| Title |
Singlet oxygen quenching ability of naturally occurring carotenoids
|
|---|---|
| Published in |
Lipids, February 1994
|
| DOI | 10.1007/bf02537155 |
| Pubmed ID | |
| Authors |
Osamu Hirayama, Kyoko Nakamura, Syoko Hamada, Yoko Kobayasi |
| Abstract |
The singlet oxygen quenching ability of various naturally occurring carotenoids was examined by measuring toluidine blue-sensitized photooxidation of linoleic aci. To assess quenching, the oxidation of linoleic acid was followed by measuring oxygen consumption and ultraviolet absorbance at 235 nm. We found that oxygen quenching increased as the number of conjugated double bonds in the carotenoids increased, but quenching varied with chain structure and functional groups. Acyclic carotenoids enhanced quenching more than did cyclic carotenoids. Conjugated keto groups and the presence of a cyclopentane ring stimulated quenching, while hydroxy, epoxy and methoxy groups showed lesser effects. The photosynthetic bacterial carotenoids, spirilloxanthin and rhodopin, were found to be most effective as quenchers, followed by the cayenne carotenoid, capsorbin. |
Mendeley readers
The data shown below were compiled from readership statistics for 68 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Canada | 1 | 1% |
| Unknown | 67 | 99% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Master | 10 | 15% |
| Researcher | 9 | 13% |
| Student > Bachelor | 9 | 13% |
| Student > Ph. D. Student | 8 | 12% |
| Unspecified | 4 | 6% |
| Other | 15 | 22% |
| Unknown | 13 | 19% |
| Readers by discipline | Count | As % |
|---|---|---|
| Agricultural and Biological Sciences | 21 | 31% |
| Chemistry | 9 | 13% |
| Biochemistry, Genetics and Molecular Biology | 6 | 9% |
| Unspecified | 4 | 6% |
| Chemical Engineering | 3 | 4% |
| Other | 9 | 13% |
| Unknown | 16 | 24% |
Attention Score in Context
This research output has an Altmetric Attention Score of 3. 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 20 November 2021.
All research outputs
#7,451,284
of 22,780,165 outputs
Outputs from Lipids
#593
of 1,902 outputs
Outputs of similar age
#14,383
of 70,956 outputs
Outputs of similar age from Lipids
#4
of 8 outputs
Altmetric has tracked 22,780,165 research outputs across all sources so far. This one is in the 44th percentile – i.e., 44% of other outputs scored the same or lower than it.
So far Altmetric has tracked 1,902 research outputs from this source. They typically receive a little more attention than average, with a mean Attention Score of 5.8. This one is in the 23rd percentile – i.e., 23% of its peers scored the same or lower than it.
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 70,956 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 21st percentile – i.e., 21% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 8 others from the same source and published within six weeks on either side of this one. This one has scored higher than 4 of them.