Green extraction of silymarin from Milk thistle seeds and its encapsulation using the spray drying method
Tohamy, A., Elgammal, O., Taher, F. (2023). Green extraction of silymarin from Milk thistle seeds and its encapsulation using the spray drying method. EKB Journal Management System, 66(8), 485-497. doi: 10.21608/ejchem.2022.125049.6971
Asmaa Tohamy; Om El-Saad Elgammal; Fatma Abd El-Rahman Taher. "Green extraction of silymarin from Milk thistle seeds and its encapsulation using the spray drying method". EKB Journal Management System, 66, 8, 2023, 485-497. doi: 10.21608/ejchem.2022.125049.6971
Tohamy, A., Elgammal, O., Taher, F. (2023). 'Green extraction of silymarin from Milk thistle seeds and its encapsulation using the spray drying method', EKB Journal Management System, 66(8), pp. 485-497. doi: 10.21608/ejchem.2022.125049.6971
Tohamy, A., Elgammal, O., Taher, F. Green extraction of silymarin from Milk thistle seeds and its encapsulation using the spray drying method. EKB Journal Management System, 2023; 66(8): 485-497. doi: 10.21608/ejchem.2022.125049.6971

Green extraction of silymarin from Milk thistle seeds and its encapsulation using the spray drying method

Egyptian Journal of Chemistry
Volume 66, Issue 8, August 2023, Page 485-497  XML PDF (1.35 MB)
Document Type: Original Article
DOI: 10.21608/ejchem.2022.125049.6971
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Authors
Asmaa Tohamy1; Om El-Saad Elgammalorcid 2; Fatma Abd El-Rahman Taher email orcid 3
1Faculty of Home Economics, Al-Azhar University, Tanta, Egypt
2Faculty of Home Economics, Al-Azahr University, Tanta, Egypt
3Professor of Applied Physical Chemistry - Faculty of Science - Al-Azhar University (Girls)
Abstract
Silymarin was extracted from milk thistle seeds of Silybum marianum L. Gaertn through green extraction. Aiming at reducing energy power consumption by using renewable plant sources and environmentally friendly bio-solvents. A comparison study of extract yield, silymarin content and antioxidant activity of various extraction methods was studied. Green extraction was performed using two different polarities solvents (ethanol and ethyl acetate) using maceration extraction (ME) and the ultrasound-assisted extraction (UAE) method. The antioxidant activities of the resultant extracts were measured using the DPPH (2,2-Diphenyl-1-picrylhydrazyl) and ABTS (2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) methods. The highest yeiled, antioxidant activities (306.40 and 137.014 μM Trolox eq./mg for DPPH and ABTS, respectively) and silymarin content were found using ethanol solvent and UAE method compared to ethyl acetate and ME methods.
Encapsulation was applied using the spray drying method using different ratio of Maltodextrin (MD) and Gum Arabic (GA). The results showed that by increasing the percentage of gum arabic, the size of the particles decreased but the encapsulation efficiency was increased to reach the maximum of 84.45% at 20:80, MD: GA. The results also indicated that the incorporation of MD and GA improved the encapsulation process, which agreed with the encapsulation efficiency.
Keywords
Silymarin; maceration; ultrasound-assisted extraction; encapsulation; spray drying; Maltodextrin; gum arabic
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