Laser tweezers Raman spectroscopy combined with deep learning to classify marine bacteria

doi:10.1016/j.talanta.2022.123383

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	Laser tweezers Raman spectroscopy combined with deep learning to classify marine bacteria
	B. Liu; K. X. Liu; N. Wang; K. W. Ta; P. Liang; H. B. Yin and B. Li
刊名	Talanta
	2022
卷号	244 页码:6
ISSN号	0039-9140
DOI	10.1016/j.talanta.2022.123383
英文摘要	Rapid identification of marine microorganisms is critical in marine ecology, and Raman spectroscopy is a promising means to achieve this. Single cell Raman spectra contain the biochemical profile of a cell, which can be used to identify cell phenotype through classification models. However, traditional classification methods require a substantial reference database, which is highly challenging when sampling at difficult-to-access locations. In this scenario, only a few spectra are available to create a taxonomy model, making qualitative analysis difficult. And the accuracy of classification is reduced when the signal-to-noise ratio of a spectrum is low. Here, we describe a novel method for categorizing microorganisms that combines optical tweezers Raman spectroscopy, Progressive Growing of Generative Adversarial Nets (PGGAN), and Residual network (ResNet) analysis. Using the optical Raman tweezers, we acquired single cell Raman spectra from five deep-sea bacterial strains. We randomly selected 300 spectra from each strain as the database for training a PGGAN model. PGGAN generates a large number of high-resolution spectra similar to the real data for the training of the residual neural network. Experimental validations show that the method enhances machine learning classification accuracy while also reducing the demand for a considerable amount of training data, both of which are advantageous for analyzing Raman spectra of low signal-to-noise ratios. A classification model was built with this method, which reduces the spectra collection time to 1/3 without compromising the classification accuracy.
URL标识	查看原文
语种	英语
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/66792]
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	B. Liu,K. X. Liu,N. Wang,et al. Laser tweezers Raman spectroscopy combined with deep learning to classify marine bacteria[J]. Talanta,2022,244:6.
APA	B. Liu,K. X. Liu,N. Wang,K. W. Ta,P. Liang,&H. B. Yin and B. Li.(2022).Laser tweezers Raman spectroscopy combined with deep learning to classify marine bacteria.Talanta,244,6.
MLA	B. Liu,et al."Laser tweezers Raman spectroscopy combined with deep learning to classify marine bacteria".Talanta 244(2022):6.