in its press release announcing the temporally suspension of econa line of products, kao cites questions raised by european researchers on the uncertain health effect of fatty acid glycidyl esters. it states that fatty acid glycidyl esters contained in the products are introduced as by-product of deodorization process, but maintains that the main ingredient dag (diacylglycerol) is proven safe, and says it plans to resume sale after reducing the amount of fatty acid glycidyl esters introduced in its production method.