higher in the bi-varietal ciders). The last ciders were also more floral, buttery, acidic and bitter than those made from mono- and multi-varietal juices. In the first harvest, the ciders obtained from the bi-varietal apple mixture scored lower for overall sensory quality.

Food Chemistry published new progress about Apple juice. 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, COA of Formula: C11H22O2.

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

Gunaratne, Anoja W. published the artcileCombinations of antibiotics and vonoprazan for the treatment of Helicobacter pylori infections-Exploratory study, Computed Properties of 55981-09-4, the main research area is Helicobacter infection vonoprazan amoxicillin rifabutin levofloxacin drug safety; Helicobacter pylori ; antibiotics; potassium-competitive acid blockers; proton pump inhibitors; urea breath test.

Vonoprazan fumarate is a novel potassium-competitive acid blocker more effective in suppressing acid production than proton pump inhibitors (PPIs) and when combined with antibiotics has been used to eradicate Helicobacter pylori (H. pylori) infection. However, it has not yet been examined in an Australian setting. This study aimed to report on the efficacy and safety of vonoprazan-containing antibiotic combination therapies in the eradication of H. pylori. A single-center, exploratory, clin. review of patients 18 years or over, pos. for H. pylori on Urea Breath Test (UBT), and/or histopathol. who underwent a 10-day treatment of combination antibiotics plus vonoprazan between Jan. 2017 and Sept. 2019 was conducted. Eleven different combinations of antibiotics that included 2-5 different antibiotics predominantly amoxicillin, rifabutin, levofloxacin, furazolidone, nitazoxanide, and tetracycline were included. The eradication success was based on neg. UBT results and/or histopathol. results after the treatment. Descriptive statistics were summarized. One hundred and fifty-three patients (Female n = 74, 48%) with a pos. for H. pylori were treated with vonoprazan-containing antibiotic combination therapy during the study period. Of the 153 patients, 48 (31%) had previously failed a PPI-based H. pylori treatment. Follow-up was available for 66/153 (43%) patients. In those who completed follow-up, overall eradication was achieved in 97% (64/66) of patients. In the subgroup of patients treated for the first time, eradication was achieved in 100% (44/44). In those who had failed prior, non-vonoprazan-containing treatment, eradication was achieved in 91% (20/22) of patients. Vonoprazan-containing antibiotic therapy is an effective H. pylori eradication treatment. It is capable of achieving 100% efficacy in patients treated for the first time and even 91% efficacy in patients with previous eradication failure. Subsequent studies utilizing a factorial design will be needed to optimize each regimen as most regimens contained more than two antibiotics.

Helicobacter published new progress about Antibiotics. 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, Computed Properties of 55981-09-4.

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

Maricuto, Andrea L. published the artcileAmoebic liver abscess in a COVID-19 patient: a case report, Related Products of esters-buliding-blocks, the main research area is amoebic liver abscess COVID19; Amoebic liver abscess; COVID-19; Case report; Entamoeba histolytica; SARS-CoV-2; Venezuela.

Amoebiasis is a parasitic disease caused by Entamoeba histolytica, which affects people living in low- and middle-income countries and has intestinal and extraintestinal manifestations. To date, knowledge on coronavirus disease 2019 (COVID-19) coinfection with enteric parasites is limited, and E. histolytica coinfection has not been previously described. Here we present the case of a patient with COVID-19 who, during hospitalisation, presented a clin. picture consistent with an amoebic liver abscess (ALA). Case presentation: A 54-yr-old man, admitted as a suspected case of COVID-19, presented to our hospital with dyspnoea, malaise, fever and hypoxemia. A nasopharyngeal swab was pos. for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) by reverse-transcription polymerase chain reaction. After 7 days, he developed diarrhoea, choluria and dysentery. An abdominal ultrasound showed a lesion compatible with a liver abscess; stool examination revealed E. histolytica trophozoites, and addnl. serol. for E. histolytica was pos. After 12 days of treatment with metronidazole, ceftazidime and nitazoxanide, the patient reported acute abdominal pain, and an ultrasound examination revealed free liquid in the abdominal cavity. An emergency exploratory laparotomy was performed, finding 3000 mL of a thick fluid described as “”anchovy paste””. Computed tomog. scan revealed a second abscess. He ended up receiving 21 days of antibiotic treatment and was discharged with satisfactory improvement. Conclusion: Here we present, to the best of our knowledge, the first report of ALA and COVID-19 co-presenting. Based on their pathophysiol. similarities, coinfection with SARS-CoV-2 and E. histolytica could change the patient’s clin. course; however, larger studies are needed to fully understand the interaction between these pathogens.

BMC Infectious Diseases published new progress about Antibiotics. 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, Related Products of esters-buliding-blocks.

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

Baunwall, Simon Mark Dahl published the artcileDanish national guideline for the treatment of Clostridioides difficile infection and use of faecal microbiota transplantation (FMT), Quality Control of 55981-09-4, the main research area is review antibiotics Clostridioides difficile fecal microbiota transplantation; Clostridioides difficile; fecal microbiota transplantation.

This Danish national guideline describes the treatment of adult patients with Clostridioides (formerly Clostridium) difficile (CD) infection and the use of fecal microbiota transplantation (FMT). It suggests min. standard for implementing an FMT service. Four scientific societies appointed members for a working group which conducted a systematic literature review and agreed on the text and recommendations. All clin. recommendations were evalluated for evidence level and grade of recommendation. In CD infection, the use of marketed and exptl. antibiotics as well as microbiota-based therapies including FMT are described. An algorithm for evaluating treatment effect is suggested. The organization of FMT, donor recruitment and screening, laboratory preparation, clin. application and follow-up are described. Updated evidence for the treatment of CD infection and the use of FMT is provided.

Scandinavian Journal of Gastroenterology published new progress about Antibiotics. 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

Dassanayake, Thiloka M. published the artcileAn aluminum lining to the dark cloud of silver resistance: harnessing the power of potent antimicrobial activity of γ-alumina nanoparticles, Formula: C24H14Cl2O7, the main research area is polyethylene glycol coated alumina nanoparticle antimicrobial Pseudomonas Staphylococcus.

Although a biol. nonessential element in living organisms, aluminum is notably nontoxic to eukaryotic cells and has a venerable history of medicinal use. We demonstrate that polyethylene glycol-coated γ-alumina nanoparticles (Al2O3-NPs) with an average size of 15 nm prepared from a com. bulk γ-alumina (γ-Al2O3) via the top-down sonication technique exhibit antibacterial activity that is comparable to that of AgNPs against both the Gram-neg. drug-susceptible Pseudomonas aeruginosa (DSPA) and multidrug-resistant Pseudomonas aeruginosa (DRPA) bacteria, while the antibacterial activity of such Al2O3-NPs considerably surpasses that of AgNPs against both the Gram-pos. methicillin-susceptible Staphylococcus aureus (DSSA) and methicillin-resistant Staphylococcus aureus (MRSA) bacteria. We also demonstrate that the DSPA bacteria sequentially exposed to Al2O3-NPs for 30 days show no indication of resistance development. Furthermore, such Al2O3-NPs can completely overcome the drug resistance developed in the conventional antibiotic ciprofloxacin-resistant and AgNP-resistant mutants without developing Al resistance.

Biomaterials Science published new progress about Antibiotics. 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, Formula: C24H14Cl2O7.

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

Heidari, Mahsa published the artcileDiscrimination between vegetable oil and animal fat by a metabolomics approach using gas chromatography-mass spectrometry combined with chemometrics, Safety of Methyl docosanoate, the main research area is vegetable oil fat gas chromatog mass spectrometry chemometrics metabolomics; Adulteration; Fatty acid methyl ester; Gas chromatography–mass spectrometry; Lard; Olive oil; Principal component analysis.

Adulteration of olive oil with the other cheap oils and fats plays an important role in economics and has nutritional benefits. In this work, metabolite profiling was performed using gas chromatog.-mass spectrometry to identify and quantify animal fat (lard) adulteration in vegetable oil (olive oil). Principal component anal. could correctly identify and clustering olive oil, sunflower oil, sesame oil, lard, and adulterated samples through the changes in their fatty acid Me esters (FAMEs) profile. A targeted metabolomics method was then optimized and validated through construction of calibration curves of known FAMSs in olive oil and lard. The method was presented high linearity (R2 > 0.96) and good intra and inter day accuracy and precision (79-101 and 86-102% and 2-7 and 3-7, resp.) for determination of FAMEs. Afterwards the absolute concentration and relative percentage of FAMEs were successfully determined in 12 com. olive oils and 3 lards samples. Me myristate, Me palmitate, Me oleate, and Me stearate were selected as discriminant markers to identify and quantify lard adulteration even at a low level of lard (5%weight/weight), with errors less than 2% in the comparison of the absolute or relative concentrations of FAMEs using several statistical methods. The proposed methodol. allowed us to quantify the FAMEs simultaneously and also could predict small amount of lard in the adulterated olive oil samples.

Journal of Food Science and Technology (New Delhi, India) published new progress about Animal fats. 929-77-1 belongs to class esters-buliding-blocks, name is Methyl docosanoate, and the molecular formula is C23H46O2, Safety of Methyl docosanoate.

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

Zhang, Jinglin published the artcileCharacterization of aroma-active compounds in Jasminum sambac concrete by aroma extract dilution analysis and odour activity value, Category: esters-buliding-blocks, the main research area is linalool cis3hexanyl acetate eugenol aroma active compound Jasminum.

Jasminum sambac is a flower and usually used in food, cosmetics or other chem. industries for its unique flavor characteristics in China. However, mol. sensory technologies have not applied to identify aroma-active compounds in J sambac concrete. In this study, gas chromatog.-olfactometry (GC-O), gas chromatog.-mass spectrometry and solvent-assisted flavor evaporation were applied to isolate the odorants in three Chinese J sambac concrete (E1, E2 and E3) obtained from different companies. A total of forty-nine, forty-eight, thirty-nine odorants were screened by GC-O with aroma extract dilution anal. in E1, E2 and E3, resp. The higher flavor dilution (FD) factors were linalool (19 683-59 049, floral), Me anthranilate (6561-19 683, grape-like) and benzyl acetate (2187-19 683, floral). Twenty-two aroma compounds were quantitated by gas chromatog.-flame ionization detection with internal standard, and then their odor activity values were obtained. Linalool, cis-3-hexenyl acetate, linalyl acetate, eugenol and Me salicylate contributed greatly to the aroma of J sambac concretes. The aroma recombination model was established by mixing twenty-two key odorants based on their measured concentrations, and the result revealed that the overall aroma profile was similar to that of the original sample. These results proved basic data for improvement of the national standard of jasmine concrete.

Flavour and Fragrance Journal published new progress about Anesthetics. 140-11-4 belongs to class esters-buliding-blocks, name is Benzyl acetate, and the molecular formula is C9H10O2, Category: esters-buliding-blocks.

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

Piesik, Dariusz published the artcileInduction of volatile organic compounds in Triticum aestivum (wheat) plants following infection by different Rhizoctonia pathogens is species specific, Related Products of esters-buliding-blocks, the main research area is Triticum Rhizoctonia VOC benzyl acetate hexenal linalool mycelium; Odors; Poaceae; Rhizoctonia spp. pathogens; Triticum aestivum; VOCs; Volatile organic compounds; Wheat.

The most popular means of plant protection is the chem. method, but this control is often connected with the need for repeating chem. treatments. Thus, eco-friendly strategies should be developed where, under the European Green Deal, aromatic plants and their repellent properties seem to constitute a good alternative. In earlier studies, we have shown that insect injury, bacteria infestation and pathogen infection induce plant volatile organic compounds (VOCs) emission, which can provide defensive functions to plants. In this study, Triticum aestivum L.(Poaceae) cv. ′Jenga′ wheat plants were intentionally infected with one of four Rhizoctonia species (R. cerealis, R. solani, R. zeae, and R. oryzae). The soil was inoculated by the pathogens during sowing, whereas shoots were inoculated at stage BBCH 33. In greenhouse experiments, we measured VOCs from wheat 3, 7 and 11 days following stem infestation, or 42 days following soil inoculation of Rhizoctonia spp. VOC emissions were found to be largest on days 7 or 11 post-stem inoculation (>3 days post-stem inoculation >42 days post-soil inoculation). T. aestivum infected by pathogens induced five common green leaf volatiles (GLVs), namely (Z)-3-hexenal = (Z)-3-HAL, (E)-2-hexenal = (E)-2-HAL, (Z)-3-hexen-1-ol = (Z)-3- HOL, (E)-2-hexenol = (E)-2-HOL, (Z)-3-hexen-1-yl acetate = (Z)-3-HAC], six common terpenes (β-pinene = β-PIN, β-myrcene = β-MYR, Z-ocimene = Z-OCI, linalool = LIN, benzyl acetate = BAC, β-caryophyllene = β-CAR), and indole = IND. We found that R. cerealis infested T. aestivum emitted the largest amounts of (Z)-3-HAL and (Z)-3-HAC, while T. aestivum infested by R. solani released the largest amount of LIN (7 or 11 days following stem infestation). VOCs released by the T. aestivum after R. cerealis (AGD I) and R. solani (AG 5) infestations were significantly larger in comparison to R. zeae (WAG-Z) and R. oryzae (WAG-O) for the volatiles (Z)-3-HAL, (E)-2-HAL, (Z)-3-HOL, (E)-2-HOL, (Z)-3-HAC, β-PIN, β-MYR, and LIN. With the exception of (E)-2-HOL, β-MYR, LIN, BAC, β-CAR, the other VOCs were emitted in similar amounts by infected T. aestivum 3 days following stem and soil inoculation. The quantities of induced VOCs were higher at days 7 and 11 than at 3 days post-infection, and greater when T. aestivum was infected with Rhizoctonia on the stem base than through the soil.

Phytochemistry (Elsevier) published new progress about Anastomosis. 140-11-4 belongs to class esters-buliding-blocks, name is Benzyl acetate, and the molecular formula is C9H10O2, Related Products of esters-buliding-blocks.

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

Schreur-Piet, Ingeborg published the artcileAmphiphilic Statistical Copolymers from Catalytic Chain Transfer as Reactive Surfactants in Emulsion Polymerization, Application of Dodecyl 2-methylacrylate, the main research area is amphiphilic statistical copolymer chain transfer reactive surfactant emulsion polymerization.

Statistical copolymers of methacrylic acid (MAA) and Me methacrylate (MMA), Bu methacrylate (BMA), or lauryl methacrylate (LMA) were synthesized via cobalt(II)-mediated catalytic chain transfer polymerization (CCTP) and used as macromonomeric stabilizers in the emulsion polymerization of MMA. By varying the composition, length, and concentration of the macromonomers, we were able to tune the particle size, molar mass, and rheol. behavior of the latexes. Most latexes stabilized with macromonomers containing BMA and LMA showed rheol. properties such as small yield stress and shear thinning behavior similar to those of binders for coating applications.

ACS Applied Polymer Materials published new progress about Amphiphiles. 142-90-5 belongs to class esters-buliding-blocks, name is Dodecyl 2-methylacrylate, and the molecular formula is C16H30O2, Application of Dodecyl 2-methylacrylate.

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