How to Understand HemiAcetals and HemiKetals in Carbohydrate Chemistry Biochemistry

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This video discusses a very important component in carbohydrate chemistry - the formation of hemiacetals and hemiketals. Carbohydrates are far more stable if they are in the cyclic form and these forms are made possible by the reaction of the carbonyl carbons in the aldehyde or ketone groups with the hydroxyl groups in these monosaccharides such as glucose and fructose. This will also result to a new chiral carbon leading to two new different diastereoisomers - the alpha and beta anomers. • This lecture is divided into the following parts: • 00:00 - Introduction • 01:39 - Hemiacetal and Hemiketal Formation • 02:52 - Stability of Cyclic Hemiacetals and Hemiketals • 03:49 - Glucose Cyclization to Hemiacetal Form • 05:06 - Formation of the Anomeric Carbon • 08:35 - Alpha and Beta Anomers of Monosaccharides • 10:06 - Mutarotation • 11:02 - Hemiketal Formation • 11:25 - Fructose Cyclization to Hemiketal • 12:22 - Formation of Fructofuranose • 13:44 - Formation of Fructopyanose • Follow us on Facebook: / biochemserye to be updated of the latest uploads of BiochemSerye lectures. • Some information for this video was sourced from Color Atlas of Biochemistry 3rd edition, Revised and Updated (https://amzn.to/3CrIRXm). This book is highly recommended since it contains extraordinary color illustrations that make biochemistry concepts easy to understand and retain. • Providing a powerful visual overview of the entire spectrum of human biochemistry, the third edition of the popular Color Atlas of Biochemistry is an ideal reference and study aid. It utilizes the signature Flexibook format, consisting of double-page spreads with clear explanatory text on the left-hand page and exquisitely detailed full-color graphics on the right. These bite-sized learning capsules ensure that your review of any given topic is quick, efficient, and comprehensive, allowing you to target the exact information you need for classroom and exam success. • Some illustrations and information sourced from: • Koolman, Color Atlas of Biochemistry, 3rd edition: https://amzn.to/3iBo63T (eBook available) • Lieberman, Michael, Marks, Allan. Marks’ Basic Medical Biochemistry, A clinical Approach, 5th Edition: https://amzn.to/2Vyab5L (eBook available) • Murray, R. D.KVW Rodwell: et al Harper’s Biochemistry, 31st edition: https://amzn.to/3lLCBDY (eBook available) • Champe, P. Lippincott’s Illustrated Reviews: Biochemistry, 7th edition: https://amzn.to/3ywran3 (eBook available) • If you want to discover more about biochemistry and metabolism, please browse through our other videos: • https://www.youtube.com/channel/UC3M7... • ========================================= • This video channel is for educational purposes only. • Fair Use • Copyright Disclaimer under section 107 of the Copyright Act of 1976, allowance is made for “fair use” for purposes such as criticism, comment, news reporting, teaching, scholarship, education and research. • Fair use is a use permitted by copyright statute that might otherwise be infringing. • Fair Use Definition • Fair use is a doctrine in the United States copyright law that allows limited use of copyrighted material without requiring permission from the rights holders, such as commentary, criticism, news reporting, research, teaching, or scholarship. It provides for the legal, non-licensed citation or incorporation of copyrighted material in another author’s work under a four-factor balancing test. • #hemiacetals #hemiketals #anomers #Biochemserye

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