Category: 110-34-9

Ni, Zi-hao published the artcileCatalytic esterification, kinetics, and cold flow properties of isobutyl palmitate, Application In Synthesis of 110-34-9, the publication is Fuel (2019), 115368, database is CAplus.

Iso-Bu palmitate was synthesized by the esterification of palmitic acid and isobutanol with pyridine Bu bisulfate ionic liquid as the catalyst in a self-designed reactor. The kinetics of the esterification and cold flow properties of biodiesel were also studied. The optimal reaction conditions for the esterification are as follows: catalyst dosage, 6%; reaction time, 60 min; molar ratio of isobutanol to palmitic acid, 5:1; and reaction temperature, 100°C. The verification test was conducted under the optimal conditions, and the esterification rate was up to 98.79%. The kinetics of catalytic esterification was analyzed. The reaction orders was 1.49; the activation energy E_a was 57.38 kJ/mol; the frequency factor A was 2.70 × 10⁷; and the reaction kinetics model was – dc_A/dt = 2.70 × 10⁷e^-(57.38/RT)c^1.49_A. The solidifying point (SP), cold filter plugging point (CFPP), and kinematic viscosity of iso-Bu palmitate obtained were 3°C, 7°C, and 4.93 mm² s^-1, resp. Compared to Me palmitate, the SP decreased by six times, and CFPP decreased by 3.28 times. Therefore, the use of branched-chain alc. instead of methanol ester exchange descaling method can effectively reduce the SP and CFPP of biodiesel to improve cold flow properties of biodiesel.

Fuel published new progress about 110-34-9. 110-34-9 belongs to esters-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Ester, name is Isobutyl palmitate, and the molecular formula is C20H40O2, Application In Synthesis of 110-34-9.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Thiebaut, Benoit published the artcileApplication of headspace SPME-GC-MS in characterization of odorous volatile organic compounds emitted from magnetic tape coatings based on poly(urethane-ester) after natural and artificial ageing, Product Details of C20H40O2, the publication is Polymer Testing (2007), 26(2), 243-256, database is CAplus.

The aim of this study was to study the emission of volatile organic compounds (VOCs) in magnetic tapes after several decades of natural aging at room temperature Headspace solid-phase microextraction was used as a sample preparation technique and gas chromatog.-mass spectrometry was used to characterize the VOCs. Eight samples of polyester-based magnetic tapes having a magnetic coating made of a poly(urethane-ester) polymeric binder, various additives and magnetic particles were studied. The compounds identified in the samples were fatty acid ester lubricants, compounds from antioxidants such as 2,6-bis(1,1-dimethylethyl)-4-methyl-phenol, manufacturing byproducts such as cyclic polyester oligomers, and deterioration compounds from the magnetic coating. Homologous series of carboxylic acids, furanones and aldehydes were identified. The latter compounds were exclusively present in the magnetic coating and could be related to the odor intensity by odor sensory ranking testing. These compounds are most likely to be the source of the often reported characteristic smell.

Polymer Testing published new progress about 110-34-9. 110-34-9 belongs to esters-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Ester, name is Isobutyl palmitate, and the molecular formula is C26H45N5O7Si2, Product Details of C20H40O2.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Zhao, Guozhong published the artcileEffect of steam explosion on physicochemical properties and fermentation characteristics of sorghum (Sorghum bicolor (L.) Moench), Product Details of C20H40O2, the publication is LWT–Food Science and Technology (2020), 109579, database is CAplus.

Steam explosion (SE) was applied to modify the physicochem. properties and fermentation characteristics of sorghum (Sorghum bicolor (L.) Moench). SEM (SEM) showed that the dense structures of sorghum especially the starch granules were destroyed, and much more folds, crimps and holes appeared in sorghum starch. Cellulose, hemicellulose and proteins in sorghum tended to decrease when the SE pressure increased which were investigated by fourier transformed IR (FTIR) spectroscopy and SDS-PAGE. SE pretreatment increased the content of reducing sugar in sorghum, and the content of reducing sugar in sorghum pretreated by SE of 2.0 MPa increased over 19 times than the control. Moreover, fermentation results indicated that the ethanol yield was over 2 times higher than the control under the pressure of 1.5 MPa. The fermentation broth increased and the fermentation residue decreased obviously by SE pretreatment than the control. The kinds and the relative contents of esters increased, especially the Et acetate. This study suggested that SE pretreatment could reduce the waste content and promote the ethanol production in the liquor industry.

LWT–Food Science and Technology published new progress about 110-34-9. 110-34-9 belongs to esters-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Ester, name is Isobutyl palmitate, and the molecular formula is C8H17Br, Product Details of C20H40O2.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Kim, Hye Ryun published the artcileCharacterization of yakju brewed from glutinous rice and wild-type yeast strains isolated from nuruks, SDS of cas: 110-34-9, the publication is Journal of Microbiology and Biotechnology (2010), 20(12), 1702-1710, database is CAplus and MEDLINE.

Korean traditional rice wines yakju and takju are generally brewed with nuruk as the source of the saccharogenic enzymes by natural fermentation To improve the quality of Korean rice wine, the microorganisms in the nuruk need to be studied. The objective of this research was to improve the quality of Korean wine with the wild-type yeast strains isolated from the fermentation starter, nuruk. Only strain YA-6 showed high activity in 20% ethanol. Precipitation of Y89-5-3 was similar to that of very flocculent yeast (>80%) at 75.95%. Using 18S rRNA sequencing, all 10 strains were identified as Saccharomyces cerevisiae. Volatile compounds present in yakju were analyzed by gas chromatog.-mass selective detector. The principal component anal. (PCA) of the volatile compounds grouped long-chain esters on the right side of the first principal component, PC1; these compounds were found in yakju that was made with strains YA-6, Y89-5-3, Y89-5-2, Y90-9, and Y89-1-1. On the other side of PC1 were short-chain esters; these compounds were found in wines that were brewed with strains Y183-2, Y268-3, Y54-3, Y98-4, and Y88-4. Overall, the results indicated that using different wild-type yeast strains in the fermentation process significantly affects the chem. characteristics of the glutinous rice wine.

Journal of Microbiology and Biotechnology published new progress about 110-34-9. 110-34-9 belongs to esters-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Ester, name is Isobutyl palmitate, and the molecular formula is C20H40O2, SDS of cas: 110-34-9.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Li, Ji-tao published the artcileAnalysis of aroma composition of purple sweet potato and rice wine fermented with different yeast starters, Application of Isobutyl palmitate, the publication is Shipin Kexue (Beijing, China) (2014), 35(16), 202-207, database is CAplus.

The aroma components of purple sweet potato and rice wine fermented with three different yeast starters, alc. active dry yeast and Saccharomyces cerevisiae 1383 and 1596 were analyzed. The anal. was carried out using automatic static headspace-solid phase micro-extraction-gas chromatog.-mass spectrometry. Moreover, the effect of mass ratio between purple sweet potato pulp and sacchrified sticky rice pulp on wine quality was studied. The results showed that the best mass ratio between purple sweet potato pulp and sacchrified sticky rice pulp was in the range of 3: 2-1: 1; the aroma of purple sweet potato and rice wine was composed mainly of esters, alcs., aldehydes, ketones, and alkyl vinyl. Totally 73 aroma components were identified, including 55, 54 and 55 components individually observed in the wines fermented with alc. active dry yeast, and Saccharomyces cerevisiae 1383 and 1596, resp., and 38 aroma components were common to the three wines. The most predominant aroma compound in these three wines was pentanol with relative contents of 17.67%, 17.84% and 18.63%, resp.

Shipin Kexue (Beijing, China) published new progress about 110-34-9. 110-34-9 belongs to esters-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Ester, name is Isobutyl palmitate, and the molecular formula is C20H40O2, Application of Isobutyl palmitate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Vijayakumar, B. published the artcileAn eco-friendly method for the synthesis of aryl and alkyl esters of carboxylic acids using acid activated Indian bentonite, Application of Isobutyl palmitate, the publication is Journal of the Indian Chemical Society (2005), 82(10), 922-925, database is CAplus.

Esterification of various carboxylic acids with phenol and alcs. was achieved using acid activated Indian bentonite (AAIB) as catalyst. The catalyst is versatile, and the reaction is found to work well for primary, secondary and tertiary alcs. The yields are very good under specific reaction conditions.

Journal of the Indian Chemical Society published new progress about 110-34-9. 110-34-9 belongs to esters-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Ester, name is Isobutyl palmitate, and the molecular formula is C5H10OS, Application of Isobutyl palmitate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Kurkcuoglu, M. published the artcileComposition and antimicrobial activity of the essential oils of Calamintha betulifolia Boiss. et Bal, Recommanded Product: Isobutyl palmitate, the publication is Journal of Essential Oil Research (2007), 19(3), 285-287, database is CAplus.

The water distilled essentials oil from the aerial parts of Calamintha betulifolia Boiss. et Bal. collected from three different localities in Turkey were analyzed by GC and GC/MS. Fifty six to seventy nine components representing 80.6-93.0% of the oils were characterized. Pulegone (26-54%) was found as the main constituent. The antimicrobial effects of C. betulifolia essential oil are reported here for the first time.

Journal of Essential Oil Research published new progress about 110-34-9. 110-34-9 belongs to esters-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Ester, name is Isobutyl palmitate, and the molecular formula is C20H40O2, Recommanded Product: Isobutyl palmitate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Ohiri, Reginald C. published the artcileSolvent based variations in yield of bioactive extracts from the sclerotium of Pleurotus tuber-regium, Synthetic Route of 110-34-9, the publication is Chemica Sinica (2019), 10(1), 773-791, database is CAplus.

Background: The therapeutic effectiveness of herbs and fungi used for medicinal purposes is not only a factor of their bioactive constituents but also a factor of both the extraction solvent and extraction method. Objective: The objective of this study is to extract and analyze the bioactive components in the sclerotum of Pleurotus tuber-regium using different solvents, as to ascertain the solvent that gives a better yield. Method: A quantity of 10.0 kg of fresh sclerotia of P. tuber-regium purchased at Zarama Market in Southern Nigeria was washed, peeled and the white inner parts were sliced using a sterilized knife. The sliced samples were dried at room temperature for fourteen days. After grinding, the bioactive components were extracted by weighing 10 g of sample into three well stopper bottles and each was extracted in 20 mL of specific extraction solvent (methanol, hexane and dichloromethane), while that of soxleth extraction was done in a soxleth apparatus, using ethanol as the solvent. The process was repeated twice and the combined aliquot obtained were concentrated to 5.0 mL and purified. Two milliliters of the extracts were used for gas chromatog. and mass spectroscopy anal. Result: The highest peak on the chromatogram for the methanol extract was observed at 32.644 min., while hexane, dichloromethane and soxhlet extracts had their highest peaks at 31.459 min., 14.254 min. and 18.060 min. resp. The highest bioactive component in methanol extract was (3aR,4R,7R)-1,4,9,9-Tetramethyl-3, 4,5,6,7,8-hexahydro2H-3a,7-methane with a value of 62.856%, while hexane, dichloromethane and soxhlet extracts had Hexasiloxane, tetradecamethyl-, Bis(2-ethylhexyl) phthalate and Phthalic acid, 3-chlorobenzyl Bu ester with values of 29.170%, 5.092% and 25.490% resp. Conclusion: Hexane and dichloromethane extracts yielded more bioactive components with better nutriceutical and medicinal properties and may be regarded as better solvents for mushroom and fungi extractions.

Chemica Sinica published new progress about 110-34-9. 110-34-9 belongs to esters-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Ester, name is Isobutyl palmitate, and the molecular formula is C20H40O2, Synthetic Route of 110-34-9.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Zhang, Yu-yu published the artcileVolatile component analysis of traditional fermented flour paste by GC-MS, COA of Formula: C20H40O2, the publication is Shipin Kexue (Beijing, China) (2012), 33(16), 100-105, database is CAplus.

The volatile composition of traditional fermented flour paste was analyzed by simultaneous distillation extraction (SDE) and gas chromatog. and mass spectrometry (GC-MS). The volatile compounds separated from traditional fermented flour paste were identified by comparing their retention indexes with those of reference compounds Their relative contents were determined by peak area normalization method and their contents in traditional fermented flour paste were measured by internal standard method. A total of 113 compounds were identified accounting for 95.368% of the total peak area. Their total content in traditional fermented flour paste was 263.049 μg/g. These compounds included 10 aldehydes (11.862 μg/g), 25 esters (6.955 μg/g), 20 acids (140.596 μg/g), 14 hydrocarbons (1.934 μg/g), 9 alcs. (5.666 μg/g), 19 heterocycles (53.938 μg/g), 7 ketones (1.406 μg/g) and 9 other compounds (40.692 μg/g).

Shipin Kexue (Beijing, China) published new progress about 110-34-9. 110-34-9 belongs to esters-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Ester, name is Isobutyl palmitate, and the molecular formula is C9H6FNO, COA of Formula: C20H40O2.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Boeve, Jean-Luc published the artcileSecretion of the ventral glands in Craesus sawfly larvae, HPLC of Formula: 110-34-9, the publication is Biochemical Systematics and Ecology (2008), 36(11), 836-841, database is CAplus.

The secretion from ventral glands of Craesus alniastri, Craesus septentrionalis, and Craesus latipes (Hymenoptera, Tenthredinidae, Nematinae) was analyzed by GC-MS. The terpenoid dolichodial was the major compound in the 3 species. A few other terpenoids, several hydrocarbons, esters, aldehydes, and the aromatic compound benzaldehyde were also detected. Among the Nematinae the occurrence of dolichodial is restricted to Craesus and several species of the closely related genus Nematus. Craesus comprises ∼20 species. Their larvae are generally gregarious and brightly colored, and they possess highly developed ventral glands. Field tests show that the gregarious habit of C. septentrionalis larvae is an active process. This manuscript covers the chemotaxonomy, biosynthesis, and bioactivity of dolichodial, and the interactions between glandular secretion and appearance of larvae.

Biochemical Systematics and Ecology published new progress about 110-34-9. 110-34-9 belongs to esters-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Ester, name is Isobutyl palmitate, and the molecular formula is C20H40O2, HPLC of Formula: 110-34-9.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics