Investigation the application of Microwave in control of post harvest disease of peach
2007
Azarpazhooh, Elham | Nikkhah, Shohreh
This research has been carried out in Khorasan Agricultural and Natural Resources research center for 2.5 years (during 2003-2006),in order to study the effect of Microwave on storage time and control of post harvest diseases of peach. Peach cultivars (Alberta, Red and White and Green of Mashad) were harvested in the first and second decade of Jun, July and September and after sorting were stored at 40 c ؛ for 12 hours. Then the fruits were treated with a Microwave at the Frequency of 2450 MHZ and two intensities, low (200 w) and high (800 w) for 30, 60 and 120 seconds, the treated fruits and control were laid on in plastic trays and packed in perforated polyethylene bags and stored in cold storage (0؛c and 90_95% relative humidity) for 2 months. The qualitative tests including fungal contamination, soluble solids, titrable acidity, weight loss, firmness and color were done after 15, 30, 45 and 60 days .Sensory attributes were measured after 60 days storage. The experimental design was factorial adopted completely randomized design. Multiple range test (Duncan) were used to compare the means. The results showed that treating the fruit with Microwave decreased the microbial contaminations and increased pH, flesh firmness, total soluble solids of treated peach. Microwave (200 w, 60 s) maintained the qualitative characteristics of fruits. Panel test confirmed these results.
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