Chapter 11 Photoacoustics — A Novel Tool for the Study of Aquatic Photosynthesis
The photoacoustic method allows direct determination of the energy-storage efficiency of photosynthesis by relating the energy stored by it to the total light energy absorbed by the plant material (Canaani et al., 1988; Malkin & Cahen, 1979; Malkin et al., 1990). These authors applied the photoacous...
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| author | Pinchasov-Grinblat, Yulia Dubinsky, Zvy |
| author_browse | Dubinsky, Zvy Pinchasov-Grinblat, Yulia |
| author_facet | Pinchasov-Grinblat, Yulia Dubinsky, Zvy |
| author_sort | Pinchasov-Grinblat, Yulia |
| collection | Directory of Open Access Books |
| description | The photoacoustic method allows direct determination of the energy-storage efficiency of photosynthesis by relating the energy stored by it to the total light energy absorbed by the plant material (Canaani et al., 1988; Malkin & Cahen, 1979; Malkin et al., 1990). These authors applied the photoacoustic method to leaves in the gas phase, where brief pulses caused concomitant pulses of oxygen that caused a pressure transient detected by a microphone. This method is based on the conversion of absorbed light to heat. Depending on the efficiency of the photosynthetic system, a variable fraction of the absorbed light energy is stored, thereby affecting the heat evolved and the resulting photoacoustic signal. The higher the photosynthetic efficiency, the greater will be the difference between the stored energy with and without ongoing photosynthesis (Cha & Mauzerall, 1992). These authors collected microalgal cells onto a filter and studied them by an approach similar to that previously used with leaves. In both cases, the oxygen signal is combined with that of thermal expansion resulting from conversion of the fraction of the light energy in the pulse that is not stored by photochemistry. |
| format | Online |
| id | doab-20.500.12854ir-30494 |
| institution | Directory of Open Access Books |
| language | eng |
| publishDate | 2021 |
| publishDateRange | 2021 |
| publishDateSort | 2021 |
| publisher | InTechOpen |
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| spelling | doab-20.500.12854ir-304942025-05-08T08:12:54Z Chapter 11 Photoacoustics — A Novel Tool for the Study of Aquatic Photosynthesis Pinchasov-Grinblat, Yulia Dubinsky, Zvy photosynthesis photoacoustics photosynthesis photoacoustics Algae Chlorophyll Nannochloropsis Phaeodactylum tricornutum Thermal expansion The photoacoustic method allows direct determination of the energy-storage efficiency of photosynthesis by relating the energy stored by it to the total light energy absorbed by the plant material (Canaani et al., 1988; Malkin & Cahen, 1979; Malkin et al., 1990). These authors applied the photoacoustic method to leaves in the gas phase, where brief pulses caused concomitant pulses of oxygen that caused a pressure transient detected by a microphone. This method is based on the conversion of absorbed light to heat. Depending on the efficiency of the photosynthetic system, a variable fraction of the absorbed light energy is stored, thereby affecting the heat evolved and the resulting photoacoustic signal. The higher the photosynthetic efficiency, the greater will be the difference between the stored energy with and without ongoing photosynthesis (Cha & Mauzerall, 1992). These authors collected microalgal cells onto a filter and studied them by an approach similar to that previously used with leaves. In both cases, the oxygen signal is combined with that of thermal expansion resulting from conversion of the fraction of the light energy in the pulse that is not stored by photochemistry. 2021-02-10T12:58:18Z 2019-10-04 14:35:28 2020-04-01T14:06:46Z 2016-08-01 23:55 2019-10-04 14:35:28 2020-04-01T14:06:46Z 2016-12-31 23:55:55 2019-10-04 14:35:28 2020-04-01T14:06:46Z 2013 chapter 612613 OCN: 1030819229 http://library.oapen.org/handle/20.500.12657/32333 https://directory.doabooks.org/handle/20.500.12854/30494 eng open access image/jpeg image/jpeg image/jpeg image/jpeg image/jpeg image/jpeg n/a n/a n/a n/a n/a n/a https://library.oapen.org/bitstream/20.500.12657/32333/1/612613.pdf https://library.oapen.org/bitstream/20.500.12657/32333/1/612613.pdf https://library.oapen.org/bitstream/20.500.12657/32333/1/612613.pdf https://library.oapen.org/bitstream/20.500.12657/32333/1/612613.pdf https://library.oapen.org/bitstream/20.500.12657/32333/1/612613.pdf https://library.oapen.org/bitstream/20.500.12657/32333/1/612613.pdf InTechOpen 10.5772/56600 10.5772/56600 035ecc65-6737-43cf-a13a-6bdf67ce01f4 Photosynthesis FP7 Ideas: European Research Council FP7 Ideas: European Research Council 7292b17b-f01a-4016-94d3-d7fb5ef9fb79 European Research Council (ERC) EU collection 249930 309646 FP7 open access |
| spellingShingle | photosynthesis photoacoustics photosynthesis photoacoustics Algae Chlorophyll Nannochloropsis Phaeodactylum tricornutum Thermal expansion Pinchasov-Grinblat, Yulia Dubinsky, Zvy Chapter 11 Photoacoustics — A Novel Tool for the Study of Aquatic Photosynthesis |
| title | Chapter 11 Photoacoustics — A Novel Tool for the Study of Aquatic Photosynthesis |
| title_full | Chapter 11 Photoacoustics — A Novel Tool for the Study of Aquatic Photosynthesis |
| title_fullStr | Chapter 11 Photoacoustics — A Novel Tool for the Study of Aquatic Photosynthesis |
| title_full_unstemmed | Chapter 11 Photoacoustics — A Novel Tool for the Study of Aquatic Photosynthesis |
| title_short | Chapter 11 Photoacoustics — A Novel Tool for the Study of Aquatic Photosynthesis |
| title_sort | chapter 11 photoacoustics a novel tool for the study of aquatic photosynthesis |
| topic | photosynthesis photoacoustics photosynthesis photoacoustics Algae Chlorophyll Nannochloropsis Phaeodactylum tricornutum Thermal expansion |
| topic_facet | photosynthesis photoacoustics photosynthesis photoacoustics Algae Chlorophyll Nannochloropsis Phaeodactylum tricornutum Thermal expansion |
| url | 612613 |
| work_keys_str_mv | AT pinchasovgrinblatyulia chapter11photoacousticsanoveltoolforthestudyofaquaticphotosynthesis AT dubinskyzvy chapter11photoacousticsanoveltoolforthestudyofaquaticphotosynthesis |