[1]Huaiyin Institute of Technology;
Huaian 223003;
China;
[1]Huaiyin Institute of Technology;
Huaian 223003;
China;
[1]Huaiyin Institute of Technology;
Huaian 223003;
China;
[1]Huaiyin Institute of Technology;
Huaian 223003;
China;
[1]Huaiyin Institute of Technology;
Huaian 223003;
China;
[1]Huaiyin Institute of Technology;
Huaian 223003;
China;
[1]Huaiyin Institute of Technology;
Huaian 223003;
China;
Pinus thunbergii; Needles; Polyphenols; Response surface methodology;