Bio-Functional Properties of Lactic Acid Bacteria in Functional Foods—2nd Edition

Dear Colleagues,

Lactic acid bacteria (LAB) are pivotal in the production of fermented foods, serving as functional ingredients that enhance both the quality and safety of these products. Fermentation, a process valued for its preservation capabilities, also improves the sensory, technological, and nutritional attributes of raw ingredients. LAB are instrumental in this transformation, contributing to the development of desired sensory properties and ensuring microbiological safety. In traditional fermented foods, LAB initiate fermentation by converting carbohydrates into lactic acid, which acts as a natural preservative by inhibiting the growth of spoilage and pathogenic microorganisms. Beyond extending shelf life, LAB fermentation enriches food products with probiotics, beneficial bacteria that promote gut health. The presence of LAB in fermented foods, such as cheese, yogurt, sauerkraut, salami, olives, and kimchi, has been associated with improved digestibility, enhanced nutrient bioavailability, and potential therapeutic benefits. Furthermore, selected LAB strains play a crucial role in preserving the cultural identity of regional cuisines, as they are closely linked to native ingredients, local biodiversity and traditional food-processing practices. The variability in artisanal production, however, poses challenges in identifying specific LAB strains, which can include species belonging to genera such as Lactobacillus and Streptococcus, among others, which are actively involved not only in technological functions but also in biopreservation and potential therapeutical activities. Despite this, the health benefits conferred by these microorganisms, such as improved lactose digestion, infection prevention, and possible cancer risk reduction, underscore their significance in the food industry.

It is clear that lactic acid bacteria are essential functional ingredients in fermented foods, offering a multitude of benefits, from enhancing flavor profiles to promoting health and well-being. Their role in food fermentation underscores the intricate balance between culinary traditions and modern nutritional science.

Dr. Svetoslav Todorov
Guest Editor

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