Do you want to publish a course? Click here

Estimation of conjugated linoleic acid in some types of Syrian cheeses

حامض اللينوليك المقترن (CLA) في بعض أنواع الأجبان السورية

1196   0   16   0 ( 0 )
 Publication date 2011
  fields Food Sciences
and research's language is العربية
 Created by Shamra Editor




Ask ChatGPT about the research

This study aimed to estimate the concentration of conjugated linoleic acid (CLA) in some Syrian cheeses available in local market and the daily consumption of CLA due to its health importance and nutrition properties. Five types of cheeses were used namely, white cheese (12.92% fat) produced from cow's milk, white cheese (14.64% fat) produced from ewe's milk، processed cheese (18% fat), mozzarella cheese (29.18 fat) and vita cheese (Bulgarian cheese, 15.5% fat) produced at different manufacturing units.

References used
Azain, M. J. 2003. Conjugated linoleic acid and its effects on animal products and health in single-stomached animals. Proceedings of the Nutrition Society:62:319-328
Bondia-Pons, I., C. Molto-puigmarti, A. I. Castellote and M. C. Lopez-Sabater. 2007. Determination of conjugated linoleic acid in human plasma by fast gas chromatography. J. Chromatography, 1157:422-429
Chamba, J., J. Chardigny, S. Gnadig, E. Perreard, S. Chappaz, R. Rickert, H. Steinhart and J. Sebedio. 2006. Conjugated linoleic acid (CLA) content of French Emmental cheese: effect of the season, region of production, processing and culinary preparation . Lait :86: 461-467
rate research

Read More

The aim of this research is to study chemical and physico-chemical characteristics of Akawi, Medaffarah, Shankalish and Sorkeh cheeses for their identification and comparison with some internationally widespread cheeses. Several chemical analyses were performed on samples collected from different region famous with these products.
In this paper, we evaluated some varieties of local white cheeses (Baladi and Akkawi). 100 samples were collected randomly from various production sites in Syria between 2003 and 2004. Chemical and microbiological analyses were applied to determin e their suitability to the Syrian standards. This study shows that their quality do not fulfill the set minimum Syrian quality standards. The microbiological analyses (Coliform, Escherichia, Staphylococcus aureus, and Salmonella), rate was 75% for Coliform organisms and 66% for Escherichia in Baladi, while it decreased to 43% for Coliform and 25% for Escherichia in Akkawi. As concerns the positive coagulation bacteria (S. aureus), the rate exceeded 15% for both types of cheeses. 18% and 12% of Salmonella were found in Baladi and Akkawi also respectively. Various types of Coliform and Salmonella were identified. This study indicated that local cheeses have no uniform or standardized chemical characteristics. The averages of acidity, moisture content and salt percentage were 0.24%, 60%, and 2.6%, for Baladi and 0.28%, 53.53%, and 9.96% for Akkawi, respectively. The fat content had a wide range for all cheese samples. This study classified these fresh cheeses as raw cheeses that have vast flora and no uniform chemical and quality characteristics. The above findings, lead to different defects and properties which do not fulfill the Syrian quality standards. Thus, the quality of Syrian cheeses varieties is still questionable.
This paper, we evaluated some varieties of local cheeses. samples were collected randomly from various production sites in Homs. Chemical and microbiological analyses were applied to determine their suitability to the Syrian standards. This study sh ows that 54% of Baladi cheese samples, 25% of Akkawi(Cows), 18% of Akkawi(Sheep), 12% of Kashkawan ,2 %of Chelal samples, that 2% of Halloumi cheese samples, and 8% of Msannara cheese samples contained Escherichia coli bacterium. This results also indicate that 15% of Baladi cheese samples, 12% of Akkawi(Cows), 8% of Kashkawan cheese,4 %of Chelal cheese, and 8% of Msannara samples contained Staphylococcus aureus bacteria. As well as the percentage of Baladi cheese samples containing Salmonella bacteria was 8%, and Akkawi(Cows) cheese samples was 4%, and 2% in Msannara cheese samples. This study indicated that local cheeses have no uniform or standardized chemical characteristics. This study shows that 67% of Baladi cheese samples, 33% of Akkawi(Cows), 83 %of Chelal , and 100% of Kashkawan samples were contrary to the Syrian Normal Standard for dry matter. And all samples of cheese identical to the Syrian Normal Standard for sodium chloride 100%.
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.
This research investigates the ability of using cheese whey in producing soft drinks supported with natural juices (peach, orange, apple, and pomegranate). Two kinds of whey (sweet and sour) were prepared in the laboratory, and their most important o rganoleptic and chemical properties were determined. The percentages of total solids and lactose in sweet whey were 6.2 ±0.2% and 4.5 ±0.2% respectively, while for sour whey were 5.4 ±0.2% and 3.8 ±0.2%. Organoleptic evaluation showed that the fresh sweet whey had medium ability for consumption, while sour whey was rejected by the team of tasters with a significance level of 5%. Organoleptic evaluation also showed that the best percentage for the mixture of sweet whey and juice is 50:50 (v/v) with a very good degree of acceptance. Statistical analysis indicated that the produced drink from orange juice was the best drink at 5% significance level. It was followed by the juices of pomegranate, apple and peach respectively. As a result the sweet whey may be used after mixing it with the other studied juices at a percentage exceeding 40%, (best value is 50%) for the production of good soft drink. This produced drink must be consumed within a maximum period of 24 hours because of its low storability due to the absence of preservatives and heat treatment. Improving this storability requires further studies.
comments
Fetching comments Fetching comments
mircosoft-partner

هل ترغب بارسال اشعارات عن اخر التحديثات في شمرا-اكاديميا