Authentication of butter from lard adulteration using high-resolution of nuclear magnetic resonance spectroscopy and high-performance liquid chromatography by Fadzillah, N. A., Rohman, A., Salleh, R. A., Amin, I., Shuhaimi, M., Farahwahida, M. Y., Rashidi, O., Aizat, J. M., Khatib, A.