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2 Polish Journal of Food and Nutrition Sciences

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Fatty acid composition with emphasis on conjugated linoleic acid [CLA] and cholesterol content of Pakistani dairy products

100%

Talpur F. N. , Bhanger M. I. , Memon N. N.

tom 58

nr 3

The fatty acid composition of principally conjugated linoleic isomers and cholesterol content of some Pakistani dairy products (butter, cheese, yoghurt and cream) are reported. The most abundant saturated fatty acids within the dairy products studied were palmitic (C16:0), stearic (C18:0) and myristic acid (C14:0), contributing 50-55 g/100 g of total fatty acids. The oleic acid (C18:1) content was considerably higher (21.20-24.12 g/100 g of total fatty acids) than the other unsaturated fatty acids in all dairy products examined. The mean cholesterol content ranged between 91-200 mg/100 g in total fat. A positive correlation between cholesterol and fat content (r=0.6288) of dairy products was found for pooled data. Among dairy products investigated, cheese contains higher mean values (p<0.05) of CLA (9.00 mg/g) as compared to butter (8.18 mg/g), yoghurt (8.27 mg/g) and cream (8.52 mg/g) samples. In order to understand the factors that affect the CLA levels in dairy products the whole production system needs to be carefully checked, with special attention to animal feeding patterns, characteristics of milk used and different stages in processing.

Physiochemical characterization of Bauhinia purpurea seed oil and meal for nutritional exploration

88%

Arain S. , Sherazi S. T. H. , Bhanger M. I. , Mahesar S. A. , Memon N.

nr 4

The present study deals with characterisation of Bauhinia purpurea seed oil and meal for the quality evaluation. The characteristics of the extracted oil and the seed residue (meal) were determined out for their possible utilizations. The extracted oil was also analysed for iodine value, saponification value, unsaponifiable matter, acid value, peroxide value, refractive index and colour values. Fatty acid composition analysis by gas chromatography has shown that linoleic (55.34%) and oleic (11.84%) acids were the predominant unsaturated fatty acids, while palmitic acid (17.47%) and stearic acid (11.40%) were the major saturated fatty acids. Three tocopherols and six phytosterols were identified and quantified; among these, α-tocopherol and β-sitosterol was predominant, respectively. The physiochemical characteristics has revealed that Bauhinia purpurea oil has nutritive and dietetic potentialities. While proximate analysis of meal has shown that it my be used in the manufacturing of poultry and animal feeds.