Tag: M.W=150-200

Zhou, Xin published the artcileEffect of Intermittent Warming on Aroma-Related Esters of Nanguo Pears Through Regulation of Unsaturated Fatty Acid Synthesis After Cold Storage, HPLC of Formula: 111-11-5, the main research area is aroma related ester unsaturated fatty acid synthesis intermittent warming.

Abstract: Cold storage can effectively delay the ripening of Nanguo pears (Pyrus ussuriensis Maxim.). However, the aroma-related esters of Nanguo pears decreased after cold storage. In this study, we aimed to investigate the effect of intermittent warming (IW) treatment on the formation of aroma-related esters and unsaturated fatty acid synthesis from cold stored pears. IW-treated pears were exposed to 20 ± 1°C for 1 day every 20 days during storage at 0 ± 0.5°C, every 21 days was a cycle and a total of 90 days. The pears in control group were stored at 0 ± 0.5°C for 90 days. After this 90-day storage, both groups of pears (control and IW-treated) were transferred to a shelf life of 12 days at room temperature The results showed that, compared with the pears in control group, the productions of aroma-related esters and the expression levels of PuLOX1, PuADH3, and PuAAT1 in IW-treated pears were significantly higher during the shelf life (P < 0.05). We also found that the expression of PuFAD2 and PuFAD3 had significant pos. correlation with the contents of unsaturated fatty acids (P < 0.05). The significantly higher expression levels of PuFAD2 and PuFAD3 in IW-treated pears may have played an important role in the improvement of ester contents (P < 0.05). It could be inferred that IW treatment had an impact on the aroma-related esters of cold-stored Nanguo pears through regulation of unsaturated fatty acid synthesis. Food and Bioprocess Technology published new progress about Gene expression. 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

Su, Xueqian published the artcileAroma characterization of regional Cascade and Chinook hops (Humulus lupulus L.), HPLC of Formula: 111-11-5, the main research area is beta myrecene methyl octanoate geraniol linalool Humulus aroma quality; 2-Octanol (PubChem CID: 20083); Aroma chemistry; Aroma extract dilution analysis (AEDA); Gas chromatography-mass spectrometry-olfactometry (GC-MS-O); Geraniol (PubChem CID: 637566); Hops; Linalool (PubChem CID: 6549); Methyl octanoate (PubChem CID: 8091); Stable isotope dilution analysis (SIDA); Standard addition method (SAM); cis-β-Farnesene (PubChem CID: 5317319); α-Humulene (PubChem CID: 6508206); β-Caryophyllene (PubChem CID: 5281522); β-Myrcene (PubChem CID: 31253).

Aroma compounds in Cascade and Chinook hops harvested from multiple Virginia locations were identified by gas chromatog.-mass spectrometry-olfactometry (GC-MS-O) and aroma extract dilution anal. (AEDA). Selected aroma compounds were quantitated by combination of stable isotope dilution anal. (SIDA) and standard addition method (SAM). A total of 33 aroma-active compounds were detected in five samples with β-myrcene, Me octanoate, geraniol and linalool being the predominant compounds based on their high flavor dilution (FD) factors and odor activity values (OAVs). L-Calamenene and germacrene B was the major characteristic component unique to Cascade and Chinook variety, resp. Principal component anal. (PCA) showed distinctive aroma profiles for all samples except for Blacksburg and Petersburg Cascade. Hierarchical cluster anal. (HCA) reflected the higher contents of most aroma-active compounds in Meadow view Cascade and Chinook when compared to their counterparts. The significant variations suggested the potential influences of environmental factors and agronomic practices on hop aroma quality.

Food Chemistry published new progress about Humulus lupulus. 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

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

Du, Weibiao published the artcileDensity and viscosity for binary mixtures of methyl decanoate with 1-propanol, 1-butanol, and 1-pentanol, Category: esters-buliding-blocks, the main research area is methyl decanoate propanol butanol pentanol density viscosity molar volume.

In this work, the volumetric and viscometric properties of the mixtures of Me decanoate with 1-propanol, 1-butanol, and 1-pentanol were investigated from 298.15 K to 333.15 K. The d. data of the mixtures were obtained based on the vibrating-tube densimeter, and the kinematic viscosities of the mixtures were measured using the Ubbelohde capillary viscometer. Based on the exptl. data, the excess molar volumes and viscosity deviations were calculated and correlated with the Redlich-Kister equation. In addition, the McAllister four-body model, Frenkel model, Grunberg-Nissan model, and Heric’s model were used to correlate the viscosities of the mixtures

Journal of Molecular Liquids published new progress about Binary mixtures. 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Category: esters-buliding-blocks.

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

Zhao, Guanjia published the artcileExperiment and correlation of the thermophysical properties for binary and ternary liquid mixtures of three fatty acid ethyl esters and n-dodecane, Category: esters-buliding-blocks, the main research area is fatty acid ethyl ester dodecane binary mixture thermophys property.

In present study, surface light scattering (SLS) was used for the simultaneous determination of liquid surface tension and kinematic viscosity of the binary and ternary mixtures of three fatty acid Et esters (FAEEs) and n-dodecane. The SLS apparatus was firstly checked with n-dodecane and a good agreement between our data and those from literatures could be found. By utilizing this apparatus, both properties were investigated in the temperature ranges between (308 and 413) K. Addnl., the liquid d. and refractive index were determined by a densimeter between (293 and 423) K and a refractometer from (278 to 358) K, resp. The thermophys. property data obtained in this study were correlated as polynomial equations of temperature and mole fraction of the pure components. This work provided the crucial thermophys. properties and the corresponding models in connection with the application in the design and optimization of the injection system of internal combustion engine (ICE).

Journal of Molecular Liquids published new progress about Binary mixtures. 106-32-1 belongs to class esters-buliding-blocks, name is Ethyl octanoate, and the molecular formula is C10H20O2, Category: esters-buliding-blocks.

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

Fan, Jing published the artcileLiquid thermal conductivity of binary mixtures containing a diesel compound n-dodecane + biodiesel compounds: methyl caprate and ethyl caprate, COA of Formula: C11H22O2, the main research area is dodecane methyl ethyl caprate biodiesel compound liquid thermal conductivity.

Biodiesel which is comprising of Fatty Acid Me Esters (FAMEs) or Fatty Acid Et Esters (FAEEs) mixtures, has attracted tremendous attention as a potential renewable and biodegradable fuel in internal combustion engines, because of their beneficial effects on pollution emission and engine performance. In this work, the liquid thermal conductivity of two binary mixtures containing a diesel compound n-dodecane + biodiesel compounds: Me caprate and Et caprate was measured by means of transient hot-wire method at the teamperature range between 292 K and 362 K at atm. pressure. Based on the exptl. data of two binary mixtures, the correction about three useful correlations which are available to calculate the liquid thermal conductivity of mixtures have been conducted.

Thermochimica Acta published new progress about Binary mixtures. 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, COA of Formula: C11H22O2.

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, HPLC of Formula: 110-42-9, 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. 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

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

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, Synthetic Route of 106-32-1, 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. 106-32-1 belongs to class esters-buliding-blocks, name is Ethyl octanoate, and the molecular formula is C10H20O2, Synthetic Route of 106-32-1.

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