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Cheese Selection

LACTIC ACID FERMENTATION 

WHAT IS LACTIC ACID FERMENTATION?

Lactic acid is...​

  • Glucose is converted into lactic acid

  • Microbes such as Lactobacillus spp., Lactococcus spp.

  • Enzyme lactate dehydrogenase catalyses this reaction

  • Can be found in cheese, yogurt etc.

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Optimal Factors

Temperature: 

Homofermentative LAB: 30–35°
(usually used to ferment dairy products)
Heterofermentative LAB: 15–22°C
(essential in creating flavors – e.g. pickles)

pH:

pH 5.8 to 6.9

 

(Chin, 2023), (Rault et al., 2009)

Usages of Lactic-Acid fermentation

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Cheese

Reactants:

Milk (protein source), Lactic acid bacteria (microbe), Rennet (enzyme for coagulation) 

Cheese, Whey, Lactic acid, Carbon dioxide (in some cheese types)

Products:

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(Everyday Elements, 2018)

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Yoghurt

Reactants:

Milk (protein source), Lactic acid bacteria (microbe)

Yoghurt, Lactic acid, diacetyl, Exopolysaccharides, residual bacteria cultures

Products:

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(FuseSchool, 2018), (Kayanush J. Aryana, 2017)

School of Science and Technology

Ashley, Aldrey, Charmaine

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