Category: 111-11-5

Facanha, Rafaela Vieira published the artcileCombined application of ethylene and 1-methylcyclopropene on ripening and volatile compound production of ‘Golden’ papaya, Safety of Methyl octanoate, the main research area is papaya ethylene methylcyclopropene ripening volatile compound.

Papaya (Carica papaya L.) fruit are consumed worldwide, but they are highly perishable. The effects of the application of 1-methylcyclopropene (1-MCP) with and without ethylene on ‘Golden’ papaya ripening and production of volatile compounds responsible for aroma. Fruit were treated with 2.5 μl L-1 ethylene and/or 100 nL L-1 of 1-MCP for 12 h as follows: I) control, II) ethylene, III) 1-MCP, IV) ethylene + 1-MCP (simultaneous), V) ethylene followed by application of 1-MCP at a 12 h interval and VI) ethylene + 1-MCP without any interval. Pulp firmness, skin color, skin chlorophyll content, skin and pulp carotenoids, ethylene production, respiratory activity, internal ethylene concentration (IEC), pectin Me esterase (PME) activity, 1-carboxylic acid-1-aminocyclopropane oxidase (ACC oxidase) activity and volatile compounds were measured. Fruit were stored at 22 °C, with anal. of volatile compounds performed until day 8 and all others until day 6. Fruit treated with only 1-MCP developed rubberized pulp. Fruit treated simultaneously with ethylene and 1-MCP reached desirable firmness for consumption by day 6. Co-application of 1-MCP + ethylene promoted chlorophyll degradation A consistent increase in ethylene production in 1-MCP-treated fruit above those observed in control fruit and in fruit treated with ethylene only was observed In relation to volatile compounds, linalool and its oxides were affected less by 1-MCP treatment, with or without ethylene, on days 2 and 6, and did not affect fruit flavor.

Postharvest Biology and Technology published new progress about Carica papaya. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Safety of Methyl octanoate.

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

Prabhu, C. published the artcileCharacterisation and assessment of physicochemical properties of grapeseed methyl ester using predictive correlations and ASTM standards for CI engine application, Category: esters-buliding-blocks, the main research area is grape seed methyl ester physicochem property CI engine application.

In the present work, a detailed investigation of the physio-chem. characteristics of grapeseed Me ester (GSME) obtained from winery biomass waste has been carried out to evaluate its suitability as an energy alternate, for CI engines. GSME was subjected to Gas chromatog. and mass spectrometry anal. from which fatty acids compositions were determined followed by other interpretations such as carbon number, number of double bonds, etc. Two different predictive correlations were identified from the literature for predicting the properties that are considered important, for using GSME as a fuel. The predicted properties of GSME are compared with the exptl. results obtained through standard ASTM procedures, for diesel, neat grapeseed oil (GSO) and GSME, resp. Further, the influence of the structural and compositional characteristics of GSME on the physicochem. properties like d., kinematic viscosity, lower calorific value, etc. has been evaluated and found to be closer to diesel.

Nature, Environment and Pollution Technology published new progress about Cetane number. 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

Savchenko, Lesia published the artcileDetermination and comparison of fatty acids composition of apricot and peach oils, Related Products of esters-buliding-blocks, the main research area is methylhexanoate fatty acid apricot peach oil.

Apricot and peach oils are often found in pharmaceutical dosage forms. They can be purchased from different manufacturers, which use various approaches for their standardization. The main determinant of any quality oil is represented by fatty acids (FA). Therefore, determination and comparison of FA composition of these oils and assessment of their storage period influence on it were performed. FA composition was determined by gas chromatog. using specific Rt-2560 column and Supelco 37 Component FAME Mix. 26 FA in apricot and 28 FA in peach oil samples were identified. Oleic (67.21% in apricot oil; 63.29% in peach oil) and linoleic (22.13% in apricot oil; 25.40% in peach oil) acids were characterized by the highest average concentration in both oils. Among saturated FA, palmitic acid was the first (5.87% in apricot oil; 5.95% in peach oil) and stearic acid was the second (2.08% in apricot oil; 2.92% in peach oil). Total saturated fatty acids (TSFA) and total unsaturated fatty acids (TUFA) values also didn’t have significant differences. The oils have close composition, despite various expiration dates and manufacturers.

Farmacia (Bucharest, Romania) published new progress about Apricot (oil). 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Related Products of esters-buliding-blocks.

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

Salama, El-Sayed published the artcileEnhanced anaerobic co-digestion of fat, oil, and grease by calcium addition: Boost of biomethane production and microbial community shift, Safety of Methyl octanoate, the main research area is grease anaerobic digestion calcium biomethane Firmicutes Sedimentibacter Methanosaeta; Anaerobic co-digestion; Biomethane; Calcium pretreatment; Fat, oil, and grease; Microbial community.

This work focused on the application of calcium (0.1-1% w/v) to overcome the inhibition caused by the high loadings (2% volume/volume) of fat, oil, and grease (FOG) in the context of biomethane production, organic removal, and microbial community shift. Addition of 0.5% calcium showed maximum biomethane production (6-fold increase); biomethane production decreased following the addition of calcium (>0.5%). The highest organic removal rates were 83 and 89% upon the addition of 0.3 and 0.5% calcium, resp. Addition of calcium facilitated the growth of bacteria of phylum Firmicutes from the Clostridium, Syntrophomonas, and Sedimentibacter genera. The population of members from the genus Methanosaeta increased after the addition of 0.5% calcium, which is one of the factors responsible for high biomethane production This study demonstrated that addition of calcium is an attractive strategy to avoid the inhibition of the growth of anaerobic microflora due to the presence of high FOG concentrations

Bioresource Technology published new progress about Bacteroidetes. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Safety of Methyl octanoate.

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

Sk, Ramiz Islam published the artcileLipidomic analysis of cancer cell and tumor tissues, HPLC of Formula: 111-11-5, the main research area is lipidomic analysis cancer cell tumor tissue; Cancer; Fatty acid methyl ester; GC-MS; Lipidomics; RP-UPLC-ESIMS.

Due to their role in cellular structure, energetics, and signaling, characterization of changes in cellular and extracellular lipid composition is of key importance to understand cancer biol. In addition, several mass spectrometry-based profiling as well as imaging studies have indicated that lipid mols. may be useful to augment existing biochem. and histopathol. methods for diagnosis, staging, and prognosis of cancer. Therefore, anal. of lipidomic changes associated with cancer cells and tumor tissues can be useful for both fundamental and translational studies. Here, we provide a high-throughput single-extraction based method that can be used for simultaneous lipidomic and metabolomic anal. of cancer cells or healthy or tumor tissue samples. In this chapter, a modified Bligh-Dyer method is described for extraction of lipids followed by anal. of fatty acid composition by gas chromatog.-mass spectrometry (GC-MS) or untargeted lipidomics using electrospray ionization mass spectrometry (ESIMS) coupled with reversephase (RP) ultraperformance liquid chromatog. (UPLC) followed by multivariate data anal. to identify features of interest.

Methods in Molecular Biology (New York, NY, United States) published new progress about Animal tissue. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, HPLC of Formula: 111-11-5.

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

Zimmermann, Lisa published the artcileBenchmarking the in Vitro Toxicity and Chemical Composition of Plastic Consumer Products, SDS of cas: 111-11-5, the main research area is toxicity chem composition plastic consumer product.

Plastics are known sources of chem. exposure and few, prominent plastic-associated chems., such as bisphenol A and phthalates, have been thoroughly studied. However, a comprehensive characterization of the complex chem. mixtures present in plastics is missing. In this study, we benchmark plastic consumer products, covering eight major polymer types, according to their toxicol. and chem. signatures using in vitro bioassays and non-target high resolution mass spectrometry. Most (74 %) of the 34 plastic extracts contained chems. triggering at least one endpoint, including baseline toxicity (62 %), oxidative stress (41 %), cytotoxicity (32 %), estrogenicity (12 %) and antiandrogenicity (27 %). In total, we detected 1411 features, tentatively identified 213, including monomers, additives and non-intentionally added substances, and prioritized 25 chems. Extracts of polyvinyl chloride (PVC) and polyurethane (PUR) induced the highest toxicity whereas polyethylene terephthalate (PET) and high-d. polyethylene (HDPE) caused no or low toxicity. High baseline toxicity was detected in all “”bioplastics”” made of polylactic acid (PLA). The toxicities of low-d. polyethylene (LDPE), polystyrene (PS) and polypropylene (PP) varied. Our study demonstrates that consumer plastics contain compounds that are toxic in vitro but remain largely unidentified. Since the risk of unknown compounds cannot be assessed, this poses a challenge to manufacturers, public health authorities and researchers alike. However, we also demonstrate that products not inducing toxicity are already on the market.

Environmental Science & Technology published new progress about Antiandrogens. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, SDS of cas: 111-11-5.

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

Hu, Yingying published the artcileTechnological characterization and flavor-producing potential of lactic acid bacteria isolated from traditional dry fermented sausages in northeast China, Application of Methyl octanoate, the main research area is lactic acid bacteria dry fermented sausage flavor antimicrobial China; Autochthonous microbiota; Flavor profile; Meat products; Partial least squares regression analysis; Technological characterization.

Thirty-seven lactic acid bacteria (LAB) strains were isolated from traditional dry sausages collected from Northeast China, including Latilactobacillus sakei (29 strains), Lactiplantibacillus plantarum (4 strains), Latilactobacillus curvatus (2 strains), Weissella hellenica (1 strain), and Lactococcus lactis (1 strain). Some LAB strains had tolerance to high concentrations of sodium chloride (6%), sodium nitrite (150 mg/L NaNO2), and acid (pH 4.0). They showed good growth and acidification properties and antimicrobial activity. Among them, five LAB strains that exhibited the best technol. properties were selected and inoculated in the sausage model to explore their roles in flavor development. The contents of total free amino acids (FAAs) decreased ranging from 109.11 mg/g to 58.06 mg/g. A total of 46 volatile compounds were identified and the contents of volatile compounds increased in the sausage model during fermentation Partial least squares regression anal. showed that Lb. sakei HRB10, Lb. plantarum MDJ2, W. hellenica HRB6, and Lc. lactis HRB0 promoted the generation of FAAs and volatile compounds in the sausage model. These findings demonstrated that the autochthonous LAB species are promising for the production of sausage with better flavor and fermentation performance.

Food Microbiology published new progress about Acidification. 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

Han, Shucui published the artcileNovel self-solidifying double-site acidic ionic liquid as efficient and reusable catalyst for green biodiesel synthesis, Application of Methyl octanoate, the main research area is bisdiphenylphosphinoethane propanesulfonate catalyst fatty acid methanol esterification biodiesel production.

In this work, two double-site acidic ionic liquids were synthesized by a two-step method via the reaction of 1,2-bis(diphenylphosphino) ethane (DPhPE) with 1,3-propanesulfonate (PS) to form a DPhPE-PS zwitterion followed by acidification with different acids. The obtained ionic liquids were characterized and further used as catalyst for the esterification of various free fatty acids with methanol to produce biodiesel. The suitable self-solidifying double-site acidic ionic liquid [DPhPE-PS][HSO4]2 is homogeneous catalytic due to its solubility during the esterification, which is precipitated after reaction. The evaporation of the residual methanol and generated water combines the advantages of homogeneous and heterogeneous catalysts, including their excellent catalytic activity and convenient recovery. [DPhPE-PS][HSO4]2 exhibits 98.65% of oleic acid conversion under operating appropriate conditions optimized by response surface methodol. (catalyst dosage of 6.0 wt%, molar ratio of methanol to oleic acid of 10.0:1, reaction temperature of 60.0 °C, and reaction time of 4.0 h) and keeps outstanding catalytic performance after 9 cycles. Moreover, [DPhPE-PS][HSO4]2 also displays excellent catalytic activity and good versatility in the esterification of various free fatty acids to biodiesel. Hence, the self-solidifying double-site acidic ionic liquid [DPhPE-PS][HSO4]2 can be used as an environmentally friendly and efficient catalyst for synthesis of biodiesel via esterification.

Fuel published new progress about Acidification. 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

Lv, Yichao published the artcileThe prediction of specific spoilage organisms in Harbin red sausage stored at room temperature by multivariate statistical analysis, Formula: C9H18O2, the main research area is Harbin red sausage temperature multivariate statistical analysis.

The bacterial succession, physicochem. properties and volatile organic compounds (VOCs) of palletizing Harbin red sausage during a 12-day storage at 20°C were monitored in this study. According to the results of high-throughput sequencing, 13 core dominant bacteria were identified, and Staphylococcus became the most predominant bacteria after 6 d of storage. Addnl., the physicochem. properties changed significantly, which was shown by a decrease in the a*-value, L*-value, toughness and whole hardness and an increase in the b*-value, ΔE and thiobarbituric acid reactive substance. A total of 69 key VOCs were identified from 166 VOCs during storage. According to a Pearson’s correlation between core dominant bacteria and VOCs, Staphylococcus, Acinetobacter, Psychrobacter, Streptococcus, Allorhizobium, Pseudomonas and Gossypium_arboreum were pos. related to 32 VOCs, such as 3-methyl-1-butanol, 1-pentanol and 1-octen-3-ol, and could be defined as specific spoilage organisms (SSOs). This study provides a systematic method for understanding the changes in bacterial succession, physicochem. properties and VOCs and predicting SSOs of Harbin red sausages during storage.

Food Control published new progress about Acinetobacter. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Formula: C9H18O2.

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

Onoda, Mitsuki published the artcileDehydrogenative Esterification and Dehydrative Etherification by Coupling of Primary Alcohols Based on Catalytic Function Switching of an Iridium Complex, Application of Methyl octanoate, the main research area is primary alc iridium catalyst dehydrogenative esterification green chem; ester preparation; alc iridium catalyst dehydrative esterification green chem; ether preparation.

In this study, a new catalytic function switching system: not only dehydrogenative esterification but also dehydrative etherification under environmentally friendly conditions were accomplished by the employment of a single iridium catalyst based on catalytic function switching was successfully developed. Using benzyl alc. as a starting material, the esterification product, benzyl benzoate, and the etherification product, dibenzyl ether, were obtained in 92% and 89% yields, resp., by employing same iridium catalyst precursor bearing a dihydroxybipyridine ligand, under optimized conditions.

ChemistrySelect published new progress about Esterification. 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