Category: 111-11-5

Han, Ge published the artcileImpacts of different altitudes and natural drying times on lipolysis, lipid oxidation and flavour profile of traditional Tibetan yak jerky, Quality Control of 111-11-5, the main research area is lipid oxidation lipolysis volatile compound physicochem property; Free fatty acids; Sensory characteristics; Volatile compounds; Yak jerky.

The impact of different altitudes on the physicochem. properties, lipolysis, lipid oxidation, volatile compound formation and sensory evaluation of traditional Tibetan dried yak jerky during natural drying was investigated. High altitude (HA) yak jerky showed higher percentages of unsaturated fatty acids and thiobarbituric acid reactive substances than low altitude (LA) yak jerky during natural drying (P < 0.05). The percentages of polyunsaturated fatty acids and monounsaturated fatty acids decreased during natural drying, whereas that of saturated fatty acids increased (P < 0.05). A total of 54 volatile compounds were identified and quantified, and there were higher contents of volatile compounds in HA yak jerky than in LA jerky, which were mainly derived from lipid oxidation Principal component anal. showed that the volatile compounds associated with the highest overall acceptability in HA yak jerky were hexanal, nonanal, (E)-2-nonenal, 1-hexanol, 2-heptanone, 2-methyl-3-octanone and 6-methyl-5-hepten-2-one. The volatile compounds associated with the highest overall acceptability for yak jerky with a longer natural drying time were hexane, 1-octanol, 2-ethylhexanol, heptanal, (E)-2-hexenal, (E)-2-octenal, 1-octen-3-ol and 2,3-octanedione. According to the sensory evaluations, HA yak jerky with a natural drying time of 75 d tends to be more popular. Meat Science published new progress about Lipid oxidation. 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

Arguelles, Eldrin DLR. published the artcileLipid accumulation and profiling in microalgae Chlorolobion sp. (BIOTECH 4031) and Chlorella sp. (BIOTECH 4026) during nitrogen starvation for biodiesel production, Related Products of esters-buliding-blocks, the main research area is Chlorolobion Chlorella lipid accumulation nitrogen starvation biodiesel.

When the amount of nitrate was limited, the mean oil contents of Chlorolobion sp. and Chlorella sp. were 31.61 and 28.77% with lipid productivity of 227.84 and 151.14 mg L-1 day-1, resp. Nitrogen starvation caused an increase in the lipid yield and a decrease in biomass production of the two microalgae. The FAME profile of the obtained algal biodiesel shows a high concentration of saturated fatty acid (SAFA) and monounsaturated fatty acid (MUFA) Me esters which are desirable for biodiesel production The fuel properties of biodiesel from the two microalgae were predicted based on the mol. properties of fatty acid Me esters using empirical equations showing that the biodiesel properties of the two microalgae satisfied the set specifications of biodiesel standards EN 14214 (European) and ASTM D6751 (American). The quality properties of biodiesel obtained for Chlorolobion sp. were low d. (0.89 g cm-3), low kinematic viscosity (2.79 mm2 s-1), cetane number (65.17), and oxidation stability (8.93 h). On the other hand, Chlorella sp. has low d. (0.88 g cm-3), low kinematic viscosity (2.78 mm2 s-1), good cetane number (68.79), and oxidation stability (10.44 h). Hence, Chlorolobion sp. (BIOTECH 4031) and Chlorella sp. (BIOTECH 4026) have potential as raw material for production of biodiesel with superior fuel quality.

Journal of Applied Phycology published new progress about Bioaccumulation. 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

Luo, Manli published the artcileEffect of Glycine Betaine Treatment on Aroma Production of ‘Nanguo’ Pears After Long-Term Cold Storage-Possible Involvement of Ethylene Synthesis and Signal Transduction Pathways, Recommanded Product: Methyl octanoate, the main research area is glycine betaine ethylene aroma nanguo storage signal transduction pathway.

Glycine betaine (GB) treatment is considered effective in preventing low ester production in cold-stored ‘Nanguo’ pears (Pyrus ussuriensis Maxim.). Here, the mechanism of GB on ethylene biosynthesis and signal transduction to accelerate esters accumulation was investigated. We observed a higher ethylene production in GB-treated ‘Nanguo’ pears than that in controls. Genes directly related to ethylene biosynthesis (PuACO1, PuACO2, and PuACS) and ethylene response factors (PuERF2, PuERF109-like, PuERF071-like, PuERF015, PuERF114, PuRAV1-like, and PuERF113-like) were upregulated during cold storage and subsequent shelf at room temperature, and pos. contributed to biosynthesis of esters. Moreover, it was found that pears treated with GB increased the content of GB by improving the activity and expression of choline monooxygenase and betaine dehydrogenase, whereas high GB content was pos. correlated with high ethylene production Collectively, these results suggested that triggering of the biosynthesis of ethylene and signal transduction pathways may be the mechanism responsible for the conservation of esters by GB treatment.

Food and Bioprocess Technology published new progress about Bioaccumulation. 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

Shahidah, A. Adamu published the artcileComparative amino acid and volatile flavor profile of dawadawa produced from the seeds of P. biglobosa, G. max and H. sabdariffa, Application of Methyl octanoate, the main research area is Parkia Glycine Hibiscus seed dawadawa amino acid flavor fermentation.

A comparative anal. of free amino acid and volatile organic compounds profile of dawadawa produced from the seeds Parkia biglobosa, Glycine max and Hibiscus sabdariffa was evaluated. The free amino acid profile were analyzed using amino acid analyzer while the volatile organic compound profile were analyzed using Gas -Chromatog.-Mass Spectrometry (GC-MS). Difference was observed in the amino acid profile of the dawadawa with laboratory produced dawadawa recording an increased in the essential amino acid lysine, valine, methionine and leucine while tyrosine been the only non-essential amino acid that slight increased. Aspartic and glutamic acids seems to be the major amino acids in locally produced dawadawa with a value of 9.00 and 17.26 g/100 g protein. Fermentation increased the bioavailability of aspartic acid (9.00 to 9.31 g/100 g protein) while the glutamic acid decreased from 17.26 to 14.38 g/100 g protein after fermentation under laboratory conditions. The locally and laboratory produced dawadawa from G. max, the laboratory produced dawadawa showed increased in the six essential amino acid. The essential amino acid leucine and non-essential amino acids aspartic and glutamic acid are identified as the major amino acids in locally produced dawadawa from locust bean. The locally produced dawadawa from H. sabdariffa had the highest amino acid for lysine, valine glutamic acid and proline while threonine was the same in both local and laboratory produced. The locally and laboratory fermented seeds of P. biglobosa showed several volatile compounds in both dawadawa with locally produced dawadawa having 21 volatile organic compounds while dawadawa produced in the laboratory had 24 volatile organic compounds The G. max produced dawadawa had 6 esters, 5 amides, 4 acids, 3 alcs., 2 hydrocarbons and one heterocyclic compound The volatile organic flavor compounds detected in dawadawa produced from H. sabdariffa seeds include 2 acids class flavor volatile, 1 alcs., 2 aldehydes, 2 ketones, 2 amides, 4 carbonyl, 8 esters, 8 hydrocarbons and 1 phenol. The free amino acid and volatile profile varied between the laboratory and locally produced dawadawa from the three seeds.

Journal of Advances in Microbiology published new progress about Bioavailability. 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

El Majdoub, Yassine Oulad published the artcileChemical characterization of three accessions of Brassica juncea L. extracts from different plant tissues, Application In Synthesis of 111-11-5, the main research area is chem composition root stem leaf Brassica; Brassica juncea spp.; GC; HPLC; foods; metabolites; non-volatile; nutraceuticals; volatile.

Indian mustard or Brassica juncea (B. juncea) is an oilseed plant used in many types of food (as mustard or IV range salad). It also has non-food uses (e.g., as green manure), and is a good model for phytoremediation of metals and pesticides. In recent years, it gained special attention due to its biol. compounds and potential beneficial effects on human health. In this study, different tissues, namely leaves, stems, roots, and flowers of three accessions of B. juncea: ISCI 99 (Sample A), ISCI Top (Sample B), and “”Broad-leaf”” (Sample C) were analyzed by HPLC-PDA/ESI-MS/MS. Most polyphenols identified were bound to sugars and phenolic acids. Among the three cultivars, Sample A flowers turned were the richest ones, and the most abundant bioactive identified was represented by Isorhamnetin 3,7-diglucoside (683.62 μg/100 mg dry weight (DW) in Sample A, 433.65 μg/100 mg DW in Sample B, and 644.43 μg/100 mg DW in Sample C). In addition, the most complex samples, viz. leaves were analyzed by GC-FID/MS. The major volatile constituents of B. juncea L. leaves extract in the three cultivars were benzenepropanenitrile (34.94% in Sample B, 8.16% in Sample A, 6.24% in Sample C), followed by benzofuranone (8.54% in Sample A, 6.32% in Sample C, 3.64% in Sample B), and phytone (3.77% in Sample B, 2.85% in Sample A, 1.01% in Sample C). The overall evaluation of different tissues from three B. juncea accessions, through chem. anal. of the volatile and non-volatile compounds, can be advantageously taken into consideration for future use as dietary supplements and nutraceuticals in food matrixes.

Molecules published new progress about Brassica juncea. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Application In Synthesis of 111-11-5.

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

Taghizadehfard, Mahsa published the artcileViscosity modeling of fatty acid esters and biodiesels based on friction theory and perturbed hard-dimer-chain equation of state, Application of Methyl octanoate, the main research area is fatty acid ester biodiesel friction theory viscosity PHDC EOS.

This work deals with the modeling of dynamic viscosities of several fatty acid esters (FAEs) and biodiesels based on the friction theory (FT) along with a perturbed hard-dimer-chain equation of state (PHDC EOS). The model used three mol. parameters (ε, σ, m) and liquid d. as well, all of which were estimated from the PHDC EOS. The PHDC EOS could predict the d. and isothermal compressibility coefficients in 278.15-393.15 K range and pressures up to 210 MPa with the average absolute relative deviations (AARDs) of 0.52% and 4.77%, resp. Then, the proposed FT-based model has been employed for predicting the dynamic viscosities of several FAEs and biodiesels in 293.15-393.15 K and pressures up to 200 MPa. The model predicted 892 exptl. data points for dynamic viscosities of 10 FAEs and 3 biodiesels with the AARD of 1.70%. Further, the degree of accuracy of proposed model has also been compared with some semi-theor. and empirical approaches. Our comparison results revealed the superiority of the proposed model against the literature approaches.

Journal of Molecular Liquids published new progress about Avogadro number. 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

Rasulov, Suleiman M. published the artcilePpT and liquid-gas phase transition properties (PS,pS,TS) of binary n-hexane + methyl octanoate mixture near the critical point of pure n-hexane, Recommanded Product: Methyl octanoate, the main research area is hexane methyl octanoate binary mixture liquid gas phase transition.

PρT and phase transition properties (PS,ρS,TS) of the dilute binary mixture of n-hexane + Me octanoate have been studied near the critical point of pure n-hexane (solvent). The measurements were performed along 11 liquid, vapor and near-critical isochores between (39.3 and 621.1) kg·m-3 over a temperature range from (293 to 622) K at pressures up to 17.7 MPa for the fixed concentration of x = 0.088 mol fraction (or 0.05 mass fraction) of Me octanoate. The measurements were made using a constant-volume piezometer technique. The study was concentrated in the single – and two- phase regions near the critical point of pure n-hexane to precisely determine the phase boundary properties (PS,ρS,TS) and the critical property (PC,ρC,TC) data of the mixture The measured critical property data for the mixture were used to study of the isomorphic critical behavior of strongly singular properties such as isothermal compressibility KTX and isobaric heat capacity CPX along the critical isochore and the critical isotherm, i.e., Fisher renormalization (mixture-like behavior) of the critical exponent, -γγ/(1 – α), for strongly singular properties of mixture under study. The measured PρT data were also used to estimate the values of phys. meaningful (theor. important) parameters such as characteristic reduced temperature τ1and d. differences Δρ1 of the mixture We found that KTX and CPX of the studied mixture exhibit pure-like behavior along the critical isochore at temperature above 508.52 K (slightly above the critical temperature of pure n-hexane, 507.44 K) and along the critical isotherm at densities above 279.82 kg·m-3 (above the critical d. of pure n-hexane, 232.8 kg·m-3). The measured data were used to estimate the Krichevskii parameter Kkr,structural (Nexc)and volumetric (Vâˆ?) properties of the dilute mixture near the critical point of pure solvent (n-hexane).

Fluid Phase Equilibria published new progress about Binary mixtures. 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

Xiao, Zuobing published the artcileIdentification of key aromas of Chinese muskmelon and study of their formation mechanisms, Computed Properties of 111-11-5, the main research area is Chinese muskmelon formation mechanism key aroma identification.

The volatile compounds found in melons (Cucumis melo L.) obtained from three cultivars [Jiashi (JS), Xizhoumi17 (XZM) and Minqin (MQ)] were comprehensively analyzed by gas chromatog.-olfactometry (GC-O), gas chromatog.-mass spectrometry (GC-MS), and GC-flame photometric detection (GC-FPD). The result showed that 46, 45 and 69 volatile compounds were detected in XZM, JS and MQ samples by GC-MS, resp. Besides, 6, 8 and 9 sulfur compounds were detected by GC-FPD, resp. Di-Me sulfide, 1-propanethiol, 3-mercapto-3methylbutanol, 3-methyl-2-buten-1-thiol were detected for the first time in melon. 25 key aroma compounds were identified in MQ muskmelon by omission tests, among which (Z)-6-nonenal, (Z)-6-nonen-1-ol, 3-methylbutanal, 2-methylbutyl acetate, hexanal and Me thioacetate were particularly important. The interaction between three aroma compounds containing nine-carbon straight-chain structure and five thioesters in MQ muskmelon was studied by comparing their olfactory threshold and OAV values. Among the 18 binary mixtures, 8 mixtures showed a synergistic effect, 2 mixtures presented an additive effect, 2 mixtures showed no interaction, 6 mixtures exhibited a masking effect. There is a synergistic effect between (Z)-6-nonenal, (Z)-6-nonen-1-ol and (E, Z)-3,6-nonadien-1-ol, the aroma intensity of the mixture can be predicted by modified vector model.

European Food Research and Technology published new progress about Binary mixtures. 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

Owen, Rhodri N. published the artcileTowards a universal ion source: Glow Flow mass spectrometry, Synthetic Route of 111-11-5, the main research area is ion source glow flow mass spectrometry.

A helium-microplasma ion source (Glow Flow) has been developed and characterised. It is engineered to be a simple design, of low-cost and can be readily retrofitted to most modern mass spectrometers. Initial assessment of its performance has shown it to be robust, reproducible and of high sensitivity. Glow Flow provides broad non-specific detection of samples from polar through to non-polar chemistries making it of wide utility. A study of persistent organic pollutants, polyaromatic hydrocarbons, low average-mol.-mass polymers (polyethyleneimine, polyethylene glycol, and polypropylene glycol) and a complex mixture of fatty-acid Me esters by direct sample introduction using a nebulised heated nitrogen flow was conducted. The ability to make quant. measurement was investigated using Me stearate and a linear calibration plot gave a R2 = 0.999 and limit-of-detection of �00 fmol. This design is extremely stable, in operation. Typical ions commonly observed are intense protonated mol. ions, radical mol. ions, hydride abstracted ions, and oxygen adduct ions. At present this system is valuable to apply to small mol. anal. (m/z < 1000), and is easily interfaced to gas and liquid chromatog., and likely to be useful for imaging. International Journal of Mass Spectrometry published new progress about Electric current. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Synthetic Route of 111-11-5.

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

Sun, Libin published the artcileBiosynthetic Mechanism of Key Volatile Biomarkers of Harvested Lentinula edodes Triggered by Spore Release, Synthetic Route of 111-11-5, the main research area is Lentinula spore volatile biomarker biosynthesis; Lentinula edodes; aroma biosynthesis; multivariate analysis; spore release; volatile biomarkers.

In this study, headspace solid-phase microextraction-gas chromatog.-mass spectrometry, multivariate analyses, and transcriptomics were used to explore the biosynthesis of key volatiles and the formation of spores in Lentinula (L.) edodes. Among the 50 volatiles identified, 1-octen-3-ol, phenethyl alc., and several esters were considered key aromas because of their higher odor activity values. Eleven volatiles were screened as biomarkers by orthogonal partial least squares discriminant anal., and hierarchical cluster anal. showed that these biomarkers could represent all volatiles to distinguish the spore release stage. The activities of lipoxygenase (LOX), hydroperoxide lyase, alc. dehydrogenase, and alc. acyltransferase were higher in L. edodes with spore release. Moreover, linolenic acid and phenylalanine metabolism were involved in aroma biosynthesis. One LOX-related gene and five aryl alc. dehydrogenase-related genes could regulate the biosynthesis of 1-octen-3-ol, phenethyl alc., and phenylacetaldehyde. In addition, several key genes were involved in meiosis to regulate sporulation.

Journal of Agricultural and Food Chemistry published new progress about Lentinula edodes. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Synthetic Route of 111-11-5.

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