Mayonnaise Emulsifying Property Explained
Mayonnaise is a stable emulsion, typically of oil and vinegar or lemon juice. An emulsion is a mixture of two liquids that normally don't mix, like oil and water (which is a major component of vinegar/lemon juice). The stability of this mixture depends on an emulsifying agent.
Lecithin's Role in Emulsification
- Lecithin, primarily found in egg yolks (a key ingredient in mayonnaise), acts as a powerful emulsifier.
- Lecithin molecules have a unique structure: one part attracts water (hydrophilic) and the other attracts oil (hydrophobic or lipophilic).
- This allows lecithin to surround tiny oil droplets suspended in the water-based ingredients, forming a barrier that prevents the oil droplets from coalescing and separating from the mixture. This creates the smooth, creamy texture characteristic of mayonnaise.
Why Other Options Are Incorrect
- Bromolein is an enzyme found in pineapple, known for protein digestion, not emulsification in food.
- Pepsin is a digestive enzyme in the stomach that breaks down proteins.
- Ovaglobulin is a protein found in egg white, involved in structure but not the primary emulsifier in mayonnaise formation.
Therefore, the emulsifying property of mayonnaise is specifically attributed to Lecithin.
Important Questions from Agriculture
Consider the following States:
1. Arunachal Pradesh
2. Kerala
3. Himachal Pradesh
4. Tripura
How many of the above are generally known as tea- producing States?
How is permaculture farming different from conventional chemical farming?
1. Permaculture farming discourages monocultural practices but in conventional chemical farming, monoculture practices are predominant.
2. Conventional chemical farming can cause an increase in soil salinity but the occurrence of such phenomenon is not observed in permaculture farming.
3. Conventional chemical farming is easily possible in semi-arid regions but permaculture farming is not so easily possible in such regions.
4. Practice of mulching is very important in permaculture farming but not necessarily so conventional chemical farming
Select the correct answer using the code given below.
With reference to ‘palm oil’, consider the following statements:
1. The palm oil tree is native to Southeast Asia.
2. Palm oil is a raw material for some industries producing lipstick and perfumes.
3. Palm oil can be used to produce biodiesel.
Which of the statements given above are correct?
In the context of India’s preparation for Climate-Smart Agriculture, consider the following statements :
1. The ‘Climate-Smart Village’ approach in India is a part of a project Jed by the Climate Change, Agriculture and Food Security (CCAFS), an international research programme.
2. The project of CCAFS is carried out under Consultative Group on ‘International Agricultural Research (CGIAR) headquartered in France.
3. The International Crops Research Institute for the Semi-Arid Tropics (ICRISAT) in India is one of the CGIAR’s research centres.
Which of the statements given above are correct?
With reference to 'Initiative for Nutritional Security through Intensive Millets Promotion', which of the following statements is/are correct?
1. This initiative aims to demonstrate the improved production and post-harvest technologies, and to demonstrate value addition techniques, in an integrated manner, with cluster approach.
2. Poor, small, marginal and tribal farmers have larger stake in this scheme.
3. An important objective of the scheme is to encourage farmers of commercial crops to shift to millet cultivation by offering them free kits of critical inputs of nutrients and microirrigation equipment.
Select the correct answer using the code given below.
