Biofortification: It is the process by which the nutritional value of food crops is enhanced by various methods including plant breeding, agronomic practices and modern biotechnological techniques.

• Basically, biofortification is the process of growing crops to increase nutrition value from the seed on.
• It is different from food fortification which involves improving the nutritional content of food crops during the processing stage.
• In biofortification, the nutritional value of crops is improved during the plant growth stage, i.e., nutritional micronutrient content is embedded in the crop being grown.
• Crops can be biofortified through selective breeding or genetic engineering. In India, biofortification is done exclusively through selective breeding. 
• The focus of biofortification research is iron, zinc and vitamin A deficiencies. These are the micronutrients whose deficiencies affect the most number of people worldwide.
  • In India, the focus is on pearl millet (iron), wheat (zinc), sorghum (iron), rice (zinc), cowpeas (iron) and lentils (iron and zinc). 
• Currently, biofortified pearl millet, rice, and wheat are available to farmers in India.

Techniques of Biofortification

The major techniques or methods by which crops can be biofortified are mentioned below.

• Agronomic practices: This involves the application of fertilizers to increase the quantity of micronutrients in plants grown in soil conditions that are poor in such micronutrients/minerals.
• Conventional plant breeding: This involves traditional breeding methods by which sufficient genetic variations are produced for the desired trait in crops such as high content of any micronutrient. It involves crossing varieties over many generations to ultimately yield a plant with high nutrient content along with other favourable traits. This is the only method used in India for producing biofortified crops.
• Genetic engineering/modification: This involves inserting DNA into the genome of an organism to introduce new or different characteristics such as being resistant to any disease.

Examples of Biofortification

The following are some common examples of biofortification of food crops:

• Iron biofortification – Rice, sweet potato, beans, legumes, cassava
• Zinc biofortification – Rice, wheat, sweet potato, maize, beans
• Provitamin A carotinoid biofortification – Cassava, maize, sweet potato
• Amino acid and protein biofortification – Cassava, sorghum

Benefits of Biofortification

• Biofortification helps in achieving overall health improvement in the people.
• Such crops are more resilient to diseases, pests, droughts, etc. and provide better yields.
• It offers a food-based, sustainable and low-dose alternative to iron supplements.
• It has the potential to reach the poorest section of society (who cannot afford food supplements) and will also benefit farmers.
• It is highly cost-effective since once the initial research is done, the process can be easily replicated and scaled.
• Biofortification done through non-genetically modified methods (like traditional plant breeding done in India) is a better alternative then introducing GM crops that face implementation barriers.
• In a country such as India, that faces huge nutritional challenges, biofortification is a sustainable, cost-effective method that can help resolve this challenge.
  • Various studies and reports show that India faces a huge challenge in the form of undernutrition.
  • Anaemia and iron deficiency are problems pervading society especially the economically weaker sections and women.

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By Team Learning Mantras