Deodorization by Solar Steam Distillation of Rosemary Leaves Prior to Solvent Extraction of Rosmarinic, Carnosic, and Ursolic Acids,ACS Sustainable Chemistry & Engineering

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Deodorization by Solar Steam Distillation of Rosemary Leaves Prior to Solvent Extraction of Rosmarinic, Carnosic, and Ursolic Acids
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2018-07-04 00:00:00 , DOI: 10.1021/acssuschemeng.8b02347
Soukaina Hilali _{1,

2,

3} , Anne-Sylvie Fabiano-Tixier ₃ , Mohamed Elmaataoui ₃ , Emmanuel Petitcolas ₃ , Abdessamed Hejjaj ₁ , Fatima Aitnouh ₁ , Ali Idlimam _{1,

4} , Magali Jacotet-Navarro ₅ , Antoine Bily ₅ , Laila Mandi _{1,

2} , Farid Chemat ₃

Affiliation

This study aims total valorization of rosemary for food applications, moving toward developing an original biorefinery concept using solar steam distillation (SSD) to extract essential oil while preserving active compounds in the raw material, mainly antioxidants, for a further extraction. The deodorization process is important to avoid the extraction of antioxidants with strong aromas which limit their utilization for food preservation. The SSD process was compared with conventional steam distillation (CSD) for essential oil extraction as well as deodorization of dried rosemary leaves. The treated leaves were recovered afterward for the extraction of antioxidants by solvent extraction to recover rosmarinic, carnosic, and ursolic acids. With standard protocol extraction and analysis, the antioxidants seem to be mostly preserved by SSD rather than by CSD. The Folin–Ciocalteu reagent was used to determine the polyphenol content, whereas diphenylpicrylhydrazyl (DPPH) was used to analyze the antiradical properties. It was found that both the polyphenol content and antioxidant activity were preserved after SSD. Scanning electron microscopy (SEM) and fluorescence microscopy showed complete destruction of glandular trichomes for both processes, which indicates that the extraction of essential oil was complete. Overall, the results specify clearly that solar steam distillation (SSD) is a green alternative, an efficient and economical process for essential oil extraction and leaf deodorization.

中文翻译：

在迷迭香，肌酸和熊果酸的溶剂萃取之前，通过迷迭香叶的太阳能蒸汽蒸馏除臭

这项研究旨在将迷迭香用于食品中的全部价值，朝着发展原始的生物精炼概念发展，即使用太阳能蒸汽蒸馏（SSD）提取精油，同时保留原材料中的活性化合物（主要是抗氧化剂）以进行进一步提取。除臭过程对于避免提取具有强烈香气的抗氧化剂很重要，因为这种抗氧化剂会限制其在食品保鲜中的利用。将SSD工艺与常规蒸汽蒸馏（CSD）进行了精油提取以及迷迭香干叶除臭的比较。然后回收处理过的叶子，以通过溶剂提取来提取抗氧化剂，以回收迷迭香酸，肌酸和熊果酸。通过标准协议提取和分析，抗氧化剂似乎主要由SSD而不是CSD保存。使用Folin–Ciocalteu试剂确定多酚含量，而使用二苯基吡啶甲基肼基（DPPH）分析抗自由基性能。发现SSD后多酚含量和抗氧化活性均得以保留。扫描电子显微镜（SEM）和荧光显微镜显示这两个过程的腺毛都被完全破坏，这表明精油的提取已经完成。总体而言，结果清楚地表明，太阳能蒸汽蒸馏（SSD）是绿色的替代方案，是一种有效且经济的精油提取和叶片除臭工艺。而使用二苯基吡啶甲基肼基（DPPH）来分析其抗自由基性能。发现SSD后多酚含量和抗氧化活性均得以保留。扫描电子显微镜（SEM）和荧光显微镜显示这两个过程的腺毛都被完全破坏，这表明精油的提取已经完成。总体而言，结果清楚地表明，太阳能蒸汽蒸馏（SSD）是绿色的替代方案，是一种有效且经济的精油提取和叶片除臭工艺。而使用二苯基吡啶甲基肼基（DPPH）来分析其抗自由基性能。发现SSD后多酚含量和抗氧化活性均得以保留。扫描电子显微镜（SEM）和荧光显微镜显示这两个过程的腺毛都被完全破坏，这表明精油的提取已经完成。总体而言，结果清楚地表明，太阳能蒸汽蒸馏（SSD）是绿色的替代方案，是一种有效且经济的精油提取和叶片除臭工艺。这表明精油的提取已完成。总体而言，结果清楚地表明，太阳能蒸汽蒸馏（SSD）是绿色的替代方案，是一种有效且经济的精油提取和叶片除臭工艺。这表明精油的提取已完成。总体而言，结果清楚地表明，太阳能蒸汽蒸馏（SSD）是绿色的替代方案，是一种有效且经济的精油提取和叶片除臭工艺。

更新日期：2018-07-04

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