Deteksi kelayuan daun teh dengan analisis citra speckel

Sasmitaninghidayah, Wiwis, Mardhiyah, Ainatul and Nadliriyah, Naqiibatin (2023) Deteksi kelayuan daun teh dengan analisis citra speckel. Research Report. Universitas Islam Negeri Maulana Malik Ibrahim Malang, Malang. (Unpublished)

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Abstract

Tea is one of the most widely consumed beverages globally because a variety of secondary metabolites are present in the leaves, including soluble sugars, amino acids, phenolic compounds, and aroma compounds (volatiles). Various types of tea are produced from processing shoots with 2-3 young leaves (P+2 or P+3). Pre- and post-harvest conditions can effectively influence tea quality. Exposure to cold, dryness, light, or insects at pre-harvest will improve the tea's flavor, whereas wounding, drying, or low temperatures applied at post-harvest will enhance the tea's aroma. All post-harvest processing methods require effective control so that the tea has the desired quality. Biospeckle laser (BSL) is a sensitive interferometric phenomenon for monitoring subtle changes in biological samples and has been adopted as a tool that can be applied in many fields, from medicine to agriculture. Its main advantages are related to the simplicity of the required apparatus as well as to its being a relevant non-destructive test (NDT) in biological applications. We will find a link between wilting and speckle images on tea leaves by using numerical analysis with THSP, COM, IM, and AVD values, as well as graphical analysis with the Fujii, GD, and SD methods. The results of numerical analysis, which include THSP, COM, correlation measurements, IM, and AVD, to analyze the image of tea leaves only show THSP which shows changes in biological activity in tea leaves. Meanwhile, test methods other than THSP did not show changes in biological activity that occurred in the tea leaves, even though the results of the homogeneity analysis showed that the sample was homogeneous in almost all parts. Meanwhile, the graphic analysis used (Fujii, GD, and SD) shows changes in biological activity in tea leaves. Biological activity is high at high water content, and biological activity decreases according to the decrease in water content in the tea leaves.

Item Type:	Research (Research Report)
Keywords:	BSL; tea drying; graphical method; numerical method
Subjects:	02 PHYSICAL SCIENCES > 0205 Optical Physics > 020599 Optical Physics not elsewhere classified
Divisions:	Faculty of Mathematics and Sciences > Department of Physics
Depositing User:	wiwis Sasmitaninghidayah
Date Deposited:	27 Nov 2023 11:01

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