Physicochemical homogeneity of stingless bee honey (Heterotrigona itama) produced in the west coast, east coast and inland area of Peninsular Malaysia by Ramlan, Nurul Ainaa Farhanah Mat, Mohamad Azman, Ezzat, Muhammad, Kharidah, Jusoh, Arif Zaidi, Johari, Nor Azfa, Yusof, Yus Aniza, Zawawi, Norhasnida