نتایج جستجو برای: kjeldahl method
تعداد نتایج: 1630451 فیلتر نتایج به سال:
Abstract Tropical almond nut ( Terminalia catappa Linn ) seeds have potential to be developed into yogurt because has a high nutritional content. In addition, honey used as substitute for sugar in process of making yogurt. This research aims determine effect variations concentration seed on the protein content achieve food security. Variation addition this is 6% (w/v), 8% and 10% (w/v). Analysi...
When poultry manure is collected but cannot be analyzed immediately, a method for storing the manure is needed to ensure accurate subsequent analyses. This study has 3 objectives: (1) to investigate effects of 4 poultry manure sample preservation methods (refrigeration, freezing, acidification, and freeze-drying) on the compositional characteristics of poultry manure; (2) to determine compositi...
Triacontanol (TRIA) increased fresh and dry weight and total reducible nitrogen (total N) of rice (Oryza sativa L.) seedlings within 40 minutes. Increases in total N in the supernatants from homogenates of corn (Zea mays L.) and rice leaves treated with TRIA for one minute before grinding occurred within 30 and 80 minutes, respectively. The source for the increase was investigated utilizing atm...
Vegetated drainages are an effective method for removal of pollutants associated with agricultural runoff. Leersia oryzoides, a plant common to agricultural ditches, may be particularly effective in remediation; however, research characterizing responses of L. oryzoides to flooding are limited. Soil reduction resulting from flooding can change availability of nutrients to plants via changes in ...
Background Major amino acids in pig diets are Lys, Met, Thr, and Trp, but little is known about the requirements for the other essential amino acids, especially on odorous compounds and microbial characteristics in feces of growing-finishing pigs. To this end, different levels of amino acid composition added to diets to investigate the effects of amino acid composition on microbial characterist...
the aim of this study was to determine physicochemical, microbial properties and antioxidant activityof fermented camel milk (chal) and introduce it as a functional food. the protein content of thesamples was determined using kjeldahl method and total dry matter using oven drying method. theamount of fat content with gerber method and ph was measured using a ph meter. antioxidantactivity was al...
Because of the importance of quantitative determination of protein in the research laboratory as well as in the food and feed industries (I), search for the ideal method continues unabated after many years. Methods available include nitrogen determination (Kjeldahl (2) and Dumas (3)), hydrolysis of the protein, derivatization of the amino acids with phthalaldehyde and fluorescence determination...
Nitrogen constitutes 78.09% by volume of dry unpolluted air, but it is a minor element with respect to its abundance in the earthj:"crust. Atmospheric nitrogen forms an important raw material for the economical synthesis of bulk chemicals of industrial importance, viz. ammonia, urea, nitrate, nitrite etc. Therefore, estimation of ammonia and its derivatives assumes a great importance for chemic...
85 Summary In this brief review a manual micro-Kjeldahl digestion procedure is outlined, which is satisfactory for most substances of biological origin. The final step of ammonia determination may be achieved by steam distillation and titration, if only one or two samples are to be processed. If up to say thirty or forty analyses/d are to be analysed then the semi-automated procedure has consid...
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