NATURAL PRODUCT RESEARCH AND DEVELOPMENT ›› 2018, Vol. 30 ›› Issue (增刊2): 108-113.

• Article • Previous Articles     Next Articles

Effect of Ultramicro Pulverization on Structure and Antioxidant Activities of Dendrobium Nobile

WU Zhen1,LI Hong2*,CHEN Gang1,LUO Yang1,ZHAN Yong1*,YANG Yong1,3,TAN Hong-jun1,HUANG Xiao-ping1   

  1. 1Chongqing Academy of Chinese Materia Medica,Chongqing Key Laboratory of Chinese Medicine & Health Science,Chongqing 400065,China; 2Chongqing Institute for Food and Drug Control,Chongqing 401121,China; 3Chongqing Engineering Technology Research Center of Materia Medica Health,Chongqing 402460,China
  • Online:2019-01-18 Published:2019-01-18

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Abstract: In order to study the application value of Dendrobium nobile,we investigated the particle structure and antioxidant activities of ultramicro powder and common powder of Dendrobium nobile.It was found that the ultrastructure of Dendrobium nobile was changed by ultramicro pulverization,and the cell wall net-like structure and fiber components were destroyed.The particle size was small and its distribution was more concentrated.Furthermore,the reduce power,and scavenging abilities of DPPH·,OH· and O2–· were studied.The reduce power,and scavenging abilities of DPPH·,OH· and O2–· has been increased by 1.6,1.4,1.5,1.5 times,respectively,compared to those extracted solution (The concentration of extracted solution:60 mg/mL).Ultramicro pulverization has changed the physical-chemical properties of Dendrobium nobile,destroyed its original structure,improved its antioxidant capacities,and had a certain potential in the application of medicine and food industries.

Key words: Dendrobium nobile, submicron powder, common powder, structure, SEM, antioxidant activity

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