Category: esters-buliding-blocks

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

Al Mawali, Mawiya Jaifar Talib published the artcileComparative phytochemical investigations and in vitro pharmacological activities of different brands of olive oil, HPLC of Formula: 929-77-1, the main research area is olive oil phytochem pharmacol antioxidant.

Olive oil is composed of primary triacylglycerol about 99% of the whole components and secondary fatty acids which are mono, diacylglycerols and phosphates. Olive oil is known to contain many active constituents with different pharmacol. actions such as antioxidant action. The purpose of this research is thus, to compare phytochem. components of different olive oil brands as well as to determine their cytotoxic and antioxidant properties. All those four brands of extra virgin olive oil contained all necessary active constituents especially oleic acid, palmitic acid and linoleic acid. Due to the presence of healthy constituents, all four brands of olive oil showed equivalent antioxidant activity. No cytotoxic activity was reported on the evaluated concentrations Overall comparison of phytochems. as well as pharmacol. activities of all four brands of extra virgin olive oil was found to be satisfactory.

Journal of Applied Sciences published new progress about Artemia salina. 929-77-1 belongs to class esters-buliding-blocks, name is Methyl docosanoate, and the molecular formula is C23H46O2, HPLC of Formula: 929-77-1.

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

Al Mawali, Mawiya Jaifar Talib published the artcileComparative phytochemical investigations and in vitro pharmacological activities of different brands of olive oil, Recommanded Product: Methyl octanoate, the main research area is olive oil phytochem pharmacol antioxidant.

Olive oil is composed of primary triacylglycerol about 99% of the whole components and secondary fatty acids which are mono, diacylglycerols and phosphates. Olive oil is known to contain many active constituents with different pharmacol. actions such as antioxidant action. The purpose of this research is thus, to compare phytochem. components of different olive oil brands as well as to determine their cytotoxic and antioxidant properties. All those four brands of extra virgin olive oil contained all necessary active constituents especially oleic acid, palmitic acid and linoleic acid. Due to the presence of healthy constituents, all four brands of olive oil showed equivalent antioxidant activity. No cytotoxic activity was reported on the evaluated concentrations Overall comparison of phytochems. as well as pharmacol. activities of all four brands of extra virgin olive oil was found to be satisfactory.

Journal of Applied Sciences published new progress about Artemia salina. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Recommanded Product: Methyl octanoate.

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

Penin, Lucia published the artcileFractionation of Eucalyptus regnans wood: properties of the soluble products and reactivity of the treated solids, Recommanded Product: Ethyl 4-oxopentanoate, the main research area is ethyl levulinate preparation Eucalyptus regnans wood autohydrolysis delignification.

Eucalyptus regnans wood samples were treated with water under diverse conditions, in order to obtain soluble hemicellulose-derived products. The composition of the liquid phase from the treatment leading to the best results was characterized in depth using a combination of spectrophotometric, spectrometric and chromatog. methods; and the susceptibility of the treated solids to further fractionation by organosolv delignification was assessed in addnl. experiments The chem. and physicochem. properties of the resulting lignin were determined, and the suitability of the delignified solids as substrates for the one-pot manufacture of Et levulinate was evaluated on a quant. basis.

Journal of Wood Chemistry and Technology published new progress about Autohydrolysis. 539-88-8 belongs to class esters-buliding-blocks, name is Ethyl 4-oxopentanoate, and the molecular formula is C7H12O3, Recommanded Product: Ethyl 4-oxopentanoate.

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

Sazawa, Kazuto published the artcileEvaluation of carbon mineralization and structural alterations of organic carbon in high-moor peat soils during incubation, Formula: C11H22O2, the main research area is organic carbon moor peat soil mineralization incubation.

The quantity and quality of soil organic matter (SOM) in the wetlands and peatlands are important for evaluating of the effects of environmental changes. This study’s aim was to evaluate the change in the chem. properties of SOM and dissolved organic matter (DOM) during a constant temperature incubation of high-moor peat soil under two types of vegetation. Incubation of high-moor peat soils collected from marsh vegetation and dwarf bamboo was conducted for 108 days at each temperature of 25°C and 35°C. The chem. properties of alk. extract and DOM in soil samples during incubation were analyzed by tetramethylammonium hydroxide thermochemolysis-gas chromatog.-mass spectrometry (TMAH-GC/MS) and fluorescence anal. The cumulative CO2 emission from peat under dwarf bamboo was higher than that of peat under marsh vegetation. During incubation at 35°C, plant and microbial residues in DOM extracted from dwarf bamboo soil were increased significantly at the early stages of culture. On the other hand, the components of DOM in the marsh vegetation soil sample did not significantly change between incubation at each temperature The fluorescence spectra showed that protein-like fluorescent DOM contained in dwarf bamboo soil is consumed by microorganisms, which promotes leaching of humic-like fluorescent DOM and carbon mineralization during the incubation period at a higher temperature Compared with marsh vegetation soil, the DOM in dwarf bamboo soil is susceptible to temperature rises and can be a larger source of CO2 emissions. This study shows that evaluation of DOM properties in soil could be useful to assess the effect of climate change on soil environment.

Journal of Soils and Sediments published new progress about Bamboo (dwarf). 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Formula: C11H22O2.

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

Sazawa, Kazuto published the artcileEvaluation of carbon mineralization and structural alterations of organic carbon in high-moor peat soils during incubation, Computed Properties of 111-11-5, the main research area is organic carbon moor peat soil mineralization incubation.

The quantity and quality of soil organic matter (SOM) in the wetlands and peatlands are important for evaluating of the effects of environmental changes. This study’s aim was to evaluate the change in the chem. properties of SOM and dissolved organic matter (DOM) during a constant temperature incubation of high-moor peat soil under two types of vegetation. Incubation of high-moor peat soils collected from marsh vegetation and dwarf bamboo was conducted for 108 days at each temperature of 25°C and 35°C. The chem. properties of alk. extract and DOM in soil samples during incubation were analyzed by tetramethylammonium hydroxide thermochemolysis-gas chromatog.-mass spectrometry (TMAH-GC/MS) and fluorescence anal. The cumulative CO2 emission from peat under dwarf bamboo was higher than that of peat under marsh vegetation. During incubation at 35°C, plant and microbial residues in DOM extracted from dwarf bamboo soil were increased significantly at the early stages of culture. On the other hand, the components of DOM in the marsh vegetation soil sample did not significantly change between incubation at each temperature The fluorescence spectra showed that protein-like fluorescent DOM contained in dwarf bamboo soil is consumed by microorganisms, which promotes leaching of humic-like fluorescent DOM and carbon mineralization during the incubation period at a higher temperature Compared with marsh vegetation soil, the DOM in dwarf bamboo soil is susceptible to temperature rises and can be a larger source of CO2 emissions. This study shows that evaluation of DOM properties in soil could be useful to assess the effect of climate change on soil environment.

Journal of Soils and Sediments published new progress about Bamboo (dwarf). 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Computed Properties of 111-11-5.

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

Anastasiou, Ioanna A. published the artcileIn vitro data of current therapies for SARS-CoV-2, Quality Control of 55981-09-4, the main research area is review therapy SARS CoV 2; ACE2 receptor; SARS-CoV-2 (COVID-19); VeroE6 Cells; in vitro studies; therapies; vaccines.

Background: In Dec. 2019, a new coronavirus, named Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2), emerged from China, causing pneumonia outbreaks first in the Wuhan region and then spread worldwide. Due to a lack of efficient and specific treatments and the need to contain the epidemic, drug repurposing appears to be the most efficient tool to find a therapeutic solution Objectives: The aim of this study was to summarize in vitro data of current agents used for the management of SARS-CoV-2 all over the world. Methods: A literature search of articles from Jan. 2000 until Apr. 2020 was performed using MEDLINE, EMBASE and the Cochrane Library to assess in vitro data of current or putative therapies for SARS-CoV-2. Results: Although in vitro studies are scarce, data regarding chloroquine, hydroxychloroquine, remdesivir, nitazoxanide, teicoplanin, ivermectin, lopinavir, homoharringtonine, and emetine seem promising. Conclusion: Scientists all over the world should work together and increase their efforts in order to find feasible and efficient solutions against this new global viral threat.

Current Medicinal Chemistry published new progress about Allium sativum. 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

Leite, Victor S. A. published the artcileUntargeted Metabolomics Reveals Metabolic Changes Linked to Bulb Purpling in Garlic (Allium sativum L.), Application of Methyl octanoate, the main research area is Allium bulb purpling metabolomics metabolism.

Garlic (Allium sativum L.) is a vegetable known worldwide, mainly for its characteristic aroma and flavor and for exhibiting several medicinal properties. This culture has significant economic and social relevance in the world agricultural scenario. Most of the garlic production is sold in fresh bulbs, where for some countries the more purple skin bulbs are more valued in the market. However, there is still no consensus about the factors that intensify the purple color of the garlic bulbs. Here, we employed gas chromatog.-mass spectrometry-based untargeted metabolomics to study the metabolome of dark and light purple garlics. Multivariate statistical anal. revealed distinct metabolite signatures between these garlic groups. As metabolic changes play an important factor in changes in the phenotype of cells or an organism, this report presents a fundamental approach for supporting garlic producers in understanding the factors that intensify the purplish color of garlic bulbs, paving the way for safer garlic production with dark purple bulbs. In addition, the medicinal properties of dark purple garlic were greater than that of the light purple garlic, presenting greater abundance in organosulfur compounds Overall, the data suggest that some organic acid and fatty acids such as malonic acid and docosanoic acid are the key differentiating factors between dark and light purple garlics.

ACS Food Science & Technology published new progress about Allium sativum. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Application of Methyl octanoate.

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

Masi, Marco published the artcileIsolation and Biological Characterization of Homoisoflavanoids and the Alkylamide N-p-Coumaroyltyramine from Crinum biflorum Rottb., an Amaryllidaceae Species Collected in Senegal, Related Products of esters-buliding-blocks, the main research area is Isolation Biol Homoisoflavanoids Alkylamide Crinum biflorum; Crinum biflorum; alkylamides; antidiabetic and anti-acetylcholinesterase activities; antioxidant; cytotoxicity; homoisoflavanoids.

Four homoisoflavonoids (1-4) and one alkylamide (5) were isolated and characterized as 5,6,7-trimethoxy-3-(4-hydroxybenzyl)chroman-4-one (1), as 3-hydroxy-5,6,7-trimethoxy-3-(4-hydroxybenzyl)chroman-4-one (2), as 3-hydroxy-5,6,7-trimethoxy-3-(4-methoxybenzyl)chroman-4-one (3) and as 5,6,7-trimethoxy-3-(4-methoxybenzyl)chroman-4-one (4), and the alkylamide as (E)-N-(4-hydroxyphenethyl)-3-(4-hydroxyphenyl)acrylamide (5), commonly named N-p-coumaroyltyramine. The relative configuration of compound 1 was verified thanks to the X-ray anal. which also allowed us to confirm its racemic nature. The absolute configurations of compounds 2 and 3 were assigned by comparing their ECD spectra with those previously reported for urgineanins A and B. Flavanoids 1, 3 and 4 showed promising anticancer properties being cytotoxic at low micromolar concentrations towards HeLa and A431 human cancer cell lines. The N-p-coumaroyltyramine (5) was selectively toxic to A431 and HeLa cancer cells while it protected immortalized HaCaT cells against oxidative stress induced by hydrogen peroxide. Compounds 1-4 also inhibited acetylcholinesterase activity with compound 3 being the most potent. The anti-amylase and the strong anti-glucosidase activity of compound 5 were confirmed. Our results show that C. biflorum produces compounds of therapeutic interest with anti-diabetic, anti-tumoral and anti-acetylcholinesterase properties.

Biomolecules published new progress about Amaryllidaceae. 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, Related Products of esters-buliding-blocks.

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

Wu, Kam-chau published the artcileApplication of anaerobic bacterial ammonification pretreatment to microalgal food waste leachate cultivation and biofuel production, Formula: C11H22O2, the main research area is Dunaliella microalgae food waste leachate cultivation anaerobic digestion ammonification; Algal lipids production; Anaerobic digestion; Cyanobacterium apononium; Dunaliella tertiolecta; Food waste leachate.

The current practice of disposing of biodegradable food waste mixed with other solid wastes to landfills is not sustainable and is environmentally undesirable. Moreover, the leakage of nutrient-rich food waste leachate (FWL) impacts the environment by eutrophication of the water body. Two robust microalgal species, Dunaliella tertiolecta (D. tertiolecta) and Cyanobacterium aponinum (C. aponinum), have been selected previously for the treatment of FWL because they can tolerate diluted FWL. However, growth suppression by some inhibiting factors, such as total suspended solids and organic nitrogen, limited biomass productivity, and substantial dilution (5-10% volume/volume FWL) was required. To alleviate this suppression, anaerobic bacterial digestion was proposed to pretreat FWL and convert certain nutrients such as organic nitrogen to ammonium. The pretreatment was optimized in neutral to slightly alk. media, where a byproduct of biomethane up to 4.67 L methane/kg COD was produced. Regarding the nutrient removal efficiency, 98.99% of total nitrogen and 65% of total phosphorus can be removed by D. tertiolecta, whereas more than 80% of total nitrogen and 65% of total phosphorus can be removed by C. aponinum. The use of anaerobic bacterial ammonification pretreatment can significantly improve the performance of subsequent microalgal treatments and has been shown to be a sustainable green technol. for biofuel production and FWL recycling.

Marine Pollution Bulletin published new progress about Ammonification. 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Formula: C11H22O2.

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