Naslov
Iron and copper contents of wheat grains as related to grain protein

Autori
Čupić, Marina ; Vedrina-Dragojević, Irena ; Svečnjak, Zlatko ; Šebečić, Blaženka

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

Izvornik
2nd International IUPAC Symposium, Trace Elements in Food, Book of Abstract, Oral and Poster Presentation / Korsten, B. ; Bickel, M. ; Grobecker, K-H. - Brisel : Joint Research Centre, 2004, 81-81

Skup
2nd International IUPAC Symposium, Trace Elements in Food

Mjesto i datum
Bruxelles, Belgija, 07.09.2004. - 08.09.2004

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
iron; copper; protein; ICP-AAS; wheat grains

Sažetak
Cereal products are amongst the most important staple foods of mankind. Nutrients provided by bread consumption in industrial countries include close to 50 % of carbohydrates, one-third of the proteins and 50 - 60 % of the daily requirement of vitamin B. Moreover, cereal products are also a source of minerals and trace elements. Data on the concentration of minerals in the plant are very important since the shortage of indispensable elements affects vegetative and reproductive stage of life cycle and is a cause of typical changes in plant life. Since, iron and copper are trace elements involved in many important enzymes and / or proteins and thereby in many physiological functions of the organism and wheat is one of the major cereals the purpose of our study was to determine iron and copper content, as well as their relationship with crude proteins in wheat corn. Stimulated by perception that plants do not adopt nutritive elements from their environment at the same proportional rate they are contained in the environment but at the rates specific to a plant species as well as by the fact that physiological and biochemical processes in plants and, consequently, the adoption of ions are affected by environmental factors the investigation was carried out on five replicates of various wheat corn cultivars grown under the same topographical and different agrotechnical conditions in the course of two years. The protein content (N x 5.7) of the samples were assessed according to Kjeldahl method. Iron and copper concentrations after microwave digestion wave determined by inductively coupled plasma atomic emission spectrometry. Depending on cultivar, agrotechnical conditions and year of grown the mean values of five replicates of protein content, expressed on dry matter, ranged from 9.35 - 12.76 g/100g. The concentrations of iron and cooper depending on investigated sample ranged from 3.250 - 4.960 mg/100g dry matter and from 0.278 - 0.439 mg/100 g dry matter, respectively. Taking into account confidence limits there are significant differences in protein, iron and cooper content between some of investigated cultivars, cultivar for each vegetation years and due to agrotechnical conditions applied. Analysis of the results reveals positive correlation between proteins and investigated trace elements contents in examined wheat grain.

Izvorni jezik
Engleski

Znanstvena područja
Prehrambena tehnologija

POVEZANOST RADA