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Register a new userتأثير موعد الجني والمعاملة بمادة 1- ميتيل سايكلو بروبان (1-MCP ) في جودة ثمار الكاكي صنف ( Hachiya ) أثناء التخزين المبرد
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Tishreen University رسالة ماجستير
Publication date
2015
fields
Agricultural Engineering
and research's language is
العربية
Created by
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تأثير موعد الجني والمعاملة بمادة 1- ميتيل سايكلو بروبان (1-MCP ) في جودة ثمار الكاكي صنف ( Hachiya ) أثناء التخزين المبرد
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أبو عمر واثق حمد . أساسيات دراسة الجدوى الاقتصادية دار الرضى للنشر دمشق سورية
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This research carried out to estimate the importance of use of 1-MCP in increasing
shelf life of Japanese persimmon ,var (Hachiya) , and maintaining fruits quality. The fruits
were treated with different concentrations of 1-MCP (0.5-1-1.5) ppm soon
ly after harvest
at 20Cᵒ during 24 h, then stored for 6 months at controlled conditions (2Cᵒ and 85% of
relative humidity). The samples were taken periodically (every month) to study the
changes in fruits composition during storage period.
The results showed that treatment with 1-MCP keeps fruits at higher degree of
firmness compared to the control, and decreased the loss in weight at storage period.The
treatment with 1-MCP decreased as well the changes in the fruits composition of Vitamine
c, total acidity (TA) compared to the control.
These results indicate that treatment with 1-MCP is effective in increasing shelf-life
of Japanese persimmon fruits var (Hachiya).
The effect of 1-MCP, CaCl2 and CaCl2 + 1-MCP treatments on the
respiration and ethylene production of ‘Cox’s Orange Pippin’ apples was
investigated. Treatments were applied at harvest and apples stored under air
storage (3°C or 10°C) for 0, 2, 4,
6, 8 and 10 weeks. At storage removal apples
were held at 20°C for 7 days shelf-life and respiration and ethylene production
measured. The CO2 rate in the CaCl2 and CaCl2 + 1-MCP treatments was
significantly lower than either the CaCl2 treatment or untreated control. The
CO2 rate reduced steadily during shelf-life especially for the 3°C stored fruit. A
significant effect of storage temperature on the CO2 rate during shelf-life could
not be determined. Application of 1-MCP or CaCl2+1-MCP decreased
significantly ethylene production during shelf-life at all storage periods.
Apple Fruits (Malus domestica Bork. cv. 'Golden Delicious') were
harvested at three successive dates with intervals of one week between each
date. The fruits were packaged with polyethylene films and then stored at 0±1
oC to study the effect of th
ese factors on the quality of the fruits and their role
to reduce weight loss after harvest. The natural loss of the fruit weight and
quality indices: fruit firmness, total soluble solids, titrable acidity and starch
content were studied.
تبحث هذه الدراسة في تأثير المعاملة في مرحلة ما بعد القطاف بالغمر بمحاليل كلوريد الكالسيوم خلال التخزين المبرد على جودة ثمار الكيوي وقدرتها التخزينية
The aim of present research was to study chemical, microbial and sensory
changes of commercial eggs during refrigerated storage and after treatment
with two different chlorinated water concentrations (100 ppm and 200 ppm)
and two different tempera
tures (20ºC and 40ºC) for 1 minute. Microbial
analysis showed that all eggs samples were free of Pseudomonas, Salmonella,
E.coli bacteria, molds and yeasts. The best treatment was (100 ppm at 20 °C),
followed by treatment with 100 ppm at 40 ° C and the third one was control
sample.
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