CATDOLL : CATDOLL: Fish without purine? Fish with low purine?

1. Fish that do not contain purine?

There are salmon, osmanthus fish, eel, etc., but there is no fish with the lowest purine content.

The purine content of salmon is 30-75 mg per 100 g of fish; the purine content of osmanthus fish is 55 mg per 100 g of fish; the purine content of eel is 92.8 mg per 100 g of fish. All of them are fish with relatively low purine content.

2. Fish low in purine?

Fish with low purine content include salmon, sweet-scented osmanthus fish, eel, etc.

The purine content of salmon is 30-75mg per 100g of fish; the purine content of osmanthus fish is 55mg per 100g of fish; the purine content of eel is 92.8mg per 100g of fish. All of them are fish with relatively low purine content.

3. What are the fishes that are low in purine?

Fish low in purine mainly include the following:

First, freshwater fish, such as carp, crucian carp, grass carp, etc. These fish usually live in clear freshwater environments and do not ingest too much purine substances, so they contain lower purines.

Second, marine fish with low purine content include sea bass, cod and salmon. These fish live in the ocean and have a wider range of food sources, so the purine content is relatively low. It should be noted that there are certain differences in the purine content of different types of fish. For example, crustacean seafood such as shrimp and crab has a high purine content and should be avoided as much as possible. At the same time, purine content is not the only factor that affects physical health, and you should choose the right food according to your own situation.

4. What is the difference between the structures of adenine and guanine?

1. Different molecular structures

1. Guanine: It is composed of a pyrimidine ring and an imidazole ring. It is a type of purine. It has a characteristic double ring structure composed of carbon and nitrogen atoms and is connected to cytosine by three hydrogen bonds.

2. Adenine: binds to thymine through two hydrogen bonds.

2. Different types

1. Guanine: It is a purine organic compound.

2. Adenine: It is a nitrogen-containing heterocyclic derivative.

3. Different functions

1. Guanine: Guanine not only has multiple isomers, but also has the smallest adiabatic ionization potential among the four DNA bases. It exists in seabird droppings in a free or bound state. It is one of the five different nucleobases and exists in both deoxyribonucleic acid and ribonucleic acid.

2. Adenine: Adenine and its derivatives have multiple biochemical functions, participating in cellular respiration, participating in the synthesis of energy-rich adenosine triphosphate (ATP), coenzyme nicotinamide adenine dinucleotide (NAD) and flavin adenine dinucleotide (FAD). It is also involved in the synthesis of proteins, DNA and RNA.

5. How is purine pronounced?

Purine

A crystalline base C 5 H 4 N 4 formed by the fusion of a pyrimidine ring and an imidazole ring. It is prepared from uric acid and is the parent of several compounds derived from uric acid.

6. What are the dangers of purine?

First of all, purine is a metabolite in the human body, and if it is not excreted from the body, it will cause some harm to the body's organs. If purine is deposited too much in the human body, it will form urate crystals, invade the joints, and cause gout. If purine is deposited too high in the kidneys, it will also cause kidney stones and affect kidney function. If purine is not controlled well, it may even affect the functional organs of the whole body.

7. How is purine produced?

Top three

Purine is an organic compound present in the human body. It exists in the form of purine nucleotides. After metabolism, purine will turn into uric acid, and excessive uric acid will cause hyperuricemia.

Purine plays a very important role in the human body, including energy supply, metabolic regulation, etc. The sources of purine are endogenous purine and exogenous purine. 80% of endogenous purine comes from the oxidative decomposition of nucleic acids, and exogenous purine comes from food intake.

8. Can’t remember the letters of the four purines, including guanine and adenine?

The letter A is for adenine, the letter T is for thymine, the letter G is for guanine, and the letter C is for cytosine.

1. Adenine (A, AdenIne), also known as 6-aminopurine, is one of the four nucleobases that make up DNA and RNA molecules.

Adenine is a nitrogen-containing heterocyclic derivative and a component of nucleic acids.

2. Thymine is a pyrimidine base isolated from the thymus. It is easily soluble in hot water. Ultraviolet radiation can cause dimers to form between two adjacent thymine bases in the same chain of the DNA molecule, affecting the double helix structure of DNA and hindering its replication and transcription functions.

3. Guanine, a biological term, alias: guano, guanine, 2-amino-6-hydroxypurine, 2-aminohypoxanthine, abbreviation: G.

4. Cytosine, scientific name is 4-amino-2-carbonylpyrimidine, CAS number is 71-30-7, molecular formula is C4H5N3O. One of the main base components in nucleic acid (DNA and RNA). Cytosine can be synthesized from dithiouracil, concentrated ammonia and chloroacetic acid as raw materials. It is used as a drug intermediate.

9. What is the formation mechanism of purine?

The formation of purine, the main source of endogenous purine is the oxidation and decomposition of nucleic acid, which will undergo metabolic changes to form the product uric acid. The source of exogenous purine is mainly from food, accounting for 20% of the total purine. Uric acid has no physiological function in the human body. Under normal circumstances, 2/3 of the uric acid produced in the body is excreted by the kidneys, and the remaining 1/3 is excreted from the intestines.

10. Fish with low purine?

Fish with low purine content include salmon, osmanthus fish, eel, etc. There is no fish with the lowest purine content.

The purine content of salmon is 30-75 mg per 100 g of fish; the purine content of osmanthus fish is 55 mg per 100 g of fish; the purine content of eel is 92.8 mg per 100 g of fish. All of them are fish with relatively low purine content.

Relatively speaking, aquatic products such as anchovies, sardines, sea bass, shrimps, and shellfish still have higher purine content.