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Colour measuring instruments have become more reliable, smaller and faster than their predecessors at significantly lower costs for the users. This article has been written to provide practical guidelines for technologists, technicians and scientists to better understand colour measurement of dairy products. The results of milk colour measurement are used to determine the health of cows, as well as...
The objective of the study was to perform micromorphological analyses of the secretory structures of leaves and stems of oil-bearing industrial plants from the Lamiaceae family such as lemon balm (Melissa officinalis L.), peppermint (Mentha × piperita L.), sage (Salvia officinalis L.), marjoram (Origanum majorana L., syn. Origanum dubium Boiss.), rosemary (Rosmarinus officinalis L.) and common thyme...
The paper presents the qualitative composition of the fatty acids in the selected fish oil available on the Polish pharmaceutical market. Determination of the fatty acids composition was performed by gas chromatography (GC-FID). The results showed that all the tested fish oil composition contained essential fatty acids (EFA). All tested fish oils were characterized by high content of fatty acids from...
Biodiesel is a very attractive, biodegradable, renewable, and virtually nontoxic form of fuel. It is derived through base-catalysed transesterification of vegetable oils or animal fats. Analysis of biodiesel has become relevant, since the higher quality of the fuel is a key factor in commercialisation and market acceptance. The analytical methods employed are being constantly improved to meet this...
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