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MAJOR NUTRITIONAL PROPERTIES OF FOOD

Objective


The main nutritional properties of a food are defined by its major organic components: total protein, total fat, carbohydrate (starch and sugars) and dietary fibre. Knowledge of the contents of major elements is also important. Accurate determination of these components has become more important because of the greater demand for reliable food labelling and the intracommunity trade in food products, but collaborative studies have shown that even the most experienced laboratories can make significant errors.

A preliminary intercomparison of methods identified many of the methodological weaknesses. Five reference materials (full cream milk powder, wholemeal flour, rye flour, haricot beans and lyophilized pork muscle) have been prepared and shown to be homogeneous and stable and have been certified with respect to total nitrogen protein, ash, total fat, dietary fibre, lactose and calcium, potassium, sodium, magnesium, chloride and phosphorus. Indicative values for starch, free sugars and dietary fibre by the Englyst method were also established. Indicative values for several important vitamins were determined.
The main nutritional properties of a food are defined by its major organic components; total protein, total fat, carbohydrate (starch and sugars) and dietary fibre. Knowledge of the contents of major elements such as Ca, K, P and Na is also important.
Accurate determination of these components has become more important because of the greater demand for reliable food labelling (Directives 79/112/EEC and 90/496/EEC) and, the implications for intra-community trade in food products.
Although routinely determined in industry and for nutritional purposes, collaborative studies have shown that even the most experienced laboratories can make significant errors.

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Coordinator

RIKILT
Address

6700 AE Wageningen
Netherlands

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Participants (26)

Agricultural Research Center of Finland
Finland
Address

31600 Jokioinen

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Agricultural University
Netherlands
Address
12,de Dreijen
6703 BC Wageningen

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Bundesforschungsanstalt für Getreide- und Kartoffelverarbeitung
Germany
Address
Schützenberg 12
32756 Detmold

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COZ - Netherlands Controlling Authority for milk products
Netherlands
Address

3850 AG Leusden

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FEDERAL RESEARCH CENTRE FOR NUTRITION
Germany
Address
Haid-und-neu-strasse 9
76131 Karlsruhe

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Faculté des Sciences Agronomiques de l'Etat de Gembloux
Belgium
Address
2,passage Des Déportés
5030 Gembloux

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Institut National de la Recherche Agronomique (INRA)
France
Address

39800 Poligny

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Institut Technique des Céréales et des Fourrages
France
Address
16 Rue Nicolas Forin
75013 Paris

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Institute of Food Research
United Kingdom
Address
Norwich Laboratory Colney Lane
NR4 7UA Norwich

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Institute of Food Research
United Kingdom
Address
Norwich Laboratory Colney Lane
NR4 7UA Norwich

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L.N.E.T.I.
Portugal
Address
1/11,rua Vale Formoso De Baixo
1900 Lisboa

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Laboratory of the Government Chemist (LGC)
United Kingdom
Address
Queen's Road
TW11 0LY Teddington

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Milchwirtschaftliche Untersuchungs- und Versuchsanstalt Kempten
Germany
Address
Hirnbeinstraße 10
87435 Kempten

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Ministerio de Sanidad y Consumo
Spain
Address
Carretera Majadahonda - Pozuelo, Km 2,2
28220 Majadahonda (Madrid)

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Ministère des Affaires Economiques
Belgium
Address
17a,rue De La Senne
1000 Bruxelles

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NIZO
Netherlands
Address

6710 BA Ede

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National Food Administration
Sweden
Address
5,hamnesplanaden
75126 Uppsala

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National Food Agency of Denmark
Denmark
Address
19,mörkhöj Bygade
2860 Söborg

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Plasmon Dietetici Alimentari SpA
Italy
Address
Via Cadolini 26
20137 Milano

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RIGB-Keuringsdienst van Waren
Netherlands
Address

6201 GA Maastricht

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Rijkszuivelstation
Belgium
Address
370,brusselsesteenweg
9090 Melle

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Statens Mejeriforsog
Denmark
Address
56,roskildevej
3400 Hillerod

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TECAN AG
Switzerland
Address
80,feldbachstrasse
8634 Hombrechtikon

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TNO-CIVO Institutes in Zeist
Netherlands
Address

3700 AC Zeist

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Unilever UK Central Resources Ltd
United Kingdom
Address
Colworth House
MK44 1LQ Sharnbrook

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Università Ambientale
Italy
Address
Campo Della Lana 601
30125 Venezia

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