Enzymes in Food: Classification, Function, and Applications

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WHAT ARE ENZYMES AND WHY DO WE CLASSIFY THEM?

Enzymes are biological catalysts, primarily proteins, that accelerate biochemical reactions without being consumed in the process. They are vital for virtually every metabolic function, from digestion to DNA replication. Classifying enzymes provides a universal language for scientists, ensuring clear communication and understanding across various fields of study. It helps in organizing the vast diversity of enzymes, predicting their functions, and facilitating research.

EARLY NAMING CONVENTIONS: HISTORICAL CONTEXT AND INCONSISTENCIES

Historically, enzymes were often named based on their substrate, the reaction they catalyzed, or their discoverer. This led to a plethora of inconsistent and ambiguous names.

Zero one. Substrate-Based Naming

Zero three. Reaction-Based Naming

Zero two. Arbitrary Names

THE NEED FOR A SYSTEMATIC APPROACH: TOWARDS A UNIFIED SYSTEM

Facilitate Communication

Organize Knowledge

Predict Function

EC CLASSES: THE SIX PILLARS OF ENZYME FUNCTION

EC one: Oxidoreductases

EC three: Hydrolases Catalyze the hydrolysis of various bonds (adding water to break a bond).

EC two: Transferases

EC four: Lyases Cleave various bonds by means other than hydrolysis or oxidation, often forming double bonds.

EXAMPLES OF ENZYME NAMING

Zero one. Fourth Number Serial number of the enzyme within its sub-subclass, indicating its absolute specificity.

Two

First Number The main EC class (one to six) indicating the general type of reaction.

THE IMPORTANCE OF ENZYME CLASSIFICATION

KEY PROPERTIES OF ENZYMES

SPECIFICITY

EFFECT OF TEMPERATURE AND PH

EFFICIENCY AND REVERSIBILITY

KEY FUNCTIONS OF ENZYMES

ROLE IN DIGESTION

ROLE IN METABOLISM

ENZYME KINETICS

· Pre-steady state

· Post-steady state

Pre-steady state

RATE OF PRODUCT FORMATION

Michaelis-Menten Kinetics

CLASSIFICATION OF CHEMICAL REACTIONS

One) Zero Order Reaction - does not depend on the concentration of the substrate.

Three) Second Order Reaction - when the sum of powers of concentration is two.

LINEWEAVER-BURK PLOT

INHIBITORS

Uncompetitive Inhibitors

Non-competitive (Mixed) Inhibitors

FACTORS AFFECTING ENZYME ACTIVITY

Competitive Inhibitor

Non Competitive Inhibitor

ENZYME IMMOBILIZATION

IMPORTANCE IN FOOD CHEMISTRY

IMMOBILIZATION TECHNIQUES USED IN FOOD PROCESSING

Entrapment/Encapsulation

Covalent Bonding

Cross-linking

APPLICATION OF ENZYMES IN FOOD PROCESSING

KEY ENZYME APPLICATIONS

BENEFITS OF USING ENZYMES

Overview

The document discusses the classification of enzymes, emphasizing their roles as biological catalysts in food processing. It outlines systematic naming conventions, kinetic properties, and practical applications of enzymes in enhancing food quality and processing efficiency.

Key Points

1Enzymes are biological catalysts that accelerate biochemical reactions
2Proper classification facilitates scientific communication and research
3Enzymes exhibit high specificity for substrates, ensuring efficient reactions
4Enzyme immobilization improves stability and reusability in food processing
5The use of enzymes in food processing enhances quality and reduces costs

Details

Category: Biology and Natural Sciences

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