Synbiotic

What are Synbiotics?

Synbiotics are the combination of a prebiotic and a probiotic that work together to benefit both gut microbes and overall health. The synergy between these two elements supports the survival and activity of beneficial bacteria in the gut. This combination is more effective than either component alone.

For example, xylooligosaccharides (XOS) act as a prebiotic that nourishes certain probiotic strains, such as Bifidobacterium lactis.
Together, they promote microbial diversity and improve digestive health.

Synbiotics enhance the activity of beneficial microbes in the gut, improving health outcomes.

How Do Synbiotics Work?

Synbiotics help probiotic bacteria flourish by feeding them the right prebiotic fibres. This increases the number and activity of beneficial microbes in the gut.
In turn, these microbes support digestion, reduce inflammation, and produce short-chain fatty acids, which nourish gut cells. By combining both components in a synbiotic, we can improve the digestibility of food and support a stronger gut microbiome.

Synbiotics in Sourdough

Although not all sourdoughs are synbiotic, wholegrain sourdough with added fermentable fibres can act in a similar way. For instance, using a flour blend that includes rye or oats provides prebiotic fibres.

inflammation, sourdough and the gut microbiome

When combined with slow fermentation, these ingredients help nourish the lactic acid bacteria already present. At The Sourdough School, we use the BALM Protocol to optimise these interactions—supporting the gut, reducing IBS symptoms, and improving mental health.

Why Synbiotics Matter

Synbiotics contribute to:

Microbial balance – Encouraging the growth of health-promoting microbes
Nutrient bioavailability – Improving the body’s access to essential minerals and vitamins
Digestive ease – Supporting a healthy digestive process and reducing symptoms like bloating or discomfort
Immune function – Helping the gut’s immune defences by reinforcing the intestinal barrier

Incorporating synbiotic principles into your baking or diet can significantly improve health, especially when combined with a diverse, fibre-rich diet.

All reasonable care is taken when writing about health aspects of bread, but the information it contains is not intended to take the place of treatment by a qualified medical practitioner. You must seek professional advice if you are in any doubt about any medical condition. Any application of the ideas and information contained on this website is at the reader's sole discretion and risk.