Phytochemical screening, antioxidant activity, total polyphenols and flavonoids content of different extracts of propolis from Tekel (Ngaoundal, Adamawa region, Cameroon) Journal title: The Journal of Phytopharmacology Authors: Emmanuel Talla, Alfred Ngenge Tamfu, Pierre Biyanzi, Paul Sakava, Forche Peter Asobo, Joseph Tanyi M... Subject(s): Biological Sciences, Agricultural Science, Biomedicine, Pharmacy, Pharmacognosy