Cellulose and cellobiose

this presentation is about cellulose and cellobiose, their function and structures etc. the slides contain structure and figures related to the topics. i hopes it will useful for you peoples.

1. CELLULOSE AND CELLOBIOSE By Afrasiyab 6 th Semester Botany

2. CELLULOSE

3. Introduction Cellulose is an organic compound with the formula (C 6 H 10 O 5 ) n , Polysaccharide carbohydrate consisting of a linear chain of several hundred to many thousands of β(1→4) linked D-glucose units. Cellulose is an important structural component of the primary cell wall of green plants, many forms of algae and the oomycetes..

4. History Cellulose was discovered in 1838 by the French chemist Anselme Payen , who isolated it from plant matter and determined its chemical formula.

5. Properties Cellulose has no taste Odorless insoluble in water Soluble in organic chemicals Cellulose is non toxic , biodegradable solid homo-biopolymer . At pure state white in color . Molecular mass is around 1.44 × 106 to 1.8 × 106 g Cross bonding gives the maximum strength

6. Use of cellulose Cotton : composed of 87 -90% cellulose with the cotton fibers containing polymer chains Pharmaceuticals : Medicines are derived from plants cellulose, cellulose acetate , etc. Cellophane: Can be obtained when a viscous cellulose reacts with acid (sulfuric acid) Energy Drinks: Glucuronolacton, vitamins, and carbohydrates Industrial Sugar, biofuel production, using oil production, ester production

7. CELLOBIOSE

8. Introduction Cellobiose is a disaccharide with the formula C 12 H 22 O 11 . Cellobiose , a reducing sugar, consists of two β-glucose molecules linked by a β(1→4) bond. It can be hydrolyzed to glucose enzymatically or with acid.

9. Cont.….. It can be obtained by enzymatic or acidic hydrolysis of cellulose and cellulose rich materials such as cotton, jute, or paper.

10. Properties Chemical formula------------ C 12 H 22 O 11 Molar mass------------------- 342.297 g·mol −1 Appearance ------------------ white, hard powder Odor -------------------------- odorless Melting point ---------------- 203.5 °C (398.3 °F; 476.6 K) (decomposes) Solubility in water----------- 12 g/100mL Solubility --------------------- very slightly soluble in alcohol insoluble in ether, chloroform

11. Reference www.slideshare.net www.google.com www.Wikipedia.org/wiki/cellubiose

12. THE END

13. THANKS