What is the cause of whitening and bad tasting of grape berries from the fruit stalk after storage?
It might be due to powdery mildew or downy mildew infection.
Thank you for your attention Dr. Adeogun, but I did not see any symptoms of powdery on the fruit.
may have different causes: rotting, sugar degradation, degradation of pectin by pectinase, pH change ...
Thank you for your attention to the question Prof. Essalmani. What is the cause of these changes such as sugar degradation or pH change? Do you have any references in this topic?
Thank you for your valuable contributions and articles, but I still do not exactly know what the cause of this disorder during the refrigerator storage.
what are your storage conditions: temperature, duration of storage, treatment with sterilization agents, packaging .....
what variety of vitis ?
The fruits are imported and have not been known since their harvest. They were healthy at the time of preparation, but this problem appeared after washing with water and detergent, and 2-3 days in a refrigerator at 4 °C.
Try to avoid putting the grapes under water because the humidity accelerates the rotting and ripening of the fruit
Thank you Prof. Essalmani for taking the time to answer my question.
Grapes produce bitter-tasting chemicals called tannins to keep animals and bugs from eating parts they don't want eaten, like leaves. The grape plants doesn't want its fruit to be eaten until its seeds are ready, so unripe grapes contain lots of tannins .The grapes that are drying out your mouth might be unripe, or they might be a kind bred for more tannins, like some wine grapes.
https://www.researchgate.net/publication/315951412_Off-odor_compounds_responsible_for_quality_loss_of_minimally_processed_baby_spinach_stored_under_MA_of_low_O_2_and_high_CO_2_using_GC-MS_and_olfactometry_techniques
- Badges
- Science topic
- Similar topics
- Methodology
- Research Methodology
- Research Papers