Examples of dietary proteins
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Common Examples of Dietary Proteins
Dietary proteins come from a wide variety of animal and plant sources. Common examples include meat (such as red meat and chicken), fish, eggs, milk and dairy products (including both full-fat and low-fat milk, whey, and cheese), and plant-based sources like legumes and pulses (such as beans and lentils) Mangano2017Korhonen2003Shevkani2021+2 MORE. These foods are widely recognized as primary contributors to daily protein intake.
Animal-Based Protein Sources
Animal-based proteins are found in foods like red meat, chicken, fish, eggs, and dairy products. Dairy proteins, including those from milk, whey, and cheese, are especially noted for their high quality and for containing bioactive peptides that can have health-promoting effects Mangano2017Korhonen2003Shevkani2021+1 MORE. Eggs and various meats are also rich in essential amino acids, making them important for growth, muscle maintenance, and overall health Korhonen2003Shevkani2021Daniel2024.
Plant-Based Protein Sources
Plant-based proteins are primarily found in legumes and pulses, such as beans, lentils, and peas. These sources are important for those seeking alternatives to animal proteins and can provide many of the essential amino acids needed for health, though sometimes in different proportions compared to animal sources Mangano2017Shevkani2021Morgan2023+1 MORE. Plant proteins are also being increasingly recognized for their role in sustainable diets and their potential health benefits, especially for older adults Shevkani2021Morgan2023.
Novel and Alternative Protein Sources
Beyond traditional animal and plant sources, new protein options are emerging to meet global food demands. These include proteins derived from algae, yeast, insects, and bacteria. Such sources are being explored for their sustainability and ability to provide essential amino acids, as well as their potential to be used in innovative food products .
Functional and Bioactive Proteins
Some dietary proteins, especially those from milk and eggs, contain bioactive peptides that can be released during digestion or food processing. These peptides may have additional health benefits, such as supporting cardiovascular, immune, and metabolic health Korhonen2003Jahan-Mihan2011. Fermented dairy products, like certain cheeses and yogurts, are notable for containing these beneficial peptides .
Conclusion
Dietary proteins are found in a wide range of foods, including animal sources like meat, fish, eggs, and dairy, as well as plant sources such as legumes and pulses. New protein sources like algae, yeast, and insects are also being developed to support global nutrition needs. Both animal and plant proteins play important roles in health, and the choice of protein sources can be tailored to individual dietary preferences and sustainability goals Mangano2017Korhonen2003Shevkani2021+3 MORE.
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