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Related Experiment Videos

Should yoghurt cultures be considered probiotic?

Francisco Guarner1, Gabriela Perdigon, Gérard Corthier

  • 1Digestive System Research Unit, University Hospital Vall d'Hebron, Barcelona, Spain. fguarnera@medynet.com

The British Journal of Nutrition
|July 19, 2005
PubMed
Summary

Yoghurt with live bacteria, specifically Streptococcus thermophilus and Lactobacillus delbrueckii sp. bulgaricus, offers health benefits. These probiotics improve lactose digestion and alleviate symptoms of lactose intolerance in humans.

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Area of Science:

  • Microbiology
  • Human Nutrition
  • Gastroenterology

Background:

  • Probiotics are live microorganisms conferring health benefits.
  • Yoghurt consumption is associated with health benefits due to live bacteria.
  • Lactose intolerance affects a significant portion of the population.

Purpose of the Study:

  • To evaluate the probiotic nature of live bacteria in yoghurt.
  • To assess the impact of specific bacterial cultures on lactose digestion.
  • To determine if these cultures alleviate lactose intolerance symptoms.

Main Methods:

  • Human studies were conducted.
  • Consumption of yoghurt containing viable Streptococcus thermophilus and Lactobacillus delbrueckii sp. bulgaricus was administered.

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  • Lactose digestion and intolerance symptoms were monitored.

    • Main Results:

    • Yoghurt with viable cultures demonstrated measurable health benefits.
    • Significant improvement in lactose digestion was observed.
    • Symptoms associated with lactose intolerance were eliminated.

    Conclusions:

    • The live bacteria Streptococcus thermophilus and Lactobacillus delbrueckii sp. bulgaricus in yoghurt meet the definition of probiotics.
    • Yoghurt containing these specific viable cultures is beneficial for individuals with lactose intolerance.
    • These findings support the role of specific fermented dairy products in digestive health.