Adding micronutrients to rice

Source: By Harikishan Sharma: The Indian Express

In his Independence Day speech, Prime Minister Narendra Modi announced the fortification of rice distributed under various government schemes, including the public distribution system (PDS) and midday meals in schools, by 2024.

The Food Safety and Standards Authority of India (FSSAI) defines fortification as “deliberately increasing the content of essential micronutrients in a food so as to improve the nutritional quality of food and to provide public health benefit with minimal risk to health”.

In other words, rice fortification is a process of adding micronutrients to regular rice. The micronutrients are added keeping in mind dietary requirements.

Various technologies are available for rice fortification, such as coating and dusting. For rice fortification in India, ‘extrusion’ is considered to be the best technology. This involves the production of fortified rice kernels (FRKs) from a mixture using an extruder machine. The fortified rice kernels are then blended with regular rice to produce fortified rice.

In extrusion technology, dry rice flour is mixed with a premix of micronutrients, and water is added to this mixture. This mixture then goes into a twin-screw extruder with heating zones, which produces kernels similar in shape and size to rice. These kernels are dried, cooled and packaged for use. FRK has a shelf life of at least 12 months.

As per guidelines issued by the Ministry of Consumer Affairs, Food and Public Distribution, the shape and size of the fortified rice kernel should “resemble the normal milled rice as closely as possible”. According to the guidelines, the length and breadth of the grain should be 5 mm and 2.2 mm respectively.

India has very high levels of malnutrition among women and children. According to the Food Ministry, every second woman in the country is anaemic and every third child is stunted. India ranks 94 out of 107 countries on the Global Hunger Index (GHI), which puts it in the ‘serious hunger’ category.

Fortification of food is considered to be one of the most suitable methods to combat malnutrition. Rice is one of India’s staple foods, consumed by about two-thirds of the population. Per capita rice consumption in India is 6.8 kg per month. Therefore, fortifying rice with micronutrients is an option to supplement the diet of the poor.

Under the Ministry’s guidelines, 10 g of FRK must be blended with 1 kg of regular rice.

According to FSSAI norms, 1 kg of fortified rice will contain the following: iron (28 mg-42.5 mg), folic acid (75-125 microgram), and vitamin B-12 (0.75-1.25 microgram). Rice may also be fortified with zinc (10 mg-15 mg), vitamin A (500-750 microgram RE), vitamin B-1 (1 mg-1.5 mg), vitamin B-2 (1.25 mg-1.75 mg), vitamin B-3 (12.5 mg-20 mg) and vitamin B-6 (1.5 mg-2.5 mg) per kg.

The cooking of fortified rice does not require any special procedure. The rice needs to be cleaned and washed in the normal way before cooking. After cooking, fortified rice retains the same physical properties and micronutrient levels as it had before cooking.

According to the Ministry, nearly 2,690 rice mills have installed blending units for production of fortified rice, and the current blending capacity stands at 13.67 lakh tonnes in 14 key states. FRK production has gone up from 7,250 tonnes to 60,000 tonnes within 2 years.

Existing rice mills need to be upgraded to fortification facilities. The cost of the upgrade varies from mill to mill depending on the volume of fortified rice produced. According to the Ministry, an investment of around Rs15-20 lakh would be required to upgrade a rice mill of operating capacity 4-5 tonnes/hour.

The Ministry estimates that the cost of producing FRK with three micronutrientsiron, folic acid, and vitamin B-12 — will come to around Rs 0.60 per kg. This cost will be shared by the Centre and the states. The government will pay this cost to rice millers.

Fortified rice will be packed in jute bags with the logo (‘+F’) and the line “Fortified with Iron, Folic Acid, and Vitamin B12” mandatorily printed on the pack.

In 2019-20, the Ministry launched a centrally sponsored pilot scheme, ‘Fortification of Rice and its Distribution under PDS’, for three years with a total budget outlay of Rs 174.64 crore. The pilot scheme focuses on 15 districts in 15 statesAndhra Pradesh, Kerala, Karnataka, Maharashtra, Odisha, Gujarat, Uttar Pradesh, Assam, Tamil Nadu, Telangana, Punjab, Chhattisgarh, Jharkhand, Uttarakhand, and Madhya Pradesh.

According to the Ministry, six states, including Maharashtra and Gujarat, have started distributing fortified rice as part of the pilot scheme, with approximately 2.03 lakh tonnes distributed until June 2021. Four more states are expected to start by September.

According to the Ministry, seven countries have mandated rice fortification — the United States, Panama, Costa Rica, Nicaragua, Papua New Guinea, Philippines, and the Solomon Islands.