According to the algae ability in photosynthesis and carbohydrate production with
high value in nutrition and industry, this research was carried out during 2015 to study the
qualitative and quantitative content of carbohydrates in Chlorella vulgar
is which was
isolated from southern Syrian fresh water, and to determine the effect of the growth
conditions; temperature (15, 25, 35 C), sodium nitrate concentration (0.1, 0.25, 0.4 g/l) and
pH (6, 7, 8) on that content. The results showed that the total content was in the range of
20% to 40%;with galactose and rhamnose dominating among the rest of sugars. The
temperature 15°C was the best to get the greatest total content with the highest value of
starch, cellulose, hemicellulose and pectin. In addition, the low nitrate concentration 0.1 g/l
was combined with the highest content of pectin and its compounds, while the glucose
content was not affected by the nitrogen concentration. Related to pH effect, the acidic
media was proved to be the best for the highest carbohydrate content. Moreover, cellulose,
starch, and pectin increased in the alkali medium over the rest of carbohydrates.
Due to the lack informations on Biochemical of jellyfish in the Syrian waters, the
aim of this paper is determining the nutritional value and organic content for each of the
species Rhopilemanomadica, Pelagianoctiluca and Aequorea forskalea, and co
mpared the
biochemical composition of the three types , so the comparison showed clear differences in
the content of organic material, the sugar were the most concentrated in the three species
and lipid comes in second class, and then followed by the protein content and organic
carbon.A.forskalea was the most containing sugar and R.nomadica the most lipids content,
and P.noctiluca were the most protein content.R.nomadic was the highest content in
organic carbon, R.nomadica and P.noctiluca were convergent contents of organic
phosphorus, while the least contain of organic nitrogenwas in A.forskalea.
This study was carried out during 2015to determine some chemical Composition
of the fruit of some distribution phenotypes of Prunus ursina in different regions of
Westrens of Syria.
six natural distribution sites were determined(Duerbsndiana-Alnab
een-Alshohtte-
Helata-Btmazah-Wadeheleen), and 35 trees were determined as samples.
Fruits were harvested and following parameters were determined: dry matter, total
acids (T.A), total soluble solids (T.S.S), and total sugar.
Statistical analysis of investigated phenotypes showed that There were differences
between dry matter, total soluble solids (T.S.S), and total sugar between two groups.
the trees were distributed in two groups (A, B) .The results showed existence of most
trees in whole sits, while (J6 and KA6) were distributed in two different sits(Btmazah and
Duerbsndiana) .
Thirty strains of lactic acid bacteria were isolated from different local
fermented foods. Isolates were identified by using morphological, cultural and
biochemical tests using the API 50-CHL and API 20 Strep systems. Preliminary
characterization
tests showed that 33.33% of the isolates were rod shaped and
66.67% belonged to cocci bacteria.
The study was accomplished on proteins (caseins – whey proteins) of local milk after producing casein by precipitation with ethanol , and whey proteins by heat precipitation. The functional properties (Water Binding – Emulsifying Properties – Gelatio
n) were studied on prepared milk proteins , the witness experiment (pure casein) was followed for comparison.
This functional properties were repeated after adding xanthane and starch with three different concentrations for each kind of proteins , then the results were compared. For statistical analysis, the system of totally –random selections was applied, and a comparison was made as of L.S.D test, and possibility level at 5%. The results showed improvement in functional properties of prepared milk proteins when xanthane and starch were added in the percentage ( 5 - 5 – 10 % ) for the properties (Water Binding – Emulsifying Properties – Gelation ) respectively.
A hydroponic culture experiment was conducted under the green house
conditions, at the general commission of scientific agricultural research, and
the faculty of agriculture, Damascus university, during the year 2002-003.
The objectives of this in
vestigation concentrated on the influence of four
salinity levels (0-50-100-150 mM NaCl) on some physiological parameters of
eight sorghum genotypes. The experiment was designed in a RCB design with
three replications.
يعد هذا البحث، مساهمة هامة من أجل فهم ظاهرة التشكل النباتي لدى النبات Albizzia julibrissin
تحت تأثير السكريات المختلفة. فلقد استطعنا إيضاح دور التغذية الكربونية في تحديد و توجيه البرامج
المؤدية إلى التشكل النباتي في الزراعة المخبرية.
و نؤكد، بوضوح
، أن لمصدر التغذية الكربونية (السكريات المختلفة) دورًا محددًا في تطور أنظمة
الزراعة المخبرية، و يبدو أن هذا الدور يتركز عند مستوى انتقاء و توجيه برنامج التشكل النباتي المحتمل
ظهوره في المادة المدروسة، بغياب الهرمونات المضافة إلى وسط الزراعة. فبالواقع يحدث تبدل في
سلوكية المادة النباتية المدروسة (الخزعات الجذرية) في الزراعة المخبرية، وفقًا لتبدل الطبيعة الكيميائية
للسكريات المضافة، بحيث تحل السكريات الضرورية محل منظمات النمو من أجل تحقيق برنامج التعضي
النباتي.
Floral honey types produced locally were tested for their quality attributes,
using the standard procedures of the Association of the Official Analytical
Chemists (AOAC).
