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Related Concept Videos

Key Elements for Plant Nutrition02:35

Key Elements for Plant Nutrition

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Like all living organisms, plants require organic and inorganic nutrients to survive, reproduce, grow and maintain homeostasis. To identify nutrients that are essential for plant functioning, researchers have leveraged a technique called hydroponics. In hydroponic culture systems, plants are grown—without soil—in water-based solutions containing nutrients. At least 17 nutrients have been identified as essential elements required by plants. Plants acquire these elements from the...
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Absorption of Nutrients01:19

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Absorption refers to taking dietary nutrients from the intestinal lumen for transportation throughout the body. After digestion in the small intestine, carbohydrates, proteins, and fats are broken down into simpler forms. These essential macronutrients and other vital substances, such as vitamins, minerals, and water, are then prepared for absorption into the bloodstream.
Enterocytes, which are specialized polar epithelial cells, line the mucosa of the small intestinal walls. These cells...
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Minerals01:26

Minerals

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Minerals are essential nutrients that the human body needs in small amounts to work properly. They play a vital role in many bodily functions, such as building strong bones and transmitting nerve impulses. Some minerals are needed for hormone production or to maintain a normal heartbeat. Major minerals include calcium, phosphorus, potassium, sulfur, sodium, chlorine, and magnesium, while trace minerals include iron, manganese, copper, iodine, zinc, cobalt, fluoride, and selenium.
 
Major...
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Vitamins01:30

Vitamins

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Vitamins, derived from the Latin word for life, are essential organic substances required in small quantities for optimal growth and overall well-being. Unlike other organic nutrients, vitamins don't act as sources of energy or building materials but rather facilitate these nutrients' utilization by the body. Vitamins are predominantly coenzymes, assisting enzymes in specific chemical actions, like the oxidation of glucose for energy involving B vitamins. Most vitamins are not produced...
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Carbohydrates: Dietary Sources and Requirements01:15

Carbohydrates: Dietary Sources and Requirements

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Carbohydrates are predominantly obtained from plant sources. With the exception of lactose found in milk and insignificant glycogen amounts in meat, most consumed carbohydrates have plant origins. Monosaccharides and disaccharides, or sugars, can be sourced from fruits, honey, milk, sugar cane, and sugar beets. Grains and vegetables are rich in the polysaccharide starch. Two types of polysaccharides provide fiber: cellulose, which is abundant in many vegetables, forms undigestible roughage or...
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Classifying Matter by Composition03:35

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Matter: Pure Substances and Mixtures
According to its composition, the matter can be classified into two broad categories — pure substances and mixtures. 
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Quantifying Plant Soluble Protein and Digestible Carbohydrate Content, Using Corn Zea mays As an Exemplar
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The 6M Classification of Nutrients.

Sanjay Kalra1, Madhur Verma2, Nitin Kapoor3

  • 1Department of Endocrinology, Bharti Hospital, Karnal, India; University Centre for Research & Development, Chandigarh University, Mohali, India.

JPMA. the Journal of the Pakistan Medical Association
|March 27, 2025
PubMed
Summary

This opinion piece proposes a new six-layered 6M hierarchical classification for nutrients, including mega, macro, meso, micro, micro-bio, and minimization of anti-nutrients, to better understand nutrition.

Keywords:
Diabetes, medical nutrition therapy, nutrition, obesity

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Area of Science:

  • Nutritional Science
  • Dietary Research

Background:

  • Current nutrient classification into macro and micronutrients is insufficient.
  • Nutrition is a complex and often confusing subject for many.

Purpose of the Study:

  • To propose a novel, comprehensive six-layered hierarchical classification of nutrients.
  • To offer a more complete understanding of nutritional science and dietary components.

Main Methods:

  • Conceptual framework development.
  • Literature review on existing nutrient classifications.
  • Proposal of the six-layered 6M hierarchical model.

Main Results:

  • Introduction of the 6M hierarchical classification: Mega, Macro, Meso, Micro, Micro-bio, and Minimization of anti-nutrients.
  • The proposed classification provides a more nuanced understanding of nutrient categories.

Conclusions:

  • The 6M classification offers a superior framework for understanding the spectrum of nutritional foods.
  • This model enhances clarity and completeness in the field of nutrition.