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卡路里和千何之间的差异

July 27, 2011Posted byMadhu

Thekey difference在卡路里和Kilojoules之间一卡路里等于4.184公斤。

Calories and kilojoules are units that we can use to measure theenergy. Usually, we use these two words in measuring food energy. It is necessary to indicate the amount of energy contained in each food item on their packaging. Some countries indicate the energies of food in calories, and some countries indicate it in kilojoules.

CONTENTS

1.Overview and Key Difference
2.What are Calories
3.What are Kilojoules
4.Side by Side Comparison – Calories vs Kilojoules in Tabular Form
5.概括

What are Calories?

We can define a calorie as “the amount of heat energy required to raise the temperature of 1 gram of water up by 1oC。”我们主要使用该单元测量食品能量。1千瓦利等于1000卡路里。通常在食品包装中,制造商给出了千瓦时或“卡路里”一词(在卡路里开始时的资本“ C”一词),其含义与千瓦利相同。因此,“卡路里”和“卡路里”在食品化学方面具有两种不同的含义。

卡路里和千何之间的差异

图01:卡路里比较

Obesity is a common problem; therefore, people concerns about the calories they take into their bodies. Not only for this, it is important to know the energy amount of food we are taking, in order to maintain a healthy body. We need food for our body to produce energy. For example, 1 g of carbohydrate and 1 g of protein normally contain 4 Calories and 1 g of fat contains 9 Calories. The food we are taking in, undergo a process calledmetabolism. In this process, the chemical energy stored in food converts into the chemical energy ofATP. Our body needs ATP to provide energy to all the functions in the body.

Furthermore, if there is an excess amount of calorie consumption than the calories burned in the body, then this calorie stores as fat in our body. As a result of that, the body weight will increase. To control the weight gain, people can increase the burning rate of stored fat by exercising. However, if the consuming energy is less than what we want, then the body weight reduces. Different people need different calorie intakes per day depending on age, gender, size, environment and their daily activities. For instance, children, athletes, and hardworking people need more energy than elderly people.

What are Kilojoules?

Kilojoules are the SI unit to measure energy. 1000 joules are equivalent to a 1 kilojoule. Joule has different definitions based on the form of energy that we measure with it. We can define it as the energy needed to apply a 1 force of Newton to move 1 m distance.

Key Difference Between Calories and Kilojoules

在电能方面,这是通过一伏的电势差移动一个库仑的电荷所需的工作。此外,就食物化学而言,1千瓦利/卡路里等于4.184千焦耳。同样,该术语的定义不同,具体取决于我们要测量的能量类型。

What is the Difference Between Calories and Kilojoules?

Calorie is the amount of heat energy required to raise the temperature of 1 gram of water up by 1oC while kilojoules are the SI unit to measure energy. Though we can use both these terms to measure the energy of food, the values they express are different from each other. Therefore, the key difference between calories and kilojoules is that one calorie equal 4.184 kilojoules. Moreover, a calorie is a larger unit to measure energy when compared to kilojoules.

此外,卡路里和千何之间的另一个重要区别是,我们使用卡路里来测量食物的能量,而单位Kilojoule在广泛的范围内很有用,例如电能测量,化学能,食品,食品能量等。

卡路里和千何之间的差异in Tabular Form

概括– Calories vs Kilojoules

There are several units that we can use to measure energy. The SI unit is kilojoules. However, regarding food energy, we measure the energy mainly in calories or kilocalories. But we can use the term kilojoules as well. Thus, these units express different amounts of energies. Hence, the key difference between calories and kilojoules is that one calorie equal 4.184 kilojoules.

Reference:

1. “Kilojoules Explained.” SA Health.Available here
2. “Calorie.” Wikipedia, Wikimedia Foundation, 6 Nov. 2018.Available here

Image Courtesy:

1.”34517645532″ byfranchise opportunities(CC BY-SA 2.0)viaFlickr
2.”Good Food Display – NCI Visuals Online”By Unknown – National Cancer Institute, an agency part of the National Institutes of Health, with the ID 2397 (image) (next)., (Public Domain) viaCommons Wikimedia

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Filed Under:通用化学

About the Author:Madhu

Madhu毕业于具有文学学士学位(荣誉)学位的生物科学,目前是工业和环境化学硕士学位。她的思维牢固地扎根于化学基本原理和对不断发展的工业化学领域的热情,她非常有兴趣成为那些在化学方面寻求知识的人的真正伴侣。

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