II THUYET MINH DE TAI A LY DO NGHIEN CUU S\f dn thi�t ciia d� tai: Thgc V?t la ngu6n cung dip luong thi,rc, thgc phfim va duqc phfim cho nguoi Duqc tinh cua thgc V?t la nhfrng hqp chdt thu dip, thuong t6n t?i rdt it ca thS thgc V?t Tuy nhien c6 sg tac d()ng ill m()t di€u ki�n thich hqp, nguai ta se c6 thS lam tang ham luqng cac hqp chdt thu cdp len Akaloid la cac hqp chdt th(r dip ph6 biSn nhdt thgc V?t, la ngu6n duqc li�u d6i dao duqc y h9c sir dt,mg nhi€u nhdt Dira C?n vira duqc tr6ng lam cay canh, vira la m9t lo?i duqc li�u quy dung dS chfra b�nh Dira c?n Catharanthus roseus L thu9c hQ True Dao, c6 xudt xu tir dao Madargascar, Chau Phi Dira C?n duqc tr6ng nhi€u nai tren thS gi&i nhung chu ySu phat triSn m?nh nhfrng vimg nhi�t d&i nhu nu&c ta Trong