ACOUSTICSAcoustic wave application for the analysis of the quality and safety of porous food and non-food matrices • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •

OBJECTIVES n To develop analytic tools and algorithms for acoustic spectrometers based on the propagation

and reflection of acoustic waves; n To characterize the structure of porous matrices by advanced acoustic techniques; n Apply the acoustic spectrometers to determine rapid and non-invasive certain changes of

micro structures.

UNIQUE SELLING POINTS / BUSINESS VALUE n To investigate the capabilities of the different mock-ups and

proto-types of the acoustic spectrometers and get hold of representative porous matrices that can be tested for their structure/texture etc.

n To optimize and extend the algorithms of acoustic instruments. n To construct an acoustic device for testing the properties of

porous matrices in line.

PROJECT SUMMARYThe objective is to develop and build acoustic spectrometers to determine fast and non-invasive food/non-food quality and safety characteristics. It is making use of analytical tools and algorithms based on the propagation and reflection of acoustic waves to characterize and determine and monitor changes in microstructure by advanced acoustic spectrometers.

RESULTS n The 1st Acoustic spectrometer based on penetration (Fig. 1)

and the 2nd Impuls acoustic spectrometer (penetration/reflection system) (Fig. 2) including processing algorithms have been build;

n ACOUSTICS are in the testing and validation procedure for the use of novel techniques at point of crop harvest to inform the farmer about certain mycotoxin contaminations of cereals.

n The expected impact of non-destructive testing for the quality and safety of porous food will offer a powerful tool in product development, sensory sciences, materials characterization and monitoring of certain mycotoxins in cereal grains.

Fig 1. 1st equipment

Fig 2. 2nd equipment

CONTACTProject Leader: Grazina Juodeikiene Kaunas University of Technology ~ Kaunas, Lithuania ~ Tel: +370 456 557 Fax +370 37 300152 Email: grazina.juodeikiene@ktu.lt ~ Website: www.acoustics.ctf.ktu.lt

ACOUSTICS PARTNERS n Large companies (-) n Small companies (1) n Universities (3) n Research Institutes (2)

PROJECT START April 2011

PROJECT END April 2014

Lithuania

PROJECT CONSORTIUM

ACOUSTICSAcoustic wave application for the analysis of the quality and safety of porous food and non-food matrices • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •

Ukraine

WORKPACKAGE OVERVIEW

CONTACTProject Leader: Grazina Juodeikiene Kaunas University of Technology ~ Kaunas, Lithuania ~ Tel: +370 456 557 Fax +370 37 300152 Email: grazina.juodeikiene@ktu.lt ~ Website: www.acoustics.ctf.ktu.lt

ACOUSTICSAlgorithm and software for penetration/reflection system (VU&KTU)• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •

CALCULATION ALGORITHM:The form of source wave S (t) is calculated from the part T of signal coming directly in free space. The reflected signal R - is on hold and is separated from the direct. Object transfer function O - is the decomposition of reflection and source.

Measurement scheme:

Analyses of calibrated chocolate granules

Acoustic reflectance spectra:

The algorithm consists of: n calculation of the FFT spectrum and window

analysis; n filtering of the spectrum; n deconvolution of the data; n pulse response calculation.

The results are visualized and the sample quality is evaluated. If the results are sufficient they are send to the data base for later usage. The software uses GUI (graphic user interface) for visualization and analysis:

The algorithms for spectral analysis and evaluation of product quality level based on comparison of measured parameters with values stored in the database were designed:

CONTACTProject Leader: Grazina Juodeikiene Kaunas University of Technology ~ Kaunas, Lithuania ~ Tel: +370 456 557 Fax +370 37 300152 Email: grazina.juodeikiene@ktu.lt ~ Website: www.acoustics.ctf.ktu.lt