Scholarlink

<p>This study explored the extraction and microencapsulation of essential oil from <i>Pistacia terebinthus</i> cambium layer gum (PTG-EO) using response surface methodology (RSM) to optimize extraction efficiency. Significant factors such as extraction method, time, and power were optimized for conventional extraction (CE) and microwave-assisted extraction (MAE), yielding 24.48 and 21.97% essential oil, respectively. Encapsulation efficiency was influenced by temperature, water activity, and oil/wall ratio. The chemical profile of PTG-EO revealed α-pinene as the main component (80.65%). Antioxidant activity, assessed using DPPH and ABTS, showed that freeze-dried nanoencapsulated powder (NcP-Fr) exhibited superior radical scavenging activity compared to spray-dried micro-encapsulated powders (McP-Sp). SEM analysis revealed microspherical encapsulation with sizes around 33.52&#xa0;μm. Thermal degradation studies showed that the essential oil release from the wall material started at approximately 200&#xa0;°C, with 10.06% of the oil being released by this temperature. X-ray diffraction analysis revealed the crystallinity/amorphous ratio (14.4/85.56%) and confirmed the stable, homogeneous encapsulation structure, supporting the strong antioxidant performance of NcP-Fr.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Modelling on Extractions and Micro Nano Encapsulation of Pistacia terebintus Cambium Layer Gum Essential Oil; Antioxidant Activity and Structural Approach Via XRD, SEM and TGA/DSC

  • 期刊论文

  • 发表日期：

    2025年2月8日

查看全文
  • Eyyup Karaogul,
  • Abdulhalik Ugurtay,
  • Stephen S. Kelley,
  • M. Hakki Alma

摘要

This study explored the extraction and microencapsulation of essential oil from Pistacia terebinthus cambium layer gum (PTG-EO) using response surface methodology (RSM) to optimize extraction efficiency. Significant factors such as extraction method, time, and power were optimized for conventional extraction (CE) and microwave-assisted extraction (MAE), yielding 24.48 and 21.97% essential oil, respectively. Encapsulation efficiency was influenced by temperature, water activity, and oil/wall ratio. The chemical profile of PTG-EO revealed α-pinene as the main component (80.65%). Antioxidant activity, assessed using DPPH and ABTS, showed that freeze-dried nanoencapsulated powder (NcP-Fr) exhibited superior radical scavenging activity compared to spray-dried micro-encapsulated powders (McP-Sp). SEM analysis revealed microspherical encapsulation with sizes around 33.52 μm. Thermal degradation studies showed that the essential oil release from the wall material started at approximately 200 °C, with 10.06% of the oil being released by this temperature. X-ray diffraction analysis revealed the crystallinity/amorphous ratio (14.4/85.56%) and confirmed the stable, homogeneous encapsulation structure, supporting the strong antioxidant performance of NcP-Fr.