عزلت 60 خميرة من عينات مصل اللبن السوري المجموعة من بعض المحافظات السورية المعروفة
بإنتاجها للألبان (دمشق – ريف دمشق – حماة – حلب – اللاذقيـة – ادلـب) و صـنّفت موروفولوجيـاً
بالاعتماد على أشكال المستعمرات و وصف الخلايا مجهرياً و أُجريت اختبارات متنوعة (النمو فـي وسـط
سائل – النمو في وسط صلب – تشكّل الأبواغ الأسكية) وفقـاً ل Barnett ، كمـا صـنّفت فيزيولوجيـاً
باستخدام تقنية ال API لتحديد نوع الخميرة فتبين وجود 10 أنواع من الخمائر، كانت خميرة Candida
krusei هي الأكثر انتشاراً في مصل اللبن بنسبة 66.21 % تأتي في المرتبة الثانية خميـرة Candida
lusitaniae بنسبة 66.16 % ثم كلّ مـن خميـرة capitatum Geotrichum و Saccharomyces
cerivisiae و minuta Rhodotorula في المرتبة الثالثة بنسبة 66.11 % ثـم خميـرة magnolia
Candida في المرتبة الرابعة بنسبة 33.8 % و في المرتبة الخامسة تأتي خميـرة famata Candida
بنسبة 66.6 % ثم تأتي خميرة Candida lipolytica في المرتبة السادسة بنسبة 5 % ثم كلُّ من خميرة
mucilaginosa Rhodotorula و kefyr Candida في المرتبة السابعة بنسبة 33.3 % كمـا تبـين
وجود اختلاف في أنواع الخمائر وفقاً للمحافظات المدروسة.
Sixty yeasts spp. were isolated from samples of whey which collected from
different locations in Syria. These yeasts were classified morphologically
according to Barnett’s and physiologically by API technique to identify the
species of Yeasts, where had found 10 classified yeasts as follows:
Candida krusei is the most of yeasts which founded in whey with 21.66 %,
and in the Second rank is Candida lusitaniae with 16.66 %. the third rank came
(Geotrichum capitatum, Saccharomyces cerevisiae, Rhodotorula minuta) with
11.66%, after that the Candida magnolia is ranked in the fourth rank by
distributing with 8.33%. as soon as the Candida famata came in the fifth rank
with 6.66%, and in the sixth rank we founded Candida lipolytica with 5%,
finally the Rhodotorula. mucilaginosa and Candida. kefyr came in the last rank
with 3.33%, so we noticed the variety of the yeasts in the studied locations in
Syria.
References used
Barnett, J. A., Payne, R. W., and Yarrow, D. (2000). Yeasts: characteristics And identification , 3 rd edition , Cambridge ,University press, England
Ben– Hassan, R. M, and Ghaly, A. E. (1994). Continuous propagation of Kluyveromyces fragilis in cheese whey for pollution potential reduction. Applied Biochemistry and Biotechnology . 47: 89 – 105
Bernal, S., Martin, E., Coronilla, J., and Valverda, A. (1998). Evaluation of the new API Candida system for identification of the Most clinically important yeast species. Diagn Microbial Infect Dis . 32: 217- 221
This research was conducted in the Agriculture Faculty- Food Science
Department, Damascus University, for detecting Lactic acid bacteria isolated
from Syrian dairy products (white fresh cheese-Leben), Samples were collected
from August, 2004 to Oc
Classified locality Yeasts have been culturing in plantology
department at the Faculty of Science-University of Damascus,
from genera of Pichia, Candida, Geotrichum, Rhodotorula, Phaffia
on solid Czhapek agar medium, and after incubated in appropr
Dairies and cheeses factories produce terrific quantities of whey in which
about 90% of them pelts into the sewerage system without making any useful of
them. Due to the valuable ingredients in whey (cheese, milk and butter). The
content can be se
This study was conducted at the laboratory of Food Science Department,
Agriculture College, Damascus University to isolate and characterize of
Lactobacilli bacteria from some Syrian foods and detection the effectiveness of
anti-pathogenic bacteria
Since the beginning of the twentieth century, researchers have isolated and
dentified spreaded and adapted yeasts to variow environmental conditions and
the types of the mediums in which they graw. The industrial features of the
isolated genera, e