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macro-nutrients in edible parts of food crops in the region of Moanda,Gabon

Agricultural Sciences 2012年第5期3卷 697-701页

作者： Jean Aubin Ondo Richard Menye Biyogo Magloire Ollui-Mboulou Fran?ois Eba Joseph Omva-Zue Laboratoire pluridisciplinaire des sciences de l’Ecole Normale Supérieure B.P 17009 Libreville Gabon

The assessment of nutritive foodstuffs quality is an important step in the estimation of dietary intake of metals. This study aimed to assess accumulation and the daily intake of macro-elements magnesium, calcium, potassium and sodium in edible parts of plants grown in Moanda area. The ranges of concentrations were 246 - 5645 mg/kg, 1167 - 35105 mg/kg, 158 - 12563 mg/kg and 88 - 795 mg/kg for Mg, Ca, K and Na, respectively. Mg and K levels were significantly higher in fruits than in tubers. The trend of accumulation in the edible parts of plants was generally: Ca > K > Mg > Na. The daily intakes of Mg and Ca were the highest and indicated food crops in Moanda had a good nutritive quality.

关键词： Food Crops macro-nutrients Daily Intake Moanda

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Challenges of a feasible route towards sustainability in environmental protection

引用

Frontiers of Environmental Science & Engineering 2010年第2期4卷 123-134页

作者： G.LETTINGA LeAF-foundation Sub-department of Environmental TechnologyWageningen UniversityP.O.box 81206700 EVWageningenNetherlands

Anaerobic processes for treatment of low and high strength wastewaters and solid wastes constitute the core method in the natural biological mineralization(NBM)treatment *** adequately combined with the complementary NBM-systems and modern clean water saving practices in wastewater collection and transport,they represent a feasible route to sustainable environmental protection(EPsus),in essence even towards a more sustainable *** the development and implementation of modern high rate Anaerobic Wastewater Treatment(AnWT-)systems and complementary innovative NBM-processes,the considerable progress made since the seventies in fundamental insights in microbiology,biochemistry and process technology,still numerous challenging improvements in the NBM-field can be *** contribution is mainly based on the insights attained from wide ranging literature evaluations and the results of experimental research conducted by numerous PhD students who participated in our group over the last four *** attempt is made here to identify major facets on which an improved insight can,and consequently should,be obtained in order to accomplish more optimal operation and design of various types of Anaerobic Degradation(AnDeg-)processes.

关键词： sustainability environmental protection anaerobic treatment micro-aerobic treatment natural biological mineralization concept traces elements macro-nutrients

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