Nutrient composition of foods provided by school canteens in Bahrain

Abstract

PurposeThe aim of this study is to determine the nutritional profile of foods provided by the governmental school canteens in Bahrain.Design/methodology/approachNine types of foods commonly provided in 45 schools in Bahrain were analyzed for their proximate, mineral and heavy metal composition. Proximate composition was determined by measuring the moisture, ash, fat, protein (N × 6.25), crude fiber and carbohydrate content. Minerals and heavy metals were measured using flame or atomic absorption spectroscopy. Fatty acids were analyzed by gas liquid chromatography (GLC), as their methyl esters and sterols in the extracted fat were determined quantitatively by GLC.FindingsProximate analysis indicated protein content in the range of 8.14‐12.52 g/100 g, while fat content was below 10 g/100 g in all the foods, except thymes bakery (16.87 g/100 g). Consequently, thymes bakery also had higher energy values (376.15 kcal/100 g). Carbohydrates ranged between 33.86 and 47.29 g/100 g and fiber was high in the broad beans sandwich (1.16 g/100 g). Liver sandwich had considerable amount of iron (43.8 ppm), zinc (23.8 ppm) and potassium (3,360 ppm), while pizza was a good source of calcium (2,190 ppm). Lead was detected in 89 per cent of the foods, the highest being in pizza (0.234 ppm), being but contamination was well within the permitted limit. Aluminum was detected in 78 per cent of the foods, the highest level being observed in the chicken sandwich (10.8 ppm).Originality/valueThe results of this study can be utilized to improve the nutritive value of foods provided in the school feeding programme in the country.