Claire Thompson
It is a common misconception that red chicken meat is unsafe to eat. The red colour is usually due to pigment from the bone marrow seeping through the bones and into the surrounding area, especially in younger chickens, and can also be caused by freezing. The meat is safe to eat as long as it has reached a safe minimum internal temperature of 165 °F. However, it is important to note that colour is not a reliable indicator of safety, and other factors such as texture, taste, odour, and the presence of slime should also be considered.
| Characteristics | Values |
|---|---|
| Colour of meat | Safely cooked poultry can vary in colour from white to pink to tan |
| Cause of redness | Pigment from bone marrow seeping through bones into surrounding area; oxidation; chemical changes in myoglobin |
| Safety | Safe to eat when all parts have reached a minimum internal temperature of 165 °F |
| Meat temperature measurement | Use a food thermometer to check the internal temperature in the innermost part of the thigh and wing and the thickest part of the breast |
| Meat temperature | 160ºF to 165ºF |
| Meat doneness | Flaky, shredded |
| Myoglobin | A protein that carries oxygen into muscles; higher myoglobin levels lead to darker meat colour |
| Dark meat | Healthier, containing larger amounts of minerals such as iron and zinc |
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What You'll Learn
- The red colour of chicken meat is due to the expansion of marrow in the bones
- Meat from younger chickens is more likely to be red due to thinner, more porous bones
- Myoglobin, a protein that carries oxygen, is responsible for the red colour of meat
- Chicken meat can be safely cooked to 160ºF to 165ºF without drying out
- Chicken with higher pH (lower acidity) will require higher temperatures to turn clear
The red colour of chicken meat is due to the expansion of marrow in the bones
The colour of meat is influenced by several factors, including the age of the animal, species, sex, diet, and exercise. Meat from older animals tends to be darker due to higher myoglobin levels, and exercised muscles are darker in colour.
The red colour of chicken meat near the bone is caused by the expansion of marrow in the bones, which can occur when the chicken has been frozen. This is a harmless phenomenon, and the meat is safe to eat as long as it has reached a safe minimum internal temperature of 165 °F.
Young chickens, typically between six to eight weeks old, have hollow bones that are thinner and more porous than older chickens. During cooking, the purple bone marrow, containing myoglobin, can leak into the surrounding meat, resulting in a red colouration. Myoglobin is a protein that carries oxygen into the muscles and is responsible for the red colour in meats like steak.
It is important to note that colour alone is not a reliable indicator of doneness or safety when cooking chicken. The best way to ensure that chicken is cooked properly is to use a food thermometer to check the internal temperature. A finished temperature of 160ºF to 165ºF is recommended for chicken, and all parts of the chicken should reach at least 165 °F to be safe to eat.
Additionally, certain cooking techniques, such as smoking, which uses lower temperatures, can contribute to the pink or red colour in chicken meat. The pink "juices" that may be observed are typically a result of moisture mixing with myoglobin and are not an indication of undercooked chicken.
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Meat from younger chickens is more likely to be red due to thinner, more porous bones
The colour of meat is influenced by several factors, including the age of the animal. Meat from younger animals tends to be redder due to the presence of myoglobin, a protein that stores oxygen in the muscle tissue. Younger chickens have thinner and more porous bones, which can result in the seepage of bone marrow into the surrounding meat, causing discolouration. This is particularly common in broiler-fryer chickens, which are typically between six to eight weeks old.
Myoglobin is one of the key pigments responsible for the colour of meat. When exposed to oxygen, myoglobin produces a bright red colour. The presence of myoglobin in the bone marrow of younger chickens can lead to discolouration of the surrounding meat. This is purely an aesthetic issue and does not indicate any safety concerns.
The darkening of meat around the bones in younger chickens is a natural occurrence and is not a cause for concern. It is important to note that the meat is still safe to consume as long as it has reached a safe minimum internal temperature of 165 °F. This can be measured using a food thermometer to ensure food safety.
To minimise discolouration, it is recommended to use freezer-type wrapping and expel as much air as possible from the package. Additionally, the meat can be marinated in citrus or vinegar to introduce a high-acid environment, reducing the risk of a pink hue. Alternatively, deboning the meat before cooking can help avoid any discolouration caused by the bones.
It is worth mentioning that the pink or red colour observed in chicken meat is not an accurate indicator of doneness or safety. Other factors, such as cooking techniques, storage conditions, and the presence of vegetables containing nitrites, can also influence the colour of the meat. Therefore, relying solely on visual cues can be misleading, and the use of a food thermometer is strongly recommended to ensure food safety.
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Myoglobin, a protein that carries oxygen, is responsible for the red colour of meat
It is understandable to be concerned about the redness of meat, especially chicken, as colour is the single most important factor for consumers when deciding whether meat is fresh and safe to eat. However, it is important to note that the redness of meat is not always an indicator of its safety.
The redness of meat is primarily due to myoglobin, an iron- and oxygen-binding protein found in the cardiac and skeletal muscle tissue of vertebrates and almost all mammals. Myoglobin is similar to haemoglobin, which carries oxygen from the lungs to the muscle cells, in that it stores oxygen in muscle cells. Myoglobin has a higher affinity for oxygen than haemoglobin and is responsible for the colour of meat.
Myoglobin has three natural colours depending on its exposure to oxygen and the chemical state of the iron. When no oxygen is present, the meat appears purple-red, as seen in vacuum-packaged meat. This is the deoxymyoglobin state. When exposed to oxygen, the meat turns bright red due to the formation of oxymyoglobin, which is the most common colour of meat in retail displays. Meat appears tan or brown when only very small amounts of oxygen are present, such as when two bright red pieces of meat are stacked on top of each other, excluding oxygen.
The colour of meat can also be influenced by other factors such as the age of the animal, species, sex, diet, and exercise. Older animals tend to have higher myoglobin levels, resulting in darker meat. Exercised muscles are also darker in colour, leading to variations in colour within the same animal.
In the case of chicken, a little redness near the bone is common, especially in younger chickens. This redness is typically due to the expansion of marrow in the bones, which can occur during freezing or when the bone is cracked or broken during handling. This is purely an aesthetic issue and does not affect the safety of the meat. As long as the chicken has reached a safe minimum internal temperature of 165 °F, as measured with a food thermometer, it is safe to consume, even if some redness is present.
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Chicken meat can be safely cooked to 160ºF to 165ºF without drying out
The colour of meat and poultry can vary due to several factors, including the age of the animal, species, sex, diet, exercise, and oxygen exposure. Freshly cut meat typically exhibits a purplish hue due to the presence of myoglobin, a pigment that, when exposed to oxygen, turns bright red. Meat from older animals tends to be darker because myoglobin levels increase with age. Exercised muscles are also darker in colour, resulting in variations within the same animal.
When it comes to chicken, a little redness near the bone is common, especially in younger birds. This occurs when the bone is cracked or broken during handling, allowing the red bone marrow to seep into the surrounding meat. Freezing can also cause the bone marrow to expand and discolour the bone and nearby meat. These colour variations do not indicate spoilage or safety concerns. Proper cooking techniques, such as reaching the recommended internal temperature, are crucial for ensuring safe and juicy chicken.
Chicken meat can be safely cooked to an internal temperature of 160ºF to 165ºF without drying out. At 165ºF (74ºC), all foodborne bacteria, including the stubborn salmonella bacteria, are instantly killed, making it safe to consume. However, it is important to note that the chicken's appearance may still vary, with pink or reddish hues occurring naturally in any meat.
To ensure the chicken is cooked properly, it is recommended to use a food thermometer to measure the internal temperature. This is especially important for dark meat, such as chicken legs and thighs, which have more connective tissue and require higher temperatures to dissolve properly. The recommended internal temperature for dark meat is 170-175ºF (77-79ºC). However, some cooks prefer to cook chicken legs to an even higher temperature, around 185-195ºF, to soften the gristle and make the meat fall off the bone.
While some sources suggest that chicken legs can be challenging to gauge with a thermometer due to their thinner meat, it is crucial to ensure that the chicken reaches a safe internal temperature. Overcooking chicken can lead to dryness and a loss of flavour, so finding the right balance between food safety and moisture retention is essential.
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Chicken with higher pH (lower acidity) will require higher temperatures to turn clear
Chicken meat has become a significant source of protein for human consumption. However, the quality of the meat is not always consistent, especially since pH values that are too low or too high are often observed. The pH level of water is measured on a scale from 0 to 14, with 7 being neutral. Water with a pH lower than 7 is considered acidic, while water with a pH higher than 7 is considered alkaline.
Additionally, the red color in chicken meat is not an accurate indicator of doneness or safety. The red coloring can be attributed to the expansion of marrow in frozen chicken bones, which can also color the surrounding meat. Meat that has been safely stored in the refrigerator or freezer can exhibit normal color changes, and these variations do not imply spoilage.
To ensure the safety of chicken, it is recommended to use a food thermometer to check the internal temperature. For chicken to be considered safely cooked, it should reach a minimum internal temperature of 165 °F in the thickest parts, including the innermost part of the thigh, wing, and breast. This temperature ensures that all meat, even pink portions, are safe to consume.
Furthermore, dark meat on chicken, such as drumsticks, can handle higher temperatures without drying out due to its higher fat content. The presence of more tendons, connective tissue, and gristle in these cuts may make it challenging to achieve an accurate temperature reading. A temperature range of 185 to 195 °F is suggested for dark meat to soften the gristle and make the meat easier to pull from the bone.
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Frequently asked questions
Yes, it is safe to eat chicken with red meat. The red colour is caused by pigment from the bone marrow seeping into the surrounding meat, which is common in younger chickens with thinner and more porous bones.
The best way to check if your chicken is cooked is to use a food thermometer. The chicken is cooked when it reaches an internal temperature of 165 °F (74 °C).
Chicken meat can appear red due to oxidation, the chemical changes in myoglobin due to oxygen content during refrigerator storage. It can also be caused by pigment from the bone marrow seeping into the surrounding meat, which is more common in younger chickens.
To prevent chicken meat from turning red, you can debone the meat before cooking or change the pH by marinating the meat with citrus or vinegar to lower the acidity.
