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Raffinose (CAS 512‑69‑6) is a non‑reducing trisaccharide composed of galactose, glucose and fructose units. It naturally occurs in beans, cabbage, whole grains and many plant seeds. Human small intestine lacks enzymes to break it down, so it passes undigested into the colon and gets fermented by gut microbiota, often causing flatulence. Commercially extracted from sugar‑beet molasses, it acts as a prebiotic. It has moderate sweetness, is heat‑stable, and finds use in functional food, while also serving as biochemical reagent for carbohydrate research.
Raffinose (CAS 512‑69‑6) is a natural non‑reducing trisaccharide, mainly extracted industrially from sugar‑beet molasses. It is permitted in multiple regions as a functional food ingredient, yet its commercial form is usually raffinose‑enriched oligosaccharide mixtures rather than 100 % pure raffinose powder. It exhibits heat‑stable and acid‑resistant properties, with sweetness around 20‑40 % of sucrose, and low caloric value since human small intestine cannot hydrolyse its glycosidic bonds.
Its primary food function acts as a prebiotic. Reaching the colon intact, raffinose is fermented by gut microbiota to stimulate growth of Bifidobacterium and Lactobacillus, generating short‑chain fatty acids which support intestinal health. It is incorporated into yoghurt, fermented milk, powdered functional beverages and cereal‑based functional foods. Nevertheless, overconsumption triggers flatulence, bloating or mild diarrhoea, so daily intake is commonly advised below 3 g for sensitive consumers.
Thanks to good thermal and pH stability, raffinose blends find application in baked goods, confectionery and chewing‑gum formulations. It moderates sweetness, suppresses sucrose recrystallisation and improves texture stability during high‑temperature baking or sterilisation. It is non‑cariogenic, meaning it will not be utilised by oral bacteria to produce tooth‑decay‑causing acids, making it suitable for low‑cavity confectionery. It also naturally exists as an inherent component in beans, whole grains and brassica vegetables, contributing to their carbohydrate profile without intentional industrial dosing.
Pure raffinose serves as analytical reference material in food‑science laboratories. Researchers deploy it to investigate carbohydrate fermentation pathways, validate sugar quantification methods and study FODMAP profiles of plant‑derived food matrices. It helps evaluate digestibility and gastrointestinal responses for legume‑based food development.
Regulatory constraints exist across markets. While raffinose‑rich oligosaccharide mixtures are approved, highly purified standalone raffinose sees limited bulk‑food adoption due to high production cost. Formulators must balance prebiotic benefits against gastrointestinal side‑effects and comply with regional usage limits. In summary, raffinose applies chiefly within functional prebiotic food systems and confectionery, alongside laboratory analytical roles. Its natural occurrence in plant foods is nutritionally relevant, yet dosage must be carefully controlled to avoid digestive discomfort for susceptible groups.
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