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 429138
Title Browning sensitivity of button mushrooms
Author(s) Weijn, A.; Tomassen, M.M.M.; Bastiaan-Net, S.; Hendrix, E.A.H.J.; Baars, J.J.P.; Sonnenberg, A.S.M.; Wichers, H.J.; Mes, J.J.
Source In: Proceedings of the 7th International Conference of the World Society for Mushroom Biology and Mushroom Products, Arcachon, France, 4 - 7 November, 2011. - - p. 208 - 216.
Event 7th International Conference of the World Society for Mushroom Biology and Mushroom Products, Arcachon, France, 2011-10-04/2011-10-07
Department(s) Food Chemistry Group
FBR Fresh Supply Chains
PPO Paddestoelen
PRI Biodiversity and Breeding
Publication type Contribution in proceedings
Publication year 2011
Abstract To study the sensitivity of Agaricus bisporus mushrooms to bruising, a reproducible method was developed to apply mechanical damage to mushroom caps and quantify the subsequent discoloration. The newly developed bruising device can apply damage to the cap tissue of intact button mushrooms by a slip-shear sliding process in a fast and reproducible way. A protocol has been developed to obtain the most reliable and reproducible method to compare bruising sensitivity of different A. bisporus strains. The severity of the bruise is quantified with a computer image analysis system. Pictures of the bruised mushroom caps were taken under controlled lighting conditions and calibrated to a local reference. Image analysis software was developed to calculate the whiteness index (L-(3xb*), as defined by Hunter). This method of bruising and image based quantification was subsequently applied to a collection of wild, commercial and hybrid A. bisporus strains. A significant difference was found between bruising sensitive mushrooms and bruising tolerant mushrooms. A correlation was found between discoloration by the bruising device and discoloration caused by transportation of mushrooms on a conveyor belt. Less correlation was found between post-harvest discoloration of undamaged stored mushrooms and the bruising device. This indicates that discoloration caused by bruising or by storage of intact mushrooms might have different mechanisms.
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