Tag: M.W=100-150

Wu, Wan-Lin published the artcileExpression regulation of MALATE SYNTHASE involved in glyoxylate cycle during protocorm development in Phalaenopsis aphrodite (Orchidaceae), Safety of (S)-2-hydroxysuccinic acid, the main research area is Phalaenopsis sucrose glyoxylate MLS protocorm development.

Abstract: Orchid (Orchidaceae) is one of the largest families in angiosperms and presents exceptional diversity in lifestyle. Their unique reproductive characteristics of orchid are attracted by scientist for centuries. One of the synapomorphies of orchid plants is that their seeds do not contain endosperm. Lipids are used as major energy storage in orchid seeds. However, regulation and mobilization of lipid usage during early seedling (protocorm) stage of orchid is not understood. In this study, we compared transcriptomes from developing Phalaenopsis aphrodite protocorms grown on 1/2-strength MS medium with sucrose. The expression of P. aphrodite MALATE SYNTHASE (PaMLS), involved in the glyoxylate cycle, was significantly decreased from 4 days after incubation (DAI) to 7 DAI. On real-time RT-PCR, both P. aphrodite ISOCITRATE LYASE (PaICL) and PaMLS were down-regulated during protocorm development and suppressed by sucrose treatment. In addition, several genes encoding transcription factors regulating PaMLS expression were identified. A gene encoding homeobox transcription factor (named PaHB5) was involved in pos. regulation of PaMLS. This study showed that sucrose regulates the glyoxylate cycle during orchid protocorm development in asymbiotic germination and provides new insights into the transcription factors involved in the regulation of malate synthase expression.

Scientific Reports published new progress about Fatty acids. 97-67-6 belongs to class alcohols-buliding-blocks, name is (S)-2-hydroxysuccinic acid, and the molecular formula is C4H6O5, Safety of (S)-2-hydroxysuccinic acid.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Chen, Deliang published the artcileA general linear free energy relationship for predicting partition coefficients of neutral organic compounds, Category: alcohols-buliding-blocks, the main research area is neutral organic compound free energy relationship partition coefficient QSPR; Computational chemistry; Hydrogen bonding capability; Linear free energy relationship; Partition coefficient; Physicochemical property; Quantitative structure-property relationship.

Predicting the effects of organic compounds on environments and biol. systems is an important objective for environmental chem. and human health. The logarithm (to base 10) of the n-octanol-water partition coefficient has been widely used to predict the mentioned properties. However, the suitability of this parameter for the purpose has been questioned, since the environments relating to the properties may be quite different from that of bulk n-octanol. In this study, we used a theor. derivation approach to develop a model for predicting the partition coefficients of solutes between water and an organic solvent that may be similar to n-octanol or quite different from it. Our model relies on solute descriptors that can be calculated based on solute structures. It was used to predict the n-octanol-water, hexadecane-water and chloroform-water partition coefficients of solutes. The calculated values of the examined parameters agreed well with their exptl. counterparts. The model can find application in the accurate prediction of the effects of organic compounds on environments and the physicochem. properties of organic compounds by a full in-silico approach and can provide useful guidance for improving some properties of organic compounds

Chemosphere published new progress about Free energy. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Category: alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Li, Qingsong published the artcileLiquid-liquid phase equilibrium and interaction exploration for separation 2-methoxy-phenol and water with different solvents, Recommanded Product: n-Octanol, the main research area is methoxy phenol water solvent liquid phase equilibrium.

To recover 2-methoxy-phenol in water, C5-C8 alkyl alcs. were selected as extractants to sep. water and 2-methoxy-phenol. The liquid-liquid equilibrium (LLE) data for water + 2-methoxy-phenol + {1-pentanol, 1-hexanol, 1-heptanol or 1-octanol} were explored in 303.2 K under 101.3 kPa. The extraction performance of four extractants was assessed through the distribution coefficient (D) and separation factor (S). Meanwhile, the NRTL and UNIQUAC models were used to correlate and fit the data to obtain regression parameters. Furthermore, the mixed surface anal. based on Gibbs energy topol. verified that the binary interaction parameters are consistent with the measured data. The LLE data were also predicted through the COSMO-UNIFAC model. The root mean square deviation (RMSD) of the three models do not exceed 0.0023, 0.0030, and 0.0234, resp., indicating that the NRTL and UNIQUAC models are suitable for the correlation of the studied system and the COSMO-UNIFAC model can be the way to predict the LLE data of the researched system within the scope of this work. In addition, the interaction and interaction energy between component mols. were studied through the DMol3 module.

Journal of Molecular Liquids published new progress about Free energy. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Recommanded Product: n-Octanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Lee, Jic-Hyun published the artcileProduction of γ-Aminobutyric Acid and Its Supplementary Role in the TCA Cycle in Rice (Oryza sativa L.) Seedlings., Related Products of alcohols-buliding-blocks, the main research area is Oryza seed germination gamma aminobutyric acid TCA cycle.

In this study, we analyzed GABA shunt-related amino acids [glutamate (Glu), alanine (Ala), and GABA] and tricarboxylic acid (TCA)-cycle-related organic acids (pyruvate, citrate, α-ketoglutarate, succinate, fumarate, and malate) in rice, under dark and anaerobic conditions, to investigate the role of GABA in rice germination. The change in the GABA content before and after germination was compared using 2 cultivars selected from 18 varieties of Korean rice. Correlation anal. indicated that the metabolism of GABA in germinating rice might be related to Ala metabolism In a two-way stress study, GABA content was found to be pos. related to TCA-cycle organic acid contents (α-ketoglutarate, succinate, fumarate, and malate) but show a neg. relation with GABA shunt-related amino acid contents (Glu, Ala). In the dark, accumulation of TCA-cycle organic acids was observed, but Glu and Ala levels were reduced. GABA treatment (1 mM) in dark conditions produced TCA-cycle organic acids at levels similar to those in light conditions. In anaerobic conditions, TCA-cycle-related compounds accumulated at a high level, but Glu and Ala were remarkably reduced compared with normal conditions. As a result, GABA shunt is connected with TCA-cycle organic acids, but not amino acids. In conclusion, the present research suggests that GABA, accumulated in certain stress conditions, supplies organic acids such as succinate to the TCA cycle.

Journal of Plant Growth Regulation published new progress about Germination. 97-67-6 belongs to class alcohols-buliding-blocks, name is (S)-2-hydroxysuccinic acid, and the molecular formula is C4H6O5, Related Products of alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Montanha, Gabriel S. published the artcileZinc uptake from ZnSO4 (aq) and Zn-EDTA (aq) and its root-to-shoot transport in soybean plants (Glycine max) probed by time-resolved in vivo X-ray spectroscopy, Related Products of alcohols-buliding-blocks, the main research area is Glycine root shoot zinc sulfate EDTA X ray spectroscopy; Chemical speciation; Micronutrient transportationin vivo kinetics; XANES; XRF; Zinc uptake.

This study investigated the dynamic of zinc (Zn) uptake and the root-to-shoot Zn-transport when supplied as ZnSO4(aq) or Zn-EDTA (aq) in soybean seedlings using in vivo X-ray fluorescence (XRF) and X-ray absorption spectroscopy (XANES). The time-resolved X-ray fluorescence showed that plants absorbed ca. 10-fold more Zn from ZnSO4(aq) than from Zn-EDTA (aq). However, the uptake velocity did not influence the amount of Zn in the stem. It let furthermore appear that the plants were able to reduce the absorption of Zn from Zn-EDTA (aq) earlier than ZnSO4(aq). Thus, the entrance of Zn2+ into the roots is not necessarily accompanied by SO2-42-(aq). Regardless the source, the Zn distribution and its transport in the stem were spatially correlated to the bundles and cortex nearby the epidermal cells. Its chem. speciation showed that Zn is neither transported as ZnSO4(aq) nor as Zn-EDTA(aq), indicating that these compounds are retained in the roots or biotransformed on in the root-solution interface. Zn2+ was long-distance transported complexed by organic mols. such as histidine, malate, and citrate, and the proportion of ligands was affected by the concentration of Zn2+ in the stem rather than by the type of Zn source.

Plant Science (Shannon, Ireland) published new progress about Glycine max. 97-67-6 belongs to class alcohols-buliding-blocks, name is (S)-2-hydroxysuccinic acid, and the molecular formula is C4H6O5, Related Products of alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Wu, Shuang published the artcileHenry’s Law Constants and Indoor Partitioning of Microbial Volatile Organic Compounds, SDS of cas: 111-87-5, the main research area is Henry law indoor microbial volatile organic compound partitioning modeling; Henry’s law constant; chemical exposure; chemical partitioning; equilibrium partitioning; indoor air quality; indoor environment; microbial volatile organic compounds.

Microbial volatile organic compounds (MVOCs) play an essential role in many environmental fields, such as indoor air quality. Long-term exposure to odorous and toxic MVOCs can neg. affect the health of occupants. Recently, the involvement of surface reservoirs in indoor chem. has been realized, which signifies the importance of the phase partitioning of volatile organic pollutants. However, reliable partition coefficients of many MVOCs are currently lacking. Equilibrium partition coefficients, such as Henry’s law constant, H, are crucial for understanding the environmental behavior of chems. This study aims to exptl. determine the H values and their temperature dependence for key MVOCs under temperature relevant to the indoor environment. The H values were determined with the inert gas-stripping (IGS) method and variable phase ratio headspace (VPR-HS) technique. A two-dimensional partitioning model was applied to predict the indoor phase distribution of MVOCs and potential exposure pathways to the residences. The findings show that the MVOCs are likely distributed between the gas and weakly polar (e.g., organic-rich) reservoirs indoors. Temperature and the volume of reservoirs can sensitively affect indoor partitioning. Our results give a more comprehensive view of indoor chem. partitioning and exposure.

Environmental Science & Technology published new progress about Henry’s law. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, SDS of cas: 111-87-5.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Morales, M. L. published the artcileVolatile metabolites produced by different flor yeast strains during wine biological ageing, Category: alcohols-buliding-blocks, the main research area is volatile metabolite yeast strain wine biol aging; Flor yeast; GC-MS analysis; Heatmap; Sherry wine; Volatile compound.

Sherry white wine called Fino is produced by dynamic biol. ageing under the action of flor yeasts using traditional practices aimed at ensuring uniform quality and characteristics over time. These kinds of yeasts provide typical sensory properties to Fino wines. Although there are studies of the volatile composition of these wines submitted to biol. ageing in wood barrels, there is a lack of knowledge on the particular volatile profile produced by different flor yeast strains from Sherry zone wineries. For this reason, the aim of this study was to analyze the volatile profiles produced by 15 pure culture flor velum yeasts, with the goal of observing their suitability for obtaining high quality Fino sherry wines. Volatile composition was determined by dual sequential stir bar sorptive extraction, followed by GC-MS anal. All yeast strains studied produced the increase of most acetals, highlighting acetaldehyde diethylacetal which was the compound that most increased. Among terpenes, nerolidol and farnesol underwent remarkable increases. However, results showed that in a month of biol. ageing, significant differences were observed among the volatile metabolites produced by flor yeast strains studied. Only some of them stood out for their high production of volatile compounds characteristic of Sherry Fino wines, which are good candidates for producing starter cultures.

Food Research International published new progress about Metabolites. 505-10-2 belongs to class alcohols-buliding-blocks, name is 3-(Methylthio)propan-1-ol, and the molecular formula is C4H10OS, Category: alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Sa’adiyah, Devy Setiorini published the artcileSpatial Evolution of CO2-Contaminated Water Bubble Flows in a Vertical Pipe, COA of Formula: C8H18O, the main research area is carbon dioxide contaminated water bubble flow vertical pipe.

Experiments on CO2-water bubble flows in a vertical pipe were carried out for clean water, an aqueous NaCl solution, and an aqueous NaCl solution with 1-octanol to obtain databases of spatial evolutions of the flows with the impurities. Mass transfer correlations for bubbles in these liquids were implemented into a one-way bubble tracking method. Numerical predictions of the spatial evolution, e.g., transition from a bubbly to a slug flow, depending on the impurities agreed well with the experiments

Chemie Ingenieur Technik published new progress about Bubble flow. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, COA of Formula: C8H18O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Hippmann, Anna A. published the artcileProteomic analysis of metabolic pathways supports chloroplast-mitochondria cross-talk in a Cu-limited diatom, Application of (S)-2-hydroxysuccinic acid, the main research area is proteome copper metabolism signaling mitochondria chloroplast oxidative stress Thalassiosira; Cu limitation; copper; cross‐talk; diatom; proteomics.

Diatoms are one of the most successful phytoplankton groups in our oceans, being responsible for over 20% of the Earth’s photosynthetic productivity. Their chimeric genomes have genes derived from red algae, green algae, bacteria, and heterotrophs, resulting in multiple isoenzymes targeted to different cellular compartments with the potential for differential regulation under nutrient limitation. The resulting interactions between metabolic pathways are not yet fully understood. We previously showed how acclimation to Cu limitation enhanced susceptibility to overredn. of the photosynthetic electron transport chain and its reorganization to favor photoprotection over light harvesting in the oceanic diatom Thalassiosira oceanica (Hippmann et al., 2017, 10.1371/journal.pone.0181753). In order to gain a better understanding of the overall metabolic changes that help alleviate the stress of Cu limitation, we have further analyzed the comprehensive proteomic datasets generated in that study to identify differentially expressed proteins involved in carbon, nitrogen, and oxidative stress-related metabolic pathways. Metabolic pathway anal. showed integrated responses to Cu limitation. The upregulation of ferredoxin (Fdx) was correlated with upregulation of plastidial Fdx-dependent isoenzymes involved in nitrogen assimilation as well as enzymes involved in glutathione synthesis, thus suggesting an integration of nitrogen uptake and metabolism with photosynthesis and oxidative stress resistance. The differential expression of glycolytic isoenzymes located in the chloroplast and mitochondria may enable them to channel both excess electrons and/or ATP between these compartments. An addnl. support for chloroplast-mitochondrial cross-talk is the increased expression of chloroplast and mitochondrial proteins involved in the proposed malate shunt under Cu limitation.

Plant Direct published new progress about Chloroplast. 97-67-6 belongs to class alcohols-buliding-blocks, name is (S)-2-hydroxysuccinic acid, and the molecular formula is C4H6O5, Application of (S)-2-hydroxysuccinic acid.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Igamberdiev, Abir U. published the artcileCitrate valve integrates mitochondria into photosynthetic metabolism, Product Details of C4H6O5, the main research area is review citrate mitochondria photosynthetic metabolism; Citrate hemicycle; Citrate valve; Isocitrate dehydrogenase; Malate valve; Plant mitochondria; Redox regulation; Thermodynamic buffering.

While in heterotrophic cells and in darkness mitochondria serve as main producers of energy, during photosynthesis this function is transferred to chloroplasts and the main role of mitochondria in bioenergetics turns to be the balance of the level of phosphorylation of adenylates and of reduction of pyridine nucleotides to avoid over-energization of the cell and optimize major metabolic fluxes. This is achieved via the establishment and regulation of local equilibrium of the tricarboxylic acid (TCA) cycle enzymes malate dehydrogenase and fumarase in one branch and aconitase and isocitrate dehydrogenase in another branch. In the conditions of elevation of redox level, the TCA cycle is transformed into a non-cyclic open structure (hemicycle) leading to the export of the tricarboxylic acid (citrate) to the cytosol and to the accumulation of the dicarboxylic acids (malate and fumarate). While the buildup of NADPH in chloroplasts provides operation of the malate valve leading to establishment of NADH/NAD+ ratios in different cell compartments, the production of NADH by mitochondria drives citrate export by establishing conditions for the operation of the citrate valve. The latter regulates the intercompartmental NADPH/NADP+ ratio and contributes to the biosynthesis of amino acids and other metabolic products during photosynthesis.

Mitochondrion published new progress about Chloroplast. 97-67-6 belongs to class alcohols-buliding-blocks, name is (S)-2-hydroxysuccinic acid, and the molecular formula is C4H6O5, Product Details of C4H6O5.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts