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Isolation of Anacardic Acid from Natural Cashew Nut Shell Liquid (CNSL) Using Supercritical Carbon Dioxide.

Philip, JosephYN LU ; da Cruz Francisco, José LU ; Dey, Estera LU ; Buchweishaija, Joseph; Mkayula, Lupituko and Ye, Lei LU (2008) In Journal of Agricultural and Food Chemistry 56(20). p.9350-9354
Abstract
Solvent extracted cashew nut shell liquid (CNSL), conventionally known as natural CNSL, is a mixture of several alkenyl phenols. One of these alkenyl phenols is anacardic acid, which is present at the highest concentration. In view of anticipated industrial applications of anacardic acid, the objective of this work was to isolate anacardic acid from natural CNSL by supercritical carbon dioxide (scCO 2). In this study, the solubility data for natural CNSL in scCO 2 under a range of operating conditions of pressure (100, 200, and 300 bar), temperature (40 and 50 degrees C), and CO 2 flow rate (5, 10, and 15 g min (-1)) were established. The best scCO 2 working conditions were found to be 50 degrees C and 300 bar at a flow rate of 5 g min... (More)
Solvent extracted cashew nut shell liquid (CNSL), conventionally known as natural CNSL, is a mixture of several alkenyl phenols. One of these alkenyl phenols is anacardic acid, which is present at the highest concentration. In view of anticipated industrial applications of anacardic acid, the objective of this work was to isolate anacardic acid from natural CNSL by supercritical carbon dioxide (scCO 2). In this study, the solubility data for natural CNSL in scCO 2 under a range of operating conditions of pressure (100, 200, and 300 bar), temperature (40 and 50 degrees C), and CO 2 flow rate (5, 10, and 15 g min (-1)) were established. The best scCO 2 working conditions were found to be 50 degrees C and 300 bar at a flow rate of 5 g min (-1) CO 2. Using 3 g of sample (CNSL/solid adsorbent = 1/2) under these scCO 2 conditions, it was possible to quantitatively isolate high purity anacardic acid from crude natural CNSL (82% of total anacardic acid) within 150 min. The anacardic acid isolated by scCO 2 was analyzed by different spectroscopic techniques (UV-vis, FT-IR, and (1)H NMR) and HPLC analysis, indicating that the anacardic acid isolated by scCO 2 has better quality than that obtained through a conventional method involving several chemical conversion steps. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Agricultural and Food Chemistry
volume
56
issue
20
pages
9350 - 9354
publisher
The American Chemical Society
external identifiers
  • wos:000260102500005
  • pmid:18811166
  • scopus:55549144382
ISSN
0021-8561
DOI
10.1021/jf801532a
language
English
LU publication?
yes
id
06adfa01-7f06-4a39-9c87-6bd691264679 (old id 1242727)
date added to LUP
2009-03-04 12:38:59
date last changed
2017-09-10 03:48:13
@article{06adfa01-7f06-4a39-9c87-6bd691264679,
  abstract     = {Solvent extracted cashew nut shell liquid (CNSL), conventionally known as natural CNSL, is a mixture of several alkenyl phenols. One of these alkenyl phenols is anacardic acid, which is present at the highest concentration. In view of anticipated industrial applications of anacardic acid, the objective of this work was to isolate anacardic acid from natural CNSL by supercritical carbon dioxide (scCO 2). In this study, the solubility data for natural CNSL in scCO 2 under a range of operating conditions of pressure (100, 200, and 300 bar), temperature (40 and 50 degrees C), and CO 2 flow rate (5, 10, and 15 g min (-1)) were established. The best scCO 2 working conditions were found to be 50 degrees C and 300 bar at a flow rate of 5 g min (-1) CO 2. Using 3 g of sample (CNSL/solid adsorbent = 1/2) under these scCO 2 conditions, it was possible to quantitatively isolate high purity anacardic acid from crude natural CNSL (82% of total anacardic acid) within 150 min. The anacardic acid isolated by scCO 2 was analyzed by different spectroscopic techniques (UV-vis, FT-IR, and (1)H NMR) and HPLC analysis, indicating that the anacardic acid isolated by scCO 2 has better quality than that obtained through a conventional method involving several chemical conversion steps.},
  author       = {Philip, JosephYN and da Cruz Francisco, José and Dey, Estera and Buchweishaija, Joseph and Mkayula, Lupituko and Ye, Lei},
  issn         = {0021-8561},
  language     = {eng},
  number       = {20},
  pages        = {9350--9354},
  publisher    = {The American Chemical Society},
  series       = {Journal of Agricultural and Food Chemistry},
  title        = {Isolation of Anacardic Acid from Natural Cashew Nut Shell Liquid (CNSL) Using Supercritical Carbon Dioxide.},
  url          = {http://dx.doi.org/10.1021/jf801532a},
  volume       = {56},
  year         = {2008},
}