January 2000
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1,648 Reads
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25 Citations
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January 2000
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1,648 Reads
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25 Citations
September 1995
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269 Reads
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4 Citations
The physical qualities of mushrooms are usually measured by sensorial and therefore subjective methods. Besides, the quality highly depends on their developmental stage. We have therefore searched for objective methods to determine the developmental stage and the quality of fruitbodies. Using a CCD-camera and image processing software, we found that gill colour and cap opening are highly correlated to maturity of mushrooms and can therefore be used to determine the developmental stage of fruitbodies. Our results show that objective methods such as computer image analysis offers an objective method for quality determination and is therefore a preferred tool for future work.
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... A sheet of white paper was used to calibrate for the brightness and to compensate for variations in illumination within the cupboard. The brown discoloration was analysed using specially developed software (based on [6] and [7]) according to the CIE L*a*b* colour system [8]. Pictures taken give RGB colour space values which first need to be transformed to CIE XYZ values, for which the following transformation matrix is used [ ...
Reference:
Browning sensitivity of button mushrooms
September 1995
... The solvent dependency while extracting different chemical compounds from a mushroom fruiting body has been studied [68] and could also be addressed in future studies. After the fruiting body is picked up from the forest, its dry-matter content starts to vary according to different environmental variables (i.e., relative humidity and temperature); also, the form and age of the mushroom fruiting body affect the dry-matter content [69]. A positive result is an indicator of the need to continue a more chemistry-oriented approach with the different extraction steps and full-scale chemical analyses. ...
January 2000