Cold water or hot water for stewing bird's nest
It is recommended to add cold water.
Cold water is more gentle, bird's nest stewed in cold water is more evenly heated, so that the nutrients can be slowly precipitated, taste and nutrition will be better; and if you directly add boiling water stewing, will lead to uneven heating of bird's nest, which some of the active ingredients are reduced, is not conducive to the precipitation of the nutrients, the taste and nutrition will be relatively poor.
Bird's nest soaked in cold water or warm water
The water used to soak bird's nest is not suitable for hot water, because hot water can easily destroy the nutrients contained in the bird's nest, which affects the taste and nutritional value of the bird's nest, so it's best to use warm water in the winter season, and other seasons can be used with cold water. At the same time, it is better to use purified soft water, pure water and plain water for soaking, if it is warm water or even hot water, it will damage the nutrients of the bird's nest and make the bird's nest lose its nutrients.
Precautions for soaking bird's nest
1. Don't use hot water to avoid destroying the active proteins in bird's nest.
2. Be sure to use pure water, which can ensure the purity and permeability of the water, and can make the bird's nest soak better.
3. In the middle, you can change the water a few more times.
Nutritional Composition of Bird's Nest
1. Amino Acid Types and Contents
Bird's nest is rich in amino acids, rich in phenylalanine, valine, leucine, tyrosine and arginine. The hydrolyzed amino acid content of bird's nest reaches 42.272%, and the essential amino acid content accounts for 42% of the total amino acid content. Meanwhile, the amino acid (aspartic acid and glutamic acid) and the amino acid (tyrosine and phenylalanine) with aroma characteristics have high content, which indicates that bird's nest has a delicious taste. The nutritional value of food mainly depends on the type, quantity and proportion of amino acids contained. The Food and Agriculture Organization of the United Nations (FAO) and the World Health Organization (WHO) have proposed a reference pattern spectrum of essential amino acids in food, which stipulates that the mass ratio of essential amino acids to total amino acids as well as the mass ratio of essential amino acids to non-essential amino acids are 40% and 60% respectively.
2. Protein
Bird's nest has a high protein content, but it is closely related to its species. The protein content of Malaysian Golden Bird's Nest is 50.26%.
3. Sialic acid
Sialic acid, also known as bird's nest acid, is the main bioactive ingredient of bird's nest, which mainly exists in the form of N-acetylneuraminic acid in bird's nest. It is reported that the content of salivary acid in general bird's nest can reach more than 7%, which is also the means of preliminary identification of genuine and fake bird's nest.