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PubMed Journals Articles About "Global Chinese Behenic Acid Ethyl Ester Industry 2017" RSS

10:27 EDT 23rd March 2019 | BioPortfolio

Global Chinese Behenic Acid Ethyl Ester Industry 2017 PubMed articles on BioPortfolio. Our PubMed references draw on over 21 million records from the medical literature. Here you can see the latest Global Chinese Behenic Acid Ethyl Ester Industry 2017 articles that have been published worldwide.

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Showing "Global Chinese Behenic Acid Ethyl Ester Industry 2017" PubMed Articles 1–25 of 21,000+

A Mild and Efficient Preparation of Phytosteryl Amino Acid Ester Hydrochlorides and Their Emulsifying Properties.

The aim of this work was to produce a series of phytosteryl amino acid ester hydrochlorides by two-step method, which involved esterification of phytosterols with N-tert-butoxycarbonyl (BOC)-amino acid and deprotection of BOC group. The highest yield of over 95.0% was obtained when the catalysts were the mixtures of 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochlide (EDC), 4-dimethylaminopyridine (DMAP) and triethylamine. It was found that batch charging of the reactants and catalysts was conducive ...


Strategies to improve bioavailability of omega-3 fatty acids from ethyl ester concentrates.

To describe recent strategies that have been developed to enhance absorption of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) from dietary supplements.

EFFECT OF SALIVA ESTERASE ACTIVITY ON ESTER SOLUTIONS AND POSSIBLE CONSEQUENCES FOR THE IN-MOUTH ESTER RELEASE DURING WINE INTAKE.

The aim of the present study was to investigate the role of saliva esterase activity on carboxylic esters typically associated with pleasant and fruity aromas in wine. For this, ex-vivo experiments using the same fresh and inactivated (without enzymatic activity) human saliva with a mixture of carboxylic esters with different aliphatic chain length (ethyl butanoate, ethyl pentanoate, ethyl hexanoate, ethyl octanoate, ethyl decanoate and isoamyl acetate) were prepared. Liquid-liquid extraction with dichlorom...


Genetic diversity of porcine circovirus type 2 in China between 1999-2017.

Porcine circovirus type 2 (PCV-2), is linked to PCV-2 associated disease, which has caused considerable economic loss in the swine industry. Here, we report the genetic diversity of PCV-2 in China. A total of 74 Chinese PCV-2 strains sequenced between 1999 and 2017 were studied. Based on the ORF2 and complete genomes, we found that apart from the PCV-2a, PCV-2b, and PCV-2d genotypes, two unstable recombination genotypes also exist, referred to as IM1 and IM2 genotypes. We found that the patterns of PCV-2 ge...

RIFM fragrance ingredient safety assessment, 4-pentenoic acid, 2-acetyl-4-methyl-, ethyl ester, CAS Registry Number 20962-70-3.

Suggestion to construction of regulations from historical evolution of Chinese medicine processing legislation.

Chinese medicine is the treasure of China. It has been the safe guard of health in China for thousands of years. Processing of traditional Chinese medicine (TCM) is an important process of removing crude extracts from natural products and achieving pharmacological properties of TCM. The connotation and norms of herbal preparation in the past dynasties have been improved gradually, and have been included in the code system since the Tang Dynasty. The process of legislative evolution is closely related to the...

Global, regional, and national age-sex-specific mortality for 282 causes of death in 195 countries and territories, 1980-2017: a systematic analysis for the Global Burden of Disease Study 2017.

Global development goals increasingly rely on country-specific estimates for benchmarking a nation's progress. To meet this need, the Global Burden of Diseases, Injuries, and Risk Factors Study (GBD) 2016 estimated global, regional, national, and, for selected locations, subnational cause-specific mortality beginning in the year 1980. Here we report an update to that study, making use of newly available data and improved methods. GBD 2017 provides a comprehensive assessment of cause-specific mortality for 2...

In vivo ester hydrolysis as a new approach in development of PET tracers for imaging hypoxia.

Hypoxia is an important biochemical and physiological condition associated with uncontrolled growth of tumor. Measurement of hypoxia in tumor tissue may be useful in characterization of tumor progression and monitoring drug treatment. [18F]FMISO is the most widely employed radiotracer for imaging of hypoxic tissue with positron emission tomography (PET). However, it showed relatively low uptake in hypoxic tissues, which led to low target-to-background contrast in PET images. To overcome these shortcomings, ...

Induction of Human-Lung-Cancer-A549-Cell Apoptosis by 4-Hydroperoxy-2-decenoic Acid Ethyl Ester through Intracellular ROS Accumulation and the Induction of Proapoptotic CHOP Expression.

Royal jelly, a natural product secreted by honeybees, contains several fatty acids, such as 10-hydroxy-2-decenoic acid (DE), and shows anti- and pro-apoptotic properties. 4-Hydroperoxy-2-decenoic acid ethyl ester (HPO-DAEE), a DE derivative, exhibits potent antioxidative activity; however, it currently remains unclear whether HPO-DAEE induces cancer-cell death. In the present study, treatment with HPO-DAEE induced human-lung-cancer-A549-cell death (52.7 ± 10.2%) that was accompanied by DNA fragmentation. M...

Synthesis of 5-enamine-4-thiazolidinone derivatives with trypanocidal and anticancer activity.

A series of novel 2-(5-aminomethylene-4-oxo-2-thioxothiazolidin-3-yl)-3-phenylpropionic acid ethyl esters has been synthesized. Target compounds were evaluated for their trypanocidal activity towards Trypanosoma brucei brucei and Trypanosoma brucei gambiense. Several hit-compounds (8, 10, 12) inhibited growth of the parasites at sub-micromolar concentrations (IC 0.027-1.936 µM) and showed significant selectivity indices (SI = 108-1396.2) being non-toxic towards the human primary fibroblasts. The scre...

Comparative studies of DHA-enriched phosphatidylcholine and recombination of DHA-ethyl ester with egg phosphatidylcholine on ameliorating memory and cognitive deficiency in SAMP8 mice.

Docosahexaenoic acid-enriched phospholipids (DHA-PLs) are important bioactive components from marine foods, and are barely obtained by people living inland due to limited sources of commercial DHA-PLs compared to commercial DHA-TG and DHA-EE fish oil. Therefore, it is of significance to develop substitutions of DHA-PLs. In the present study, we comparatively investigated the effects of DHA-phosphatidylcholine (PC) and the recombination of DHA-ethyl ester (EE) with egg PC on improving the dysfunction of memo...

Characterization and thermal denaturation kinetic analysis of recombinant L-amino acid ester hydrolase from Stenotrophomonas maltophilia.

Stenotrophomonas maltophilia HS1 exhibits L-amino acid ester hydrolase (SmAEH) activity, which can synthesize dipeptides such as Ile-Trp, Val-Gly, and Trp-His from the corresponding amino acid methyl esters and amino acids. The gene encoding SmAEH was cloned and expressed in Escherichia coli, and was purified and characterized. SmAEH shared 77% sequence identity with a known amino acid ester hydrolase (AEH) from Xanthomonas citri, which belongs to a class of β-lactam antibiotic acylases. The thermal stabil...

N-acetylcysteine ethyl ester as GSH enhancer in human primary endothelial cells: a comparative study with other drugs.

Several drugs are currently in use as glutathione (GSH) enhancers in clinical, pre-clinical and experimental research. Here we compare the ability of N-acetylcysteine (NAC), 2-oxothiazolidine-4-carboxylic acid (OTC), glutathione ethyl ester (GSH-EE) and N-acetylcysteine ethyl ester (NACET) to increase the intracellular concentration of GSH using primary human umbilical vein endothelial cells (HUVEC) as in vitro model. Our experiments highlighted that NACET is largely the most efficient molecule in increasin...

Anti-angiogenic activity of para-coumaric acid methyl ester on HUVECs in vitro and zebrafish in vivo.

Para-coumaric acid methyl ester (pCAME) is one of the bioactive components of Costus speciosus (Koen) Sm. (Zingiberaceae). This plant is traditionally used in Asia to treat catarrhal fevers, worms, dyspepsia, and skin diseases.

Occupational exposure to styrene and its relation with urine mandelic acid, in plastic injection workers.

Plastic injection industry workers are exposed to toxic gases and vapors, including styrene. This study aimed to measure exposure to styrene and its relation with urine mandelic acid among plastics injection workers of the electrical parts industry. This descriptive and analytical cross-sectional study was carried out in the plastic injection halls of the electronics industry, in winter 2017 and spring 2018. Styrene gas in the workers' respiratory region was sampled by the NIOSH 1501 method and was analyzed...

Origins, and formulation implications, of the pK difference between boronic acids and their esters: A density functional theory study.

The purpose of this study is to try to identify the etiology and formulation implications of the significant pK drop in aqueous solution that occurs when boronic acids are reversibly esterified by reaction with alcohols, especially 1,2-diols. Experimental studies have shown that conversion of a boronic acid to a boronic acid ester, both Lewis acids, is accompanied by an increase in the acidity, that is, a lowering of the pK value in aqueous solution. The drop in pK value has significant implications for the...

Analysis of sialic acid levels in Chinese intravenous immunoglobulins by high-performance liquid chromatography with fluorescence detection.

Intravenous immunoglobulin (IVIg) is increasingly used for the treatment of the autoimmune and systemic inflammatory diseases with both licensed and off-label indications. Recent studies indicated that IVIg-mediated immunomodulation and anti-inflammation were crucial associated with the IgG sialylation, especially with IgG Fc sialylation. The sialic acid levels of the IgG molecules and Fc fragments in 12 IVIg preparations from 6 Chinese manufacturers were evaluated. The Fc fragments were derived from the pa...

Measuring progress from 1990 to 2017 and projecting attainment to 2030 of the health-related Sustainable Development Goals for 195 countries and territories: a systematic analysis for the Global Burden of Disease Study 2017.

Efforts to establish the 2015 baseline and monitor early implementation of the UN Sustainable Development Goals (SDGs) highlight both great potential for and threats to improving health by 2030. To fully deliver on the SDG aim of "leaving no one behind", it is increasingly important to examine the health-related SDGs beyond national-level estimates. As part of the Global Burden of Diseases, Injuries, and Risk Factors Study 2017 (GBD 2017), we measured progress on 41 of 52 health-related SDG indicators and e...

Global, regional, and national incidence, prevalence, and years lived with disability for 354 diseases and injuries for 195 countries and territories, 1990-2017: a systematic analysis for the Global Burden of Disease Study 2017.

The Global Burden of Diseases, Injuries, and Risk Factors Study 2017 (GBD 2017) includes a comprehensive assessment of incidence, prevalence, and years lived with disability (YLDs) for 354 causes in 195 countries and territories from 1990 to 2017. Previous GBD studies have shown how the decline of mortality rates from 1990 to 2016 has led to an increase in life expectancy, an ageing global population, and an expansion of the non-fatal burden of disease and injury. These studies have also shown how a substan...

Chlamydomonas sp. as dynamic biorefinery feedstock for the production of methyl ester and ɛ-polylysine.

An integrated production of methyl ester and ɛ-polylysine from Chlamydomonas sp. was studied using biorefinery approach. The harvesting efficiency of Chlamydomonas sp. was increased up to 92% by treatment with a flocculant FeCl at 100 mg/L for 30 min. The DMC (dimethyl carbonate) mediated enzyme catalyzed in-situ transesterification of Chlamydomonas sp. yielded the maximum methyl ester of 92% under optimized conditions. The valued-added product ɛ-polylysine was produced from hydrolysate obtained from ...

Production of Ethyl Esters by Direct Transesterification of Microalga Biomass Using Propane as Pressurized Fluid.

This work aimed to produce ethyl esters from Chlorella vulgaris microalgae biomass, using an immobilized enzymatic catalyst associated with pressurized fluid (propane) by direct transesterification. In order to optimize the ethyl conversion, different temperatures (46.7-68.1 °C) and pressures (59.5-200.5 bar) were applied a central composite design rotational (CCDR) obtaining the high conversion (74.39%) at 50 °C and 180 bar. The molar ratio also was investigated showing conversions ~ 90% using a mo...

Effects of Intrathecal Caffeic Acid Phenethyl Ester (CAPE) on IL-6 and TNF-α Levels and Local Inflammatory Responses in Spinal Cord Injuries.

To investigate the effects of intrathecal caffeic acid phenethyl ester (CAPE) on tissue and serum interleukin-6 (IL-6) and tumor necrosis factor-alpha (TNF-?) levels following spinal cord injury (SCI) as well as its effects on edema and microhemorrhage.

Global, regional, and national comparative risk assessment of 84 behavioural, environmental and occupational, and metabolic risks or clusters of risks for 195 countries and territories, 1990-2017: a systematic analysis for the Global Burden of Disease Study 2017.

The Global Burden of Diseases, Injuries, and Risk Factors Study (GBD) 2017 comparative risk assessment (CRA) is a comprehensive approach to risk factor quantification that offers a useful tool for synthesising evidence on risks and risk-outcome associations. With each annual GBD study, we update the GBD CRA to incorporate improved methods, new risks and risk-outcome pairs, and new data on risk exposure levels and risk-outcome associations.

Adsorption and desorption cycles of reactive blue BF-5G dye in a bone char fixed-bed column.

In the textile industry, the amount of dye unfixed in fabrics is discarded with wastewaters. Effluents of this nature can be treated efficiently by adsorption on activated bone char, but the reuse of adsorbent is necessary for the technique to be economically feasible. Therefore, the objective of this work was to study the process of desorption of BF-5G blue dye from a bone char fixed-bed column. Solutions of sodium chloride, acetic acid and ethyl alcohol were tested as regenerating agents. Due to the hydro...

Presidential address 2017 William Harkness FRCS October 10th 2017 Denver, Co USA: 2017-annus mirabilis, a global view of neurosurgery for children.

The following presidential address was delivered at the 45th Annual Meeting of the ISPN held in Denver, CO, USA in October 2017.


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