AngiochefRed onion
Red onion is a mild, sweet allium with purple-red skins and rings that hold their colour in salads and ceviche. It is one of the richest everyday sources of quercetin and also provides anthocyanins such as cyanidin and delphinidin, plant compounds studied in laboratory research for their antioxidant activity. Slice it raw into salads, pickle it in lime or vinegar, or cook it only briefly - long boiling leaches its flavonols into the water.
Polyols
SorbitolNot a source
Source: Measured value (BLS 4.0)
What this means
This is red onion's own sorbitol content, not a recipe amount. Sorbitol is a polyol — a type of sugar alcohol — calculated from two official food-composition databases, Germany's Bundeslebensmittelschlüssel (BLS 4.0) and the French Ciqual table. Recipes are evaluated separately against a 0.20 g threshold (a per-serving cutoff from Varney et al. 2017, Journal of Gastroenterology and Hepatology, applied to one reference serving of the recipe) — an ingredient's own figure isn't directly comparable to that number, since a recipe combines several ingredients in different amounts. This describes the food, not a guarantee about how your body will respond to it.
Sugars
Per 100 g
Total fructose1.8 g
Excess fructoseNot a source
Source: Measured value (BLS 4.0)
What this means
These are red onion's own fructose figures, not a recipe amount. Total fructose is how much fructose the food contains. Excess fructose is fructose minus glucose, counted only when positive, since glucose helps the body absorb fructose — it is the figure behind the "Low fructose" filter and the recipe figures. When measured, both come from two official food-composition databases, Germany's Bundeslebensmittelschlüssel (BLS 4.0) and the French Ciqual table. Recipes are evaluated separately against a 0.40 g threshold of excess fructose (a per-serving cutoff from Varney et al. 2017, Journal of Gastroenterology and Hepatology, applied to one reference serving of the recipe) — an ingredient's own figure isn't directly comparable to that number, since a recipe combines several ingredients in different amounts. This describes the food, not a guarantee about how your body will respond to it.
Sources
- BLS 4.0 (Max Rubner-Institut) · DOI 10.25826/Data20251217-134202-0 · CC BY 4.0
Angiochef shares food and health ideas grounded in published research. It's educational, not medical advice.