Beetroot （Beta vulgaris L.） was pulped to get the juice. The juice was given heat treatment. Yoghurt was formulated and flavored with prepared beetroot （Beta vulgaris L.） juice at different concentration levels （...Beetroot （Beta vulgaris L.） was pulped to get the juice. The juice was given heat treatment. Yoghurt was formulated and flavored with prepared beetroot （Beta vulgaris L.） juice at different concentration levels （0, 10, 20, 30, 40 and 50 mL）. The most preferred flavored yoghurt samples were obtained by sensory scores （color, flavor, mouth feel, aftertaste and overall acceptability）. The most preferred sample was then subjected to proximate, physico-chemical, microbiological and micro-nutrient analysis. The result obtained showed that the pH value ranged between 6.5 and 7.8. Thus, this showed that the product was quite good. However, ash and moisture content increased with addition of the beetroot juice, while micro-nutrient, （Mg, Na, K, Ca and Vitamin C） increased with the addition of the juice. There was no significant difference （P 〉 0.05） in the overall acceptability of all products. There was no coliform and mould growth in all the samples. The best concentration level in the samples was 90 mL of yoghurt and 10 mL of beetroot juice. Therefore, the beetroot flavored yoghurt could be said to be nutritious, safe and an acceptable product by the panelists.展开更多
The present study focused on the evaluation of the contamination by three heavy metals （Cd, Cu and Zn） of a bony fish, Mullus surmuletus L., 1758, caught in the Bay of Oran. This reflects the quality of fish habitat...The present study focused on the evaluation of the contamination by three heavy metals （Cd, Cu and Zn） of a bony fish, Mullus surmuletus L., 1758, caught in the Bay of Oran. This reflects the quality of fish habitat as species common Algerian coastal waters and enjoyed by a large fish-eating population. Monthly sampling was spread over a period of six months （December 2011-May 2012）. Given their physiological importance in the body, muscle, liver and gonads were targeted. Metal concentrations were determined by atomic absorption spectrophotometry in flame depends on three parameters （sex, size and month）. It appears from this study that the target organs of rouget （M. surmuletus） accumulate three metal pollutants sought. The highest values are those of zinc, copper and cadmium are at concentrations at least important. The results, statistically treated, showed no significant difference between the concentrations of trace metals both sexes and at all three organs considered. The average dose of heavy metals found in the mullet compared to those provided by the literature relating to DMA （Maximum Allowable Doses）, are not worrisome. Concentration levels of toxic metals reflect a certain metal pollution in the Bay of Oran.展开更多
文摘Beetroot （Beta vulgaris L.） was pulped to get the juice. The juice was given heat treatment. Yoghurt was formulated and flavored with prepared beetroot （Beta vulgaris L.） juice at different concentration levels （0, 10, 20, 30, 40 and 50 mL）. The most preferred flavored yoghurt samples were obtained by sensory scores （color, flavor, mouth feel, aftertaste and overall acceptability）. The most preferred sample was then subjected to proximate, physico-chemical, microbiological and micro-nutrient analysis. The result obtained showed that the pH value ranged between 6.5 and 7.8. Thus, this showed that the product was quite good. However, ash and moisture content increased with addition of the beetroot juice, while micro-nutrient, （Mg, Na, K, Ca and Vitamin C） increased with the addition of the juice. There was no significant difference （P 〉 0.05） in the overall acceptability of all products. There was no coliform and mould growth in all the samples. The best concentration level in the samples was 90 mL of yoghurt and 10 mL of beetroot juice. Therefore, the beetroot flavored yoghurt could be said to be nutritious, safe and an acceptable product by the panelists.
文摘The present study focused on the evaluation of the contamination by three heavy metals （Cd, Cu and Zn） of a bony fish, Mullus surmuletus L., 1758, caught in the Bay of Oran. This reflects the quality of fish habitat as species common Algerian coastal waters and enjoyed by a large fish-eating population. Monthly sampling was spread over a period of six months （December 2011-May 2012）. Given their physiological importance in the body, muscle, liver and gonads were targeted. Metal concentrations were determined by atomic absorption spectrophotometry in flame depends on three parameters （sex, size and month）. It appears from this study that the target organs of rouget （M. surmuletus） accumulate three metal pollutants sought. The highest values are those of zinc, copper and cadmium are at concentrations at least important. The results, statistically treated, showed no significant difference between the concentrations of trace metals both sexes and at all three organs considered. The average dose of heavy metals found in the mullet compared to those provided by the literature relating to DMA （Maximum Allowable Doses）, are not worrisome. Concentration levels of toxic metals reflect a certain metal pollution in the Bay of Oran.
