目的 优选W/O/W型复乳较佳的配方.方法 在前期预实验的基础上筛选出油水相比例、乳化剂Ⅰ的用量、辅助乳化剂的种类与用量、稳定剂的用量、稳定剂Ⅱ的用量、内外渗透压等8个影响复乳配方质量的因素,以复乳产率和离心分离时间为指标,选用L18(2×37)表进行正交试验.同时考察优选配方所制复乳的理化性质和稳定性.结果 8个因素对复乳质量的影响大小依次为:D＞G＞F＞B＞E＞H＞A＞C,其中辅助乳化剂和乳化剂Ⅱ的用量是主要的影响因素.结论 按照优选的配方可以制备出性状较好的复乳,且所得复乳理化性质和稳定性均良好.

Because most artificial synthesized dyes are aroma hydrocarbon ramifications with strong,chronic poisonous side effect of cancer-causing,the natural plant dyes display the safe advantage and more used as the food additive.The Gardenia yellow pigment exwacted from the Gardenia fruit is unique natural water-soluble carrot dye,including crocin,iridoid glycoside and triterpenoid,and it is popular in the Europe,USA and Japanese.The water extraction technology of Gardenia yellow pigment was studied through a single factor experiment.the optimal condition of water extraction technology was 60℃,8:1(V/W) of ethanol to Gardenia,time extraction,each for 60 min.the extracting efficiency of total crocin,total geniposide and total triterpenoid reached 1.09 mg·g-1,106.89 mg·g-1 and 72.13 mg·g-1 respectively.This optimized process is simple,stable and efficient.

Satisfactory colored-films on iron craftworks were obtained by coloring process of electroless Cu plating at room temperature and chemical coloring in turn. Process specifications were discussed. The affecting factors on electroless Cu plating were briefly introduced. The coloring process has advantages of simple equipment, easy operation and low cost.