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).
This study was conducted at Gharabo farm, Fac. Agric. Damascus
Universityin order to determine the effect of heat sress and level of vit. C on the
blood indicators of of Japanese quailc A total of 252 females Chicks were
distributed randomly into
two groups (G and G2) at one day of age, The chicks
in G1were subjected to an ideal temperature required according to their age up
to 30 days old, while the chicks in G2 were subjected to heat stress at 42 °C
during the daytime from 8 am to 5 pm and to ideal temperature from 5pm to
8am for the same period of rearing. Chicks of each group were distributed into
three subgroups given three levels of vitamin C: 0, 10 and20 g/l, with three
replicates for each sub-group during the rearing period. Blood samples were
collected from eighteen birds selected randomly from each group. Results
indicated that there was a significant increase in both red blood cells and
hemoglobin in the stressed group.
This experiment was conducted at Kharabo farm, Faculty of Agriculture,
University of Damascus. A total of 252 chicks of Japanese quail breeder females
were distributed on the first day of life into two groups, Gicks in G1 were
reared from 1-28 day
s of age under ideal required temperature according to
their age, while chicks in G2, were subjected to heat stress from 8 am to 5 pm at
42 °C from the first day of hatching until 28 day of age and to the ideal
required temperature from 5 pm until 8 am. Chicks of each group were
distributed into three subgroups, with three replicates per subgroup.
The research aimed to compare the phenological, morphological and
biochemical characterestics of plain and curly-leafed parsley hybrids. The
hybrids were similar in germination percentage and leave number as well as in
the content of NO3. Signific
ant differences were observed in leaf area of plain
and curly-leafed hybrid (21.23 vs. 10.87 cm2), stem length (11.68 vs. 5.42 cm),
fresh (56.8 vs. 31.95 g) and dry weight (4 and 1.92 g, respectively). Comparing
to plain-leafed, the curly-leafed hybrid had a twice thicker stem, higher
chlorophyll, carotene and vitamin C contents (37,45, and 14.61%, respectively).
The research aimed to compare three hybrids of broccoli (Condi, Kuba and
NS50), grown under Damascus environment, for their morphological, yield and
quality characters. The results showed that NS50 had the largest number
(p<0.05) of leaves and ste
m length, Kuba had the greatest (p<0.05) main head
and the stalk length, In addition, higher TSS and vitamin C content while NS50
hybrid showed the best firmness, the highest chlorophyll and carotene contents
and higher fresh weight of main head than Condi. The lateral heads number
and their fresh weight were higher in Condi than the other hybrids.
This study was carried out in the laboratories of the Faculty of Agriculture,
Damascus University in 2012 season. Clusters of local yellowish baladi grape
exposed to the concentration (2000 Ppm) of gas SO2 for 3 hours were dried to
moisture conten
t not exceeded 18% by different drying methods (sun drying,
heat drying, solar energy-green house) in the aim of determining their effect on
some chemical indices (total sugar, pH, acidity, solid soluble, non enzymatic
browning), some antioxidants (vitamin C, total phenols) and antioxidant
activity according to 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging
assay. The results showed superiority (p<0.05) of the way solar drying of the
fruits of the grape-treatment with gas SO2 to maintain vitamin C (7.17 mg/ 100
g dry weight) while outperformed the fruits of grapes dried with heat treatment
and gas SO2 in content of phenols (7.24 mg acid Gaelic/ 100 g dry weight).
Results also showed that samples of grapes dried solar and non-treated with gas
SO2 noticeable increase in its activity in the antioxidant, which amounted to
82.42%. The results confirmed that the importance of treatment with gas SO2
prior to the fruits of grapes in reducing (p<0.05) the time required to complete
the drying process, especially in the way of thermal drying to (137 hours)
compared with other transactions.
This research was conducted during 2010-2011 growing seasons on 15 years old
trees of “Washington Navel” variety grafted on Citrus aurantium (sour orange) stock and
planted in the village of “Al-hinnady” in Lattakia. To determine the appropriate pr
eharvest
and post-harvest treatments to get the most production and better quality of fruits.
The main properties(yield of juice, total soluble solid, pH, total acidity, total
sugars), some antioxisant compounds as (vitamin C, carotenoids, total phenol,
anthocyanins), and antioxidant activity measured by DPPH method for some
main Syrian or
ange cultivars (navel, valancia, blood orange, and shamouti)
were investigated. The results showed that valancia was the highest in juice
yield (55.16%), while navel had the highest content of carotenoids(8.68mg/100g)
and the lowest one of vitamin C(31.53mg/100g). Whereas, blood orange was
superior in its content of total phenolic (295.73 mg gallic acid100/g) and
antioxidant activity, (74.833%) among the studied cultivars.
مساهمة في تحسين ثباتية فيتامين C في المستحضرات الجلدية: قمنا في هذا البحث بدراسة الثباتية الكيميائية للفيتامين C أو حمض الأسكوربيك في مستحضرات جلدية موضعية بتراكيز 2%
The research experiment was carried out during the 2007, 2008 and 2009
seasons on grape variety Al- Helwani (10 years old) to study the effect of NPK
fertilization rates and the triple superphosphate (T.S.P) application method on
some fruits chara
cters.Three fertilization NPK rates were used, rate 1
(75:25:50) kg/ ha, twofold and fourfold of rate 1, in three replicates in addition
to control. The application of (T.S.P) was on soil surface and at 30 cm depth.
The results showed significant increase of the total soluble solids (TSS), pH and
vitamin C compared to control. while the content of TSS in juice increased by
40.9%, 44.6%, 50.3% in the three rates, respectively, compared to control, pH
increased from 5.45 in control to 5.92; 5.89; 5.73 in the three rates,
respectively, in turn, significant decrease in total acidity (TA) was noted by
15.3, 11.1 and 42.8%, in the three rates, respectively, compared to control.
ASignificant increase of (TSS) by 2.5% and vitamin C by 10 % in deep T.S.P
application compared to the surface application, on the other hand, (TA)
decreased significantly by 4.2%, while, there was no significant differences in
pH, in both treatments.
