Chemistry of Carbohydrates

1. Biochemistry Lecture
GBSN (Unit 4)
Chemistry of Carbohydrates
by,
Miss Areesha Ahmad
Lecturer

12. • Dextrorotatory isomer (Latin: dexter = right) or d-form or represented
by a sign is the optical isomer that spins plane polarised light to the
right (clockwise).
• Laevorotatory isomer, often known as I-form or denoted by the sign,
is the optical isomer that spins plane polarised light to the left
(anticlockwise).

39. An ester bond, also known as an ester linkage, is a strong bond that forms when an alcohol and a carboxylic
acid are combined through a process called esterification

43. Assignment