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vol. 14, nr. 2 (2009)
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Influence of different nitrogen fertilization and speed of compression on selected acoustic emission descriptors of spring wheat grain
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Ewa Gondek, Ewa Jakubczyk,, Aleksandra Sułek,, Grażyna Cacak-Pietrzak
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Faculty of Food Science, Warsaw University of Life Sciences ul. Nowoursynowska 159c, 02-776 Warszawa |
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vol. 14 (2009), nr. 2,
pp. 323-334
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abstract:
The aim of the work was to analyse the acoustic emission of three varieties of spring wheat at different levels of nitrogen fertilisation. Water activity, ash content, total protein and gluten were determined as well as the selected acoustic descriptors. The acoustic emission was measured using piezoelectric accelerometer 4381V Bruel&Kjaer. It was shown that the speed of compression influenced the total acoustic energy and the number of acoustic events. An increase of protein content of wheat variety Bryza and Zadra caused a decrease of energy in the range of 1-5kH as well as in the number of acoustic events, and an increase of the power partition slope.
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keywords:
acoustic emission, spring wheat, protein
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original in:
Polish
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