Optimization studies and compositional analysis of subcritical water extraction of essential oil from Citrus hystrix DC. leaves

Subcritical water extraction (SWE) of essential oil (EO) from Citrus hystrix DC. leaves was optimized using response surface methodology (RSM), involving factors of particle size (0.5–1) mm, sample-to-solvent ratio (0.025–0.175) g/mL, extraction temperature (140− 180) ◦C, and extraction time (20−...

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Main Authors: Abdul Halim, Noor Amirah, Zainal Abidin, Zurina, Siajam, Shamsul Izhar, Chong, Gun Hean, Harun, Mohd Razif
Format: Article
Published: Elsevier BV 2021
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author Abdul Halim, Noor Amirah
Zainal Abidin, Zurina
Siajam, Shamsul Izhar
Chong, Gun Hean
Harun, Mohd Razif
author_facet Abdul Halim, Noor Amirah
Zainal Abidin, Zurina
Siajam, Shamsul Izhar
Chong, Gun Hean
Harun, Mohd Razif
author_sort Abdul Halim, Noor Amirah
collection UPM
description Subcritical water extraction (SWE) of essential oil (EO) from Citrus hystrix DC. leaves was optimized using response surface methodology (RSM), involving factors of particle size (0.5–1) mm, sample-to-solvent ratio (0.025–0.175) g/mL, extraction temperature (140− 180) ◦C, and extraction time (20− 40) minutes. Thus, an optimal EO yield of (2.14 ± 0.03) % (w/w) was obtained at 0.75 mm, 0.025 g/mL, 174 ◦C, and 29 min. SWE was found to yield significantly higher EO than the conventional hydrodistillation, within a shorter time. The regression model was established, presenting a significant quadratic correlation (R2 = 0.97) and adequate for predictions. SWE at 160 ◦C and 180 ◦C yielded 36 compounds, with isopulegol-dominant, exceeding SWE at 140 ◦C (21 compounds) and hydrodistillation (25 compounds). SWE with tunable temperatures not only improved the quantity of EO but was also capable of enhancing the quality because more EO compounds were extracted, offering diverse functionalities to nutraceutical sectors.
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spelling upm.eprints-944652023-02-07T03:50:02Z http://psasir.upm.edu.my/id/eprint/94465/ Optimization studies and compositional analysis of subcritical water extraction of essential oil from Citrus hystrix DC. leaves Abdul Halim, Noor Amirah Zainal Abidin, Zurina Siajam, Shamsul Izhar Chong, Gun Hean Harun, Mohd Razif Subcritical water extraction (SWE) of essential oil (EO) from Citrus hystrix DC. leaves was optimized using response surface methodology (RSM), involving factors of particle size (0.5–1) mm, sample-to-solvent ratio (0.025–0.175) g/mL, extraction temperature (140− 180) ◦C, and extraction time (20− 40) minutes. Thus, an optimal EO yield of (2.14 ± 0.03) % (w/w) was obtained at 0.75 mm, 0.025 g/mL, 174 ◦C, and 29 min. SWE was found to yield significantly higher EO than the conventional hydrodistillation, within a shorter time. The regression model was established, presenting a significant quadratic correlation (R2 = 0.97) and adequate for predictions. SWE at 160 ◦C and 180 ◦C yielded 36 compounds, with isopulegol-dominant, exceeding SWE at 140 ◦C (21 compounds) and hydrodistillation (25 compounds). SWE with tunable temperatures not only improved the quantity of EO but was also capable of enhancing the quality because more EO compounds were extracted, offering diverse functionalities to nutraceutical sectors. Elsevier BV 2021-08-18 Article PeerReviewed Abdul Halim, Noor Amirah and Zainal Abidin, Zurina and Siajam, Shamsul Izhar and Chong, Gun Hean and Harun, Mohd Razif (2021) Optimization studies and compositional analysis of subcritical water extraction of essential oil from Citrus hystrix DC. leaves. The Journal of Supercritical Fluids, 178. art. no. 105384. pp. 1-16. ISSN 0896-8446 https://www.sciencedirect.com/science/article/pii/S0896844621002266 10.1016/j.supflu.2021.105384
spellingShingle Abdul Halim, Noor Amirah
Zainal Abidin, Zurina
Siajam, Shamsul Izhar
Chong, Gun Hean
Harun, Mohd Razif
Optimization studies and compositional analysis of subcritical water extraction of essential oil from Citrus hystrix DC. leaves
title Optimization studies and compositional analysis of subcritical water extraction of essential oil from Citrus hystrix DC. leaves
title_full Optimization studies and compositional analysis of subcritical water extraction of essential oil from Citrus hystrix DC. leaves
title_fullStr Optimization studies and compositional analysis of subcritical water extraction of essential oil from Citrus hystrix DC. leaves
title_full_unstemmed Optimization studies and compositional analysis of subcritical water extraction of essential oil from Citrus hystrix DC. leaves
title_short Optimization studies and compositional analysis of subcritical water extraction of essential oil from Citrus hystrix DC. leaves
title_sort optimization studies and compositional analysis of subcritical water extraction of essential oil from citrus hystrix dc leaves
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