In order to develop and utilize the tropical medicinal resource Amomum(A.)longiligulare T.L.Wu more reasonably and effectively,this paper summarizes the research progress in chemical constituents and pharmacological a...In order to develop and utilize the tropical medicinal resource Amomum(A.)longiligulare T.L.Wu more reasonably and effectively,this paper summarizes the research progress in chemical constituents and pharmacological activities of A.longiligulare by consulting the literatures,so as to provide a certain theoretical basis for exploring its material basis.The chemical constituents of A.longiligulare mainly include volatile oil,diphenylheptane and flavonoids,which have good efficacy in anti-peptic ulcer,as well as antioxidant,analgesic and other pharmacological activities.This paper briefly discusses the reasons for the differences in the composition of volatile oil studied by different scholars.By summarizing its pharmacological activities,it is found that its various pharmacological activities may be the basis of its anti-peptic ulcer.展开更多
Objective:To study the antioxidant activities of five extracts ofAmomi longiligulare (A. longiligulare) to determine the antioxidant fraction.Methods: The ethanol extract ofA. longiligulare was extracted by systematic...Objective:To study the antioxidant activities of five extracts ofAmomi longiligulare (A. longiligulare) to determine the antioxidant fraction.Methods: The ethanol extract ofA. longiligulare was extracted by systematic solvent extraction to obtain the petroleum ether, dichloromethane, ethyl acetate, n-butanol fractions successively. Thein vitro antioxidant activities of the five extracts were evaluated by 2, 2-diphenyl-1-picrylhydrazyl (DPPH) radical and hydroxyl radical (OH-) scavenging assay methods.Results: The five extracts showed different extent of antioxidant activities in vitro, especially the ethyl acetate and dichloromethane fractions.Conclusion: The difference of antioxidant activity of different extracts may be associated with the type and structure of antioxidant components in each fraction of A. longiligulare fruits.展开更多
Objective:To optimize the technological conditions of ultrasonic-assisted extraction of Amomum longiligulare T.L.Wu polysaccharides and increase the yield of polysaccharides.Methods:The polysaccharide was prepared by ...Objective:To optimize the technological conditions of ultrasonic-assisted extraction of Amomum longiligulare T.L.Wu polysaccharides and increase the yield of polysaccharides.Methods:The polysaccharide was prepared by water extraction and alcohol precipitation method,and the yield of polysaccharide was taken as an index.The effects of ultrasonic time,extraction times,ultrasonic temperature,and water-to-material ratio on polysaccharide yield were investigated through a single factor experiment.Combined experimental design and response surface analysis were used to optimize the extraction process of Amomum longiligulare T.L.Wu polysaccharides.Results:The optimum conditions of ultrasonic-assisted extraction were determined as follows:extraction time of 29 min,three extraction times,water bath extraction temperature of 68℃,water-to-material ratio of 15:1;under these conditions,the polysaccharide yield was 10.69%.Conclusion:The results are close to the predicted values of the model.This optimization test is effective and feasible,and provides a reference for the related research of Amomum longiligulare T.L.Wu.展开更多
基金supported by the National Natural Science Foundation of China(81660649),and Innovative Scientific Research Project for Postgraduates of Hainan Medical University(HYYS2020-05)。
文摘In order to develop and utilize the tropical medicinal resource Amomum(A.)longiligulare T.L.Wu more reasonably and effectively,this paper summarizes the research progress in chemical constituents and pharmacological activities of A.longiligulare by consulting the literatures,so as to provide a certain theoretical basis for exploring its material basis.The chemical constituents of A.longiligulare mainly include volatile oil,diphenylheptane and flavonoids,which have good efficacy in anti-peptic ulcer,as well as antioxidant,analgesic and other pharmacological activities.This paper briefly discusses the reasons for the differences in the composition of volatile oil studied by different scholars.By summarizing its pharmacological activities,it is found that its various pharmacological activities may be the basis of its anti-peptic ulcer.
基金Project of Hainan Provincial Natural Science Foundation(20158370).
文摘Objective:To study the antioxidant activities of five extracts ofAmomi longiligulare (A. longiligulare) to determine the antioxidant fraction.Methods: The ethanol extract ofA. longiligulare was extracted by systematic solvent extraction to obtain the petroleum ether, dichloromethane, ethyl acetate, n-butanol fractions successively. Thein vitro antioxidant activities of the five extracts were evaluated by 2, 2-diphenyl-1-picrylhydrazyl (DPPH) radical and hydroxyl radical (OH-) scavenging assay methods.Results: The five extracts showed different extent of antioxidant activities in vitro, especially the ethyl acetate and dichloromethane fractions.Conclusion: The difference of antioxidant activity of different extracts may be associated with the type and structure of antioxidant components in each fraction of A. longiligulare fruits.
基金National Natural Science Foundation of China(No.81660649)Hainan Medical College Student Innovation and Entrepreneurship Training Program Project(No.201811810007)。
文摘Objective:To optimize the technological conditions of ultrasonic-assisted extraction of Amomum longiligulare T.L.Wu polysaccharides and increase the yield of polysaccharides.Methods:The polysaccharide was prepared by water extraction and alcohol precipitation method,and the yield of polysaccharide was taken as an index.The effects of ultrasonic time,extraction times,ultrasonic temperature,and water-to-material ratio on polysaccharide yield were investigated through a single factor experiment.Combined experimental design and response surface analysis were used to optimize the extraction process of Amomum longiligulare T.L.Wu polysaccharides.Results:The optimum conditions of ultrasonic-assisted extraction were determined as follows:extraction time of 29 min,three extraction times,water bath extraction temperature of 68℃,water-to-material ratio of 15:1;under these conditions,the polysaccharide yield was 10.69%.Conclusion:The results are close to the predicted values of the model.This optimization test is effective and feasible,and provides a reference for the related research of Amomum longiligulare T.L.Wu.
