Advanced

Life cycle assessment of green pilot-scale extraction processes to obtain potent antioxidants from rosemary leaves

Rodriguez Meizoso, Irene LU ; Castro-Puyana, Maria; Börjesson, Pål LU ; Mendiola, Jose A.; Turner, Charlotta LU and Ibanez, Elena (2012) In Journal of Supercritical Fluids 72. p.205-212
Abstract
In this work, the water extraction and particle formation on-line (WEPO) process has been used to obtain dry antioxidant powder from rosemary leaves. This process includes pressurized hot water extraction (PHWE) and on-line drying of the extracts in one step. Based on previous works, water extraction at 200 degrees C was selected to achieve the maximum antioxidant activity while water flow rate was studied to determine its influence on powder formation. Other parameters influencing the drying process, such as scCO(2) pressure (80 bar) and flow rate (2.5 mL/min) and N-2 flow rate (0.6 mL/min) were settled to obtain a fine and constant spray. Powders obtained were evaluated in terms of particle size and morphology by scanning electron... (More)
In this work, the water extraction and particle formation on-line (WEPO) process has been used to obtain dry antioxidant powder from rosemary leaves. This process includes pressurized hot water extraction (PHWE) and on-line drying of the extracts in one step. Based on previous works, water extraction at 200 degrees C was selected to achieve the maximum antioxidant activity while water flow rate was studied to determine its influence on powder formation. Other parameters influencing the drying process, such as scCO(2) pressure (80 bar) and flow rate (2.5 mL/min) and N-2 flow rate (0.6 mL/min) were settled to obtain a fine and constant spray. Powders obtained were evaluated in terms of particle size and morphology by scanning electron microscopy (SEM) as well as antioxidant capacity by an in vitro DPPH antioxidant assay. In order to assess the environmental performance of the WEPO process, this has been compared in terms of Life Cycle Assessment (LCA) to other green processes typically used for antioxidant extraction from rosemary leaves, such as supercritical fluid extraction (SFE) and a static pressurized hot water extraction, PHWE, carried out with a commercial equipment, both followed by a conventional drying step. The WEPO process, carried out in one step, giving dry bioactive extracts from rosemary, results in lower environmental impacts and energy consumption than the other green processes studied. The sensitivity assessment demonstrated the importance of primary energy sources in the production of electricity used, especially when green processes are being implemented. (C) 2012 Elsevier B.V. All rights reserved. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Rosemary, On-line process, WEPO, Life cycle assessment, Pressurized hot, water extraction, SFE
in
Journal of Supercritical Fluids
volume
72
pages
205 - 212
publisher
Elsevier
external identifiers
  • wos:000313223900027
  • scopus:84867436250
ISSN
0896-8446
DOI
10.1016/j.supflu.2012.09.005
language
English
LU publication?
yes
id
c020d2eb-8942-461c-b240-50351327a3b9 (old id 3492281)
date added to LUP
2013-02-26 13:59:20
date last changed
2017-11-05 03:22:39
@article{c020d2eb-8942-461c-b240-50351327a3b9,
  abstract     = {In this work, the water extraction and particle formation on-line (WEPO) process has been used to obtain dry antioxidant powder from rosemary leaves. This process includes pressurized hot water extraction (PHWE) and on-line drying of the extracts in one step. Based on previous works, water extraction at 200 degrees C was selected to achieve the maximum antioxidant activity while water flow rate was studied to determine its influence on powder formation. Other parameters influencing the drying process, such as scCO(2) pressure (80 bar) and flow rate (2.5 mL/min) and N-2 flow rate (0.6 mL/min) were settled to obtain a fine and constant spray. Powders obtained were evaluated in terms of particle size and morphology by scanning electron microscopy (SEM) as well as antioxidant capacity by an in vitro DPPH antioxidant assay. In order to assess the environmental performance of the WEPO process, this has been compared in terms of Life Cycle Assessment (LCA) to other green processes typically used for antioxidant extraction from rosemary leaves, such as supercritical fluid extraction (SFE) and a static pressurized hot water extraction, PHWE, carried out with a commercial equipment, both followed by a conventional drying step. The WEPO process, carried out in one step, giving dry bioactive extracts from rosemary, results in lower environmental impacts and energy consumption than the other green processes studied. The sensitivity assessment demonstrated the importance of primary energy sources in the production of electricity used, especially when green processes are being implemented. (C) 2012 Elsevier B.V. All rights reserved.},
  author       = {Rodriguez Meizoso, Irene and Castro-Puyana, Maria and Börjesson, Pål and Mendiola, Jose A. and Turner, Charlotta and Ibanez, Elena},
  issn         = {0896-8446},
  keyword      = {Rosemary,On-line process,WEPO,Life cycle assessment,Pressurized hot,water extraction,SFE},
  language     = {eng},
  pages        = {205--212},
  publisher    = {Elsevier},
  series       = {Journal of Supercritical Fluids},
  title        = {Life cycle assessment of green pilot-scale extraction processes to obtain potent antioxidants from rosemary leaves},
  url          = {http://dx.doi.org/10.1016/j.supflu.2012.09.005},
  volume       = {72},
  year         = {2012},
}