| Title |
Selective increase in pinolenic acid (all‐cis‐5,9,12–18∶3) in Korean pine nut oil by crystallization and its effect on LDL‐receptor activity
|
|---|---|
| Published in |
Lipids, April 2004
|
| DOI | 10.1007/s11745-004-1242-2 |
| Pubmed ID | |
| Authors |
Jin‐Won Lee, Kwang‐Won Lee, Seog‐Won Lee, In‐Hwan Kim, Chul Rhee |
| Abstract |
The aims of this study were to obtain concentrated pinolenic acid (5,9,12-18:3) from dietary Korean pine (Pinus koraiensis) nut oil by urea complexation and to investigate its cholesterol-lowering effect on the LDL-receptor activity of human hepatoma HepG2 cells. Pine nut oil was hydrolyzed to provide a low-pinolenic acid-containing FA extract (LPAFAE), followed by crystallization with different ratios of urea in ethanol (EtOH) or methanol (MeOH) as a solvent to produce a high-pinolenic acid-containing FA extract (HPAFAE). The profiles of HPAFAE obtained by urea complexation showed different FA compositions compared with LPAFAE. The long-chain saturated FA palmitic acid (16:0) and stearic acid (18:0) were decreased with urea/FA ratios (UFR) of 1:1 (UFR1), 2:1 (UFR2), and 3:1 (UFR3). Linoleic acid (9,12-18:2) was increased 1.3 times with UFR2 in EtOH, and linolenic acid (9,12,15-18:3) was increased 1.5 times with UFR3 in MeOH after crystallization. The crystallization with UFR3 in EtOH provided the highest concentration of pinolenic acid, which was elevated by 3.2-fold from 14.1 to 45.1%, whereas that of linoleic acid (9,12-18:2) was not changed, and that of oleic acid (9-18:1) was decreased 7.2-fold. Treatment of HepG2 cells with HPAFE resulted in significantly higher internalization of 3,3'-dioctadecylindocarbocyanine-LDL (47.0 +/- 0.15) as compared with treatment with LPAFAE (25.6 +/- 0.36) (P< 0.05). Thus, we demonstrate a method for the concentration of pinolenic acid and suggest that this concentrate may have LDL-lowering properties by enhancing hepatic LDL uptake. |
X Demographics
The data shown below were collected from the profile of 1 X user who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Hungary | 1 | 100% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 1 | 100% |
Mendeley readers
The data shown below were compiled from readership statistics for 27 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| New Zealand | 1 | 4% |
| Unknown | 26 | 96% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Researcher | 6 | 22% |
| Student > Ph. D. Student | 5 | 19% |
| Professor | 3 | 11% |
| Student > Master | 3 | 11% |
| Student > Postgraduate | 2 | 7% |
| Other | 4 | 15% |
| Unknown | 4 | 15% |
| Readers by discipline | Count | As % |
|---|---|---|
| Biochemistry, Genetics and Molecular Biology | 4 | 15% |
| Agricultural and Biological Sciences | 4 | 15% |
| Medicine and Dentistry | 3 | 11% |
| Chemistry | 3 | 11% |
| Pharmacology, Toxicology and Pharmaceutical Science | 2 | 7% |
| Other | 6 | 22% |
| Unknown | 5 | 19% |
Attention Score in Context
This research output has an Altmetric Attention Score of 4. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 18 September 2023.
All research outputs
#7,436,257
of 24,469,913 outputs
Outputs from Lipids
#582
of 1,955 outputs
Outputs of similar age
#19,116
of 60,432 outputs
Outputs of similar age from Lipids
#3
of 12 outputs
Altmetric has tracked 24,469,913 research outputs across all sources so far. This one has received more attention than most of these and is in the 69th percentile.
So far Altmetric has tracked 1,955 research outputs from this source. They typically receive a little more attention than average, with a mean Attention Score of 6.1. This one has gotten more attention than average, scoring higher than 70% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 60,432 tracked outputs that were published within six weeks on either side of this one in any source. This one has gotten more attention than average, scoring higher than 68% of its contemporaries.
We're also able to compare this research output to 12 others from the same source and published within six weeks on either side of this one. This one has done well, scoring higher than 83% of its contemporaries.