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प्रश्न
Write ‘four’ physical methods of preserving food materials
उत्तर
Food preservatives
-
Chemicals that prevent food from spoilage due to microbial growth
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Example: Table salt, vegetable oil, sodium benzoate (C6H5COONa), salts of propanoic acid
- Physical methods:
a. By removal of heat
b. By addition of heat
c. By removal of water
d. By irradiation
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संबंधित प्रश्न
Draw structure of BHT.
Which one of the following is a food preservative?
Equanil, Morphine, Sodium benzoate
Mr. Roy, the principal of one reputed school organized a seminar in which he invited parents and principals to discuss the serious issue of diabetes and depression in students. They all resolved this issue by strictly banning the junk food in schools and to introduce healthy snacks and drinks like soup, lassi, milk etc. in school canteens. They also decided to make compulsory half an hour physical activities for the students in the morning assembly daily. After six months, Mr. Roy conducted the health survey in most of the schools and discovered a tremendous improvement in the health of students.
After reading the above passage, answer the following :
(i) What are the values (at least two) displayed by Mr. Roy ?
(ii) As a student, how can you spread awareness about this issue ?
(iii) What are tranquillizers ? Give an example.
(iv) Why is use of aspartame limited to cold foods and drinks ?
On the occasion of World Health Day, Dr. Satpal organized a ‘health camp’ for the poor farmers living in a nearby village. After check-up, he was shocked to see that most of the farmers suffered from cancer due to regular exposure to pesticides and many were diabetic. They distributed free medicines to them. Dr. Satpal immediately reported the matter to the
National Human Rights Commission (NHRC). On the suggestions of NHRC, the government decided to provide medical care, financial assistance, setting up of super-speciality hospitals for treatment and prevention of the deadly disease in the affected villages all over India.
(i) Write the values shown by
(a) Dr. Satpal
(b) NHRC
(ii) What type of analgesics are chiefly used for the relief of pains of terminal cancer ?
(iii) Give an example of artificial sweetener that could have been recommended to diabetic patients
Why do we require artificial sweetening agents?
What are food preservatives?
Why is use of aspartame limited to cold foods and drinks?
Name a sweetening agent used in the preparation of sweets for a diabetic patient.
What problem arises in using alitame as artificial sweetener?
Explain any two chemical methods of food preservation.
Write one example each of Antacids.
Which of the following chemicals can be added for sweetening of food items at cooking temperature and does not provide calories?
Sugar is the main source of energy as it produces energy on metabolic decomposition. But these days low calorie drinks are more popular, why?
What is the difference between saccharin and saccharic acid?
Name two α-amino acids which form a dipeptide which is 100 times more sweet than cane sugar?
Aspartame is unstable at cooking temperature, where would you suggest aspartame to be used for sweetening?
Sodium salts of some acids are very useful as food preservatives. Suggest a few such acids.
Assertion: Preservative are added to food items.
Reason: Preservatives inhibit the growth of microorganisms.
Of the following properties about thiosulphate, which one is not applicable?
Rayon is:
Which synthetic sweetener is 100 times sweeter than cane sugar?
Which of the following is a naturally occurring antioxidant?
