| This paper, based on fruits of Lycium ruthenicum Murr. of Xinjiang, aims to exploit the utility of this plant as a possible extractive material for the pigment products.By integrating the theories and methods of botany, plant chemistry, food hygiene and toxicology, the extracting technology of pigment from Lycium ruthenicum Murr. is studied by single factor and orthogonal design experiments guided by the pigment contents in the extraction. Results show the successive order of factors affecting extraction is pH(HCl) > solid-liquid ratio >extraction temperature>extraction time. The best extraction condition is 1︰45, pH1.5 HCl, 30℃, 0.5 hours. The pigment produced by this method is purple power.The absorption and disorption of the pigment Lycium ruthenicum Murr. with 001×7 sia are studied.The results show that eluting with 1mol/L HCl from 001×7 ,the pigment can be got 68.86%.According to the nation standards, the safety assessment of this pigment is studied. Its some items of toxicity are examined.The result shows that this pigment is safe, and the harmful element is also examined. We found that all results are correspondent with the nation standards, so this pigment is a safe element and can be used in production and life. |
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