Chokanan mango juice samples subjected to UV-C exposure for 15 and 30 min exhibited significant improvement in
antioxidant activities and extractability of carotenoids, phenolic compounds, and flavonoids, when compared to freshly
squeezed juice. In addition, UV-C treatment showed significant reduction in microbial count. The shelf life of UV-C
treated juice stored at 4 ± 1 ◦C was extended for at least 4
weeks longer than freshly squeezed juice. Thermal treatment was more effective in completely inactivating microbial
growth in the juice, but detrimental effects on quality were
observed. Hence, UV-C treatment with appropriate optimization of processing variables is a feasible alternative to thermal
pasteurization. Further research work is needed for combining
UV-C with other non-thermal food processing technologies,
such as pulsed electric field and high pressure to guarantee improved quality juice together with safety standards.
Consequently, this study provides more attention for positive
implementation of UV-C treatment on a pilot scale.
Proper selection of packaging materials is necessary to prevent
absorption of moisture, microbial growth, peroxide and free fatty
acid formation which influence the overall product quality and
safety. This research was undertaken to study the effect of different
types of packaging on the moisture, peroxide, free fatty acid contents and microbial growth, fatty acid composition, sensory attributes of fresh raw pistachio samples during storage at 4 C for 30
days. Three types of packaging materials, namely CP, VP and MAP
were tested for their convenience for pistachio packaging. No significant differences were observed between moisture contents of
the samples. All the packaging materials except for normal delayed
the microbial growth, peroxide and free fatty acid formation of the
product. In conclusion, the most favorable packaging material for
maintaining the overall quality and safety of the fresh raw pistachio
were found to be MAP, which was followed by VP and CP. In
consequence, packaging type and storage conditions were taken
into account for the nut quality. Unsuitable packaging and storage
condition influences the quality and acts as an obstacle for the
export. The results are important for producers who wants to
export to other country. Consumers who like to consume fresh raw
pistachio could store it for one month in MAP without quality loss.
Osmotically dehydrated and CaCl2 infused purple sweet potatoes during storage under room temperature for 10 day and a low temperature (4˚C) for 25 day. Results showed was continuously decreased in Water activity (aw), pH, Texture, Color, sensory of purple sweet potatoes were decreased sustainably throughout the storage under both temperature
The osmotically Dehydrated purple sweet potatoes could able withstand for 25 days