Bengaluru Scientists Turn Coffee-Stain Effect Into Powerful Food Safety Tool0

• A to Z, Food Hygiene, Food Safety, Health & Wellness, News
• October 31, 2025

Key Update Indian researchers achieved a breakthrough in food safety by using the coffee-stain effect to detect toxic dyes and contaminants at trillionth levels. The Raman Research Institute (RRI), Bengaluru, supported by the Department of Science and Technology (DST), turned this simple phenomenon into a low-cost, highly sensitive method for testing food and water safety,