CD Skripsi
Analisa Pengaruh Panjang Gelombang Laser Terhadap Hubungan Intensitas Fluoresensi Dengan Tingkat Kematangan Buah Sawit Menggunakan Metode Pencitraan Fluoresensi
Fluorescence Imaging has been developed as a nondestructive method for assessing fruit and vegetable qualities and attributes. There are many attributes can be accessed using a laser based fluorescence imaging such as chlorophyll content and other pigments responsible for fruit colors and ripeness. The assessment of these attributed depends on the wavelength of excitation lasers used. This research was aimed to study the effects of two different wavelengths of diode lasers applied to a fluorescence imaging system of loosed palm oil fresh fruits. The system consisted of two diode lasers each with 405 nm and 650 nm wavelength respectively and a monochrome camera with color filters. The filters used were a magenta filter for 405 nm diode laser and 650 nm diode laser. The samples were loose oil palm fresh fruits from two Tenera variety A and B, taken from the outer layer of palm oil fresh fruit bunches. The samples had three levels of ripeness with are Under Ripe (f0), Ripe (f3), and Over Ripe (f4) each had 3 loosed fruits. The recorded fruit images were analyzed using ImageJ software. The gray values which represented as fluorescence intensities for three ripeness categories and wavelengths were compared. The results showed that both wavelengths resulted different fluorescence intensities for the three ripeness levels. The red diode laser with 650 nm resulted higher fluorescence intensities compared to those of violet diode laser with 405 nm wavelength. The comparison are as follow Tenera A have fluorescence intensities difference 26,03% for under ripe, 21,84% for ripe, and 27,54% for over ripe, while Tenera B have fluorescence intensities 30,42% for under ripe, 43,12% for ripe, and 36,11% for over ripe.
Keywords: Laser-based Fluorescence Imaging, Loose Oil Palm Fruits, Ripeness, Wavelength Dependence, ImageJ
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