Related Experiment Video
Updated: Aug 13, 2026

Measurement of Carotenoids in Perifovea using the Macular Pigment Reflectometer
Published on: January 29, 2020
Agronomic problems related to provitamin A carotenoid-rich plants
1U.S. Department of Agriculture, Agriculture Research Service, U.S. Plant, Soil and Nutrition Laboratory, Cornell University, Ithaca, NY 14853-2901, USA.
Objectives:
Review how agricultural systems might be changed to increase the vitamin A density of diets in developing countries to provide sustainable solutions to vitamin A deficiency globally.
Design:
Develop agricultural systems that not only assure calorie adequacy for people, but also address vitamin A density in diets.
Settings:
Agricultural systems could be modified in some developing nations in ways that would provide adequate dietary amounts of provitamin A carotenoids from plant food sources.
Subjects:
Infants and children of low-income families are most at risk of developing vitamin A deficiency in developing countries.
Interventions:
Cropping systems could be modified to include more vegetable and fruit crops containing higher bioavailable amounts of provitamin A carotenoids in some countries. Additionally, cultural practices could be modified through education, agricultural extension and/or social marketing to insure that the bioavailable provitamin A carotenoid levels in food crops are optimized. Staple food crops could be improved as sources of provitamin A carotenoids by traditional plant breeding and/or by genetic engineering efforts.
Results:
Currently, many techniques are available to increase the vitamin A content of diets through sustainable food-based approaches. Agricultural approaches should be examined closely to finding sustainable food-based system solutions to vitamin A deficiency globally.
Conclusions:
The world community should strive to find food-based system approaches to eliminating vitamin A deficiency. Modifying agricultural systems in ways that will not only maximizing food production, but also insure nutritional adequacy of vitamin A is a desirable goal for many developing countries.
More Related Videos
05:03Quantitative Analysis of Dietary Vitamin A Metabolites in Murine Ocular and Non-Ocular Tissues Using High-Performance Liquid Chromatography
Published on: December 27, 2024
08:18Methodology for Studying Interactions of Vitamin A Membrane Receptors and Opsin Protein with their Ligands in Generating the Retinylidene Protein
Published on: October 4, 2024
Related Concept Videos
Key Elements for Plant Nutrition
Plant Breeding and Biotechnology
Photoreceptors and Plant Responses to Light
The Calvin Benson Cycle
Transgenic Plants
The first-ever transgenic plant was a tobacco plant developed in 1983 that showed resistance against the tobacco mosaic virus. Since then, many transgenic plants have been developed and commercialized for improving the agricultural, ornamental, and horticultural value of a crop plant. Transgenic...
Vitamins