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1

A study of associations of the H-FABP genotypes with fat and meat production of pigs

100%

Urban T., Mikolasova R., Kuciel J., Ernst M., Ingr I.

Journal of Applied Genetics

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2002

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vol. 43

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issue 4

505-509

EN

Although the content of intramuscular fat (IMF) influences significantly meat quality, it can be estimated only after the slaughter of animals. Variants of the H-FABP gene were suggested as candidate genes influencing the variability of IMF. The effect of H-FABP ? HinfI polymorphism on the content of IMF, backfat thickness, the weight and percentages of major meat parts and of the leg in carcass weight was studied in a group of 97 pigs (46 gilts and 51 barrows) of Large White and Landrace breeds using the test of fattening capacity and carcass value. In the set of experimental animals, the frequencies of genes were H = 0.75 ? 0.03 and h = 0.25 ? 0.03. Biometric analyses did not corroborate differences among different H-FABP ? HinfI genotypes and all the traits under study. Only in genotypes HH and Hh the differences between least-square means of phenotypic IMF values under study were close to the limit of significance (P = 0.06).

2

The influence of brown coal and peat on the fatty waste bioutilisation - initial laboratory examination

88%

Wierzba S. L. A., Latala B.

Biotechnologia

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2000

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issue 3

193-201

EN

The aim of the paper is to determine whether the addition of brown coal and peat influences the rate of the aliphatic substance biodegradation in oily bleaching soil (OBS) by properly selected bacterial strains. OBS was taken from the NZPT (a fat-processing factory); its characteristics were acidity (pH 4.8) and a 14% aliphatic substance content. Laboratory examination showed that a 35% addition of brown coal and peat provided best conditions for the aliphatic substance degradation process. After 44 days of the experiment, the organic substance reduction was 47.1%, and the fat content was reduced to 0.9%. The application of the composite considerably reduced the period of the OBS biodegradation. In order that low-pH fatty waste could be utiliseed with the aid of bacterial strains, it needs to be neutralised beforehand.

3

Enzymatic modification of natural triacylglycerols and the properties of the obtained products

75%

Adamczak M.

Biotechnologia

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2005

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issue 1

131-151

EN

Structured triacylglycerols (sTAG) are chemical compounds with a precisely defined chemical and stereochemical structure whose natural nutritional and physico-chemical properties have been modified. Modified TAG can be synthesized with the application of genetic engineering, physical, chemical and enzymatic methods. Due to the demand for the precisely determined structure of the resulting sTAG, their synthesis with the use of lipases is preferred. Prepared pure fatty acids or their esters, as well as synthetic monoacid triacylglycerols are necessary for sTAG synthesis. The use of such unnatural substrates requires additional processes and is cost consuming. Additionally, it can lead to loss of valuable components present in natural oils and contribute to a decrease in the oxidative stability of the resulting products. The application of naturally occurring fats or oils can considerably simplify sTAG synthesis and reduce the costs of the processes. Recently, much attention has been paid to an assessment of nutritional properties of structured triacylglycerols or acylglycerols. The aim of this article is to present the methods of sTAG synthesis, including examples of the use of naturally occurring triacylglycerols as substrates.

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1 Wierzba S. L. A.

A study of associations of the H-FABP genotypes with fat and meat production of pigs

The influence of brown coal and peat on the fatty waste bioutilisation - initial laboratory examination

Enzymatic modification of natural triacylglycerols and the properties of the obtained products