Browning sensitivity of button mushrooms

Research output: Chapter in Book/Report/Conference proceedingConference paper

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.
Original languageEnglish
Title of host publicationProceedings of the 7th International Conference of the World Society for Mushroom Biology and Mushroom Products, Arcachon, France, 4 - 7 November, 2011
EditorsJ.M. Savoie, M. Foulonge-Oriol, M. Largeteau, G. Barroso
Pages208-216
Volume2
Publication statusPublished - 2011
Event7th International Conference of the World Society for Mushroom Biology and Mushroom Products, Arcachon, France -
Duration: 4 Oct 20117 Oct 2011

Conference

Conference7th International Conference of the World Society for Mushroom Biology and Mushroom Products, Arcachon, France
Period4/10/117/10/11

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Weijn, A., Tomassen, M. M. M., Bastiaan-Net, S., Hendrix, E. A. H. J., Baars, J. J. P., Sonnenberg, A. S. M., ... Mes, J. J. (2011). Browning sensitivity of button mushrooms. In J. M. Savoie, M. Foulonge-Oriol, M. Largeteau, & G. Barroso (Eds.), Proceedings of the 7th International Conference of the World Society for Mushroom Biology and Mushroom Products, Arcachon, France, 4 - 7 November, 2011 (Vol. 2, pp. 208-216)