Swiss Cheese Production
சுவிஸ் சீஸ் தயாரிப்பு
Do not confuse fermentation with respiration. Swiss cheese is not just food; it is a metabolic byproduct of anaerobic respiration. If you miss the specific bacterium, you lose the mark.
The idea
Swiss cheese is ripened by the bacterium Propionibacterium sharmanii. This bacterium performs fermentation on the cheese curd. The process releases a large volume of carbon dioxide gas. These gas bubbles create the characteristic large holes in the cheese.
Why it matters
The bacterium metabolizes nutrients in the cheese curd, releasing CO2 gas which gets trapped, creating the signature texture.
NEET lens
NEET focuses on the specific organism and the gas produced. Memorize 'Propionibacterium sharmanii' and 'CO2'. Do not confuse this with Roquefort cheese, which is ripened by Penicillium roqueforti.
Clinical significance
Excessive consumption of fermented dairy products can exacerbate lactose intolerance in sensitive individuals. The microbial flora used in food production must be strictly controlled to prevent the growth of pathogenic contaminants like Clostridium botulinum.
Introduction
Swiss cheese is ripened by the bacterium Propionibacterium sharmanii. The large holes in Swiss cheese are due to the production of a large amount of CO2 by this bacterium.
Core concept
Cheese is one of the oldest food items in which microbes were used. Different varieties of cheese are known by their characteristic texture, flavour and taste, the specificity coming from the microbes used: the 'large holed' Swiss cheese owes its holes to CO2 from Propionibacterium sharmanii; Roquefort cheese is ripened by growing a specific fungus on it, which gives it a particular flavour.
Go deeper
CO2 bubbles trapped in the cheese while it ripens leave the characteristic large holes (eyes).
From Class 10
The holes in Swiss cheese are made by gas from bacteria while the cheese ripens.