Related Experiment Video
Updated: Jun 11, 2026

Quantification of Heavy Metals and Other Inorganic Contaminants on the Productivity of Microalgae
Published on: July 10, 2015
Towards ensuring the safety of vitamins and minerals
1Department of Biochemistry, University of Basel, Vesalianum, Vesalgasse 1, 4002, Basel, Switzerland. paul.walter@unibas.ch
Abstract:
Today, there is a clear need for a risk assessment for vitamins and minerals because the total daily intake for nutrients through regular food, fortified products (Functional Food) and supplements may very well reach critical levels for an individual consumer. Several expert panels of the European Union, the UK, Japan and China will publish their reports on this issue in the near future. The Food and Nutrition Board of the Institute of Medicine of the US/Canada has already published a new standard. The board has defined the so-called Tolerable Upper Intake Level (UL) as the highest level of daily intake that is likely to pose no risk of adverse health effects to almost all individuals in the general population. Their determination involves a multi-step risk assessment procedure on the basis of mainly human data. Several daily UL values that have already been published are of special interest, e.g. 1 mg folic acid, 50 microg vitamin D, 1 g vitamin E, 2 g vitamin C, 2.5 g calcium, 350 mg magnesium.
Related Concept Videos
Essential Minerals for 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...
Prevention of Further Absorption of Poison
Role of Vitamins in Maintaining Bone Health
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...
Vitamins
Mineral, Vitamin and Water Absorption
Minerals

