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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Vol. 7, Iss. 6 — Jun. 1, 2009
  • pp: 542–544

Identification of lactobacillus casei-BDI and Streptococcus thermophilus by fluorescence spectra

Hao Wu, Tuo Zhu, Wei Chen, Hao Zhang, and Jianlei Yang  »View Author Affiliations


Chinese Optics Letters, Vol. 7, Issue 6, pp. 542-544 (2009)


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Abstract

Fluorescence analysis applied in the study of lactic acid bacteria (LAB) provides a new method and theory to study probiotics and realize the detection and identification of the strains. It is also possible to achieve automation and computerization. In this letter, the differences between the fluorescence spectra of lactobacillus casei-BDI (Lc-BDI) and Streptococcus thermophilus (St) are shown, and the second-order derivative spectra are used to further study the diversity of these two strains. According to the results, with the excitation wavelengths of 285 and 340 nm, there are significant differences between them. The experiment is repeated for 6 times, showing good repetitiveness.

© 2009 Chinese Optics Letters

OCIS Codes
(000.1430) General : Biology and medicine
(300.6280) Spectroscopy : Spectroscopy, fluorescence and luminescence
(300.6540) Spectroscopy : Spectroscopy, ultraviolet

Citation
Hao Wu, Tuo Zhu, Wei Chen, Hao Zhang, and Jianlei Yang, "Identification of lactobacillus casei-BDI and Streptococcus thermophilus by fluorescence spectra," Chin. Opt. Lett. 7, 542-544 (2009)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-7-6-542


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