Comparison of some minerals and trace elements in fruit juices, soft drink, coffee, tea and mineral water
1989
Nitaya Promvanit (Mahidol Univ., Bangkok (Thailand). Inst. of Nutrition) | Ratchanee Kongkachuichai | Songsak Srianujata
Mineral water has been claimed to be a good source of mineral supply for human needs. This study was aimed to compare the levels of some minerals and trace elements in fresh and canned fruit juices, soft drink, coffee and tea, and mineral water. Samples were collected from markets in Bangkok. They were digested with nitric and sulfuric acids mixture except those mineral waters that contained no sugar or color, which were measured directly. They were then diluted with appropriated volume and measured by atomic absorption spectrophotometer. Phosphorus was analysed by colorimetric method. Fresh and canned fruit juices were better sources for most elements. Mineral water contained more calcium than other drinks. Iron was contained in comparable levels and in rather low levels for all kinds of drinks. It can be stated that either fresh or canned fruit juices supply better amount of most essential elements analysed than mineral waters that supply minerals and trace elements in moderate amount. Therefore, it is more beneficial to drink fruit juices because the prices of these refreshments are comparable but fruit juices contain also some other useful nutrients such as vitamins.
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