Comparing E526 - Calcium hydroxide vs E425II - Konjac glucomannan
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Interest over time for 3 keywords in U.S. during the last 10 years.
Interest over time for 2 keywords in U.S. during the last 10 years.
Popular questions
Is calcium hydroxide a strong base?
Yes—calcium hydroxide (slaked lime) is a strong base; although only moderately soluble, its saturated solution (limewater) is highly alkaline (pH around 12.4).
What is calcium hydroxide used for?
In foods it’s used as an acidity regulator and firming agent—commonly for nixtamalizing corn (masa/tortillas), as pickling lime to keep cucumbers crisp, and in sugar refining; it’s also used to adjust brewing water pH.
Is calcium hydroxide bad for you?
At the small amounts used in foods it isn’t considered harmful and is permitted (e.g., FDA GRAS; EU E526) under good manufacturing practice. Concentrated powders or solutions are caustic and can burn or irritate skin, eyes, and the digestive tract.
Is calcium hydroxide safe to eat?
Yes, when food‑grade and used at normal levels it’s considered safe; residual amounts in treated foods are low and can contribute calcium. Avoid ingesting concentrated forms, which are corrosive.
How to make calcium hydroxide?
Industrial food‑grade calcium hydroxide is made by hydrating calcium oxide (quicklime), which is produced by calcining limestone; CaO + H2O → Ca(OH)2. For safety and purity, use commercially prepared food‑grade pickling lime rather than attempting to make it at home, as the reaction is caustic and highly exothermic.
What is glucomannan konjac root?
Glucomannan is a soluble dietary fiber extracted from the konjac plant’s corm (Amorphophallus konjac), used in foods as a thickener, stabilizer, and gelling agent (E425ii).
How is glucomannan konjac made?
Dried konjac corms are milled, the water‑soluble glucomannan is extracted, then purified (typically by filtration and alcohol precipitation) and dried to a fine powder.
How long does konjac root glucomannan stay in your stomach?
It hydrates and slows gastric emptying but generally leaves the stomach in about 2–6 hours, depending on the meal and dose, then moves to the intestines where it’s fermented. Always take it with plenty of water to reduce choking or blockage risk.
How many grams of konjac root glucomannan a day?
Common supplemental intakes are 1–3 g per day (often 1 g three times daily before meals) with plenty of water; EFSA recognizes cholesterol benefits at 4 g/day. Start low to minimize gas or bloating.
How to make konjac noodles with glucomannan powder?
Blend about 10–12 g glucomannan powder into 1 L cold water, then mix in 2–3 g calcium hydroxide (pickling lime) or calcium carbonate; let thicken, extrude or pour into simmering water, and cook 10–15 minutes to set. Rinse well to remove any odor and firm up the texture.