Hydrilla verticillata （Linn. f.） Royle is a submerged plant for phytoremediation on Taihu Lake, China. The planted submerged plant should be harvested in every autumn to reduce the nutrition burden of the lake. Five...Hydrilla verticillata （Linn. f.） Royle is a submerged plant for phytoremediation on Taihu Lake, China. The planted submerged plant should be harvested in every autumn to reduce the nutrition burden of the lake. Five compounds were firstly isolated by column chromatography and purified from the extractions of Hydrilla verticillata （Linn. f.） Royle. 1-（5＇-Hydroxy-4＇-hydroxymethyl-1＇-methyl-1H-pyrrol-2＇-yl）-henicosa-2,12,15-trien-1-one （2） and thymidine （3） were identified by EIMS, 1H NMR, laC NMR and IR spectra. Crystal loliolide （1） and sulfur-gamma （4） were identified by X-ray diffraction. Octadecanedioic acid （5） was also elucidated. Among them, compound 2 is a new natural compound, loliolide （1） and thymidine （3） are known bioactive substances. The results provided basic research data for exploring their application as medical materials.展开更多
Fatty, phenolic and hydroxy acids in aqueous leachates of three submerged macrophytes 〔Ceratophyllum demersum L., Vallisneria spiralis L., Hydrilla verticillata (L. f.) Royle〕 were analyzed using GC-MS in shallow fr...Fatty, phenolic and hydroxy acids in aqueous leachates of three submerged macrophytes 〔Ceratophyllum demersum L., Vallisneria spiralis L., Hydrilla verticillata (L. f.) Royle〕 were analyzed using GC-MS in shallow freshwater. Succinic acid, oxalic acid, cis-aconitic acid, lactic acid and ferulic acid were main components. The content of cis-aconitic acid was more than 18% in H. verticillata but less than 2% in C. demersum and V. spiralis. The content of phenolic acid accounted for 8.85% in C. demersum but 1.23% and 0.63% in V. spiralis and H. verticillata.展开更多
文摘Hydrilla verticillata （Linn. f.） Royle is a submerged plant for phytoremediation on Taihu Lake, China. The planted submerged plant should be harvested in every autumn to reduce the nutrition burden of the lake. Five compounds were firstly isolated by column chromatography and purified from the extractions of Hydrilla verticillata （Linn. f.） Royle. 1-（5＇-Hydroxy-4＇-hydroxymethyl-1＇-methyl-1H-pyrrol-2＇-yl）-henicosa-2,12,15-trien-1-one （2） and thymidine （3） were identified by EIMS, 1H NMR, laC NMR and IR spectra. Crystal loliolide （1） and sulfur-gamma （4） were identified by X-ray diffraction. Octadecanedioic acid （5） was also elucidated. Among them, compound 2 is a new natural compound, loliolide （1） and thymidine （3） are known bioactive substances. The results provided basic research data for exploring their application as medical materials.
文摘Fatty, phenolic and hydroxy acids in aqueous leachates of three submerged macrophytes 〔Ceratophyllum demersum L., Vallisneria spiralis L., Hydrilla verticillata (L. f.) Royle〕 were analyzed using GC-MS in shallow freshwater. Succinic acid, oxalic acid, cis-aconitic acid, lactic acid and ferulic acid were main components. The content of cis-aconitic acid was more than 18% in H. verticillata but less than 2% in C. demersum and V. spiralis. The content of phenolic acid accounted for 8.85% in C. demersum but 1.23% and 0.63% in V. spiralis and H. verticillata.
