Non-alkaloid constituents of Gelsemium elegans Analysis of non-alkaloids from Radix Sophorae Tonkinensis by GC-MS Environment analysis of naturally ventilated sheep house in winter in Inner Mongolia Insecticidal activities of the non-allkaloid extracts from Tripterygium wilfordii against Plutella xylostella Advances in studies on non-alkaloid constituents of Fritillaria L. plants Chemical constituents of non-alkaloids from Huperzia serrata