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Acid Hydrolysis - Crossref

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Last Updated: 15 November 2022

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Effect of acid hydrolysis on the structural and antioxidant characteristics of β-glucan extracted from Qingke (Tibetan hulless barley)

The rheological behavior of u03b2-glucan before and after acid hydrolysis can be described as pseudoplastic and Newtonian, respectively. The highest transition temperature was found in the DSC curves of the u03b2-glucans with high molecular weights. In Qingke, a dose-dependent pattern was evident in the 2, 2u2019-azino-bis radical scavenging activity and the loss of soluble u03b2-glucans. In the meantime, the antioxidant activities of Qingke u03b2-glucan of various molecular weights were similar. This paper showed that the acid hydrolysis of Qingke u03b2-glucans had no effect on antioxidant activity.

Source link: https://doi.org/10.3389/fnut.2022.1052901


Scalable Preparation of Complete Stereo-Complexation Polylactic Acid Fiber and Its Hydrolysis Resistance

Polypropylene poly enantiomer poly's stereocomplexation can greatly raise the heat resistance and hydrolysis resistance of PLA products, as shown by the screenshot above. The combined melt-spinning process of PLLA/PDLA was carried out in this work, obtaining PLA fiber with a complete SC structure. The SC crystallites had better hydrolysis resistance than homocrystallization, according to an accelerated hydrolysis experiment in a 95 u00b0C water bath. The monofilament strength retention rate of SC2112190 fiber was found to be high after hydrolysis for 24 h, which was significantly improved compared to PLLA/PDLA braided fabric, and was much higher than PLLA/PDLA drawn fiber.

Source link: https://doi.org/10.3390/molecules27217654


Characterization of Cellulose Nanocrystals (CNCs) Derived from Microcrystalline Cellulose (MCC) Synthesized Using Acid Hydrolysis Method.

Abstract This paper describes the development of cellulose nanocrystals from commercially-sourced microcrystalline cellulose by acid hydrolysis and subsequent analysis of the yield. The hydrolysis reaction was completed using 64% sulphuric acid at 45°C for 1 hour. The crystallinity degree of the CNCs was 8. 94% higher than the MCC average, according to the X-ray diffraction report. During this investigation, the CNCs sample had remarkably low surface charges of -25. 6 u00b18. 24 mV, as shown by a potential analysis. The rod-like morphology of the CNCs sample, which had average diameter of 9. 36. 81nm and 83. 84% crystallinity index, was shown by transmission electron microscopy analysis, according to further investigation by transmission electron microscopy analysis.

Source link: https://doi.org/10.21203/rs.3.rs-2193287/v1


Effects of Phosphatidic Acid on Islet Cell Phosphoinositide Hydrolysis, Ca2+, and Adenylate Cyclase

Phosphatidic acid may be raised in glucose-stimulated islet cells by hydrolysis of phosphatidylitol 4,5-bisphosphate and de novo synthesis with glucose-derived trioses. In neonatal u03b2-cells, the mechanism by which exogenous phosphatidic acid from egg yolk lecithin can raise insulin secretion has been investigated. It's likely that newly synthesized phosphatidic acid can act in viva cell of glucose-stimulated islet cells in both local Ca2+ concentration and cyclic AMP-sensitive pathways. The presence of recently synthesized phosphatidic acid obtained from glucose may indicate a correlation between glucose metabolism and insulin release.

Source link: https://doi.org/10.2337/diab.38.9.1187


Enzymatic Strategies for the Preparation of Pharmaceutically Important Amino Acids through Hydrolysis of Amino Carboxylic Esters and Lactams

Abstract: The most influential lipase-catalyzed plans for the synthesis of pharmaceutically important cyclic and acyclic enantiomers by hydrolysis of the corresponding amino carboxylic esters and lactams over the last decade have been overlooked. In the Main Text, the enantiomeric amino acids' pharmacological importance is given next to their synthesis, and it is also illustrated in the Conclusions and Outlook sections.

Source link: https://doi.org/10.2174/0929867329666220718123153


Optimization of catalytic properties of Mucor racemosus lipase through immobilization in a biocompatible alginate gelatin hydrogel matrix for free fatty acid production: a sustainable robust biocatalyst for ultrasound-assisted olive oil hydrolysis

In this research, alginate-gelatin hydrogel matrix was synthesized and used as immobilization aid for Mucor racemosus lipase. Enzyme-assisted hydrolysis of olive oil was also investigated. With a decline rate of 42% after 30 days, the Alg-Gel matrix displayed high trapment effectiveness with a degradation rate of 42 percent after 30 days. The hydrolysis of olive oil using Alg-Gel-Lip increased strongly as compared to the free Lip. Vmax results for free and immobilized Lip were determined to be 5. 5 mM and 5. 8 mM oleic acid/ml, respectively, with respective Km values of 2. 2 and 2. 58 mM/ml. After being stored for 60 days at 4 00b0C for 60 days, the enzyme activity of Alg-Gel-Lip was frozen at 96% after four cycles and 90 percent of the initial capacity. Using ultrasound, Alg-Gel-Lip catalyzed olive oil hydrolysis demonstrated a dramatic rise in hydrolysis rate compared to free Lip. The Alg-Gel-Lip biocatalyst has a huge industrial application potential, particularly for free fatty acid production.

Source link: https://doi.org/10.1007/s13205-022-03319-8


Terephthalic Acid (TPA) Recovery from Plastic Bottle of Polyethylene Terephthalate (PET) through Hydrolysis Treatment

Abstract: Plastic recycling has a positive effect on solid waste management because it can give plastic garbage a new lease on life. Plastic waste removal is one of the options for plastic waste recovery, in which plastic monomer can be recovered by depolymerization, hydrolysis treatment is one of the treatment options for plastic waste recovery. This research investigated the recovery of polyethylene terephthalate plastic in nitric acid and leachate. The PET residue was measured as a percentage change in weight difference, according to the increase in TPA yield trends. The hydrolysis with nitric acid will produce more TPA than the leachate method.

Source link: https://doi.org/10.1088/1757-899x/1257/1/012007

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions