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Register a new userDetection of Antibacterial Effect of Lactic Acid Bacteria Isolated
التحري عن الفعالية المضادة لنمو البكتيريا لعزلات بكتيريا حمض اللبن معزولة من بعض الأغذية السورية
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Aِl-Baath University ورقة بحثية
Publication date
2018
fields
Food Sciences
and research's language is
العربية
Created by
Shamra Editor
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تم الحصول على 33 عزلة من بكتيريا حمض اللبن من عينات غذائية متنوعة (منتجات ألبان و مخللات)، و تم التعرف عليها استنادا إلى الخصائص المشتركة لبكتيريا حمض اللبن. تبين بالفحص المجهري أن 25 عزلة من هذه العزلات عصوية و 9 عزلات كروية.
Total of 33 isolates of lactic acid bacteria from different samples (Dairy products, Pickles), were isolated and identified according to the common characteristics of lactic acid bacteria. Twinty-five isolates were rods and 9 were cocci.
References used
Hassanzadazar, H., and Ehsani, A. (2013). Phenotypic Characterization of Lactic Acid Bacteria Isolated from Traditional Koopeh Cheese. Global Veterinaria. Vol. 10 (2): 148-152
Ishola, R. O., and Adebayo-Tayo, B. C. (2012). Screening of Lactic Acid Bacteria Isolated from Fermented Food for Bio-molecules Production. AU J.T. Vol. 15 (4): 205-217
Moghadam, M. Sh., Foo, H. L., Leow, T. C., Abdul Rahim, R. and Loh, T. Ch. (2010). Novel Bacteriocinogenic Lactobacillus plantarum Strains and Their Differentiation by Sequence Analysis of 16S rDNA,16S-23S and 23S-5S Intergenic Spacer Regions and Randomly Amplified Polymorphic DNA Analysis. Food Technol. Biotechnol. Vol. 48 (4): 476–483
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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
l growth. Lactic acid bacteria from different dairy
products, pickles and dried plant samples were isolated and identified
according to common characteristics. Results showed that twenty-three isolates
were rods while only 2 of the them were coccid. These isolates were tested for
their antimicrobial effect against pathogenic bacteria for both gram positive
bacteria (Staphylococcus aureus) and gram negative bacteria (Klebsiella
pneumonia and Escherichia coli). Fifteen isolates demonstrated antimicrobial
effect against the three tested bacteria, of which CP50 and CP46 isolates
showed the best antimicrobial effect. Results of the standard physiological and
biochemical tests identified fourteen isolates as Lactobacillus plantarum and one
isolate as Lactobacillus fermentum.
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
tober, 2005 from different areas in Syria. Analysis was
done for 245 bacterial isolates from 40 samples of white fresh cheese and 58
samples of yogurt (curd). Results showed that the genus Enterococcus was
dominant with a percentage of 47.52%; Pediococcus had a percentage of 26.3
%; while Lactococcus had a percentage of 15.38% with only 3.2% for
Lactobacillus.
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.
This research was conducted at the Faculty of Agriculture, Department of
Food Science laboratories to isolate lactic acid bacteria from some Syrian milk
products (milk, yogurt, cheese) and determine some morphological,
physiological characteristic and the ability of these isolates to ferment sugars.
Fifty eight isolates of lactic acid bacteria were obtained from different
local fermented foods. Isolates were identified using microscopic, cultural and
biochemical tests using API strips. Results showed that 44.83% of the isolates
were rod shape
d and 55.17% belonged to cocci bacteria.
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