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9th November 2024 (10 Topics)

Lead Contamination in Turmeric

Context

A new study has found dangerously high levels of lead in turmeric (much higher than the permissible limits) sold in India, Nepal, and Pakistan.

Key Findings of the Study:

  • Lead levels in some turmeric samples exceeded 1,000 micrograms per gram (?g/g).
  • Permissible Limit:
    • The permissible limit set by India’s Food Safety and Standards Authority (FSSAI) is 10 ?g/g.
    • The World Health Organization (WHO) maintains that no amount of lead is safe for human consumption.
  • Health Risks:
    • Lead is a naturally occurring toxic metal found in the Earth’s crust. It is a toxic heavy metal that disrupts metabolic functions, particularly affecting brain development, intelligence, and overall health.
    • Lead exposure can result in lead poisoning, which can cause intelligence loss, learning difficulties, and behavioral issues, especially in children.
    • Studies show that children with blood lead levels as low as 5 ?g/dL can face cognitive and behavioral issues.
    • Lead chromate, a yellow pigment used in paints, rubber, and plastics, is suspected to be the main source of lead contamination in turmeric. It is often used to enhance the color of turmeric and make lower-quality roots look more appealing.

Fact Box:  Turmeric

  • Turmeric, also known as Indian saffron, is a perennial herb, native of South Asia.
  • It is used as a condiment, dye and part of religious ceremonies. It is a major part of Ayurveda, Siddha medicine, traditional Chinese medicine, Unani and the animistic rituals of Austronesia peoples. 
  • India is world largest producer, consumer and exporter of turmeric.
  • More than 30 varieties of Turmeric are grown in India and it is grown in over 20 states in the country.
  • Largest producing states of Turmeric: Maharashtra, Telangana, Karnataka and Tamil Nadu.
  • Crop Season:  Kharif season  
  • Crop type: Spice crop  
  • Climate: Turmeric cultivation can be done in diverse tropical regions with warm and humid climates. Ideally, it requires an annual rainfall between 1500 mm. It can be grown within a temperature range of 20 to 35°C. Slow emergence of the pseudostem and leaves may occur when the temperature is high, and humidity is low.   
  • Soil: It exhibits optimal growth in well-drained soils, particularly red or clay loam soils.
  • The National Turmeric Board focuses on the development and growth of turmeric and turmeric products in the country.

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