Download or read book Synthesis of Beta cyclodextrin Inclusion Complex with a Phenolic Antioxidant in Polyethylene Film and Its Industrial Applications written by Manisha Agrawal and published by . This book was released on 2008 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: Keywords: industrial application, cyclodextrin inclusion complex, antioxidant, packaging film.
Download or read book Formation of Beta Cyclodextrin Inclusion Complex with a Phenolic Antioxidant and Its Industrial Applications in Polyethylene Film written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: AGRAWAL, MANISHA. Formation of ÃŽÂ2-Cyclodextrin Inclusion Complex with a Phenolic Antioxidant and its Industrial Applications in Polyethylene Film. (Under the guidance of Dr. Hyun Suk Whang) Butylated hydroxytoluene (BHT) is a phenolic antioxidant, which is primarily used in food additives. Due to its high volatility, it can be suspected to have losses through volatilization in high temperature applications. However, there is barely any research work focused on the formation of BHT-ÃŽÂ2-CD-IC. In this study, we have successfully formed the inclusion compound between BHT and ÃŽÂ2-CD (BHT-ÃŽÂ2-CD-IC) and characterized it using wide-angle x-ray diffraction (WAXD), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), nuclear magnetic resonance spectroscopy (NMR) and ultra violet visible spectroscopy (UV-Vis). We produced on pilot scale three sets of low density polyethylene (LDPE) films with the addition of BHT, ÃŽÂ2-CD, and BHT-ÃŽÂ2-CD-IC. The determination of BHT content in the films was carried out using Gas Chromatography- Mass Spectrometry (GC-MS). The results show that 44% BHT was lost from BHT-ÃŽÂ2-CD-IC LDPE films while 78% BHT was lost from the BHT LDPE film. Hence, the complex proved to be more efficient in preventing loss of BHT due to encapsulation of volatile guest. In addition, microscopy studies indicate that BHT-ÃŽÂ2-CD-IC LDPE film shows small aggregates uniformly distributed over a large range in the LDPE matrix. The oxidative performance of the films was studied using differential scanning calorimetry (DSC) for determining the oxidation induction time (OITtime) and oxidation induction temperature (OITtemp.). It was found that OITtemp.method is less sensitive as compared to the OITtime method. The OITtime was 35 min for the BHT-ÃŽÂ2-CD-IC LDPE film as compared with 16 min and 26 min values of LDPE and BHT LDPE films, respectively. Hence, the encapsulation of BHT in the CD maximizes the efficiency and stability to thermal degradat.
Download or read book Functionality of Cyclodextrins in Encapsulation for Food Applications written by Thao M. Ho and published by Springer Nature. This book was released on 2021-10-06 with total page 343 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cyclodextrins (CD) are cyclic oligosaccharides containing 6, 7 or 8 glucose units (α, β or γ-CD, respectively) in a truncated molecular shape. Their cyclic molecular structure contains a hydrophilic surface and a hydrophobic cavity at the center that can interact (host) with external hydrophobic compounds (guest molecules). Cyclodextrins have been categorized as Generally Recognized As Safe (GRAS) in the USA, “natural products” in Japan, and as “novel food” in Australia, New Zealand and EU countries. They are therefore widely used in food production to encapsulate hydrophobic compounds, including solid, liquid and gas molecules, in order to solubilize, stabilize or control the release rate of these components. To date, there has been no comprehensive review of the very large number of studies performed on encapsulation using cyclodextrin powders for food applications in recent years. This text fills that gap for academics in the encapsulation field and for industry professionals who want to gain a solid understanding of encapsulation functionality of cyclodextrin powders. The book consists of 16 chapters in which chapter 1 introduces cyclodextrin properties and its applications in food processing, and chapters 2-16 explore applications of cyclodextrin in encapsulation for many guest compounds. These compounds include gases, flavors, colors, pigments, polyphenols (plant bioactive compounds), essential oils, lipids (cholesterol and polyunsaturated fatty acids), vitamins, fruit ripening controlling compounds, and antifungal and antimicrobial compounds. These chapters also discuss functionalities of cyclodextrin in packaging, masking off-flavor and off-taste, and as dietary fiber. Covering a broad range of cyclodextrin applications and suitable for both newcomers to encapsulation technology and those with experience, Functionality of Cyclodextrins in Encapsulation for Food Applications is a unique and essential reference on this increasingly important topic.
Download or read book Synthesis and Characterization for the Inclusion Complex of Beta cyclodextrin and Azomethine written by Kavirajaa Pandian Sambasevam and published by . This book was released on 2010 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advances in Research and Practice of Cyclodextrin Inclusion Complex written by Miao Yanfei and published by Scientific Research Publishing, Inc. USA. This book was released on 2021-07-29 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chemistry is a subject that makes human life better. In the past few hundred years, the development of modern chemistry has also explained this meaning perfectly. Naturally, supramolecular chemistry also needs to move from theory to application, from laboratory to society, and ultimately benefit mankind. Insoluble drugs refer to poorly water-soluble drugs, which will lead to difficult absorption and transportation in vivo and low bioavailability. About 40% of the newly discovered natural active substances and nearly 60% of the chemically synthesized drugs are insoluble drugs. Their solubility (in water) is poor and it is difficult to achieve satisfactory clinical efficacy, so they have not been successfully developed into new drugs. Natural β-cyclodextrin can form supramolecular inclusion complexes with insoluble drugs, thus increasing the solubility of insoluble drugs. As a new drug delivery carrier, it has been widely studied and applied. Sulfobutyl eth-er-β-cyclodextrin is a derivative of β-cyclodextrin. Because of its good water solubility and biocompatibility, sulfobutyl ether-β-cyclodextrin can sig-nificantly increase the solubility, bioavailability and low nephrotoxicity of drugs. As a new type of injection drug delivery carrier, it has become one of the hot spots in the research and development of new drugs at home and abroad.
Download or read book Cyclodextrin Technology written by J. Szejtli and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 459 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis and Characterization of Inclusion Complex of Beta cyclodextrin with Dicationic Ionic Liquid written by Hemavathy Surikumaran and published by . This book was released on 2010 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis and Characterization of Inclusion Complex of Beta cyclodextrin with Cationic Ionic Liquid Surfactant written by Bavaani Muniandy and published by . This book was released on 2012 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis and Characterization of Inclusion Complexes of cyclodextrin and AB n Block Copolymers written by Kirk L. Olson and published by . This book was released on 2001 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cyclodextrins in Pharmacy written by Karl-Heinz Frömming and published by Springer Science & Business Media. This book was released on 1993-11-30 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nearly three thousand papers and patents are dedicated to the actual or potential uses of cyclodextrins in pharmacy and pharmaceutical formulations. This is the first book written for pharmacists and pharmaceutical technologists which not only critically summarizes the enormous amount of literature available, but which can be used as a handbook when looking for solutions to practical problems. The fundamentals -- chemistry of cyclodextrins and their derivatives -- their physical and chemical properties are condensed to the most relevant items in Chapters 1 and 2. Chapter 3 deals with the adsorption, metabolism and toxicological properties of cyclodextrins. Chapter 4 explains the formulation, structure, composition and advantageous effects of the cyclodextrin inclusion complexes. Chapter 5 describes the methods for preparation and characterization of drug/cyclodextrin complexes. Chapters 6 and 7 are dedicated to the pharmacokinetics, biopharmaceutical and technological aspects of drug/CD complexes. Chapter 8 treats the application and effects of cyclodextrins in various drug formulations. The Appendix comprises a collection of recipes for any type of drug formulation. This book is aimed at those who use cyclodextrins in drug formulations, to improve the properties of existing drug formulations, or who want to prepare quite new formulations.
Download or read book Synthesis and Reactions of the 9 diazofluorene 1 beta cyclodextrin Inclusion Complex written by Mark A. Peters and published by . This book was released on 1990 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Characterization and Synthesis of Cyclodextrin Inclusion Complexes and Their Applications as Fluorescent Probes for Sensing Biomacromolecules written by Rodolfo Francisco Gomez Biagi and published by . This book was released on 2012 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Enzymatic polymerization of phenolic compounds by oxidoreductases written by Mohamed Ghoul and published by Springer. This book was released on 2012-03-14 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt: The enzymatic polymerization of phenolic compounds has been generating interest in several fields such as food, cosmetics, and pharmaceuticals. These compounds are employed for their antioxidant properties; however, their use is limited by their low solubility and thermal stability. Polymerization can improve their solubility and their thermal stability though and create new properties which are dependent on the molecular mass and the structure of polymers. The reaction yield, the polydispersity, the molecular mass, the structure and the properties of synthesized polymers can be controlled by the mode of control of the reaction and by the reaction conditions. Enzymatic polymerization of phenolic compounds by oxidoreductases analyze the processes used and the key factors (temperature, solvent, origin of the enzyme, structure of the substrate, reactor design, ...) which control the polymerization of phenolic species by these oxidoreductase enzymes in order to obtain polymers with desired characteristics and properties.
Download or read book Preparation and Characterization of Inclusion Complex Between Mono 6 Deoxy 6 3 Benzylimidazolium Beta Cyclodextrin Tosylate with 2 4 6 trichlorophenol written by Noor Maziyah Zainal Abidin and published by . This book was released on 2014 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Preparation and Characterization of Inclusion Complexes of Beta cyclodextrin with 1 butyl 3 methlyimidazolium Chloride Ionic Liquid written by Tilagam Marimuthu and published by . This book was released on 2010 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Preparation and Characterization of Inclusion Complexes of Beta cyclodextrin with 1 butyl 3 Methylimidazolium Bromide written by Muggundha Raoov Ramachandran and published by . This book was released on 2010 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cyclodextrins written by Zhengyu Jin and published by . This book was released on 2017 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt:
