鱼油结构对深度氧化的阻滞性研究  

Relationship between fish oil structure and blocking of deep oxidation

作　　者：苏辉[1] 唐渊 梁永贤 姚庆达 周华龙 SU Hui;TANG-Yuan;LIANG Yongxian;YAO Qingda;ZHOU Hualong(Guangdong Huizhou Quality & Measur.ing Supervision Testing Institute,Huizhou 516003, China;Fujian Key Laboratory of Green Design and Manufacture of Leather,Xingye Leather Technology Co.,Ltd.,Jinjiang 362261,China;The Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University,Chengdu 610065,China)

机构地区：[1]广东省惠州市质量计量监督检测所,广东惠州516003 [2]福建省皮革绿色设计与制造重点实验室兴业皮革科技股份有限公司,福建晋江362261 [3]四川大学皮革化学与工程教育部重点实验室,四川成都610065

出　　处：《中国皮革》2019年第1期18-25,共8页China Leather

基　　金：四川省科技厅应用基础计划项目;编号:2011JY0023

摘　　要：考察了鱼油与普通不饱和植物油在氧化过程中的差别:鱼油具有高碘值,却只有较低过氧化值(PV)。随着氧化过程的延续,对提高鱼油过氧化值PV没有作用,反而使表观物性黏度增加;经反复试验,用紫外光谱仪、激光拉曼光谱仪进行表征。揭示了鱼油的多双键结构,不同于不饱和植物油,并随着氧化时间的延长,其异构化、(累积)共轭化程度越明显,缩聚反应程度也越深,黏度剧增。证明鱼油不仅具有通常的不饱和油脂的双键,还有孤立双键的存在;累积共轭双键形成,结果极大地消耗了游离基,减少了过氧基—OOH的生成与传递,阻滞了深度氧化的正常持续。The differences between fish oil and ordinary unsaturated vegetable oil in the oxidation process were systematically investigated.Fish oii has a high iodine value but a low.peroxide value (pv).As the oxidation process continues,it has no effect on the increasing of peroxide value (PV)of fish oil,while the viscosity increases.The fish oil was characterized by ultraviolet absorption instrument and laser Raman spectrome(er with repeated experiments. The results reveal the double bond structure of fish oil,which.is different from unsaturated vegetable oil.With the increasing of oxidation time,the degree of isomerization and (cumulative)conjugation are more obvious,the degree of polycondensation reaction is deeper and the viscosity is sharply increased.It is,proved that fish oil not only has the double bond of unsaturated oil,but also makes the double bond isolate.The formation of accumulated conjugated double bonds greatly consumes free radicals,reduces the formation and transfer of peroxy --OOH ana blocks the normal continuation of deep oxidation.

关 键 词：鱼油 氧化 共轭反应 环化反应 交联反应 仪器表征 

分 类 号：TQ64[化学工程—精细化工]