Gram positive bacterias have a cell wall which will stain in violet color. Gram negative bacterias, howâ¦ever, have an extra layer of cell wall around them which prevents the cell wall from being dyed. These gram negative bacterias will need an additional stain called safranin to make the bacterias redish color.
Grain products like bread, cereal, rice, and pasta are good for you. They are important sources of vitamins and minerals. Breads, cereals, rice, and pasta are also good sources of carbohydrates like starch and fiber. Many people think that starchy foods like breads, rice and pasta are fattening.
Starch-enriched cooking water thickens the sauce. Rinsing the pasta after cooking is a bad idea for a couple of reasons. It can cool the pasta and prevent absorption of a sauce, and it can wash away any remaining surface starch, which at this point in the cooking can work to your advantage.