fully undertaken in northwest sub tropics of India. The present study was aimed to quantify proportion of carbohydrates and to characterise enzymes involved for their metabolism processes, physiological and biochemical parameters during fruit growth and
The relationship of retinoid and carotenoid metabolism with caecotrophy was studied in adult female New Zealand White rabbits kept in individual metabolic cages. Caecotrophy was prevented by the use of plastic collars. The dry matter, crude protein, fibre, fat and ash contents of hard and soft faecal samples were determined. The retinoid (retinol and retinyl palmitate) and carotenoid (canthaxanthin, β-carotene, β-cryptoxanthin, lutein and zeaxanthin) levels of the blood, liver, kidney, caecal content and faeces were also measured by high-performance liquid chromatography (HPLC). The prevention of caecotrophy resulted in a significant decrease of blood retinol (P < 0.001) and retinyl palmitate (P < 0.01) concentration but it did not cause any significant change in the retinol and retinyl palmitate contents of the liver and kidney. The caecal content (25.78 ± 6.87 µg/g) and the soft faeces (34.52 ± 10.48 µg/g) contained the retinoids in similar amounts. Various carotenoids were found in considerable amounts in different types of faeces, while in the tissues (blood, liver and kidney) these pigments did not occur in substantial amounts. Total carotenoid concentration was similar in the caecal content (11.23 μg/g) and in the caecotroph (13.85 μg/g). On the basis of the results it can be assumed that the retinoid content of rabbit feed could be lowered in the presence of adequate caecal function and caecotrophy.
Drugs, as molecules of non-natural chemical character for the human, are subjected to processes of absorption, distribution, metabolism, and excretion (known as ADME), regardless of the route of their
Gyetvai, E., Rácz, I., Lásztity, D., Szalai, G., Janda, T., Marton, L., Horváth, E., Páldi, E. (2002): Effect of S-methylmethionine as a protective compound on the metabolism of agricultural plants at low temperature.
Acta Biol. Szegediensis
[ 4 ], sodium consumption, and other factors [ 2, 3 ]. The great demands highly competitive sports (HCS) place on the cardiovascular system and the metabolism have been well studied [ 5–8 ]. Less is known about the delayed effects, especially after a