جستجوی مقالات مرتبط با کلیدواژه « solanum lycopersicum l » در نشریات گروه « منابع طبیعی »

Considering the high perishability of agricultural products, especially vegetables, it is very important to use edible coating materials that increase their postharvest life and are edible and non-chemical.

In this study, the effect of tragacanth gum coatings (0, 5, 7.5, and 10 g.L-1) on the edible quality of tomato fruits cv. Falkato was investigated during 35 days of storage (15 °C and 85-95% relative humidity). The fruits were immersed in tragacanth gum solutions for three minutes and carefully weighed and labeled and packed after drying. During storage time, every one week (7 days) fruits were removed and the fruit weight loss, pH, soluble solids concentration (SSC), titratable acidity (TA), fruit firmness, shrinkage, and decay index were measured and compared with the uncoated sample (distilled water treatment).

According to the results the tragacanth gum coating significantly reduced the percentage of fruit weight loss and improved the quality of tomato fruits such as firmness, SSC and TA compared to the control sample. So, coated fruits showed better edible quality than uncoated fruits. Then tragacanth gum is recommended for use after harvesting the tomato fruit.

Research limitations:

 No limitations were founded.

Originality/Value: 

In this research, for the first time, the effect of tragacanth gum coatings on the storage life of tomatoes was investigated.

The aim of this work was to determine the effects of UV-C and alginate coating, alone or in combination, on extending the storability and the quality of cherry tomato.

Tomatoes were covered with a 2% alginate coating in combination with UV-C treatment or alone and stored at 10°C with 90-95% relative humidity for 20 days. Tomatoes were evaluated for weight loss, respiration rate, total soluble solids, titratable acidity, ascorbic acid, lycopene content, total phenolic content, antioxidant content and overall appearance every 5 day.

The results indicated that UV-C +Alginate treatment was highly effective in preserving fruit quality and delaying senescence. Alginate coating preserved brightness and visual quality of fruit while preventing decay. Overall, the integration of UV-C irradiation with alginate coating was the best treatment that could strongly inhibit the increase in the weight loss and respiration and achieved the highest ascorbic acid, total phenolic and antioxidant content. Single UV-C treatment had a positive effect on biochemical compounds at the beginning, but could not maintain this effect at the end of storage. Moreover, lycopene concentration increased as the senescence progressed, but observed higher lycopene contents in control samples.

 No limitations to report.

UV-C + alginate treatment may be a promising method of improving quality and extending the postharvest life of cherry tomatoes.