Category: 1731-94-8

Short communication: Technological and seasonal variations of vitamin D and other nutritional components in donkey milk was written by Martini, Mina;Altomonte, Iolanda;Licitra, Rosario;Salari, Federica. And the article was included in Journal of Dairy Science in 2018.Recommanded Product: Methyl nonadecanoate The following contents are mentioned in the article:

Vitamin D is an essential nutrient that plays a crucial role in calcium homeostasis and bone metabolism and also acts as a hormone. Although several studies on the content of vitamin D in bovine milk have been conducted, little information is available regarding donkey milk. In the context of the nutritional assessment of donkey milk, the aim of this study was to assess the vitamin D content in donkey milk and its chem. profile, with particular reference to seasonal and technol. modifications after pasteurization. The study was conducted on a dairy farm that produces donkey milk for human consumption located in central Italy. At sampling time, an aliquot of total bulk milk production was sampled before and after pasteurization (63掳C for 30 min without homogenization) with a total of 20 raw and 20 pasteurized milk samples. The samples were collected for 10 mo, every 15 d, from May to Feb. 2017. All the samples were analyzed for the chem. composition and vitamin D₂ and D₃ content by HPLC after saponification The donkey milk analyzed showed a higher average vitamin D content (raw milk: vitamin D₂ = 1.68, vitamin D₃ = 0.60 渭g/100 mL; pasteurized milk: vitamin D₂ = 1.38, vitamin D₃ = 0.30 渭g/100 mL) than reported for bovine and human milk. The results of the effect of pasteurization on milk did not highlight significant differences in the total content of vitamin D. However, vitamin D₃ has a poor thermal stability, which led to a significant reduction in content in pasteurized milk compared with raw milk. The total vitamin D content of donkey milk did not show significant variations between seasons; however, a higher concentration of vitamin D₃ was found in spring and summer. In conclusion, raw and pasteurized donkey milk showed a high content of vitamin D, which could be useful in meeting the deficiencies of this vitamin in humans. Further investigations are needed to improve the vitamin D content in donkey milk by increasing its endogenous synthesis or its transfer in milk and to clarify other variability factors. 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. 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.Recommanded Product: Methyl nonadecanoate

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

Differential accumulation of microbial necromass and plant lignin in synthetic versus organic fertilizer-amended soil was written by Li, Jie;Zhang, Xiaochen;Luo, Jiafa;Lindsey, Stuart;Zhou, Feng;Xie, Hongtu;Li, Yi;Zhu, Ping;Wang, Lichun;Shi, Yuanliang;He, Hongbo;Zhang, Xudong. And the article was included in Soil Biology & Biochemistry in 2020.Recommanded Product: 1731-94-8 The following contents are mentioned in the article:

While it is recognized that the accumulation and turnover of soil organic carbon (SOC) is driven by plant inputs and their subsequent microbial-mediated transformations, the roles of plant residue chem. and microbial processes in controlling SOC dynamics under different fertilizer application regimes have not been well explored. In the present study, amino sugars and lignin phenols were used as biomarkers to investigate the changes in microbial necromass and plant-derived components in a 30-yr cultivated Mollisol (0-20 cm) in response to different fertilizer application treatments, including synthetic fertilizers (NPK, 165 kg N ha^-1, 82.5 kg P₂O₅ ha^-1, and 82.5 kg K₂O ha^-1 per yr), pig manure at two application rates of 30 and 60 t ha^-1 per yr, and combinations of manure and synthetic fertilizers (30 or 60 t ha^-1 manure per yr plus 165 kg N ha^-1, 82.5 kg P₂O₅ ha^-1, and 82.5 kg K₂O ha^-1 per yr). Compared with the unfertilized plot (Control), 30-yr application of synthetic fertilizers increased microbial biomass (161%) and amino sugar production (19.7%), but did not alter lignin phenol and SOC concentrations despite the increased plant input. Comparatively, long term manure applications increased the concentration of SOC (30.8-70.9%), as well as that of amino sugars (82.9-107%) and lignin (96.8-212%) in soil. Nevertheless, despite the enhanced microbial biomass from low to high manure application rate, the proportion of amino sugars in the SOC decreased, reflecting a diluted contribution of microbial necromass in SOC pool buildup at high-rate manure application. On the contrary, the proportions of lignin phenols in the SOC in the manure treatments, as well as the ratios of lignin phenols and amino sugars (0.26-0.42), were larger than that in the NPK treatment (0.22) and increased with increasing manure application rate. Therefore, the manipulation of synthetic or organic fertilizer on SOC dynamics is associated with differential accumulation of microbial necromass and plant lignin in agro-ecosystems. The manure amendment enhanced the contribution of plant-derived components more than microbial necromass to long term SOC accumulation. This study involved multiple reactions and reactants, such as Methyl nonadecanoate (cas: 1731-94-8Recommanded Product: 1731-94-8).

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. 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.Recommanded Product: 1731-94-8

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

Growth and metabolic characteristics of oleaginous microalgal isolates from Nilgiri biosphere Reserve of India was written by Thangavel, Kalaiselvi;Krishnan, Preethi Radha;Nagaiah, Srimeena;Kuppusamy, Senthil;Chinnasamy, Senthil;Rajadorai, Jude Sudhagar;Olaganathan, Gopal Nellaiappan;Dananjeyan, Balachandar. And the article was included in BMC Microbiology in 2018.Product Details of 1731-94-8 The following contents are mentioned in the article:

Renewable energy for sustainable development is a subject of a worldwide debate since continuous utilization of non-renewable energy sources has a drastic impact on the environment and economy; a search for alternative energy resources is indispensable. Microalgae are promising and potential alternate energy resources for biodiesel production Thus, our efforts were focused on surveying the natural diversity of microalgae for the production of biodiesel. The present study aimed at identification, isolation, and characterization of oleaginous microalgae from shola forests of Nilgiri Biosphere Reserve (NBR), the biodiversity hot spot of India, where the microalgal diversity has not yet been systematically investigated. Overall the higher biomass yield, higher lipid accumulation and thermotolerance observed in the isolated microalgal strains have been found to be the desirable traits for the efficient biodiesel production Species composition and diversity anal. yielded ten potential microalgal isolates belonging to Chlorophyceae and Cyanophyceae classes. The chlorophytes exhibited higher growth rate, maximum biomass yield, and higher lipid accumulation than Cyanophyceae. Among the chlorophytes, the best performing strains were identified and represented by Acutodesmus dissociatus (TGA1), Chlorella sp. (TGA2), Chlamydomonadales sp. (TGA3) and Hindakia tetrachotoma (PGA1). The Chlamydomonadales sp. recorded with the highest growth rate, lipid accumulation and biomass yield of 0.28 ± 0. 03 day^-1(μexp), 29.7 ± 0.69% and 134.17 ± 16.87 mg L^-1 day^-1, resp. It was also found to grow well at various temperatures, viz., 25 °C, 35 °C, and 45 °C, indicating its suitability for open pond cultivation. The fatty acid Me ester (FAME) anal. of stationary phase cultures of selected four algal strains by tandem mass spectrograph showed C16:0, C18:1 and C18:3 as dominant fatty acids suitable for biodiesel production All the three strains except for Hindakia tetrachotoma (PGA1) recorded higher carbohydrate content and were considered as potential feed stocks for biodiesel production through hydrothermal liquefaction technol. (HTL). In conclusion, the present investigation is a first systematic study on the microalgal diversity of soil and water samples from selected sites of NBR. The study resulted in isolation and characterization of ten potent oleaginous microalgae and found four cultures as promising feed stocks for biodiesel production Of the four microalgae, Chlamydomonadales sp. (TGA3) was found to be significantly thermo-tolerant and can be considered as promising feedstock for biodiesel production This study involved multiple reactions and reactants, such as Methyl nonadecanoate (cas: 1731-94-8Product Details of 1731-94-8).

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. 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.Product Details of 1731-94-8

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