http://www.nrjournal.com/article/S0271-5317(08)00140-1/abstract
spinach
The difference in potassium content between cooked and raw spinach is that cooked spinach has a higher potassium content than raw spinach. Cooking spinach can increase the availability of potassium in the vegetable.
The edible part of spinach is its leaves, which are typically dark green and tender. Spinach leaves can be consumed raw in salads or cooked in various dishes, such as soups, stir-fries, and casseroles. The young leaves are usually more tender and flavorful than the mature ones. Spinach is also rich in vitamins and minerals, making it a nutritious addition to meals.
Fresh young chard can be used raw in salads. Mature chard leaves and stalks are typically cooked or sauteed; their bitterness fades with cooking, leaving a refined flavor which is more delicate than that of cooked spinach.
It is not safe to eat cooked spinach that has been left unrefrigerated for 12 hours. Bacteria can grow rapidly in perishable foods when they are kept in the "danger zone" (between 40°F and 140°F) for more than two hours. Consuming such food can lead to foodborne illnesses. It's best to discard it to avoid any health risks.
No, spinach is a long day plant. It requires more than 12-14 hours of daylight to grow and thrive.
Don't wash spinach before storing, as the exposure to water encourages spoilage. Place spinach in a sealed container, squeezing out as much of the air as possible. Place it in refrigerator where it will keep fresh for up to 5 days.
Spinach is considered to be slightly acidic in its natural state. However, the overall effect it has on the body can be more alkaline due to its mineral content.
No.
Not more than 150 calories...
Because oil has more fat in it
It can. Cooked spinach that has been left out overnight should not be used. It should be treated as any other potentially hazardous food and should be discarded. It does not mean that eating it will guarantee illness. Using it just isn't worth the risk.