A. Safari, D. S. Kamara, F. Silalahi, M. Fadhlillah, I. Kardi, and S. Ishmayana, “PARTIAL HYDROLYSIS OF PURPLE SWEET POTATO FLOUR BY AMYLASE FROM Saccharomycopsis fibuligera AND ITS APPLICATION FOR COMPOSITE BREADMAKING”, J microb biotech food sci, vol. 2, no. 5, pp. 2340–2343, Apr. 2013.