期刊
JOURNAL OF NEAR INFRARED SPECTROSCOPY
卷 11, 期 5, 页码 323-332出版社
SAGE PUBLICATIONS LTD
DOI: 10.1255/jnirs.383
关键词
NIR; spectroscopy; non-destructive test; mandarin; fruit quality; soluble solids content; acidity
Different measurement modes (reflectance, interactance and transmission) and spectral windows (500-1100 nm) were compared for their ability to predict non-destructively the harvest soluble solids content (SSC) and titratable acidity (TA) of Satsuma Mandarin (Citrus reticulata cv. Miyagawa). A direct transmission measurement mode (source and sensor opposite sides of fruit) coupled with a single spectral window from 700 to 930 nm delivered the most accurate SSC predictions (R-2 = 0.93, RMSEP = 0.32%). Accurate TA prediction was not possible with any measurement mode and the predictive ability that was achieved (best results: R-2 similar to 0.65, RMSEP similar to 0.15 %) was only afforded indirectly through a correlation with the skin chlorophyll changes that occur as the fruit mature.
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