Objectives: The general purpose of this study is to detection and determination of the concentration level of dichlorodiphenyltrichloroethane (DDT) in some commercially available marine dry fishes and to investigate t...Objectives: The general purpose of this study is to detection and determination of the concentration level of dichlorodiphenyltrichloroethane (DDT) in some commercially available marine dry fishes and to investigate the contamination status of dichlorodiphenyltrichloroethane (DDT) of these dry fishes. Methods: Samples were collected from six largest dry fish markets (three from Chittagong district and three from Cox’s Bazar district) and four types of dry fishes were taken in this study are Ribbon fish (Lepturacanthus savala), Sin Croaker (Johnius dussumieri), Bombay duck (Harpodon nehereus) and Shrimp (mixed species). Total numbers of samples were 24 that were analyzed in the laboratory. Results: The results of the study show that the mean concentrations of dichlorodiphenyltrichloroethane (DDT) in the samples of Ribbon fish, Bombay duck and Sin croaker were ranged between 130.85 - 153.47ppb, 125.21 - 181.4ppb and 119.86 – 208.65ppb respectively. The mean concentrations of dichlorodiphenyltrichloroethane (DDT) were found at a lower amount in shrimp sp. than the other. Conclusions: This result indicates that the concentration of dichlorodiphenyltrichloroethane (DDT) in dry fish samples from Bangladesh are higher and may causes chronic disease and potential long-term risk for human health.展开更多
Dry fish is the low cost dietary protein source in Bangladesh. Sometimes dry fishes are kept for a longer period that is the key factor of the deterioration of nutritional value of dry fishes, as they absorb moisture ...Dry fish is the low cost dietary protein source in Bangladesh. Sometimes dry fishes are kept for a longer period that is the key factor of the deterioration of nutritional value of dry fishes, as they absorb moisture from the surrounding air. The general purpose of this study is to determine the proximate composition of three available marine dry fishes (Harpodon nehereus, Johnius dussumieri and Lepturacanthus savala) and to investigate the changes of nutritional value of these selected dry fishes with the increasing of storing period. The result of this study shows that the mean percentage of moisture content increased at a significant level with the increasing of storing period. For 2 years storing period the moisture content is increased by 12.77%, 11.89% and 6.69% for the three dry fishes (Harpodon nehereus, Johnius dussumieri and Lepturacanthus savala respectively). The result of this study also shows that the mean percentage of protein (6.35, 7.93 and 4.68), lipid (1.92, 0.67 and 1.13), and carbohydrate (1.70, 1.81 and 0.66) of three dry fishes (Harpodon nehereus, Johnius dussumieri and Lepturacanthus savala respectively) decreased greatly for 2 years storing period. The findings of this study showed that nutritional value of dry fishes deteriorate with the increasing of storage period.展开更多
文摘Objectives: The general purpose of this study is to detection and determination of the concentration level of dichlorodiphenyltrichloroethane (DDT) in some commercially available marine dry fishes and to investigate the contamination status of dichlorodiphenyltrichloroethane (DDT) of these dry fishes. Methods: Samples were collected from six largest dry fish markets (three from Chittagong district and three from Cox’s Bazar district) and four types of dry fishes were taken in this study are Ribbon fish (Lepturacanthus savala), Sin Croaker (Johnius dussumieri), Bombay duck (Harpodon nehereus) and Shrimp (mixed species). Total numbers of samples were 24 that were analyzed in the laboratory. Results: The results of the study show that the mean concentrations of dichlorodiphenyltrichloroethane (DDT) in the samples of Ribbon fish, Bombay duck and Sin croaker were ranged between 130.85 - 153.47ppb, 125.21 - 181.4ppb and 119.86 – 208.65ppb respectively. The mean concentrations of dichlorodiphenyltrichloroethane (DDT) were found at a lower amount in shrimp sp. than the other. Conclusions: This result indicates that the concentration of dichlorodiphenyltrichloroethane (DDT) in dry fish samples from Bangladesh are higher and may causes chronic disease and potential long-term risk for human health.
文摘Dry fish is the low cost dietary protein source in Bangladesh. Sometimes dry fishes are kept for a longer period that is the key factor of the deterioration of nutritional value of dry fishes, as they absorb moisture from the surrounding air. The general purpose of this study is to determine the proximate composition of three available marine dry fishes (Harpodon nehereus, Johnius dussumieri and Lepturacanthus savala) and to investigate the changes of nutritional value of these selected dry fishes with the increasing of storing period. The result of this study shows that the mean percentage of moisture content increased at a significant level with the increasing of storing period. For 2 years storing period the moisture content is increased by 12.77%, 11.89% and 6.69% for the three dry fishes (Harpodon nehereus, Johnius dussumieri and Lepturacanthus savala respectively). The result of this study also shows that the mean percentage of protein (6.35, 7.93 and 4.68), lipid (1.92, 0.67 and 1.13), and carbohydrate (1.70, 1.81 and 0.66) of three dry fishes (Harpodon nehereus, Johnius dussumieri and Lepturacanthus savala respectively) decreased greatly for 2 years storing period. The findings of this study showed that nutritional value of dry fishes deteriorate with the increasing of storage period.
