Rapid detection of chlorophyll-a reduction in tropical fruit leaves using violet laser

2nd International Conference on Natural Products and Bioresource Sciences - 2018

生物科学;生态环境科学

Isnaeni^1 ; Masni^2 ; Shiddiq, M.^1

Research Center for Physics, Indonesian Institute of Sciences, Puspiptek, South Tangerang, Banten

15314, Indonesia^1

Department of Physics, Hasanuddin University, Perintis Kemerdekaan Road, KM.10, Makassar, South Sulawesi

90245, Indonesia^2

关键词: Chlorophyll degradation;    Chlorophyll quantity;    Chlorophyll spectrum;    Emission spectrums;    leaves;    Peak wavelength;    Photosynthesis process;    Rapid detection;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/251/1/012004/pdf
DOI  :  10.1088/1755-1315/251/1/012004

来源: IOP

【 摘 要 】

Chlorophyll is an important substance in photosynthesis process. Chlorophyll turns CO2 and water into energy required by trees. Detection of chlorophyll in leaves and trees will give us much information, such as chlorophyll quantity and quality. In this paper, we present a simple, yet powerful technique to observe chlorophyll-a degradation in tropical fruit leaves. We conducted experiment on mango, mangosteen, noni, jackfruit and rambutan leaves. We excited fresh leaves using violet (wavelength at 420 nm)laser and detected chlorophyll emission spectra. We found that there were noticeable differences among chlorophyll spectra from 5 leaves. We analyzed chlorophyll peak wavelength and intensity. We also observed time dependence chlorophyll emission upon continuous excitation to study chlorophyll degradation.