Izvorni znanstveni članak
https://doi.org/10.33128/k.59.2.3
THE EFFECT OF DRYING TEMPERATURE ON THE COLORATION INTENSITY OF MARIGOLD INFLORESCENCES FOR ANIMAL FEED
Ana Matin
orcid.org/0000-0002-9949-0278
; Agronomski fakultet Sveučilišta u Zagrebu, Zagreb, Hrvatska
Tajana Krička
orcid.org/0000-0001-6374-5753
; Agronomski fakultet Sveučilišta u Zagrebu, Zagreb, Hrvatska
Tugomir Majdak
; Ministarstvo poljoprivrede, Zagreb, Hrvatska
Vesna Židovec
orcid.org/0000-0002-3429-3898
; Agronomski fakultet Sveučilišta u Zagrebu, Zagreb, Hrvatska
Vanja Jurišić
orcid.org/0000-0002-4071-8637
; Agronomski fakultet Sveučilišta u Zagrebu, Zagreb, Hrvatska
Magdalena Maričić
; Agronomski fakultet Sveučilišta u Zagrebu, Zagreb, Hrvatska
Mateja Grubor
orcid.org/0000-0001-6374-5753
; Agronomski fakultet Sveučilišta u Zagrebu, Zagreb, Hrvatska
Sažetak
Marigold (Calendula officinalis L.) is grown for its decorative and medicinal properties but in recent years its use in the food industry has increased. Fresh marigold inflorescences very quickly lose their properties, are a color and as such should be processed in optimum drying processes. The aim of this study was to investigate the influence of different drying temperatures on the color intensity of inflorescences in order to use marigold as animal feed compound. In the investigation orange and yellow calendula inflorescences were used. Inflorescences were dried at three different temperatures (41 °C, 52 °C and 63 °C), and qualitative properties (ash, fat starch and protein content), before and after the drying process were determined for the purpose of animal nutrition utilization according to the law NN 102/2016. By using the exponential equations, curves of water release from the inflorescences
depending on the drying temperature were made. Yellow petals cultivar released water faster at all temperatures. The color intensity was better in yellow flowers. Dehydration affected on the ash content of marigold inflorescences, and it was more effective and better at lower temperatures. With higher temperature fat and starch content in both color inflorescences was higher. From the results it can be
seen that the inflorescences of calendula after drying are suitable components in animal feed and the best results were obtained by drying at a temperature of 50 °C.
Ključne riječi
marigold; color; drying; animal feed
Hrčak ID:
199253
URI
Datum izdavanja:
20.4.2018.
Posjeta: 1.244 *