This research aimed to develop both visible and shortwave near-infrared spectroscopy to evaluate the sensory qualities of cooked rice. In this study, four different types of milled rice were used: parboiled, white, new Jasmine, and aged Jasmine. The sensory qualities of cooked rice (adhesiveness, hardness, stickiness, dryness, whiteness, and aroma) were evaluated by a trained sensory panel. The results demonstrated that these sensory attributes correlated with visible and shortwave near-infrared spectral data. Both visible and shortwave near-infrared spectroscopy models used for predicting the sensory qualities of cooked rice were established using partial least squares regression. All prediction results for sensory qualities showed a range of R 2 val between 0.837 and 0.918, with the highest found for aroma (0.918). The proposed models can be utilized in quality control by the rice industry.

-Introduction. Because of the long transportation times and storage durations that are often experienced, it is important to understand how pomelo properties change over time; that will be indicative of how long samples can be stored before they drop below acceptable quality limits. As no information is available regarding storage of pomelo fruit in the literature, the goal of our work was to study the change in pomelo physicochemical and textural properties following storage over a period of approximately 4 months. Materials and methods. The changes in physical, chemical and textural properties of commercial pomelo fruit were extensively evaluated over the course of a 4-month storage period. The correlation among physical, color, chemical and textural properties were also assessed. Results. Color properties (L*, a*, b*) changed significantly with storage; however, they did not change much during the initial 45 days of storage. The change in soluble solids content (SSC), acidity (A) and the [(SSC) / (A)] ratio suggested that pomelo fruit should not be stored for more than 75 days. Crucially, our study demonstrates that the a* parameter (greenness, R = -0.556) correlates best with the chemical property the [(SSC) / (A)] ratio, which is a recognized measurement of the consumer acceptability of citrus fruit. This means that measuring a* is a non-destructive way of monitoring the taste characteristics of pomelos in storage. This property also correlated well with the average firmness of the fruit and with the flesh texture. Conclusion. This fundamental information on the pomelo fruit could prove useful in the physical handling and processing of the fruit by breeders and postharvest technologists as well as distributors, market agents, importers and exporters.Thailand / Citrus grandis / fruits / pomelos / storage / physicochemical properties / texture / rheological properties Évaluation des propriétés physico-chimiques et de texture de chadecs au cours de leur stockage.Résumé -Introduction. En raison des longueurs de transport et de stockage souvent constatées, il serait important de comprendre comment les propriétés des chadecs évoluent au fil du temps ; cette information serait utile pour évaluer combien de temps les échantillons peuvent être stockés tout en conservant une qualité gustative acceptable. Faute d'informations disponibles dans la litté-rature sur le stockage du chadec, nous avons étudié la variation des propriétés physico-chimiques et de la texture de ce fruit sur une période de stockage de 4 mois environ. Matériel et méthodes. Le changement des composantes de propriétés physiques, chimiques et de texture de chadecs commerciaux ont été évalués pendant 4 mois de stockage. Les corrélations entre ces diverses composantes ont également été évaluées. Résultats. Les paramètres de couleur (L*, a*, b*) ont varié de manière significative pendant le stockage, mais ils n'ont pas beaucoup changé au cours des 45 premiers jours d'entreposage. Le changement de la teneur en solides solubles (SSC), de l'acidit...