Water is a large part of ketchup, due to it being 80% of the composition of distilled vinegar. In order for the water within the ketchup to be at the lowest possible energy state, all of the hydrogen bonds that are able to be made within the matrix must be made. [ 47 ]

2021年3月12日 · In the case of “non-Newtonian” fluids such as ketchup, the situation is different: a stronger force reduces the viscosity. This behavior, known as shear thinning, is caused by polymers that are...

2023年2月9日 · What's the scientific reason for that watery glug that comes out of the ketchup bottle at first? It turns out that this phenomenon happens with many items.

Ketchup is something scientists call a non-Newtonian fluid. Shampoo, mayonnaise and toothpaste are other examples of non-Newtonian fluids. Newtonian fluids — like water and oil— have a single viscosity. Thus, they always flow in the same manner.

2019年5月14日 · What causes the lower water activity of ketchup? The water activity of a fresh tomato is very close to one, it contains so much water. Ketchup though has a water activity closer to 0.93 thanks to the addition of both sugar (about 20w%) and salt (only about 1w%) to …

2019年4月17日 · Ketchup doesn't play by the rules. Physics is all around us, even in our food. Learn about viscosity, fluid flow, and why it's important in foods.

You may see a layer of water appear when ketchup is left alone for long periods. Excess water can eventually separate out of this molecular matrix on its own; this is known as leaching [1]. What you need to do is to shake to homogenize it – to redistribute the molecules of the ketchup.

2023年7月17日 · To be clear, not every ketchup is made by stirring additional water into a previously water-reduced tomato paste. Then again, this particular aspect illustrates a notable contrast in how homemade ketchup is often made versus …

2017年1月6日 · The solids in the ketchup may have settled to the bottom, leaving a watery film on top (the dreaded ketchup water that comes out before the ketchup at so many backyard barbecues). Or some of the condiment may have settled in the narrow neck and dried out.

Ketchup is a concentrated mixture of substances that do not dissolve in water. The main ingredient of the ketchup is a tomato paste and thickeners that enrich the composition or determine the product durability.