鸡爪中过氧化氢残留量的影响因素研究和检测方法比较

Influencing factors of hydrogen peroxide residues in chicken feet and comparison of detection methods

中文关键词:  过氧化氢  鸡爪  残留  防腐  漂白

英文关键词:hydrogen peroxide  chicken feet  residue  antiseptic  bleaching

中文摘要:

      目的 模拟凤爪生产过程, 研究不同因素对鸡爪中过氧化氢残留量的影响和不同检测方法结果的比较。方法 本文用过氧化氢溶液浸泡鸡爪, 控制浸泡液浓度和浸泡时间, 采用GB 5009.226-2016中钛盐比色法和碘量法测定鸡爪中过氧化氢的残留量。同时进行加标回收和实际样品检测实验。结果 当浸泡液浓度达到1.0×103 mg/kg及以上时, 只需浸泡20 min即在鸡爪中检出较高过氧化氢残留量。鸡爪中过氧化氢残留量随浸泡液浓度和浸泡时间的增加而增加。碘量法和钛盐比色法的检测结果相一致。回收率为86.0%~91.2%, 相对标准偏差均小于3.41%(n=6)。结论 2种方法均能有效检测鸡爪中残留过氧化氢。

英文摘要:

      Objective To investigate the influencing factors of hydrogen peroxide residues in chicken feet and compare the detection methods by simulating the production process. Methods Chicken feet were soaked in hydrogen peroxide solution. The concentration and soaking time of the soaking liquid were controlled, and the residual amount of hydrogen peroxide in chicken feet was determined by GB 5009.226-2016 titanium sulfate spectrophotometric method and iodine quantitative method. At the same time, standard recovery test and actual sample test were carried out. Results It was found that when the solution concentration reached 1.0×103 mg/kg, hydrogen peroxide residue was detected in chicken feet only by soaking for 20 min. The amount of hydrogen peroxide residue in chicken feet increased with the increase of the concentration of soaking liquid and soaking time. The test results of two methods were consistent. The recoveries were ranged from 86.0% to 91.2%, and the relative standard deviations (RSDs) were less than 3.41% (n=6). Conclusion Both methods can effectively detect the residual hydrogen peroxide in chicken feet.