Kinetic model and optimization for enzyme‐assisted hydrodistillation of d‐limonene‐rich essential oil from orange peel,Flavour and Fragrance Journal

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Kinetic model and optimization for enzyme‐assisted hydrodistillation of d‐limonene‐rich essential oil from orange peel
Flavour and Fragrance Journal ( IF 2.1 ) Pub Date : 2020-07-01 , DOI: 10.1002/ffj.3598
Ammara Waheed ₁ , Sumia Akram ₂ , Rizwan Ashraf ₃ , Muhammad Mushtaq ₁ , Ahmad Adnan ₁

Affiliation

The present research has been planned to evaluate the effect of enzymatic maceration on the recovery of essential oil during hydrodistillation of orange (Citrus sinensis L.) peel. In the execution phase, the orange peel was hydrolysed under different conditions regarding enzyme concentration, liquid‐to‐solid ratio, temperature and incubation time, which established that hydrolysis of orange peel with 3.9% (mL/100 g) Viscozyme L^® at liquid/solid ratio of 4.0 (mL/g) and 55°C for 3.8 hours can produce essential oil fourfold higher as compared to untreated orange peel. The kinetic modelling of the data further established that the incorporation of enzymatic pretreatment can reduce the extraction time up to 4 hours without any loss of aroma compounds. The GC‐MS analysis of orange peel essential oil obtained under optimum conditions of enzyme‐assisted hydrodistillation (EAHD) revealed the presence of D‐limonene as a major constituent (66%) followed by β‐caryophyllene (23%) and isopropyl myristate (11%). Moreover, the orange peel essential oil expressed via EAHD showed a good tendency to neutralize free radicals and protect linoleic acid under ambient conditions. Henceforth, it might be brought forward that enzyme‐assisted hydrodistillation worked more efficiently and economically than the conventional counterpart.

中文翻译：

橙皮中富含d-柠檬烯的精油的酶辅助加氢蒸馏动力学模型及优化

本研究计划用于评估橙皮（Citrus sinensis L.）果皮加氢蒸馏过程中酶浸法对精油回收的影响。在执行阶段，桔皮是关于酶浓度不同的条件下水解，液体-固体比例，温度和温育时间，确立桔皮的水解与3.9％（毫升/ 100克）VISCOZYME大号^®在液/固比为4.0（mL / g）和55°C的条件下进行3.8小时可以生产的精油比未经处理的橙皮高四倍。数据的动力学模型进一步证实，酶促预处理的结合可将提取时间减少多达4小时，而不会损失任何香气化合物。在酶辅助加氢蒸馏（EAHD）的最佳条件下获得的橙皮精油的GC-MS分析表明存在D柠檬烯为主要成分（66％），其次是β-石竹烯（23％）和肉豆蔻酸异丙酯（11％）。此外，通过EAHD表达的橙皮精油在环境条件下具有中和自由基并保护亚油酸的良好趋势。因此，可以提出酶辅助加氢蒸馏比常规方法更有效，更经济地进行。

更新日期：2020-07-01

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