Category: 1731-94-8

Heterosegmental Modeling of Long-Chain Molecules and Related Mixtures using PC-SAFT: 1. Polar Compounds was written by Haarmann, Niklas;Enders, Sabine;Sadowski, Gabriele. And the article was included in Industrial & Engineering Chemistry Research in 2019.HPLC of Formula: 1731-94-8 The following contents are mentioned in the article:

A broad range of fatty acids as well as fatty-acid-based, long-chain compounds are synthesized on the basis of triglycerides, which are mainly found in natural fats and oils. These long-chain compounds comprise, for instance, fatty-acid Me and Et esters and fatty aldehydes. Saturated representatives of these individual families are composed of an identical head domain which is connected to an n-alkylic residue that only varies in chain length within a homologous series. In this work, this fact was taken into account for modeling of thermodn. properties using a heterosegmental approach of the Perturbed Chain Statistical Associating Fluid Theory. For this purpose, the n-alkylic residue within a homologous series was modeled using the pure-component parameters of n-alkanes, whereas the parameters for each identical head domain were universally determined With this heterosegmental approach, polar interactions among the identical head domains were explicitly taken into account. Due to its group-contribution-like character, the heterosegmental approach enables the prediction of thermodn. properties of other compounds within a homologous series. Applying the new approach, vapor pressures and liquid densities of the pure long-chain compounds could be represented in good agreement with the available exptl. data. Furthermore, the interactions between the n-alkylic residue and water can be described using independent solubility data of the binary n-alkane + water mixtures Excess enthalpies and excess volumes of the binary long-chain compound + n-alkane mixtures as well as mutual solubilities in the binary Me alkanoate + water mixtures were predicted to be in remarkable agreement with the available exptl. data for a broad range of chain lengths. This study involved multiple reactions and reactants, such as Methyl nonadecanoate (cas: 1731-94-8HPLC of Formula: 1731-94-8).

Methyl nonadecanoate (cas: 1731-94-8) belongs to esters. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. Acyl chlorides and acid anhydrides alcoholysis is another way to produce esters. Acyl chlorides and acid anhydrides react with alcohols to produce esters. Anydrous conditions are recommended since both acyl chlorides and acid anhydrides react with water.HPLC of Formula: 1731-94-8

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

Mass Spectrometry Metabolomics of Hot Steep Malt Extracts and Association to Sensory Traits was written by Bettenhausen, Harmonie M.;Barr, Lindsay;Omerigic, Heather;Yao, Linxing;Heuberger, Adam L.. And the article was included in Journal of the American Society of Brewing Chemists in 2021.SDS of cas: 1731-94-8 The following contents are mentioned in the article:

In the brewing industry, there is value in defining sensory attributes of malt, and recent protocols have been developed that enable anal. of aroma and taste. One method, the “hot steep” is a hot water extract that is highly reproducible and able to distinguish malt flavor. However, the chem. of the hot steep extracts has not been fully defined, and the links between specific metabolites of the hot steep and their resulting sensory attributes remains largely unknown. Here, a study was designed to describe the metabolite chem. of hot steep extracts, and to characterize variation in this chem. and corresponding sensory by comparative anal. of 12 com. pale malts. Metabolomics was performed on the 12 malt hot steep extracts using three mass spectrometry platforms to detect volatiles (HS/SPME-GC-MS) and non-volatiles (UHPLC-TOF-MS and GC-MS). The anal. detected a total of 1,026 compounds including lipids, organic acids, esters, and Maillard Reaction Products (MRPs), of which 162 compounds (15.7%) varied among the 12 hot steep extracts Sensory of the 12 hot steep extracts was performed using an integrated Check All That Apply and quant. anal. method for 14 traits, and the data revealed cereal, grassy, and dough aromas were the attributes that varied. The metabolomics and sensory data were integrated using OPLS anal. The anal. revealed 64 compounds strongly associated with cereal aroma and included MRPs. A total of 23 compounds were strongly associated with grassy aroma including alkane/alkenes, benzenoids, organic acids, lipids, and fatty acid esters. Taken together, these data highlight the utility of the hot steep extract to differentiate malt for flavor and chem. and indicate specific compounds that drive the most dominant flavors observed in this population of pale malts. This study involved multiple reactions and reactants, such as Methyl nonadecanoate (cas: 1731-94-8SDS of cas: 1731-94-8).

Methyl nonadecanoate (cas: 1731-94-8) belongs to esters. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. Because of their lack of hydrogen-bond-donating ability, esters do not self-associate. Consequently, esters are more volatile than carboxylic acids of similar molecular weight.SDS of cas: 1731-94-8

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

Rumex nervosus leaves meal improves body weight gain, duodenal morphology, serum thyroid hormones, and cecal microflora of broiler chickens during the starter period was written by Azzam, Mahmoud M.;Qaid, Mohammed M.;Al-Mufarrej, Saud I.;Al-Garadi, Maged A.;Albaadani, Hani H.;Alhidary, Ibrahim A.. And the article was included in Poultry Science in 2020.SDS of cas: 1731-94-8 The following contents are mentioned in the article:

A total of 192 one-day-old Ross 308 broiler chicks were assigned to 4 treatments with 8 replicate cages of 6 chicks (3 and 3) per cage according to a completely randomized block design. The dietary treatments were a basal diet (control) and a control diet supplemented with 1,000, 3,000, and 5,000 mg/kg Rumex nervosus leaves meal (RN). Gallic acid and some volatile compounds were detected in the RN extract On day 10 of age, BW was improved (P = 0.016) with supplemental RN (1,000-5,000 mg/kg). On day 14 of age, dietary application of RN up to 3,000 mg/kg increased BWG (P = 0.003) compared with control, while a 1,000 mg/kg RN had the best feed conversion ratio (P = 0.016). On day 10 of age, samples were taken on a single female bird per replicate. The addition of RN (1,000-5,000 mg/kg) increased (P < 0.001) serum albumin and triiodothyronine levels and maximized the relative weight of breast meat (P = 0.003). Feeding a diet with 1,000 mg/kg RN resulted in greater duodenal villus height (P < 0.001) than control and the diet with 5,000 mg/kg RN. Broilers fed diet supplemented with 1,000 mg/kg RN had the best duodenal villus surface area (P < 0.001). Feeding a diet with 1,000 mg/kg RN decreased (P < 0.001) cecal Escherichia coli count compared with control and the diet with 5,000 mg/kg RN. Salmonella spp. count tended to increase with 5,000 mg/kg RN leaves meal (P = 0.069, linear P = 0.026). In conclusion, R. nervosus leaves meal could be considered as a phytogenic feed additive in broiler diets up to a 1,000-mg/kg inclusion rate because of its combined pos. effects on BWG, feed conversion ratio, villus height, villus surface area, serum albumin and triiodothyronine hormone, and cecal E. coli during the starter period (day 10-14 of age). Further study is required to elucidate its mol. mechanism. This study involved multiple reactions and reactants, such as Methyl nonadecanoate (cas: 1731-94-8SDS of cas: 1731-94-8).

Methyl nonadecanoate (cas: 1731-94-8) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits. Esters contain a carbonyl center, which gives rise to 120掳 C鈥揅鈥揙 and O鈥揅鈥揙 angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C鈥揙鈥揅 bonds has a low barrier. Their flexibility and low polarity is manifested in their physical properties; they tend to be less rigid (lower melting point) and more volatile (lower boiling point) than the corresponding amides. SDS of cas: 1731-94-8

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

Paracoccus xiamenensis sp. nov., isolated from seawater on the Xiamen was written by Lyu, Lina;Zhi, Bin;Lai, Qiliang;Shao, Zongze;Yu, Zhiqiang. And the article was included in International Journal of Systematic and Evolutionary Microbiology in 2020.Recommanded Product: Methyl nonadecanoate The following contents are mentioned in the article:

Strain 12-3^T was isolated from seawater of the Guanyinshan Coast, Xiamen, Fujian Province, PR China. The bacterium was Gram-stain-neg., rod-shaped, aerobic, oxidase-pos. and catalase-neg. Growth of strain 12-3^T occurred at 10-37掳C (optimum, 20-30掳C), at pH 5.0-11.0 (optimum, pH 7.0-8.0) and at a salinity range of 0-10% (optimum, 3-5%). The results of phylogenetic anal. based on its 16S rRNA gene sequence indicated that strain 12-3^T belonged to the genus Paracoccus and had the highest sequence similarity to Paracoccus lutimaris HDM-25^T (97.4%), followed by Paracoccus isoporae SW-3^T (96.9%), Paracoccus caeni MJ17^T (96.9%), Paracoccus pacificus F14^T (96.8%) and other species in the genus Paracoccus (95.3-96.5%). The average nucleotide identity (ANI) and DNA-DNA hybridization (DDH) values between strain 12-3^T and P. lutimaris HDM-25^T were 76.1 and 17.0%, resp. ANI and DDH values between strain 12-3^T and P. isoporae SW-3^T were 78.9 and 18.2%, resp. The principal fatty acid of strain 12-3^T was summed feature 8 (C₁₈聽_:聽₁ 蠅6c/蠅7c) and C₁₈聽_:聽₀. The respiratory quinone of strain 12-3^T was Q10. The polar lipids included phosphatidylcholine, phosphatidylethanolamine, phosphatidylglycerol, diphosphatidylglycerol and an unidentified glycolipid. The G + C content of the chromosomal DNA was 63.9 mol%. The combination of the results of the phylogenetic, phenotypic and chemotaxonomic anal., and its low ANI and DDH values indicate that strain 12-3^T represents a novel species of the genus Paracoccus, for which the name Paracoccus xiamenensis sp. nov. is proposed. The type strain is 12-3^T (= MCCC 1A16381^T = KCTC 72687^T). This study involved multiple reactions and reactants, such as Methyl nonadecanoate (cas: 1731-94-8Recommanded Product: Methyl nonadecanoate).

Methyl nonadecanoate (cas: 1731-94-8) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Polyesters are important plastics, with monomers linked by ester moieties. Acyl chlorides and acid anhydrides alcoholysis is another way to produce esters. Acyl chlorides and acid anhydrides react with alcohols to produce esters. Anydrous conditions are recommended since both acyl chlorides and acid anhydrides react with water.Recommanded Product: Methyl nonadecanoate

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

Dissecting the taxonomic heterogeneity within Propionibacterium acnes: proposal for Propionibacterium acnes subsp. acnes subsp. nov. and Propionibacterium acnes subsp. elongatum subsp. nov. was written by Dekio, Itaru;Culak, Renata;Misra, Raju;Gaulton, Tom;Fang, Min;Sakamoto, Mitsuo;Ohkuma, Moriya;Oshima, Kenshiro;Hattori, Masahira;Klenk, Hans-Peter;Rajendram, Dunstan;Gharbia, Saheer E.;Shah, Haroun N.. And the article was included in International Journal of Systematic and Evolutionary Microbiology in 2015.COA of Formula: C20H40O2 The following contents are mentioned in the article:

Propionibacterium acnes subsp. acnes subsp. nov. and Propionibacterium acnes subsp. elongatum subsp. nov. are described. These emanate from the three known phylotypes of P. acnes, designated types I, II, and III. Electron microscopy confirmed the filamentous cell shape of type III, showing a striking difference from types I/II, which were short rods. Biochem. tests indicated that, in types I/II, either the pyruvate, L-pyrrolidonyl arylamidase or D-ribose 2 test was pos., whereas all of these were neg. among type III strains. Matrix-assisted laser-desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) spectra, which profile mainly their ribosomal proteins, were different between these two groups. Surface-enhanced laser-desorption/ionization time-of-flight mass spectrometry (SELDI-TOF MS) spectra of all phylotypes revealed a specific protein biomarker that was overexpressed in type III strains compared with types I/II only when grown aerobically. Reference strains had high whole-genome similarity between types I (>91 %) and II (>75%), but a considerably lower level of 72% similarity with type III. recA and gyrB sequence dendrograms confirmed the distant relatedness of type III, indicating the presence of two distinct centers of variation within the species P. acnes. On the other hand, cellular fatty acid profiles and 16S rRNA gene sequence relatedness (>99.3%) circumscribed the species. Thus, we propose two subspecies, Propionibacterium acnes subsp. acnes subsp. nov. for types I/II and Propionibacterium acnes subsp. elongatum subsp. nov. for type III. The type strain of Propionibacterium acnes subsp. acnes is NCTC 737T (= ATCC 6919T = JCM 6425T = DSM 1897T = CCUG 1794T), while the type strain of Propionibacterium acnes subsp. elongatum is K124T (= NCTC 13655T = JCM 18919T). This study involved multiple reactions and reactants, such as Methyl nonadecanoate (cas: 1731-94-8COA of Formula: C20H40O2).

Methyl nonadecanoate (cas: 1731-94-8) belongs to esters. Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones. Esterification is the general name for a chemical reaction in which two reactants (typically an alcohol and an acid) form an ester as the reaction product. Esters are common in organic chemistry and biological materials.COA of Formula: C20H40O2

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

Effects of the timing of a culture temperature reduction on the comprehensive metabolite profiles of Chlorella vulgaris was written by Ahn, Hye Min;Kim, So-Hyun;Hyun, Sun-Hee;Lim, Sa Rang;Kim, Hye-Youn;Oh, Junsang;Lee, Kyung-Min;Hong, Seong-Joo;Cho, Byung-Kwan;Lee, Hookeun;Lee, Choul-Gyun;Choi, Hyung-Kyoon. And the article was included in Journal of Applied Phycology in 2016.Application In Synthesis of Methyl nonadecanoate The following contents are mentioned in the article:

This study investigated the effects of different temperature conditions on the comprehensive metabolite profiles of Chlorella vulgaris using gas chromatog.-mass spectrometry coupled with multivariate statistical anal. C. vulgaris cells cultivated at 20 掳C were transferred to 10 掳C incubators at different time points of cultivation [days 0 (TR0D), 7 (TR7D), and 14 (TR14D)], then they were cultivated at 10 掳C until harvesting at day 21 to compare the growth and comprehensive metabolite profiles with those cultivated under a constant cultivation temperature of 20 掳C (T20). There was no significant difference in algal cell growth between cultivation under the T20 and temperature reduction (TR) conditions. Algal fatty-acid profiles under TR were different from those of the T20 condition. Specifically, the contents of octadecanoic acid (C18:0), octadecenoic acid (C18:1), hexadecadienoic acid (C16:2), and octadecadienoic acid (C18:2) increased the most under TR0D. The relative levels of metabolites such as 尾-alanine, glutamine, glycine, isoleucine, proline, valine, and myo-inositol, which act as osmolytes, and bioactive compounds such as neophytadiene and ascorbic acid were increased under TR conditions on day 21. Among the metabolites, the contents of neophytadiene and ascorbic acid were further investigated, and the content of ascorbic acid was highest on day 14 under the TR7D condition, while the content of neophytadiene was highest on day 21 under the TR0D and TR14D condition. Therefore, we suggest that a TR from 20 to 10 掳C could enhance the production in C. vulgaris cultures of bioactive fatty acids such as C18:1, C16:2, and C18:2 (TR0D), organic osmolytes such as 尾-alanine, glutamine, glycine, isoleucine, proline, valine, and myo-inositol (TR conditions), ascorbic acid (TR7D), and neophytadiene (TR0D and TR14D). This study involved multiple reactions and reactants, such as Methyl nonadecanoate (cas: 1731-94-8Application In Synthesis of Methyl nonadecanoate).

Methyl nonadecanoate (cas: 1731-94-8) belongs to esters. Esters are also usually derived from carboxylic acids. It may also be obtained by reaction of acid anhydride or acid halides with alcohols or by the reaction of salts of carboxylic acids with alkyl halides. Esters contain a carbonyl center, which gives rise to 120掳 C鈥揅鈥揙 and O鈥揅鈥揙 angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C鈥揙鈥揅 bonds has a low barrier. Their flexibility and low polarity is manifested in their physical properties; they tend to be less rigid (lower melting point) and more volatile (lower boiling point) than the corresponding amides. Application In Synthesis of Methyl nonadecanoate

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

Insight into the Chemical Complexity of Soluble Portions from Cornstalk Methanolysis was written by Yan, Hong-Lei;Zong, Zhi-Min;Li, Zhan-Ku;Kong, Jiao;Zheng, Quan-Xi;Zhao, Mei-Xia;Li, Yan;Wei, Xian-Yong. And the article was included in Energy & Fuels in 2016.Recommanded Product: Methyl nonadecanoate The following contents are mentioned in the article:

Cornstalk was subjected to methanolysis in the presence of NaOH at 220-320 掳C to afford soluble portions (SPs) 1-5 (SP₁-SP₅) and an inextractable portion (IEP). The maximum total yield (ca. 51%) of SPs was acquired at 300 掳C with the same mass of NaOH and cornstalk. Under the same conditions, SP₁ has the highest yield, followed by SP₅ and SP₂. The relatively volatile and less polar species in the resulting SPs and IEP were identified with a gas chromatograph/mass spectrometer (GC/MS). The polar species in SP₁, SP₂, and SP₅ were further analyzed with a neg.-ion electrospray ionization Fourier transform ion cyclotron resonance mass spectrometer (FTICRMS). The anal. with GC/MS shows that phenolic compounds and alcs. are the dominant group components in SP₁ and SP₂, resp., while the predominant compounds in esterified SP₃-SP₅ and IEP are esters. According to anal. with FTICRMS, thousands of compounds were detected in SP₁, SP₂, and SP₅. Most of the compounds are O_n (n = 1-10) class species with double bond equivalent (DBE) values of 1-14 and carbon atom numbers of 5-35. The most abundant class species in SP₁, SP₂, and SP₅ are O₃, O₃, and O₈, resp. SP₁ and SP₂are rich in O₂-O₄ class species with DBE values of 5-8, which may be attributed to lignin-derived compounds Different from SP₁ and SP₂, SP₅ has relatively high contents of O₅-O₁₀ class species, corresponding to various acidic species. In addition, N₁O_n (n = 0-8) class species with DBE values of 3-14 were also identified, which should contain a pyrrole ring as the parent structure. This study involved multiple reactions and reactants, such as Methyl nonadecanoate (cas: 1731-94-8Recommanded Product: Methyl nonadecanoate).

Methyl nonadecanoate (cas: 1731-94-8) belongs to esters. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. Many esters have the potential for conformational isomerism, but they tend to adopt an s-cis (or Z) conformation rather than the s-trans (or E) alternative, due to a combination of hyperconjugation and dipole minimization effects. The preference for the Z conformation is influenced by the nature of the substituents and solvent, if present. Lactones with small rings are restricted to the s-trans (i.e. E) conformation due to their cyclic structure.Recommanded Product: Methyl nonadecanoate

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

Evaluation of the anticoccidial effect of traditional medicinal plants, Cinnamomum verum bark and Rumex nervosus leaves in experimentally infected broiler chickens with Eimeria tenella was written by Qaid, Mohammed M.;Mansour, Lamjed;Al-Garadi, Maged A.;Alqhtani, Abdulmohsen H.;Al-abdullatif, Abdulaziz A.;Qasem, Mahmood A.;Murshed, Mutee A.. And the article was included in Italian Journal of Animal Science in 2022.Application In Synthesis of Methyl nonadecanoate The following contents are mentioned in the article:

Rumex nervosus leaves (RNL) and Cinnamomum verum bark (CNB), phytogenic herbs, have received much attention in recent years for their antimicrobial properties; however, there is limited knowledge about their potential anticoccidial functions. The prophylactic effects of RNL and CNB were compared with salinomycin, a standard synthetic anticoccidial agent, in broilers exptl. infected with Eimeria tenella (E. tenella). One-day-old broiler chicks (n = 225) were randomly divided into nine groups. Birds were either fed a basal diet containing 1, 3, or 5 g RNL or 2, 4, or 6 g CNB/kg feed, or treated with salinomycin within the basal diet, or the infected (IUT) or non-infected (UUT) groups were fed a basal diet only. Birds infected (n = 25 bird/group) with 40,000 sporulated E. tenella oocysts/bird at d 21 except UUT. Bodweight gain (BWG) and feed conversion ratio (FCR) were significantly (p < .05) lower in IUT compared to UUT. On day 7 post-infection (DPI), birds treated with RNL, CNB, or salinomycin had fewer lesions in the caeca and a lower oocyst value, and a higher oocyst reduction rate in the faeces than birds in the IUT. Although RNL was not able to reduce weight loss caused by coccidiosis, CNB at 6 g improved FCR and production efficiency index (PEI) at 7 DPI compared to the infected groups. In conclusion, RNL at 5 g and CNB at 6 g have moderate anti-coccidial activity and could be used to treat poultry coccidiosis in the field. However, more research is needed to identify active ingredients that make it effective compared to com. available drugs. HIGHLIGHTSPhytogenic feed additives prevented weight loss and caecum pathol. in broiler chickens at risk of coccidiosis. Rumex nervosus leaves and Cinnamomum verum bark had similar effects to the coccidiostat salinomycin at high doses. Traditional medicinal plants are potential alternatives to pharmaceutical coccidiostats to promote the health and growth of broiler chickens. This study involved multiple reactions and reactants, such as Methyl nonadecanoate (cas: 1731-94-8Application In Synthesis of Methyl nonadecanoate).

Methyl nonadecanoate (cas: 1731-94-8) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits. Cyclic esters are called lactones, regardless of whether they are derived from an organic or inorganic acid. One example of an organic lactone is 纬-valerolactone.Application In Synthesis of Methyl nonadecanoate

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

Process dynamic investigations and emission analyses of biodiesel produced using Sr-Ce mixed metal oxide heterogeneous catalyst was written by Banerjee, Sushmita;Sahani, Shalini;Chandra Sharma, Yogesh. And the article was included in Journal of Environmental Management in 2019.Electric Literature of C20H40O2 The following contents are mentioned in the article:

The present study explores the feasibility of Sr-Ce based mixed metal oxides for its performance in transesterification reaction of waste cooking oil. The catalyst synthesis was carried out through gel combustion route and was characterized through several techniques including thermal anal. (TGA-DTA), X-ray diffraction (XRD), attenuated total reflectance based Fourier transform IR spectroscopy (ATR-FTIR), high resolution SEM (HR-SEM) assisted with EDX, BET sp. surface area and Hammett indicator basicity. The enhanced activity of the catalyst was investigated at pH 7.0 with Sr-Ce at. ratio of 3:1 at 900掳C of calcination temperature Influences of various process parameters on transesterification efficiency were carefully investigated. The exptl. results demonstrated that maximum transesterification efficacy of 99.5% was achieved under optimized reaction conditions with catalyst dose of 2.0 wt%, oil-to-methanol ratio 1:14, reaction time 120 min, reaction temperature 65掳C and stirring speed of 700 rpm. For better interpretation of the process, the reaction rate was computed by employing pseudo-first and pseudo-second order kinetics model at varying reaction temperature (50掳C-75掳C). The transesterification data agreed well with pseudo-first order model with highest rate constant value of 2.5 脳 10^-3 min^-1 was evaluated at 65掳C. Activation energy and frequency of the reaction was quantified from the Arrhenius expression as 17.04 kJ/mol and 9.92 min^-1, resp. Thermodn. anal. of the reaction system suggests that the transesterification of the waste cooking oil followed endergonic reaction pathway. Synthesis of biodiesel was ascertained from the H¹ -NMR and FTIR anal. of the transesterified product, further, the physicochem. properties of the biodiesel were also compared with that of diesel fuel and the resultant values were found to be within ASTM limits. Reusability study was also conducted and it indicated that the catalyst can be easily regenerated and could be effectively reused up to four runs. This study involved multiple reactions and reactants, such as Methyl nonadecanoate (cas: 1731-94-8Electric Literature of C20H40O2).

Methyl nonadecanoate (cas: 1731-94-8) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits, including apples, durians, pears, bananas, pineapples, and strawberries. Esters are more polar than ethers but less polar than alcohols. They participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols. This ability to participate in hydrogen bonding confers some water-solubility.Electric Literature of C20H40O2

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

Rice rhizodeposition promotes the build-up of organic carbon in soil via fungal necromass was written by Luo, Yu;Xiao, Mouliang;Yuan, Hongzhao;Liang, Chao;Zhu, Zhenke;Xu, Jianming;Kuzyakov, Yakov;Wu, Jinshui;Ge, Tida;Tang, Caixian. And the article was included in Soil Biology & Biochemistry in 2021.Name: Methyl nonadecanoate The following contents are mentioned in the article:

Rice rhizodeposition plays an important role in carbon sequestration in paddy soils. However, the pathways through which rice rhizodeposits contribute to soil organic C (SOC) formation are poorly understood because of specific paddy soil conditions. Furthermore, microbial necromass has been largely ignored in studies examining the contribution of rhizodeposits to C sequestration during plant growth. To evaluate the contribution of microbial necromass to SOC formation via rhizodeposition, rice (Oryza sativa L.) plants were continuously labeled with ¹³CO₂ for 38 days under ambient (aCO₂, 400渭L L^-1) or elevated CO₂ (eCO₂, 800渭L L^-1) in a paddy field at two levels of N fertilization. The distributions of photosynthetic-¹³C in the shoots and roots, microbial communities, and SOC fractions were quantified. eCO₂ increased plant growth and, consequently, the total ¹³C incorporated into the shoots, roots, and SOC compared to aCO₂, while N fertilization (100 kg N ha^-1) decreased root biomass and rhizodeposits in the soil and microbial pools, including living biomass (phospholipid fatty acids, PLFA) and microbial necromass (amino sugars). Rhizodeposits were initially immobilized mainly by bacteria and preferentially recovered in fungal necromass (glucosamine). While ¹³C incorporation into PLFAs was slightly increased during plant growth, ¹³C in microbial necromass increased greatly between the tillering and booting stages. Fungal necromass, which is less decomposable compared to bacterial residues, was the largest contributor to C sequestration with rhizodeposits via the mineral-associated SOC fraction, particularly under elevated CO₂ without N fertilization. This study reveals the significance of the C pathways from rhizodeposits through fungal necromass and organo-mineral associations for the build up of SOC in paddy fields. This study involved multiple reactions and reactants, such as Methyl nonadecanoate (cas: 1731-94-8Name: Methyl nonadecanoate).

Methyl nonadecanoate (cas: 1731-94-8) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits. Liquid esters of low volatility serve as softening agents for resins and plastics. Esters also include many industrially important polymers. Polymethyl methacrylate is a glass substitute sold under the names Lucite and Plexiglas; polyethylene terephthalate is used as a film (Mylar) and as textile fibres sold as Terylene, Fortrel, and Dacron.Name: Methyl nonadecanoate

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