Table of Contents
- 1 What is the average volume of a popcorn kernel?
- 2 What should happen to the mass of popcorn after it is popped?
- 3 When you heat popcorn what happens to the water inside the popcorn kernels?
- 4 What is the average density of popped popcorn?
- 5 How is popcorn volume measured?
- 6 How does heating popcorn affect the pressure inside the popcorn?
- 7 How does corn turn into popcorn?
- 8 What are the properties of popcorn?
- 9 What are the physical properties of popcorn kernels?
- 10 What do you use to measure the temperature of popcorn?
- 11 What temperature does Corn Pop in the oven?
What is the average volume of a popcorn kernel?
40.8 to 47.2 cm3/g.
The average popping volume ranged from 40.8 to 47.2 cm3/g. The number of UPKs ranged from 13 to 45. The weight percentage of UPKs varied from 0.62 to 1.56\%. The highest weight percentage of UPKs occurred in the largest kernels in three of the four genotypes tested.
What should happen to the mass of popcorn after it is popped?
The mass of the corn decreases slightly after popping. Popping corn contains a small amount of water. During the popping process this water turns to steam and escapes into the at- mosphere. In this way a small amount of mass is lost.
What is the density of a popcorn kernel?
1.224 g/cm3
The true density and bulk density decreased linearly from 1.304 to 1.224 g/cm3 and 0.771 to 0.703 g/cm3 respectively while porosity increased from 40.87\% to 42.56\%.
When you heat popcorn what happens to the water inside the popcorn kernels?
“Inside each kernel of popcorn is a tiny droplet of water surrounded by a hard shell called a hull. As the popcorn is heated, the water turns into steam, which builds pressure inside the kernel. When the hull can no longer contain the pressure —POP! — the kernel explodes, and a fluffy new piece of popcorn is born.”
What is the average density of popped popcorn?
What is the average percent of water in a popcorn kernel?
about 14 percent
Extra: Ideal popcorn kernels contain about 14 percent water. You can estimate how much water is in your kernels by weighing them (plus oil and pot) before popping and afterward.
How is popcorn volume measured?
To pop the corn over heat, put a couple of tablespoons of oil in the pot or beaker, add corn and heat over medium heat. If you are using a microwave, you can measure the volume of the popcorn in a bag of microwave popcorn and assume the same volume is in a second bag of popcorn that you pop before class.
How does heating popcorn affect the pressure inside the popcorn?
If the kernel is heated to a high enough temperature, this water will transform into steam. Due to the hard and mostly nonporous shell, the steam has nowhere to go, resulting in a buildup of pressure inside the kernel. With high temperatures, the starch gelatinizes and then expands with the rapid burst of the kernel.
How does corn pop into popcorn?
As the kernel heats up, the water expands, building pressure against the hard starch surface. Eventually, this outer layer gives way, causing the popcorn to explode. As it explodes, the soft starch inside the popcorn becomes inflated and bursts, turning the kernel inside out.
How does corn turn into popcorn?
As heat is applied to the dried kernels, the droplet of water converts to steam, and pressure begins to build. Once the hull can no longer hold the pressure of the steam, the kernel explodes. The starch inside the kernel turns into the white fluffy, crunchy stuff we call popcorn.
What are the properties of popcorn?
In this study, some physical properties of popcorn kernels were studied and also geometric mean diameter, kernel surface area, kernel volume, thousand seed weight, true density, bulk density, porosity, angle of repose, and static coefficient of friction.
What is the percent by mass of popcorn in popcorn kernels *?
People often wonder what is the ideal percentage of water in popcorn kernels for best popping. Popcorn is harvested in the fall when the kernels’ moisture content is between 16 and 20\%. The kernels are then stored in bins where they are dried by forced air until reaching an optimum moisture level of 14\%.
What are the physical properties of popcorn kernels?
Physical properties of kernels, grains, and seeds are necessary for the design of equipment to handle, transport, process and store the crop. The physical properties of popcorn kernels have been evaluated as a function of kernel moisture content, varying from 8.95\% to 17.12\% (db).
What do you use to measure the temperature of popcorn?
I assembled my equipment: a stove, small scale, pot, cooking oil, timer, infrared thermometer — and, of course, some popcorn. That infrared thermometer measures the heat, or thermal radiation, released from a surface.
What is the size of a seed kernel?
The sphericity, kernel volume, kernel surface area, and thousand seed weight increased linearly from 0.677 to 0.717, 73.24 to 125.14 mm 3, 96.26 to 134.92 mm 2, and 136 to 157 g, respectively.
What temperature does Corn Pop in the oven?
The researchers found that in an oven, corn pops at 180 °C (356 °F). At this temperature, water inside the tough kernels turns to steam. As that steam expands, pressure builds up inside the kernel.