Food Preservation
Food Preservation
Food Preservation: Food items are prone to spoilage by microorganisms, there are methods by which food can be preserved for a longer time. Food preservation is the process of treating and handling food with an aim to stop or slow down its spoilage while maintaining its nutritional value, texture, and flavour. Since microorganisms are one of the major causes of food spoilage, food preservation involves creating conditions unfavorable for their growth. Food preservation methods either kill microbes or prevent their reproduction.
Different methods of food preservation and how it preserves food
Boiling: Boiling liquid food items can kill any existing microbes. Milk and water are often boiled to kill any harmful microbes that may be present in them.
Dehydration: Dehydration involves removal of water, one of the key requirements for microbial growth, from food items. Food items like cereals and pulses are generally dried under the sun to remove the moisture present in them.
Refrigeration and Freezing: Refrigeration at low temperatures and freezing help to preserve food for a longer time because microbes like bacteria and fungi cannot thrive at low temperatures. When fresh fruits and vegetables are frozen, water present in them also freezes. This helps in preventing microbial reproduction. Food items that can be preserved by freezing include meat and vegetable.
Canning: Storing food items in airtight cans is an effective way of preserving them. Food items like jams, vegetables, fish, and even cooked food are canned and sold in the market.
Using Chemical Preservatives: Any substance that helps preserve food or any other item is known as a preservative. Many chemicals help control microbial growth and are used as preservatives. Examples of chemical preservatives are sodium benzoate and potassium metabisulphite. These preservatives are used in squashes, sherbets, and ketchups.
Using salt sugar, oil, or vinegar: Salt, sugar, oil, and vinegar create an environment that prevents microbial growth, and are, therefore, used for preserving foodstuffs like meat pickles, jams, jellies, and vegetables. In addition to preserving foodstuffs, these substances also impart flavour to them.
Pasteurization: Pasteurization involves heating a foodstuff to a high temperature and then cooling it rapidly. This helps in destroying harmful microbes without changing the composition, flavour, or nutritive value of the foodstuff. This process is named after the French chemist Louis Pasteur, who discovered it in the 19th century. Commercially available milk is first heated to a high temperature for about half a minute and then cooled rapidly. It is then stored at temperatures lower than 10°C.
Which of the following is the method of food preservation ? | |||
| Right Option : D | |||
| View Explanation | |||
Which of the following are commonly used as food preservatives ? | |||
| Right Option : D | |||
| View Explanation | |||
Which gas is used to preserve the packaged food (like potato chips etc)- | |||
| Right Option : B | |||
| View Explanation | |||
Students / Parents Reviews [20]
Abhyas academy is great place to learn. I have learnt a lot here they have finished my fear of not answering.It has created a habit of self studying in me.The teachers here are very supportive and helpful. Earlier my maths and science was good but now it has been much better than before.
Barkha Arora
10thAbhyas is a complete education Institute. Here extreme care is taken by teacher with the help of regular exam. Extra classes also conducted by the institute, if the student is weak.
Om Umang
10thAbhyas institute is one of the best coaching institute in the vicinity of Ambala cantt.The institute provides good and quality education to the students.The teachers are well experienced and are very helpful in solving the problems. The major advantages of the institute is extra classes for weak...
Shreya Shrivastava
8thMy experience with Abhyas academy is very good. I did not think that my every subject coming here will be so strong. The main thing is that the online tests had made me learn here more things.
Hiya Gupta
8thWe started with lot of hope that Abhyas will help in better understnding of complex topics of highers classes. we are not disappointed with the progress our child has made after attending Abhyas. Though need to mention that we expected a lot more. On a scale of 1-10, we would give may be 7.
Manya
8thIt has a great methodology. Students here can get analysis to their test quickly.We can learn easily through PPTs and the testing methods are good. We know that where we have to practice
Barkha Arora
10thWhen I have not joined Abhyas Academy, my skills of solving maths problems were not clear. But, after joining it, my skills have been developed and my concepts of science and SST are very well. I also came to know about other subjects such as vedic maths and reasoning.
Sharandeep Singh
7thAbhyas is an institute of high repute. Yogansh has taken admission last year. It creates abilities in child to prepare for competitive exams. Students are motivated by living prizes on basis of performance in Abhyas exams. He is satisfied with institute.
Yogansh Nyasi
7thIt was good as the experience because as we had come here we had been improved in a such envirnment created here.Extra is taught which is beneficial for future.
Eshan Arora
8thMy experience with Abhyas is very good. I have learnt many things here like vedic maths and reasoning also. Teachers here first take our doubts and then there are assignments to verify our weak points.
Shivam Rana
7thMy experience with Abhyas Academy has been very good. When I was not in Abhyas whenever teacher ask questions I could not speak it confidently but when I came in Abhyas, my speaking skills developed and now I am the first one to give the answer of teachers question.
Upmanyu Sharma
7thAbhyas is good institution and a innovative institute also. It is a good platform of beginners.Due to Abhyas,he has got knoweledge about reasoning and confidence.My son has improved his vocabulary because of Abhyas.Teacher have very friendly atmosphere also.
Manish Kumar
10thA marvelous experience with Abhyas. I am glad to share that my ward has achieved more than enough at the Ambala ABHYAS centre. Years have passed on and more and more he has gained. May the centre flourish and develop day by day by the grace of God.
Archit Segal
7thAbhyas institute is one of the best coaching institute in the vicinity of Ambala Cantt area. The teachers of the institute are well experienced and very helpful in solving the problems of the students.The good thing of the institute is that it is providing extra classes for the students who are w...
Aman Kumar Shrivastava
10thAbout Abhyas metholodology the teachers are very nice and hardworking toward students.The Centre Head Mrs Anu Sethi is also a brilliant teacher.Abhyas has taught me how to overcome problems and has always taken my doubts and suppoeted me.
Shreya Shrivastava
8thIn terms of methodology I want to say that institute provides expert guidence and results oriented monitering supplements by requsite study material along with regular tests which help the students to improve their education skills.The techniques of providing education helps the students to asses...
Aman Kumar Shrivastava
10thThe experience was nice. I studied here for three years and saw a tremendous change in myself. I started liking subjects like English and SST which earlier I ran from. Extra knowledge gave me confidence to overcome competitive exams. One of the best institutes for secondary education.
Aman Kumar Shrivastava
10thMy experience was very good with Abhyas academy. I am studying here from 6th class and I am satisfied by its results in my life. I improved a lot here ahead of school syllabus.
Ayan Ghosh
8thBeing a parent, I saw my daughter improvement in her studies by seeing a good result in all day to day compititive exam TMO, NSO, IEO etc and as well as studies. I have got a fruitful result from my daughter.
Prisha Gupta
8thThird consective year,my ward is in Abhyas with nice experience of admin and transport support.Educational standard of the institute recumbent at satisfactory level. One thing would live to bring in notice that last year study books was distributed after half of the session was over,though study ...
