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Related Concept Videos

Skeleton and Calcium Homeostasis01:21

Skeleton and Calcium Homeostasis

Calcium is not only the most abundant mineral in bone but also the most abundant mineral in the human body. Calcium ions are needed for bone mineralization, tooth health, heart rate regulation and strength of contraction, blood coagulation, the contraction of smooth and skeletal muscle cells, and the regulation of nerve impulse conduction. The average calcium level in the blood is about 10 mg/dL. When the body cannot maintain this level, a person will experience hypo or hypercalcemia.
Essential Minerals for Bone Health01:31

Essential Minerals for Bone Health

The minerals contained in all of the food we consume are essential for our organ systems. However, certain essential minerals, such as calcium, phosphorus, magnesium, manganese, and fluoride, largely affect bone health.
Calcium and Phosphorus
Calcium is a critical component of bones, especially in the form of calcium phosphate and calcium carbonate. Since the body cannot make calcium, it must be obtained from the diet. However, calcium cannot be absorbed from the small intestine without...
The Parathyroid Glands00:59

The Parathyroid Glands

The two pairs of parathyroid glands embedded within the posterior surface of the thyroid gland are restricted by a dense capsule around them. These glands comprise two distinct cell populations—parathyroid oxyphil and parathyroid principal cells- pivotal in calcium homeostasis.
Oxyphil cells, whose functions remain elusive, emerge during late puberty, adding a layer of complexity to the parathyroid gland's intricacies. In contrast, principal parathyroid cells undertake a vital role by producing...
Synthesis and Functions of Calcitonin00:51

Synthesis and Functions of Calcitonin

Calcitonin, a vital polypeptide hormone, regulates calcium levels within body fluids. It is released by the parafollicular cells, also known as C cells, situated in the follicular epithelium of the thyroid gland. Calcitonin responds to fluctuations in blood calcium levels and the influence of gastrointestinal hormones like gastrin and cholecystokinin.
The exact mechanisms by which calcitonin operates in calcium homeostasis remain elusive, but its significance is evident in several vital...
Role of Vitamins in Maintaining Bone Health01:25

Role of Vitamins in Maintaining Bone Health

The growth and maintenance of bone are regulated by a combination of nutritional factors, including vitamins, such as vitamin A, B12, C, D, and K.
Vitamin A
Vitamin A is involved in the process of bone remodeling. Retinoic acid, the active metabolite of Vitamin A, has nuclear receptors in osteoblasts and osteoclasts, which are involved in bone remodeling.
Vitamin B12
Vitamin B12 acts as a cofactor during the formation of osteoblast-related proteins, such as osteocalcin. Vitamin B12 plays a role...
Lipids: Dietary Sources and Requirements01:18

Lipids: Dietary Sources and Requirements

Lipids are an essential component of a balanced human diet. Triglycerides, which make up the majority of dietary lipids, are found in both saturated fats—commonly present in meat, dairy products, and certain tropical plants like coconut, and hydrogenated oils such as margarine and baking shortenings (trans fats)—and unsaturated fats, which are abundant in seeds, nuts, olive oil, and most vegetable oils. The main sources of cholesterol include egg yolks, various meats and organ meats, shellfish,...

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Related Experiment Video

Updated: May 12, 2026

The Preparation of Chicken Ex Ovo Embryos and Chorioallantoic Membrane Vessels as In Vivo Model for Contrast-Enhanced Ultrasound Imaging and Microbubble-Mediated Drug Delivery Studies
09:53

The Preparation of Chicken Ex Ovo Embryos and Chorioallantoic Membrane Vessels as In Vivo Model for Contrast-Enhanced Ultrasound Imaging and Microbubble-Mediated Drug Delivery Studies

Published on: February 9, 2021

Chicken eggshell as suitable calcium source at home.

Lucas R Brun1, Maela Lupo, Damián A Delorenzi

  • 1Bone Biology Laboratory, School of Medicine, Rosario National University, Rosario, Argentina. lbrun@unr.edu.ar

International Journal of Food Sciences and Nutrition
|April 24, 2013
PubMed
Summary
This summary is machine-generated.

Chicken eggshells are a viable dietary calcium (Ca) source for home use. Powdered eggshell, half an eggshell daily, can supplement calcium intake with minimal impact on food flavor and texture.

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Windowing Chicken Eggs for Developmental Studies
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Windowing Chicken Eggs for Developmental Studies
15:01

Windowing Chicken Eggs for Developmental Studies

Published on: October 1, 2007

Area of Science:

  • Nutritional Science
  • Food Science
  • Biochemistry

Background:

  • Dietary calcium deficiency is a prevalent health concern.
  • Identifying accessible and affordable calcium sources is crucial for public health.
  • Chicken eggshells represent an underutilized, natural source of calcium.

Purpose of the Study:

  • To investigate chicken eggshells as a practical dietary calcium source for home consumption.
  • To evaluate methods for processing eggshells for safe and effective calcium supplementation.
  • To assess the sensory impact (flavor and texture) of incorporating eggshell calcium into foods.

Main Methods:

  • Exploration of chemical and mechanical methods for processing eggshells into a usable form.
  • Sensory evaluation of fortified foods by a panel of volunteers under professional culinary guidance.
  • Quantification of calcium content in chicken eggshells.

Main Results:

  • A single chicken eggshell provides approximately 2.07 ± 0.18g of calcium.
  • Half an eggshell can fulfill the daily calcium requirements for adult humans.
  • Powdering eggshells and adding them to foods like bread, pizza, or spaghetti resulted in negligible changes to flavor and texture.

Conclusions:

  • Chicken eggshells are a readily available and effective source of dietary calcium.
  • Simple processing, such as powdering, allows for easy integration into common household foods.
  • Eggshell fortification offers a promising strategy to combat calcium deficiency without compromising palatability.