Effect of the elicitation with magnetic field of corn seeds on the development and nutrition of sprouts

Objective: To evaluate the effect of exposing corn seeds to a 100 mT magnetic field (MF) on their sprout development. Design/methodology/approach: A completely randomized design was used, with five treatments (0, 10, 15, 30, and 60 minutes of MF exposure) with three repetitions (72 experimental units). From the germination process, the gibberellic acid concentration (GA3) and α-amylase activity were determined, morphometric and biochemical parameters of the foliar tissue from the sprouts were measured, such as total phenols, flavonoids, and catalase (CAT), peroxidase (POX) and phenylalanium ammonium lyase (PAL) activities. Finally, some nutritional quality parameters of the sprouts were quantified, such as protein and ash content. Results: The results showed that the treatment of corn seeds with a MF had a favorable effect on the germination process increasing the GA3 concentration. Also, improvement in the development and quality of the sprouts, by increasing the growth of the shoot, root length, concentration of phenolic compounds and ash content in corn sprouts was found. Limitations on study/implications: escalate elicitation to the field level. Findings/conclusions: The elicitation of corn seeds with a magnetic field generates positive changes that transcend the corn sprouts

Modelling of drying kinetics of paddy rice with emphasis on breakage quality for optimizing operating conditions

*INRA Génie industriel alimentaire Avenue des Olympiades 91744 Massy cedex Diffusion du document : INRA Génie industriel alimentaire Avenue des Olympiades 91744 Massy cedexModelling of drying kinetics of paddy rice with emphasis on breakage quality for optimizing operating conditions. 8. International Conference on Engineering and Food (ICEF-8

Kinetics of mechanical degradation of paddy rice during drying: influence of process operation conditions and modelling for control design

Editor : Mujumdar, A.S. Akritidis, C.B. ; Marinos-Kouris, D. ; Saravacos, G.D.Kinetics of mechanical degradation of paddy rice during drying: influence of process operation conditions and modelling for control design. 11. International Drying Symposium - IDS '9

Modelling of drying kinetics and processing quality degradation of rough rice for CAD and control design

Modelling of drying kinetics and processing quality degradation of rough rice for CAD and control design. 1. European Congress of chemical Engineering (ECCE 1

A compartmental model of thin-layer drying kinetics of rough rice

International audienceRough rice at about 21% (wet basis) was dried sit various conditions of temperatures and evaporating capacities of air. The influence of both parameters on drying rate has been studied. At high temperatures, high drying rates can be achieved with low evaporating capacities. In addition, desorption isotherms of rough rice were measured at 35, 60 and 85 degrees C and the experimental isotherms data were fitted using a modified Pfost equation. A compartmental model was developed to simulate the grain moisture content. Heat and mass transfer coefficients were optimized using a Nelder & Mead method. Internal mass transfer coefficient was written as an exponential function of the average moisture content and temperature of the grain and the external mass transfer coefficient as a function of air temperature. The compartmental approach predicts very well the average moisture content with a mean error of about 5% in static and dynamic conditions

Modeling and control of a mixed-flow rice dryer with emphasis on breakage quality

The rice kernel is modelled as a two water compartment system and as a whole concerning heat and quality. The external transfers are governed by Fick and Fourier laws. The compartmental approach is mainly used to render the internal resistance in the most efficient way on the computer. Mass transfer coefficients were adjusted with the help of constant condition drying kinetics. A primary validation of the model was observed when compared to experimental kinetics with transient phenomena. A secondary validation was done at the thick layer level. A simple PI controller with system linearization was designed and rested on the simulator. The latest results concern the simulation of a large scale semi-industrial dryer for both steady and transient states. The controller was tested successfully on the simulator. Results have shown a robust behaviour for such a non-linear system. On the other hand, performance is highly dependant upon the dryer setpoint. Previous work on corn dryers has shown that improving this performance wasn't realistic for practical reasons (e.g. lack of knowledge about the zeros of the system). The resulting model, in its two (steady and transient state) versions, is available as a cross-platform software and also on internet. The validity range for the model is 15-80 Celsius, 0-100% HR and 0-1 mis