Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 411761
Title Investigation on the influence of pre-treatments on drying behaviour of broccoli by MRI experiments
Author(s) Jin, X.; Sman, R.G.M. van der; Gerkema, E.; Vergeldt, F.J.; As, H. van; Straten, G. van; Boom, R.M.; Boxtel, A.J.B. van
Event 7th Asia-Pacific Drying Conference, Tianjin, China, 2011-09-18/2011-09-20
Department(s) Systems and Control Group
Food Technology
Food Process Engineering
Publication type Contribution in proceedings
Publication year 2011
Abstract Abstract: Magnetic Resonance Imaging (MRI) allows the monitoring of internal moisture content of food products during drying non-destructively. In an experimental set-up with continuous and controlled hot air supply, the internal moisture distribution of broccoli with different pre-treatments are measured during drying. Moisture distribution, drying rate and shrinkage are compared and analyzed quantitatively. MRI results indicated that for fresh broccoli stalks the moisture content in the core of the sample increased after some hours of drying. With pre-treatments as peeling, blanching or freezing the moisture transport barrier in the skin of the broccoli sample was reduced. Shrinkage was uniform for most of the pre-treated samples and the moisture increment in the core did not occur. It was also found that with these pre-treatments progress of drying enhanced significantly. Therefore, from an drying efficiency and economic point of view, pre-treatments prior to drying offer important opportunities. Keywords: MRI, hot air drying, broccoli stalk, increased moisture content, pre-treatments
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