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Register a new userStudy the effect of processing operations on the quality properties of grape Pekmez (grape debs) and raisin produced in Swayda and Damascus countryside
دراسة تأثير عمليات التصنيع على بعض خصائص الجودة لكل من دبسي العنب والزبيب في محافظتي السويداء وريف دمشق
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Tishreen University رسالة ماجستير
Publication date
2015
fields
Agricultural Engineering
and research's language is
العربية
Created by
Shamra Editor
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تم إجراء هذا البحث في كلية الزراعة - جامعة دمشق والهيئة العامة للبحوث الزراعية في الفترة (٢٠١٣ - ٢٠١٢) وذلك على شقين الأول تم استخدام العنب السلطي لتصنيع الدبس وتكثيفه بطريقتين: بالطريقة التقليدية (تكثيف تحت الضغط الجوي النظامي) وبالطريقة المقترحة (تكثيف تحت التفريغ) وتم اضافة مادة التربة الكلسية للمواد الأولية أثناء المعاملات الأولية وفق النسبة التالية (٠، ٢.١)
This research was conducted at the Faculty of Agriculture - Damascus University and the Public Authority for Agricultural Research in the period (2012-2013) and on the first two parts were used grape Salti for the manufacture of molasses and condensed in two ways: the traditional way (to intensify under atmospheric pressure regulars) and the proposed method (intensify under vacuum ) was added limestone soil material (lime neighborhood) Pure article preliminary during the initial transactions according to the following levels: (0, 1.2%).
References used
Rossi M., Giussani E., Morelli R., Lo Scalzo R., Na ni R.C., Torreggiani D., 2003. Effect of fruit blanching on phenolics and radical scavenging active ity of highbush blueberry juice. Food Res. Intern. 36, 999-1005.
Roberts. J. S, Kidd, D. R. and Padilla-Zakour, o. 2008. Drying Kinetics of grape seeds. Journal of Food Engineering. Volume 89, Issue 4, p-460-465.
Rickman, J. C., Barrett, D. M., and Bruhn, C. M. 2007. Nutritional comparison of fresh, frozen and canned fruits and vegetables. Part 1. Vitamins C and B and phenolic compounds. J. Sci. Food Agric. (in press).
Rice-Evans, C. R. and Packer, L. 2003. Flavonoids in Health and Disease. New York, Marcel Dekker, Inc.
Rice-Evans, C. A., Miller, N. J., Bolwell, P. G., Bramley, P. M., et al. 1995. The relative antioxidant activities of plant-derived polyphenolic flavonoids. Free Rad. Res. 22:375-383.
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The investigation aimed to survey the thistle of genus Carduus
spp in its habitat in Alswayda and Damascus countryside and
associated plants, by visiting these areas through flowering seasons
of Carduus spp during 2013- 2015.
This research was carried out to study the effect of summer pruning on the growth and production of two grape varieties Vitis vivifera L. Halwani and Baladdi. The study was conducted in Kadmous during 2012 growing season on two varieties of grape tre
es reared on wiredraw. Seven treatments were used: 1- control, 2- shoot thinning, 3- shoot thinning and hedging, 4- shoot thinning and axillary shoot removal, 5- shoot thinning and axillary shoot removal, 6- shoot thinning and axillary shoot removal and leaf removal, 7- shoot thinning and leaf removal.
Results show that hedging improves weight of cluster and berry due to the increase in fruit set percentage which leads to an increase in grape production. Shoot thinning increases TSS yet other processes have negative effects: the hedging process increases acid titration in the Baladdi cultivar but in the Halwani cultivar hedging and axillary shoot removal increases acid titration.
Adding the sifting meals of the terebinth and grape seeds to wheat flour mixtures
caused increasing in fibers content , and decreasing in ash content ,meanwhile the protein
percentage remained steady , except the highest percentages (10 , 15 % ) .
Also the (10,15%) percentages adding caused a slight reducing in gluten quality as
showed by related tests : (fermentation time test , SDS test , moisture gluten test )
Also the adding of tested meals caused improvement in baking quality (loaf weight
during baking and during cooling) , also improvement the sensory properties of produced
bread significantly comparing with control sample.
On the other hand , 10 and 15 percentages of grape seed meal adding caused
reducing in sensory properties of produced bread.
Finally , the determined results related with rheological properties tested by Mixolap
apparatus showed improvement in thermal stability of starch enzymatic activity
comparing with control sample , meanwhile the other tested properties didn't affected at the
same level of addition .
This investigation was conducted on Ru140 grape rootstock at the General
Commission for Scientific Agricultural Research (GCSAR), Damascus with the
aim of in vitro vegetatively micropropagation using some plant growth
regulators on multiplication
and rooting to determine the best combinations
and concentrations of plant growth regulators that result in the best
multiplication rate, and best rooting crekeria (rate and roots number and
length). Results demonstrated that, the best medium for in vitro
micropropagation of the studied rootstock was the modified MS medium
supplemented with 4.44 μM BA + 0.49 μM IBA with multiplication rate of 7.72
new shoots every 4 weeks, and shoots lengt of 5.54 cm. These shoots were
transferred for 4 weeks to among elongation medium containing the same
medium with the addition of Kinetine at a concentration of 2.22 μM instead of
BA which led to a shoot elongation rate of 7.87 cm, then these shoots were
transferred to rooting medium for rooting, It was shown that using auxin IBA
at a concentration of 4.44 μM resulted at the highest rate of rooting (87%) with
the largest number of roots (7.56) when using the auxin IBA concentration μM
4.44 compared with the rest of other transactions and with the control as well.
However, The highest length of roots (6.29 cm) was observed on medim
contained lower IBA concentration (2.22 μM). Rooted Plants were acclimatized
gradually to ex vitro conditions with 70 % efficiency.
This study aimed to recognize the reality of the production and marketing of grape crop in alswieda province ,during the growing season 2011-2012 , through a stratified sample of farmers who grow it in alkafar , hobran , alraha , sahwit ,balata , mayamas , sahwit alkuther.
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