Fresh-cut or minimally processed vegetables are those which have been trimmed and/or peeled and/or cut into 100% usable product and still maintain freshness. Contrary to other processing methods (freezing, canning and drying for example) the minimal processing operations reduce the shelf life in relation to the raw material (intact product).In this...
Keeping-quality of individual cucumbers is limited by the green colour; the keeping-quality of batches of cucumbers is limited by the time it takes before 5␘f the cucumbers in the batch reach a predefined colour limit. From literature concerning the synthesis and degradation of chlorophyll and a published colour model (Schouten, Tijskens and Van Ko...
In agricultural products, variation exists in quality attributes between batches. Examples of this biological variation are well known and the general response is trying to suppress it as much as possible; to create uniformity using pre- andpostharvestmethods. This thesis shows a methodology that takes advantage of the biological variation, instead...
Dit rapport beschrijft hoe een oplossing gevonden kan worden voor bladverdroging van roos, door middel van het ontwikkelen van een snijbloemenvoedsel dat deze problemen niet veroorzaakt.
Brown discoloration as a result of polyphenoloxidase (PPO) is a well-known problem during food preservation and -processing, which already has been established long ago. Large quantities of fruits and vegetables are lost every year because of loss of taste or because the product looks unattractive to customers. Internal browning or brown core in pe...
This thesis deals with the analysis of postharvest physiological deterioration (PPD) in cassava tuberous roots at the physiological, biochemical and molecular level. By setting up a uniform visual system to monitor the onset and maintenance of PPD under the experimental conditions, amongst others physico-chemical properties of starch were character...
In The Netherlands Lilium is economically the fourth overall flower crop for cut flower production. Longevity is a main quality characteristic for cut flowers. During postharvest handling of Asiatic hybrid lilies pretreatment with chemical solutions containing silver is carried out to ensure a satisfactory longevity at the consumers'. However, the ...
The objective of the study described in this thesis was to explore the potentials of NMR for the study of water relations in harvested mushrooms ( Agaricus bisporus ). Since harvested mushrooms tend to continue their growth after harvest, their morphogenesis is heavily influenced by the external climatic conditions. Their respirative resources as w...
