هدف البحث إلى دراسة أثر التضاد بين ثلاثة أنواع من البادئات التجارية المـستخدمة فـي صـناعة
اللحوم المتخمرة و تراكيز مختلفة من النتريت و ملح الطعام و حمض اللبن و الفلفل الأسود كـل علـى حـدة
لبيان أثرها في تثبيط النمو الميكروبي. احتوى البـادئ الأول علـى خلـيط بكتيريـا Staphylococcus
carnosus و بكتيريـا vitulinus Staphylococcus ، و احتـوى البـادئ الثـاني علـى خلـيط مـن
بكتيريا lactis Lactococcus وsakei Lactobacillus ، في حين احتوى البادئ الثالث على خليط مـن
Staphylococcus carnosus و Lactobacillus sakeiو Lactococcus lactis بكتيريــــا
و xylosus Staphylococcus . حضرت أربعة تراكيز من كل مضاف غذائي كلٌّ على حدة. قدر تأثير هذه
المضافات في النمو الميكروبي بمقارنة التعداد الكلي للبكتيريا بوجـود المـضاف مـع التعـدادها بغيـاب
المضاف ذاته. أظهر التحليل الاحصائي باستخدام تحليل التباين و اختبار أقـل فـرق معنـوي LSD عنـد
مستوى ثقة 05.0 أن حمض اللبن كان الأكثر تأثيراً في النمو الميكروبـي للبادئـات، و ظهـرت الفـروق
المعنوية بين التراكيز المستخدمة جميعها، في حين لم تؤثر المضافات الأخرى عند 100 ppm للنتريـت
و 1-3 % للملح و 1.0-4.0 % للفلفل الأسود، اعتمدت هذه النسب في تحضير منتجات اللحوم المتخمرة.
The research aimed to study the contrast between three commercial starter
cultures used in the manufacturing of fermented meat and different
concentrations of nitrite, salt, lactic acid and black pepper all alone on the
impact of inhibition of the microbial growth. The first starter culture contained
a mixture of Staphylococcus carnosus and Staphylococcus vitulinus, and the
second one contained Lactococcus lactis and Lactobacillus sakei while the third
one contained Lactococcus lactis, Lactobacillus sakei, Staphylococcus carnosus
and Staphylococcus xylosus. Four concentrations of each additive were
individually prepared and the inhibition activity on the microbial growth was
estimated by comparing the total microbial counts with and without the
addition of the same additive. Analysis of variance and least significant
difference (LSD) test at P<0.05 showed that the lactic acid was the most
influential on the microbial growth of starter cultures, and significant
differences were also detected between the used concentrations of lactic acid,
while no significant effect was observed when 100 ppm of nitrite, 1-3% of salt
and 0.1-0.4% for black pepper were used. Consequently, the previously
mentioned concentrations could be applied in the manufacturing of fermented
meats.
References used
Anon. 2010. Starter Cultures for Making Fermented Sausages. Chr. Hansen starter cultures Report. Copenhagen, Denmark
Berkel, B. M. V., B. V. D. Boogaard and C. Heijnen, 2004. Preservation of fish and meat. Digigrafi, Wageningen, Netherlands
Brennan, J. G. 2006. Food Processing Handbook. Wiley-VCH Verlag, Wokingham, UK
This study was conducted at the laboratory of Agriculture College,
Damascus University to produce smoked fermented semi-dry sausages using
three kinds of commercial starter cultures, First culture contained a
Staphylococcus carnosus and Staphyloco
hybrid commercial chicks (Hubbard Flex) were A total of /450/
reared from 1 to 42 days of age. Chicks were distributed into five
groups; each group contained 90 birds within three replicates. Five
diets were used; the first was the traditional die
This study was conducted to determine some heavy minerals in different types of
canned meat sold in the domestic market. Most of those cans were imported and processed
in different countries and they have different brands. The chosen samples after
Additive migration levels in food simulants from polymeric materials that
are intended to be into contact with food can be affected by additive stability
under the migration test conditions. In this work, the stability of four
antioxidants: Butyle
A new analytical method has proposed for determination of
five synthetic colorants used in the wine industry (i.e., Tartrazine,
Brilliant Black, Sunset yellow, Brilliant Blue and Erythrosine) by
reversed-phase high-performance liquid chromatograph