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《LED﹢光质对紫背天葵挥发油和酚类成分积累的影响》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、第20卷第4期载人航天Vol.20No.42014年7月MannedSpaceflightJul.2014LED光质对紫背天葵挥发油和酚类成分积累的影响12,12任锦,郭双生,沈韫赜(1.西北工业大学生命学院,陕西西安710072;2.中国航天员科研训练中心,人因工程重点实验室,北京100094)摘要:为了探索促进紫背天葵在受控环境中更好地积累生物活性成分的有效光质条件,采用3种LED光源(R60B30G10/60%红光+30%蓝光+10%绿光,R70B20G10/70%红光+20%蓝光+10%绿光,R60B
2、20G20/60%红光+20%蓝光+20%绿光)研究了光质条件对紫背天葵次级代谢物(挥发油和酚类)的影响。结果表明:与R70B20G10光质相比,R60B20G20光质显著增加了萜烯类物质(α,β-石竹烯)的积累,降低了醛类成分(绿叶挥发物)在香气物质中的比例,而R60B30G10与此结果相反;与其它光质相比,R60B30G10光质增加了总花色苷和总黄酮的含量,而在R70B20G10和R60B2OG20光质条件下这些物质的含量没有显著差异;与其它光质相比,R70B20G10光质增加了β-胡萝卜素积累和植物叶片
3、提取物的抗氧化活性(DPPH),而R60B20G20光质则显著降低了β-胡萝卜素的含量。因此,R70B20G10为适合于紫背天葵积累更多有用次级代谢产物及提高其营养和药用价值的光质条件。关键词:LED光质;紫背天葵;萜烯类;酚类中图分类号:V524.2文献标识码:A文章编号:1674-5825(2014)04-0386-07EffectsofLEDLightQualityontheAccumulationofEssentialOilsandPhenolsinGynuraBicolorDC12,12RENJin
4、,GUOShuangsheng,SHENYunze(1.FacultyofLifeSciences,NorthwesternPolytechnicalUniversity,ShaanxiXi’an710072,China;2.NationalKeyLaboratoryofHumanFactorsEngineering,ChinaAstronautResearchandTrainingCenter,Beijing100094,China)Abstract:Toexploretheefficientillumin
5、antforGynurabicolorDCtoproducemorebioactivecom-poundsundercontrolledenvironments,threeLEDilluminantsofR60B30G10(60%Redlights+30%Bluelights+10%Greenlights),R70B20G10/(70%Redlights+20%Bluelights+10%Greenlights)andR60B20G20(60%Redlights+20%Bluelights+20%Greenl
6、ights)wereappliedtoinvestigatetheeffectsoflightqualityontheaccumulationofsecondarymetabolites(es-sentialoilsandphenols).ResultsshowedthatR60B20G20lighttreatmentsignificantlyincreasedtheaccumulationofterpenes(α,β-caryophyllene)andreducedtheproportionofaldehy
7、des(greenleafvolatiles)intotalvolatiles,butsuchtrendconversedinR60B30G10lightgroup.ThecontentsoftotalanthocyaninsandflavonoidswerepromotedinR60B30G10lighttreatmentascomparedwithotherlightgroups,andtherewerenodifferencebetweenR70B20G10andR60B2OG20lightcondi-
8、tions.Incomparisontootherlightconditions,R70B20G10lightgroupenhancedtheaccumulationofβ-caroteneandantioxidativecapacity(DPPHassay)ofleafextract,whereasR60B20G20lightgroupevidentlydecreasedtheaccumulati
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