7 public questions tagged with this topic.
Steam distillation is ideal for compounds that are steam volatile and immiscible with water, as it vaporizes the compound below its boiling point with steam.
Ref: NCERT Chemistry Textbook for Class XI and XII, Chapter: Some Basic Concepts, Structure of Atom, Periodicity and relevant Chemistry topic, Topic: Mole concept and periodic trends.
Cyanogen bromide chemical cleavage exquisite selectivity methionine residues enabling precise excision fusion partner. Mechanism involves nucleophilic attack thioether sulfur methionine electrophilic carbon CNBr generating cyanosulfonium intermediate undergoing intramolecular cyclization carbonyl oxygen forming iminolactone ring subsequently hydrolyzed acidic conditions homoserine lactone C-terminal cleavage site while N-terminal fragment released. Specificity exploited recombinant insulin manufacturing where fusion proteins engineered single methionine codon junction between beta-galactosidas
Ref: Methods Enzymol Cyanogen Bromide Cleavage Meinke 1981; Watson Molecular Biology Protein Cleavage Methods; NCERT Biotechnology Bioprocess Cleavage Techniques.
Simple distillation is effective for separating liquids with boiling point differences > 25°C.
Ref: NCERT Class 11 Chemistry > Chapter 8: Organic Chemistry - Some Basic Principles and Techniques > Topic: Purification Methods - Crystallization Distillation Chromatography
Differential extraction uses two immiscible solvents (e.g., water and ether) to separate compounds based on their solubility differences.
Ref: NCERT Class 11 Chemistry > Chapter 8: Organic Chemistry - Some Basic Principles and Techniques > Topic: Purification Methods - Crystallization Distillation Chromatography
Crystallization removes soluble impurities by dissolving the solid in a solvent and allowing it to recrystallize.
Ref: NCERT Class 11 Chemistry > Chapter 8: Organic Chemistry - Some Basic Principles and Techniques > Topic: Purification Methods - Crystallization Distillation Chromatography
Downstream processing involves purification and formulation of biotechnological products before they are marketed or used.
Ref: NCERT Class 12 Biology Chapter 9: Biotechnology: Principles and Processes Bioreactors and Downstream Processing
