TY  - JOUR
U1  - Zeitschriftenartikel, wissenschaftlich - begutachtet (reviewed)
A1  - Jödicke, Katrin
A1  - Zirkler, Robin
A1  - Eckhard, Timo
A1  - Hofacker, Werner
A1  - Jödicke, Bernd
T1  - High End Quality Measuring in Mango Dryingthrough Multi-Spectral Imaging Systems
JF  - ChemEngineering; Special Issue "Selected papers from the Third Nordic Baltic Drying Conference (NBDC 2019)"
N2  - In modern fruit processing technology, non-destructive quality measuring techniques aresought for determining and controlling changes in the optical, structural, and chemical properties of theproducts. In this context, changes inside the product can be measured during processing. Especiallyfor industrial use, fast, precise, but robust methods are particularly important to obtain high-qualityproducts.  In this work, a newly developed multi-spectral imaging system was implemented andadapted for drying processes. Further it was investigated if the system could be used to link changesin the  surface spectral reflectance  during mango drying  with  changes in moisture content andcontents of chemical components.  This was achieved by recovering the spectral reflectance frommulti-spectral image data and comparing the spectral changes with changes of the total soluble solids(TSS), pH-value and the relative moisture contentxwbof the products. In a first step, the camera wasmodified to be used in drying, then the changes in the spectra and quality criteria during mangodrying were measured. For this, mango slices were dried at air temperatures of 40–80◦C and relativeair humidities of 5%–30%. Samples were analyzed and pictures were taken with the multi-spectralimaging system. The quality criteria were then predicted from spectral data. It could be shown thatthe newly developed multi-spectral imaging system can be used for quality control in fruit drying.There are strong indications as well, that it can be employed for the prediction of chemical qualitycriteria of mangoes during drying.  This way, quality changes can be monitored inline during theprocess using only one single measuring device.
KW  - Multi-spectral imaging systems
KW  - Fruit drying
KW  - Spectral changes
KW  - Chemical quality criteria
KW  - Quality prediction
Y1  - 2020
SN  - 2305-7084
SS  - 2305-7084
U6  - https://doi.org/10.3390/chemengineering4010008
DO  - https://doi.org/10.3390/chemengineering4010008
VL  - Vol. 4
IS  - Issue 1
SP  - 13
S1  - 13
PB  - MDPI AG
CY  - Basel, CH
ER  -