Naslov
Nutritional value of broccoli florets as affected by nitrogen fertilization

Autori
Toth, Nina ; Fabek, Sanja ; Benko, Božidar ; Žutić, Ivanka ; Stubljar, Sanja ; Dobričević, Nadica

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of abstracts - IV Postharvest symposium with workshop: Postharvest storage of vegetables and fruits in western Balkan countries / - Sombor, 2011, 31-32

Skup
IV Postharvest symposium with workshop: Postharvest storage of vegetables and fruits in western Balkan countries

Mjesto i datum
Sombor, Srbija, 19.09.2011. - 20.09.2011

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Brassica oleracea var. italica; top and lateral florets; total phenols; soluble dry matter

Sažetak
Nutritive value of vegetables depends upon genetics and environment, including crop management practices, harvest and storage. To achieve a high yield, broccoli (Brassica oleracea var. italica) requires a good supply with easily accessible nutrients, especially nitrogen. Lateral broccoli florets develop after the harvest of top floret and provide a continuous supply of the market with this highly nutritious vegetable. Research with the aim to determine the chemical composition of the top and lateral broccoli florets at different doses of nitrogen fertilizer (0, 100 and 200 kg N ha-1) was carried out during summer-autumn growing period 2009. The field trial with hybrid broccoli cultivar 'Marathon' was laid out according to the randomized block design with four replications. At the harvest, representative samples of broccoli florets from each plot were frozen. After the storage at the temperature -18 °C, basic chemical composition (dry matter, total acidity, vitamin C, soluble dry matter, flavonoids, non-flavonoids and total phenols) was analyzed. There was a significant effect of floret type and rate of nitrogen fertilizer on the nutritional value of frozen broccoli. Dry matter content ranged from 12.17 to 14.92 %, while the soluble dry matter varied from 8.0 to 11.4 %. Total phenols content was in range from 89.88 to 124.88 mg kg-1 fw. Higher values of tested quality parameters determined in broccoli lateral florets, beside the yield, additionally justifies multiple harvest of broccoli cultivars with expressed production of lateral florets.

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)

POVEZANOST RADA