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Research on Extraction and Properties of the Pigment of Ulmus pumila Leaves(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2014年16期
Page:
133-136
Research Field:
Publishing date:

Info

Title:
Research on Extraction and Properties of the Pigment of Ulmus pumila Leaves
Author(s):
SHI Bao-sheng1; REN Zi-bei1; YANG Lu1; HAO Xiao-fei2; HUANG Yin-ran3
1.College of Landscape and Tourism,Hebei Agricultural University,Baoding,Hebei 071000;
2.The Mulan Forestry Management Bureau of Hebei,Weichang,Hebei 068450;
3.Forestry Research Institute of Hebei,Shijiazhuang,Hebei 050051
Keywords:
. Ulmus pumila; leaf; pigment; extraction; property
PACS:
S792.19
DOI:
-
Abstract:
Taking Ulmus pumila leaf as material,the physiochemical properties and the suitable reagent of the pigment from Ulmus pumila leaf was investigated in this study.The extraction solvent kind and the change in maximum absorption wavelength of this pigment under different conditions were determined through a spectrophotometer.The results showed that the suitable reagent for the extraction was ethanol.The pigments dissolved in ethanol exhibited a maximum absorption at 440 nm wavelength.The color generation manifest that the yellow pigment contained carotenoids and flavonoids.The pigments had poor light stability.The absorbance only maintained 11.5% after 2 hours reaction and consequently should be stored in the dark condition.After 2 hours exposure to a temperature below 80℃,a low degradation ratio was observed in the pigments.The pigments were stable in acidic and alkalescent media.There were negative influences of light,oxidants,deoxidants and Al3+on the yellow pigment.These investigations demonstrated that the pigment had the exploitation and utilization values.These results had provided a new theoretical basis for the full utilization of Ulmus pumila resources,increasing its economic value and the exploration of natural food colorants

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Last Update: 2014-09-26