' An Act to preserve daylight and provide standard time for the United States ' was enacted on March 19, 1918. [See law] It both established standard time zones and set summer DST to begin on March 31, 1918. Daylight Saving Time was observed for seven months in 1918 and 1919.
Nitrate-rich foods include lettuce, parsley and spinach. âLeafy vegetables contain chemical nitrate that improves heart health,â the Mail Online reports. In a recent study, researchers looked at the effects of a nitrate-rich diet on rats.
1 Amount of bacteria present in meat that is needed for Nitrate to produce nitrite and here we do not have any control. 2  The more bacteria present, the more nitrite released. 3  Adding sugar may be beneficial as it provides food for bacteria to grow faster.hen Nitrates were used alone, salt penetration was usually ahead of color development. As a result large pieces of meat were too salty when fully colored and had to be soaked in water. This problem has been eliminated when using nitrite.