Pressurized hot ethanol extraction of carotenoids from carrot by-products.
(2012) In Molecules 17(2). p.1809-1818- Abstract
- Carotenoids are known for their antioxidant activity and health promoting effects. One of the richest sources of carotenoids are carrots. However, about 25% of the annual production is regarded as by-products due to strict market policies. The aim of this study was to extract carotenoids from those by-products. Conventional carotenoid extraction methods require the use of organic solvents, which are costly, environmentally hazardous, and require expensive disposal procedures. Pressurized liquid extraction (PLE) utilizes conventional solvents at elevated temperatures and pressure, and it requires less solvent and shorter extraction times. The extraction solvent of choice in this study was ethanol, which is a solvent generally recognized as... (More)
- Carotenoids are known for their antioxidant activity and health promoting effects. One of the richest sources of carotenoids are carrots. However, about 25% of the annual production is regarded as by-products due to strict market policies. The aim of this study was to extract carotenoids from those by-products. Conventional carotenoid extraction methods require the use of organic solvents, which are costly, environmentally hazardous, and require expensive disposal procedures. Pressurized liquid extraction (PLE) utilizes conventional solvents at elevated temperatures and pressure, and it requires less solvent and shorter extraction times. The extraction solvent of choice in this study was ethanol, which is a solvent generally recognized as safe (GRAS). The extraction procedure was optimized by varying the extraction time (2-10 min) and the temperature (60-180 °C). β-Carotene was used as an indicator for carotenoids content in the carrots. The results showed that time and temperatures of extraction have significant effect on the yield of carotenoids. Increasing the flush volume during extraction did not improve the extractability of carotenoids, indicating that the extrication method was mainly desorption/diffusion controlled. Use of a dispersing agent that absorbs the moisture content was important for the efficiency of extraction. Analysing the content of β-carotene at the different length of extraction cycles showed that about 80% was recovered after around 20 min of extraction. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/2366986
- author
- Mustafa, Arwa LU ; Trevino, Leire Mijangos and Turner, Charlotta LU
- organization
- publishing date
- 2012
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Molecules
- volume
- 17
- issue
- 2
- pages
- 1809 - 1818
- publisher
- MDPI AG
- external identifiers
-
- wos:000300717200044
- pmid:22328079
- scopus:84857522800
- pmid:22328079
- ISSN
- 1420-3049
- DOI
- 10.3390/molecules17021809
- language
- English
- LU publication?
- yes
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Organic chemistry (S/LTH) (011001240)
- id
- 3a7033f0-0a8f-4505-b5e2-ea33b523791f (old id 2366986)
- date added to LUP
- 2016-04-01 14:25:27
- date last changed
- 2022-04-14 17:44:20
@article{3a7033f0-0a8f-4505-b5e2-ea33b523791f,
abstract = {{Carotenoids are known for their antioxidant activity and health promoting effects. One of the richest sources of carotenoids are carrots. However, about 25% of the annual production is regarded as by-products due to strict market policies. The aim of this study was to extract carotenoids from those by-products. Conventional carotenoid extraction methods require the use of organic solvents, which are costly, environmentally hazardous, and require expensive disposal procedures. Pressurized liquid extraction (PLE) utilizes conventional solvents at elevated temperatures and pressure, and it requires less solvent and shorter extraction times. The extraction solvent of choice in this study was ethanol, which is a solvent generally recognized as safe (GRAS). The extraction procedure was optimized by varying the extraction time (2-10 min) and the temperature (60-180 °C). β-Carotene was used as an indicator for carotenoids content in the carrots. The results showed that time and temperatures of extraction have significant effect on the yield of carotenoids. Increasing the flush volume during extraction did not improve the extractability of carotenoids, indicating that the extrication method was mainly desorption/diffusion controlled. Use of a dispersing agent that absorbs the moisture content was important for the efficiency of extraction. Analysing the content of β-carotene at the different length of extraction cycles showed that about 80% was recovered after around 20 min of extraction.}},
author = {{Mustafa, Arwa and Trevino, Leire Mijangos and Turner, Charlotta}},
issn = {{1420-3049}},
language = {{eng}},
number = {{2}},
pages = {{1809--1818}},
publisher = {{MDPI AG}},
series = {{Molecules}},
title = {{Pressurized hot ethanol extraction of carotenoids from carrot by-products.}},
url = {{http://dx.doi.org/10.3390/molecules17021809}},
doi = {{10.3390/molecules17021809}},
volume = {{17}},
year = {{2012}},
}