Seaweeds are rich sources of bioactive natural products, which have been considered as potential biotic agents. Ulva flexuosa Wulfen is a species of seaweed which is endemic to the Persian Gulf. In this study, the effect of different concentrations of U. flexuosa extract on  the  antioxidant activity of Washington Navel orange (Citrus sinensis L. cv. Washington Navel)...

effect of calcium chloride on tomato quality and shelf life of petoearly ch, koral and rio grand tomato cultivars were studied at the agricultural and natural resources research center of west azerbaijan, iran over 2002-2003. a calcium chloride solution in 0,0.5% and 1% concentrations was sprayed on the tomatoes three times. the fruit was harvested at the mature green stage and stored in cold s...

Pomegranate is a subtropical fruit that is widely consumed as fresh fruit and juice, however, its postharvest life is limited mainly due to storage disorders. The aim of this study was to determine the effect of nitric oxide (NO) on antioxidant activity and quality attributes of pomegranate fruit. The fruits were dipped for two minutes into different NO concentrations (0, 30, 100, 300 or 1000 µ...

The onion is a low perishability product, but in long-term storage, postharvest losses occur due to some phytopathological and sprouting factors. The aim of this study was to evaluate the effect of storage in controlled atmospheres (CA) on onion cultivar “Sierra Blanca” for seven months. The onions were subjected to three treatments: 1 % O2 + 1 % CO2 (T1), 3 % O2 + 5 % CO2 (T2), both at 2.5 °C ...

ethylene affects the ripening of fruits and is naturally produced in most plant tissues. its production and accumulation during storage can cause serious damage to stored fruits such as black sweet cherries (cv: takdaneh mashhad). it affects shelf-life and can cause a marked increase in respiration rates, increasing ripening and senescence. in some commodities, accelerated aging and the initiat...

Passionfruit (Passiflora edulis, Sims, cultivar "Sweetheart") were subject to gamma irradiation at levels suitable for phytosanitary purposes (0, 150, 400 and 1000 Gy) then stored at 8 °C and assessed for fruit quality and total ascorbic acid concentration after one and fourteen days. Irradiation at any dose (≤1000 Gy) did not affect passionfruit quality (overall fruit quality, colour, firmness...

in order to alleviate chilling injury in pomegranate (punica granatum) cv. rabab due to cold storage, the fruits were dipped in 0.7, 1.4 and 2 mm of salicylic acid (sa) for 10 min. after 1, 2 and 3 months of storage at 2°c, the fruits were tested for chilling injury (ci) as well as some biochemical parameters. the results revealed that with increase in storage time, ci and ion leakage (il) incr...