[1]Key Laboratory of Tibetan Medicine Research/Northwest Institute of Plateau Biology;
Chinese Academy of Sciences;
Xining 810008;
China;
[2]Guangzhou Haoli Technology Co.;
Ltd.;
Guangzhou 510220;
China;
[2]Guangzhou Haoli Technology Co.;
Ltd.;
Guangzhou 510220;
China;
Lycium ruthenicum Murr.; Procyanidins; Sub-critical fluid extraction technology; R134a; Vanillin-HCl method; Different producing areas; Content determination;