Peel filter

GRAPEFRUIT or chakotra is widely used in bodywashes and gels. But its peel finds limited use. Now, Indian researchers have shown the peel can be effectively used to filter methylene blue, a dye which is used to colour silk and cotton and is the main ingredient of the textile industry effluent. If ingested, water contaminated with the chemical can cause nausea, vomiting and diarrhoea.