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Proceedings Paper

Structural study of aggregated β–carotene by absorption spectroscopy
Author(s): Li Ping Lu; Liang Shu Wei
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Paper Abstract

By UV-visible absorption spectroscope, the aggregated β-carotene in hydrated ethanol was studied in the temperature range of 5~55°C, with different ethanol/water ratio. And the structural evolutions of these aggregates with time were detected. The spectrophotometric analysis showed that the aggregate of β-carotene formed in 1:1 ethanol/water solution transfered from H-type to J-type with temperature increase. In 2:1 ethanol/water solution a new type of aggregate with strong coupling was predicated by the appearing absorption peak located at about 550 nm. In the time scales of 48 houses all the aggregated structures were stable, but the absorption intensity decreased with time. It was concluded that the types of aggregated β-carotene which wouldn’t change with time depended on the solvent composition and temperature.

Paper Details

Date Published: 24 October 2017
PDF: 7 pages
Proc. SPIE 10461, AOPC 2017: Optical Spectroscopy and Imaging, 1046106 (24 October 2017); doi: 10.1117/12.2281444
Show Author Affiliations
Li Ping Lu, Nanjing Agricultural Univ. (China)
Liang Shu Wei, Nanjing Agricultural Univ. (China)

Published in SPIE Proceedings Vol. 10461:
AOPC 2017: Optical Spectroscopy and Imaging
Jin Yu; Zhe Wang; Wei Hang; Bing Zhao; Xiandeng Hou; Mengxia Xie; Tsutomu Shimura, Editor(s)

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