Lettuce becomes wilted after being in salty salad dressing for a long time because of osmosis. The water inside the cells of the lettuce leaves and is replaced with the salt in the salad dressing.
Salad dressing contains acids which react with the molecules in the salad leaves to, create excess liquid in a chemical reaction. In some rare cases the acid might make the leaves disintegrate and burn a hole right through the bowl. All of these things are determined by the type of salad and the salad dressing.
Lettuce becomes saggy because of the nutrients it absorbs causing it to 'sag'. If the lettuce absorbs more nutrients it will, 'sag'. definition of sag:
(To)sink or subside gradually under weight or pressure or through lack of strength: "he sagged against the wall".
This is probably due to osmosis.
The leaves have fresh water in them, but the salt in the dressing causes the water from the leaves to enter the dressing. This is because the water is trying to even out the concentration of salt in the dressing and the leaves - hence lots of water is needed in the dressing to reduce the concentration of salt.
This means the water from the leaves goes into the dressing, causing the leaves to appear wilted.
In theory, rinsing the leaves and leaving them in fresh water should restore them to their unwilted state, but this would take much longer to achieve than the initial wilting.
There is a net movement of water out of the cells in the salad, in a process called osmosis. This happens until there is equilibrium in the salad cells and the medium outside.
The salt draws the water out of the lettuce. it is the water that keeps it crisp.
that is because the lettce starts to soak in all the salt and moisture and make them soggy
because the molecules react with each other and i don't know about osmosis.
Toss your salad with just enough Caesar dressing to coat the leaves; too much dressing will make your lettuce or other greens lose their crispness too soon and go limp.
Ingredients1 ea LettuceA few spring onions 3 tb Olive oil1 tb White vinegar1/2 ts Salt1 pn Black pepper1/2 ts Basil1/2 ts Chopped garlicWash lettuce & separate the leaves. Allow to drain. Beat the rest of the ingredients in a bowl. Add lettuce leaves & turn them gently so that all the leaves become coated with the dressing. Jack Santa Maria, Greek Vegetarian Cookery
lettuce
No, lettuce has leaves.
This would depend on what is in the salad, if you are going to prepare it and then refrigerate it, and if you leave the dressing off until you serve it. If the salad has cucumbers, tomatoes, or other vegetables that contain a lot of natural moisture, it can cause your lettuce to become limp. If you make the salad(s) then refrigerate, it will remain crisp and brightly colored. If you combine your dressing with the salad too far in advance, it will cause the lettuce to become limp, as well. Ideally, if all of these guidelines are followed, you can make it about a day ahead of time. Also, if you are cutting your own lettuce up, and aren't eating the salad immediately, you should TEAR the leaves, and NOT use a knife. The reaction with the knife and lettuce is what causes the brown edges on the leaves.
Ingredients1 c Radishes;1 c Celery; sliced thin1/4 c French Dressing; (low-cal)1 c Lettuce leaves; torn upToss radishes, celery, and dressing together. Refreigerate an hour or so before placing on lettuce leaves. Food Exchanges per serving: 1 VEGETABLE EXCHANGE CAL: 8 PER SERVING;
What we call "lettuce" is the tender leaves of several different plants
the leaves
in the leaves
In their leaves...
Lettuce, but there are different types of it.