Lovibond法和分光光度法对茶叶籽油色泽测定的比较研究  

Comparison of the Color Measurement of Tea Seed Oil by Lovibond and Spectrophotometry Methods

作　　者：吴靖[1] 李德宝[1] 黄惠华[1] 

机构地区：[1]华南理工大学轻工与食品学院,广东广州510640

出　　处：《现代食品科技》2009年第1期114-116,110,共4页Modern Food Science and Technology

摘　　要：研究了Lovibond法和分光光度法对茶叶籽油色泽测定的差异,并探讨了两种方法的优缺点。得到如下结论:茶叶籽油色泽的常规检测可用Lovibond法;若要准确检测可用一般的分光光度法在669nm的波长下检测;另脱色剂等会对茶叶籽油中的的红色最大吸收波长产生影响,其一般在640～690nm的波长范围内偏移,故精确检测茶叶籽油中的色素含量可通过测定640～690nm波长扫描图下与X轴所围的吸光度面积来测定。The Lovibond color indicator method and spectrophotometer method on measuring the color of tea seed oil were compared. The result showed that Lovibond method could be used as general method for the color measurement of tea seed oil. The spectrophotometry method at 669nm was more accurate than the Lovibond method. The max absorbance wavelength was affected by the absorbent and migrated to 640nm -690nm .So the pigment content of tea seed oil could be measured by determination of the scanning area at 640nm-690nm.

关 键 词：Lovibond测色法 分光光度法 茶叶籽油 

分 类 号：TS225.16[轻工技术与工程—粮食、油脂及植物蛋白工程]