Month: December 2022

Iglesias, A. published the artcileEssential oils from Humulus lupulus as novel control agents against Varroa destructor, HPLC of Formula: 110-42-9, the main research area is Humulus lupulus essential oil Varroa destructor control agent.

Humulus lupulus, commonly known as hops has widely been used in breweries globally, however, the acaricidal properties of H. lupulus derived products could also be a novel and interesting avenue of study against insect pests. We tested the antiparasitic activity of H. lupulus essential oils against the honeybee mite Varroa destructor, and its bioactivity against the honeybee Apis mellifera. The hop varieties used in this study were Cascade, Victoria, Spalt, and Mapuche. The essential oils were extracted from flowers by hydrodistillation and then characterized by CG-MS. We evaluated the toxicity of hop essential oils against mites, adult bees (A. mellifera) and larvae, and whether the oils were an attractant or repellent to mites. The major components of the oils for all varieties were β-myrcene, myrcene, beta-farnesene, alpha, and beta caryophyllene. Bioassays revealed that essential oils from all the varieties were toxic to the V. destructor mite. Victoria essential oil was the most toxic to V. destructor. The oils did not act as a repellent or attractant to the mites, and the bee (A. mellifera) mortality associated with complete exposure to the essential oil application was moderate to low. The results presented here provide promising results for the application of essential oils from hops grown in South America as an alternative method for controlling the honeybee mite Varroa destructor.

Industrial Crops and Products published new progress about Apis mellifera. 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, HPLC of Formula: 110-42-9.

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

Hashan, Mohammad Rashidul published the artcileEffect of nitazoxanide on diarrhea: A systematic review and network meta-analysis of randomized controlled trials, SDS of cas: 55981-09-4, the main research area is review nitazoxanide antidiarrheals diarrhea; Antibiotic; Diarrhea; Meta-analysis; Nitazoxanide; Systematic review.

We aimed to systematically review evidence pertaining to the safety and efficacy of nitazoxanide in treating infectious diarrhea. On Sept. 21, 2017, we identified relevant studies using 12 databases. The estimates of the included studies were pooled as a risk ratio (RR). We conducted a network and pairwise random-effects meta-anal. for both direct and indirect comparisons of different organisms that are known to cause diarrhea. The primary and secondary anal. outcomes were clin. response until cessation of illness, parasitol. response and adverse events. We included 18 studies in our anal. In cryptosporidiosis, the overall estimate favored nitazoxanide in its clin. response in comparison with placebo RR 1.46 [95% CI 1.22-1.74; P-value <0.0001]. Network meta-anal. among patients with Giardia intestinalis showed an increase in the probability of diarrheal cessation and parasitol. responses in comparison with placebo, RR 1.69 [95% CI 1.08-2.64, P-score 0.27] and RR 2.91 [95% CI 1.72-4.91, P-score 0.55] resp. In Clostridium difficile infection, the network meta-anal. revealed a non-significantly superior clin. response effect of nitazoxanide to metronidazole 31 days after treatment RR 1.21 [95% CI 0.87-1.69, P-score 0.26]. In Entamoeba histolytica, the overall estimate significantly favored nitazoxanide in parasitol. response with placebo RR 1.80 [95% CI 1.35-2.40, P-value < 0.001]. We highlighted the effectiveness of nitazoxanide in the cessation of diarrhea caused by Cryptosporidium, Giardia intestinalis and Entamoeba histolytica infection. We also found significant superiority of NTZ to metronidazole in improving the clin. response to G. intestinalis, thus it may be a suitable candidate for treating infection-induced diarrhea. To prove the superiority of NTZ during a C. difficile infection may warrant a larger-scale clin. trial since its superiority was deemed insignificant. We recommend nitazoxanide as an appropriate option for treating infectious diarrhea. Acta Tropica published new progress about Antidiarrheals. 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

Al-Rajhi, Aisha M. H. published the artcileMolecular Interaction Studies and Phytochemical Characterization of Mentha pulegium L. Constituents with Multiple Biological Utilities as Antioxidant, Antimicrobial, Anticancer and Anti-Hemolytic Agents, Name: Methyl docosanoate, the main research area is Mentha Bacillus luteolin chrysoeriol antioxidant antimicrobial anticancer mol interaction; Mentha pulegium; anticancer; anticoagulant; antimicrobial; antioxidant.

Multiple biol. functions of Mentha pulegium extract were evaluated in the current work. Phytochem. components of the M. pulegium extract were detected by Gas Chromatog.-Mass Spectrometry (GC-MS) and High-performance liquid chromatog. (HPLC). Moreover, M. pulegium extract was estimated for antioxidant potential by 2,2-Diphenyl-1-picryl-hydrazyl-hydrate (DPPH) free radical scavenging, antimicrobial activity by well diffusion, and anticoagulant activity via prothrombin time (PT) and activated partial thromboplastin time (APTT). GC-MS anal. detected compounds including cholesterol margarate, stigmast-5-en-3-ol, 19-nor-4-androstenediol, androstan-17-one, pulegone-1,2-epoxide, isochiapin B, dotriacontane, hexadecanoic acid and neophytadiene. Chrysoeriol (15.36 μg/mL) was followed by kaempferol (11.14 μg/mL) and 7-OH flavone (10.14 μg/mL), catechin (4.11 μg/mL), hisperdin (3.05 μg/mL), and luteolin (2.36 μg/mL) were detected by HPLC as flavonoids, in addition to ferulic (13.19 μg/mL), cinnamic (12.69 μg/mL), caffeic (11.45 μg/mL), pyrogallol (9.36 μg/mL), p-coumaric (5.06 μg/mL) and salicylic (4.17 μg/mL) as phenolics. Antioxidant activity was detected with IC50 18 μg/mL, hemolysis inhibition was recorded as 79.8% at 1000 μg/mL, and PT and APTT were at 21.5 s and 49.5 s, resp., at 50 μg/mL of M. pulegium extract The acute toxicity of M. pulegium extract was recorded against PC3 (IC50 97.99 μg/mL) and MCF7 (IC50 80.21 μg/mL). Antimicrobial activity of M. pulegium extract was documented against Bacillus subtilis, Escherichia coli, Pseudomonasaureus, Candida albicans, Pseudomonas aeruginosa, but not against black fungus Mucor circinelloides. Mol. docking was applied using MOE (Mol. Operating Environment) to explain the biol. activity of neophytadiene, luteolin, chrysoeriol and kaempferol. These compounds could be suitable for the development of novel pharmacol. agents for treatment of cancer and bacterial infections.

Molecules published new progress about Anticoagulants. 929-77-1 belongs to class esters-buliding-blocks, name is Methyl docosanoate, and the molecular formula is C23H46O2, Name: Methyl docosanoate.

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

El-Nashar, Heba A. S. published the artcileChemical composition, cytotoxic and anti-arthritic activities of hexane extracts of certain Schinus species, Safety of Methyl docosanoate, the main research area is chem composition cytotoxic anti arthritic hexane extract Schinus species.

The genus Schinus (Anacardiaceae) comprises about 29 species that are utilized in both traditional and current medicine to alleviate various disorders such as rheumatism, bronchial infections, stomach upset, menstrual disturbance, bronchitis, and conjunctivitis. In this study we aimed to investigate the chem. composition of hexane extracts obtained from Schinus polygamous and Schinus terebinthifolius leaves as well as their cytotoxic and anti-arthritic activities. The GC-MS anal. of S. polygamus leaves revealed identification of fifty-five components: being betulin (6.54%), phytol acetate (5.27%), lupeol (3.96%), palmitic acid Me ester (3.58%) and heptacosane (3.25%). While, seventeen compounds were identified in S. terebinthifolius leaves, predominately characterized by phytol (14.70%), lupeol (13.33%), linolenic acid Me ester (11.17%), palmitic acid Me ester (7.74%), and 28-oxours-12-en-3-yl acetate (7.44%). Both extracts showed moderate cytotoxic activities against hepatocellular carcinoma cells with IC50 values of 102.65 and 65.55μg/mL, resp. While colorectal carcinoma cell line presented IC50 values of 217.78 and 83.55μg/mL, resp. Further, both extracts provided moderate anti-arthritic effects (IC50: 80.12 and 63.09μg/mL, resp.) using protein denaturation test, compared to diclofenac sodium (IC50 = 15.12μg/mL).

Journal of Pharmacy and Pharmacology (Wilmington, DE, United States) published new progress about Antiarthritics. 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

Martin, Chantal published the artcileSelectively Tunable Luminescence of Perovskite Nanocrystals Embedded in Polymer Matrix Allows Direct Laser Patterning, Quality Control of 142-90-5, the main research area is luminescence perovskite nanocrystal polymer matrix laser patterning.

Cesium lead halide perovskite nanocrystals (NCs) have gained enormous attention as promising light-emitting and light-converting materials. Most of their applications require embedding NCs in various matrixes, which is a challenging task due to their low stability, especially in the case of red-emitting CsPbI3 NCs. In this work, a new approach is proposed allowing the formation of red-emitting perovskite NCs by anion exchange induced directly inside a solid polymer matrix using green-emitting CsPbBr3 NCs as templates and iodododecane as an iodine source. Moreover, a simple and efficient route to photo-assisted termination of the anion exchange reaction in the polymer composite after reaching desired optical properties is demonstrated. The findings allow the authors to pattern a thin composite film with an ultrashort UV laser resulting in a selective generation of green- and red-emitting features with a 15μm resolution

Advanced Optical Materials published new progress about Anion exchange. 142-90-5 belongs to class esters-buliding-blocks, name is Dodecyl 2-methylacrylate, and the molecular formula is C16H30O2, Quality Control of 142-90-5.

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

Vollmer, Kathrin published the artcileNon-thermal processing of pineapple (Ananas comosus [L.] Merr.) juice using continuous pressure change technology (PCT): HS-SPME-GC-MS profiling, descriptive sensory analysis, and consumer acceptance, Quality Control of 111-11-5, the main research area is pineapple juice; Juice quality; Non-thermal processing; Pasteurisation; Pineapple; Pressure change technology; Sensory analysis; Volatiles.

The effects of single and twofold continuous pressure change technol. (PCT) applications on the volatiles and sensory characteristics of pineapple juice were studied. Fresh and thermally pasteurised juices were addnl. characterised. 128 volatiles were tentatively assigned in the four juices. Thermal pasteurisation and a single PCT treatment caused substantial losses in total volatiles of 6 and 20%, resp. A second PCT passage further reduced the volatiles (36%) and is thus not recommended. PCT-treated samples were clearly distinguished from the remaining juices by principal component anal. The descriptive sensory profiles, assessed by trained panellists, were not substantially affected by thermal pasteurisation and non-thermal PCT. The fresh juice exhibited a significant fishy off-flavor. In the consumer acceptance test, the thermally pasteurised juice was highly rated compared to both PCT-treated and the fresh juice. This study highlights the potential of PCT to avoid the genesis of off-flavours in fresh-like pineapple juice.

Food Chemistry published new progress about Ananas comosus. 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

Zhang, Boqin published the artcileEffects of three indigenous non-Saccharomyces yeasts and their pairwise combinations in co-fermentation with Saccharomyces cerevisiae on volatile compounds of Petit Manseng wines, SDS of cas: 106-32-1, the main research area is Petit manseng wine fermentation Saccharomyces cerevisiae volatile compound; Aroma compounds; Dynamic changes; Indigenous non-Saccharomyces strains; Mixed fermentation; Petit Manseng wine.

The combined use of selected Saccharomyces cerevisiae and non-Saccharomyces strains is becoming an effective way to achieve wine products with distinctive aromas. The purpose of this study was to further improve the wine aroma complexity through optimizing inoculation protocols of multi-starters. The three indigenous non-Saccharomyces strains (Torulaspora delbrueckii, Hanseniaspora vineae, and Lachancea thermotolerans) and their pairwise combinations (co-inoculation) were sequentially inoculated with S. cerevisiae in Petit Manseng grape must, resp. Results evidenced a higher divergence in aroma compounds produced by two different non-Saccharomyces species compared to single species. Especially for the combination of T. delbrueckii and L. thermotolerans, the concentrations of most Et esters were further increased, contributing to a higher score of pineapple note in agreement with sensory anal. Our results highlighted that the inoculation of more than one non-Saccharomyces species is a potential strategy to improve the aroma diversity and quality of industrial wines.

Food Chemistry published new progress about Ananas comosus. 106-32-1 belongs to class esters-buliding-blocks, name is Ethyl octanoate, and the molecular formula is C10H20O2, SDS of cas: 106-32-1.

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

Zhang, Boqin published the artcileEffects of three indigenous non-Saccharomyces yeasts and their pairwise combinations in co-fermentation with Saccharomyces cerevisiae on volatile compounds of Petit Manseng wines, Name: Ethyl nonanoate, the main research area is Petit manseng wine fermentation Saccharomyces cerevisiae volatile compound; Aroma compounds; Dynamic changes; Indigenous non-Saccharomyces strains; Mixed fermentation; Petit Manseng wine.

The combined use of selected Saccharomyces cerevisiae and non-Saccharomyces strains is becoming an effective way to achieve wine products with distinctive aromas. The purpose of this study was to further improve the wine aroma complexity through optimizing inoculation protocols of multi-starters. The three indigenous non-Saccharomyces strains (Torulaspora delbrueckii, Hanseniaspora vineae, and Lachancea thermotolerans) and their pairwise combinations (co-inoculation) were sequentially inoculated with S. cerevisiae in Petit Manseng grape must, resp. Results evidenced a higher divergence in aroma compounds produced by two different non-Saccharomyces species compared to single species. Especially for the combination of T. delbrueckii and L. thermotolerans, the concentrations of most Et esters were further increased, contributing to a higher score of pineapple note in agreement with sensory anal. Our results highlighted that the inoculation of more than one non-Saccharomyces species is a potential strategy to improve the aroma diversity and quality of industrial wines.

Food Chemistry published new progress about Ananas comosus. 123-29-5 belongs to class esters-buliding-blocks, name is Ethyl nonanoate, and the molecular formula is C11H22O2, Name: Ethyl nonanoate.

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

Zhang, Boqin published the artcileEffects of three indigenous non-Saccharomyces yeasts and their pairwise combinations in co-fermentation with Saccharomyces cerevisiae on volatile compounds of Petit Manseng wines, Category: esters-buliding-blocks, the main research area is Petit manseng wine fermentation Saccharomyces cerevisiae volatile compound; Aroma compounds; Dynamic changes; Indigenous non-Saccharomyces strains; Mixed fermentation; Petit Manseng wine.

The combined use of selected Saccharomyces cerevisiae and non-Saccharomyces strains is becoming an effective way to achieve wine products with distinctive aromas. The purpose of this study was to further improve the wine aroma complexity through optimizing inoculation protocols of multi-starters. The three indigenous non-Saccharomyces strains (Torulaspora delbrueckii, Hanseniaspora vineae, and Lachancea thermotolerans) and their pairwise combinations (co-inoculation) were sequentially inoculated with S. cerevisiae in Petit Manseng grape must, resp. Results evidenced a higher divergence in aroma compounds produced by two different non-Saccharomyces species compared to single species. Especially for the combination of T. delbrueckii and L. thermotolerans, the concentrations of most Et esters were further increased, contributing to a higher score of pineapple note in agreement with sensory anal. Our results highlighted that the inoculation of more than one non-Saccharomyces species is a potential strategy to improve the aroma diversity and quality of industrial wines.

Food Chemistry published new progress about Ananas comosus. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Category: esters-buliding-blocks.

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

Zhou, Dandan published the artcileCharacterization of soluble sugars, glycosidically bound and free volatiles in fresh-cut pineapple stored at different temperature, Synthetic Route of 106-32-1, the main research area is cut pineapple quality glycosidically bound volatiles soluble sugar glucosidase.

Glycosidically bound volatiles are important precursors of overall aromas in fresh-cut fruit and this bound volatile can be deglycosylated to free forms by the catalyzation of β-glucosidase. The profiles of sugars, free and bound volatiles of fresh-cut pineapple subjected to 4°;C and 20°C were investigated. Results showed that cutting induced the increase of total sugars and sucrose in fresh-cut pineapple compared with whole pineapple, but contents of total sugar and sucrose decreased along with the storage. Cutting promoted the increase of most free esters, aldehydes, ketones and lactones at 1 d. Correspondingly, most esters, aldehydes, ketones and lactones in bound from were decreased by cutting with the induction of β-glucosidase. Besides, most free volatiles exhibited increased trends at 1 d and then decreased afterwards. Most bound volatiles exhibited decreased trends during the storage. Furthermore, in 20°C stored fresh-cut pineapple, most free esters decreased sharply during 4 d storage, and odor flavors became the most abundant aromas, like isoamyl acetate, Et decanoate, Et octanoate, Et acetate, and ethanol. A total of 14 volatiles were identified in free and bound forms, and cutting inhibited the accumulations of these bound volatiles but boosted the emissions of these free volatiles, correspondingly.

Food Bioscience published new progress about Ananas comosus. 106-32-1 belongs to class esters-buliding-blocks, name is Ethyl octanoate, and the molecular formula is C10H20O2, Synthetic Route of 106-32-1.

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