摘要
以赤砂糖回溶糖浆为研究对象,探讨纳米氧化锌强化石灰澄清法联用二氧化氯氧化脱色工艺的可行性。以脱色率和除浊率为指标,考察了纳米氧化锌用量、二氧化氯用量、氧化反应初始p H、氧化反应时间、氧化反应温度五个因素对赤砂糖回溶糖浆脱色率和除浊率的影响。并通过正交试验优化工艺条件,其中,脱色最佳工艺为:纳米氧化锌用量125 mg/kg、二氧化氯用量900 mg/kg、氧化反应初始p H 6.60、氧化反应时间15 min、氧化反应温度为40℃,在此条件下,脱色率可达40.0%;除浊最佳工艺为:纳米氧化锌用量75 mg/kg、二氧化氯用量800 mg/kg、氧化反应初始p H 6.40、氧化反应时间60 min、氧化反应温度为50℃,在此条件下,除浊率可达89.5%。结果表明,赤砂糖回溶糖浆石灰澄清法联用二氧化氯氧化脱色工艺具有可行性。
Taking remel syrup of brown granulated sugar as the object, the feasibility of the process of clarification by nanometer ZnO enhanced liming in combination with oxidation decolorization by ClO2 was explored. With decolorization rate and deturbidity rate as the index, variables effects such as nanometer ZnO dosage, ClO2 dosage, oxidation initial pH, oxidation reaction time and oxidation reaction temperature for the clarification and decolorization for the remelt syrup of brown granulated sugar were evaluated. The orthogonal test had been proceed to optimize the experimental conditions, the results showed that the optimal process conditions for the decolorization rate were as following： nanometer ZnO dosage 125 mg/kg, ClO2 dosage 900 mg/kg, oxidation initial pH 6.60, oxidation reaction time 15 min, oxidation reaction temperature 40℃. Under these optimal conditions, the decolorization rate was 40.0%. The optimal process conditions for the deturbidity rate were as followings： nanometer ZnO dosage 75 mg/kg, ClO2 dosage 800 mg/kg, oxidation initial pH 6.40, oxidation reaction time 60 min, oxidation reaction temperature 50℃. Under these optimal conditions, the deturbidity rate was 89.5%. The results of the experiment verified the feasibility of the process of clarification by liming in combination with oxidation decolorization by ClO2 for remelting syrup of brown granulated sugar.
出处
《食品工业》
CAS
北大核心
2015年第8期3-8,共6页
The Food Industry
关键词
赤砂糖
澄清
脱色
纳米氧化锌
二氧化氯
brown granulated sugar
clarification
decolorization
nanometer ZnO
ClO2
