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Related Concept Videos

Proteins: Dietary Sources and Requirements01:28

Proteins: Dietary Sources and Requirements

Consuming animal-based products offers high-quality proteins that contain optimal levels and combinations of essential amino acids, crucial for tissue repair and growth. Foods like eggs, milk, fish, and most meats are a source of complete proteins. Legumes and cereals are abundant in proteins; however, they typically lack a full range of essential amino acids. As a result, they are considered incomplete protein sources. Some plant sources like soybeans, quinoa, and amaranth do contain complete...
Chronic Kidney Disease III: Interprofessional Care01:28

Chronic Kidney Disease III: Interprofessional Care

Chronic kidney disease (CKD) requires collaborative and comprehensive management. CKD progresses through stages and can lead to end-stage kidney disease (ESKD) if untreated. Interprofessional collaboration and patient education are crucial, enabling patients to manage their health and improve their quality of life.Diagnostic approach for chronic kidney diseaseThe diagnosis of CKD primarily focuses on the glomerular filtration rate (GFR), which assesses kidney function by measuring how well...
Overview of Protein Metabolism01:21

Overview of Protein Metabolism

Proteins are broken down into amino acids during digestion. Unlike fats and carbohydrates, which are stored for later use, proteins are not. Instead, amino acids are either used to produce ATP through oxidation or contribute to the creation of new proteins for the growth and repair of the body. Any surplus amino acids from the diet are converted into glucose or triglycerides rather than excreted.
Amino acids play various roles in the body once they are absorbed into cells. They are restructured...
Protein Absorption01:12

Protein Absorption

Proteins in the gastrointestinal tract typically come from food, but they can also originate from disintegrated cells or secreted enzymes. In the stomach, the enzyme pepsin breaks down these proteins into polypeptides. The fragments then move into the duodenum as a semi-fluid mass called chyme. Pancreatic proteases, such as trypsin and chymotrypsin, and intestinal brush border enzymes like carboxypeptidases further dismantle the polypeptides into tripeptides, dipeptides, and free amino acids.
Protein-Protein Interfaces02:04

Protein-Protein Interfaces

Many proteins form complexes to carry out their functions, making protein-protein interactions (PPIs) essential for an organism's survival. Most PPIs are stabilized by numerous weak noncovalent chemical forces. The physical shape of the interfaces determines the way two proteins interact. Many globular proteins have closely-matching shapes on their surfaces, which form a large number of weak bonds. Additionally, many PPIs occur between two helices or between a surface cleft and a polypeptide...
Protein-protein Interfaces02:04

Protein-protein Interfaces

Many proteins form complexes to carry out their functions, making protein-protein interactions (PPIs) essential for an organism's survival. Most PPIs are stabilized by numerous weak noncovalent chemical forces. The physical shape of the interfaces determines the way two proteins interact. Many globular proteins have closely-matching shapes on their surfaces, which form a large number of weak bonds. Additionally, many PPIs occur between two helices or between a surface cleft and a polypeptide...

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Related Experiment Video

Updated: May 17, 2026

'Boden Food Plate': Novel Interactive Web-based Method for the Assessment of Dietary Intake
04:46

'Boden Food Plate': Novel Interactive Web-based Method for the Assessment of Dietary Intake

Published on: September 18, 2018

Protein intakes in India.

Sumathi Swaminathan1, Mario Vaz, Anura V Kurpad

  • 1St John's Research Institute, Bangalore, India. sumathi@sjri.res.in

The British Journal of Nutrition
|October 31, 2012
PubMed
Summary

Indian diets rely heavily on cereals, leading to poor protein quality. Many populations, especially in rural areas, risk inadequate protein intake due to low digestibility and essential amino acid deficiencies.

Area of Science:

  • Nutritional Science
  • Public Health Nutrition

Background:

  • Indian diets predominantly source protein (approx. 60%) from cereals, which are known for low digestibility and quality.
  • National Nutrition Monitoring Board (NNMB) surveys over 25 years highlight protein intake patterns in diverse Indian populations (urban, rural, slum, tribal).

Purpose of the Study:

  • To evaluate the adequacy of protein intake and quality in various Indian population groups, particularly disadvantaged ones.
  • To assess the risk of protein deficiency based on protein digestibility corrected amino acid score (PDCAAS) and protein:energy (PE) ratios.

Main Methods:

  • Analysis of dietary surveys focusing on protein intake (gm/kg/day) and quality metrics like PDCAAS.
  • Evaluation of protein adequacy using the protein:energy (PE) ratio, referencing WHO/FAO/UNU 2007 guidelines.

Related Experiment Videos

Last Updated: May 17, 2026

'Boden Food Plate': Novel Interactive Web-based Method for the Assessment of Dietary Intake
04:46

'Boden Food Plate': Novel Interactive Web-based Method for the Assessment of Dietary Intake

Published on: September 18, 2018

Main Results:

  • Protein intake averages around 1 gm/kg/day for disadvantaged populations (slums, tribals, rural sedentary).
  • PDCAAS reveals inadequate protein quality, with lysine as the first limiting amino acid, especially in rural and tribal groups.
  • Approximately one-third of the sedentary rural population is at risk of inadequate protein intake, compounded by low BMI and poor fruit/vegetable consumption.

Conclusions:

  • Enhancing protein intake quality is crucial for rural India.
  • The overall dietary quality, including protein, presents a significant public health challenge in India.