Spectroscopy and Spectral Analysis, Volume. 34, Issue 3, 601(2014)

Investigation of Light Penetration Depth and Distribution Inside Citrus Tissue

WU Chen-kai*, ZHANG Liang, SHEN Huang-tong, and FU Xia-ping
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    Experiment was carried out to explore the light intensity change inside citrus samples in the present study. An experimental platform was set up, including a light box, a spectrometer, a sample stage, an optic fiber probe, light sources, etc. The sample stage is adjustable in three dimensions. The optic fiber probe was used to measure the light changes by observing the light attenuation and intensity variation within the citrus tissues. A 632 nm laser source and a 50 W tungsten halogen lamp light source were used. Light intensity and transmittance were investigated at different positions within the citrus fruit. The band with most significant intensity difference was selected to analyze the light intensity and transmittance trends in different positions inside the citrus fruit. In order to examine the influence significance of the sample factor on test results, SPSS software was used to do the analysis of variation (ANOVA) of different samples. The results showed that light intensity and transmittance have a positive correlation with puncture depth, while citrus peel and stone have a more obvious attenuation effect than citrus flesh, and the influence of the sample factor on the test results is not significant. Further research can be carried out by improving the experimental device. The method used and results obtained in this study are valuable for studies on light transmission properties inside fruit tissue, not only for citrus but also for other kinds of fruits.

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    WU Chen-kai, ZHANG Liang, SHEN Huang-tong, FU Xia-ping. Investigation of Light Penetration Depth and Distribution Inside Citrus Tissue[J]. Spectroscopy and Spectral Analysis, 2014, 34(3): 601

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    Paper Information

    Received: May. 19, 2013

    Accepted: --

    Published Online: Mar. 14, 2014

    The Author Email: Chen-kai WU (wuchenkai@126.com)

    DOI:10.3964/j.issn.1000-0593(2014)03-0601-04

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