板栗壳棕色素的吸附树脂法精制

The Refining of the Brown Pigment Extracted from Chestnut Shells by Polymer Adsorbent

采用大孔吸附树脂分别对以水和乙醇为溶剂制得的板栗壳棕色素Ⅰ和Ⅱ进行精制，确定了色素Ⅰ以D4020，色素Ⅱ以NKA-9为吸附剂，并对精制效果作了评价。本文为吸附树脂在色素中的应用提供了一定的科学依据。

Polymer adsorbents were used to refine the brown pigment Ⅰand Ⅱwhich were ex-tracted from chestnut shells by water and ethanol respectively. It was determined that D4020 act-ed as the adsorbent for pigment Ⅰwhile NKA-9 acted as the adsorbent for pigment Ⅱ. The effectof purification was evaluated. The paper offered a scientific basis for the application of polymer ad-sorbent in pigment refining.