تم دراسة التركيب البيوكيميائي عند بعض أنواع الجنس سيستوزيرا Cystoseira: (الطحالب البحرية السمراء Fucophycaea) Cystoseira elegans, Cystoseira barbata, Cystoseira compressa, Cystoseira caespitosa, Cystoseira barbatula و Cystoseira amentacea. جمعت العينات الطحلبية من موقع ابن هاني شمال اللاذقية, في فصل الربيع لعام 2014. تراوحت النسبة المئوية للسكريات المنحلة من (13- 56.78%) من الوزن الجاف. سجل النوع C.amentacea أعلى نسبة من البروتينات (21.76%), و النوع C.barbata أدنى نسبة (9.51%). ترواحت النسب المئوية لللبيدات من (1.25- 5.55%) من الوزن الجاف. سجلت القيمة العظمى لنسبة الرماد عند النوع C.caespitosa (31.18 %) و أدنى قيمة عند النوع C.amentacea (23.84 %). كانت النسبة المئوية لليود عند الأنواع المدروسة: C.compressa و C.caespitosa (0.68 %) , C.barbata (0.69 %) , C.barbatula (0.7%) , C.amentacea (0.71 %), C.elegans (0.8 %). و كانت النسب المئوية للمانيتول ضمن المجال: (2.91-4%). بينت نتائج تحليل التركيب البيوكيميائي للأنواع المدروسة الاختلاف في نسب القيم, و هذا يؤثر على الأهمية الاقتصادية للأنواع من جهة, بالإضافة إلى التأثير في توفر المادة الغذائية للعواشب الرئيسية و التي بدورها تؤثر على بيئتها و تركيب مجتمعاتها من جهة أخرى.
The biochemical composition of some species of Phaeophyceae (Cystoseira):
Cystoseira compressa, Cystoseira barbata, Cystoseira elegans, Cystoseira amentacea,
Cystoseira barbatula, Cystoseira caespitosa, have been studied. The algal specimens have
been collected from Ibn Hani coast north of lattakia in spring 2014. The soluble sugar
varies between (13- 56.78%) weight/dry weight [w/dw]. C.amentacea has the highest
content of proteins (21.76%), and C.barbata has the lowest (9.51%). Lipid varied between
(1.25- 5.55%) [w/dw]. The highest content of ash was in C.caespitosa (31.18%), and the
lowest in C.amentacea (23.84%). Iodine was: C.compressa and C.caespitosa (0.68 %),
C.barbata (0.69 %), C.barbatula (0.7%), C.amentacea (0.71%), C.elegans (0.8%).
Mannitol was within the range (2.91-4%) [w/dw]. Results of biochemical composition of
studied species showed the differences between the percentage of values, and this variety
affects on the economical value for the species, also affects on the major herbivorous food,
that affects on their environment and their community composition.
References used
AGUILERA, M. M; CASAS, V; CARRILLO, D. S; GONZÁLEZ, A. B; PEREZ, G. F. Chemical composition and microbiological assays of marine algae Enteromorpha spp. as a potential food source. Journal of Food Composition and Analysis 18, 2005, 79–88
BENJAMA, O; MASNIYOM, P. Nutritional composition and physicochemical properties of two green seaweeds (Ulva pertusa and U. intestinalis) from the Pattani Bay in Southern Thailand". Songklanakarin J. Sci.Technol. 33(5), 2011, 575-583
CAMERON, M. C; ROSS, A. G; PERCIVAL, E. G. V. Methods of the routine estimation of mannitol, alginic acid and combined fucose in seaweeds.J. Soc. Chem. Ind, London, 67, 1948, 161-164
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