Devnani had made the claim on Saturday while speaking at a programme organised by Akshya Patra foundation at Hingonia cow rehabilitation centre.
"I read this fact on research websites and it recently appeared in a magazine of Akshya Patra, saying that cow inhales and exhales oxygen and included this in my speech on Saturday," the education minister today said.
To underscore the "scientific significance" of the "holy animal", he reiterated today this reference can be found in "research studies".
"The Gaumutra's benefits and its medicinal values are well known and people use and take its benefits. The burning of cow dung makes the environment free of harmful micro-organisms and mosquitoes, making the place suitable for living," he said.
"Scientific journals and research papers are the base of my statements," he said.
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