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Residues of three pyrethroids in spiked vegetables have been analyzed by HPTLC with two mobile phases in a twin-trough chamber and in horizontal chambers. The spots were detected at λ = 203 nm and the greatest detection sensitivity for the three pyrethroids was 10 ng. Recovery after fortification at 0.5–5.0 mg kg −1 was from 70.20 to 108.5%. The relative standard deviation was 1.59–27.94%.

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The elemental concentrations of 12 elements from five species of the most consumed vegetables in Ghana cultivated in five mining and three non-mining towns have been analyzed using neutron activation analysis. About 50% of the total concentrations recorded for cadmium and arsenic for the various towns and vegetables were found to be above the World Health Organization (WHO) permissible levels. The statistical methods employed in this work also provided more understanding on the geographical distribution of the elements, vegetables and sampling towns. The principal component analysis of our data showed two major clusters consisting of gold mining towns and non-gold mining towns in relation to the elemental concentrations of vegetables cultivated in these towns.

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A high-performance thin-layer chromatographic method has been developed for determination of four carbamate residues in vegetables. The method uses two mobile phases on silica gel 60 F 254 GLP HPTLC layers, and detection at λ = 243 nm and 207 nm, the average wavelengths of maximum adsorption of pirimicarb and methomyl, and carbaryl and carbofuran, respectively. Recovery of 1.0–5.0 mg kg −1 of the four mixed carbamates from wax gourd and potatoes was 70.05–103.7%. The accuracy and precision of the method were confirmed by means of fortification experiments.

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Some vegetables of important nutritive requirements have been collected from Kuala Lumpur region capital of Malaysia. The vegetables were analyzed in order to determine activity concentration level of potassium using neutron activation analysis (NAA). The NAA results obtained showed the activity concentration of 40K varied from 379 Bq/kg (Egg-plant) to 1585 Bq/kg (Spinach Red). These results are compared to other researches and are clear that the concentrations of K are relatively high in the Malaysia in compared to rather than vegetables of Pakistan and Jamaican. However, they are seen not to pose any serious internal health burden due to ingestion given the realities of vegetables choice by individuals in the study area.

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After the nuclear accident at TEPCO’s Fukushima Dai-ichi power station in March, hydrogen explosions and reactor building explosion resulted in releases of radionuclides in the environment. Severe radioactive cesium and iodine contaminations have been observed in fallout deposition samples and soils in the East Japan. Radioactive cesium, iodine, uranium, and transuranic radionuclides were set as the monitoring targets in food safety tests. However, so far, only radioactive cesium and iodine were daily measured and reported by the Ministry of Health, Labour, and Welfare. The tedious and time consuming conventional alpha spectrometric method hampered the emergency monitoring U contamination in foods. In this work, we propose a simple and rapid analytical method for 238U and 235U/238U isotope ratio analysis in fresh vegetables. This method was applied to the emergency monitoring of radioactive contamination after the nuclear accident at TEPCO’s Fukushima Dai-ichi power station. The results showed no U contamination in fresh vegetables collected in Chiba and Ibaraki prefectures in April and May, 2011.

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185 190 Karovićova, J. & Kohajdová, Z. (2002): The use of PCA, FA, CA for the evaluation of vegetable juices processed by lactic acid fermentation. Czech J. Fd Sci. , 20 , 135

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characteristics for the quality assessment of tomatoes. Fruit, Nut, and Vegetable Production Engineering , 487–492. Dewulf, W., P. Jancsók, B. Nicolai, G. De Roeck, D. Briassoulis (1999): Determining the Firmness of a

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Acta Alimentaria
Authors: P. Havas, Sz. Kun, G. Styevkó, V. Slačanac, J. Hardi, and J. Rezessy-Szabó

. & Kobæk-Larsen , M. (2004): Health promoting compounds in vegetables and fruits: A systematic approach for identifying plant components with impact on human health. Trends Food Sci. Tech. , 15 (7–8), 384

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Amr, A. & Hadidi, N. (2001): Effect of cultivar and harvest date on nitrate (NO −3 ) and nitrite (NO −2 ) content of selected vegetables grown under open field and greenhouse conditions in

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Acta Alimentaria
Authors: B. Šimundić, G. Krešić, A. Živkovićb, and B. Medugorac

several pesticides from fruit and vegetables: A simple multiresidue analysis method. J. AOAC int. , 75 , 53-61. Column extraction of residues of several pesticides from fruit and vegetables: A simple multiresidue analysis method

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