Fruit Internal Quality Evaluation using On-line Nuclear Magnetic Resonance Sensors

Non-destructive seed detection in mandarins: Comparison of automatic threshold methods in FLASH and COMSPIRA MRIs

“…However, the effect of sample movement on COMSPIRA images remains to be addressed. The use of oriented fruit in either FLASH or COMSPIRA images is basic in the performance of this application, which agrees with other studies (Kim et al, 1999;Chayaprasert and Stroshine, 2005). In future work, down shifting from 4.7 T towards low magnetic field strengths (lower than 1 T) would become a major issue in this application with the reduction in signal to noise ratio as the main hurdle to be faced when validating the performance of the segmentation algorithms.…”

“…There is a need for interaction between industry and researchers on this topic that would allow estab- lishing the targets susceptible of being accomplished since the classification performance in potential on-line NMR applications in the literature is very wide, ranging from less than 5% for pit detection in cherries and olives (Zion et al, 1994(Zion et al, , 1997Kim et al, 1999) to over 20% in the identification of internal browning in apples at high speed (Chayaprasert and Stroshine, 2005). Classification performance in this study is very encouraging, taking into account that static FLASH images are indistinguishable from on-line MRI when the appropriate image plane with regard to motion is selected (Hernandez-Sanchez et al, 2005.…”

“…Time consuming processes (needed for acquisition and post-processing) are important issues for on-line quality evaluation in the food industry. Early MRI applications in the food industry have been performed to address this variable (Zion et al, 1994(Zion et al, , 1997Chen et al, 1996;Kim et al, 1999), although these studies focused on real-time Magnetic Resonance projections and not 2D imaging, which is limited by its longer acquisition times. A different approach, demonstrated for the evaluation of internal browning in apples, is provided by Chayaprasert (2005).…”

Quality parameters of mango and potential of non-destructive techniques for their measurement — a review

“…sensory texture and taste. A device consisting of super-conducting magnet with surface coil and 150 mm diameter imaging coiled coupled to a conveyor system was reported for imaging MRI spectra of avocado fruits (Kim et al 1999). These spectra were used to measure the oil/water ratio in avocados and this ratio is correlated with percent dry weight.…”

The Application of Near Infrared Spectroscopy for the Assessment of Avocado Quality Attributes

“…A rapid and non-destructive system that can accurately and rapidly monitor internal quality attributes would allow the avocado industry to provide better, more consistent fruit eating quality to the consumer, and thus improve industry competitiveness and profitability. the potential to measure the DM percentage in avocados (Chen et al, 1993;Kim et al, 1999), but the cost and challenges for in-line use in the sorting line means that it is not currently a commercially viable application for high volume, low value items such as fruit and vegetables (Clark et al, 1997;Clark et al, 2003).…”