Naslov
NMR spectroscopy in food industry

Autori
Vikić-Topić, Dražen ; Kovaček, Damir ; Uršulin-Trstenjak, Natalija

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

Izvornik
Central European Meeting, The 4th CROATIAN CONGRESS OF FOOD TECHNOLOGISTS, BIOTECHNOLOGISTS AND NUTRITIONISTS / - Opatija, 2001, FQ/PP_30-FQ/PP_30

Skup
Central European Meeting, The 4th CROATIAN CONGRESS OF FOOD TECHNOLOGISTS, BIOTECHNOLOGISTS AND NUTRITIONISTS

Mjesto i datum
Opatija, Hrvatska, 03.10.2001. - 05.10.2001

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
NMR spectroscopy; food

Sažetak
Applications of high resolution NMR spectroscopy to food analysis go back to 1962, when the first determination of unsaturation in edible oils by 1H NMR was performed. From that time NMR was intensively used in edible fat and starch industries, becoming nowadays a routine method for the analysis of food samples. Most foods are highly labile systems subjected to biochemical and chemical changes. Since NMR spectroscopy is probing nuclei of atoms it is a very powerful tool for following these changes. NMR spectroscopy can determine the adsorbed water in meat product ingradients such as collagen, gelatine, egg albumin and glycine. The adsorption of water in proteins, and the motional behaviour of the adsorbed water have been also investigated using T1 measurements. 13C NMR is widely used for analysis of olive oils, as a method for the quantitative determination of fatty acids in the triacylglycerols. The triglycerides can crystallize into different crystal modifications (polymorphism), which have quite different melting characteristics. Although the solid fat content can be determined by dilatometry, DTA or DSC, it can be measured most rapidly by NMR. In the foodstuffs rich in carbohydrates NMR was successfully used to determine water content, bound water and in studying solution processes. 1H NMR measurements at high fields (11.7-14 T) are used for the apple juice authentication. Last few decades NMR was intensively used in wine, beer and spirit industries for alcohol determination, authentication and location of geographical origin of wines.

Izvorni jezik
Engleski

Znanstvena područja
Prehrambena tehnologija

POVEZANOST RADA