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the selectivity. m -NA could be obtained at a very high selectivity. Maximum yield of m -NA (97.9%) was obtained in methanol and in the presence of a low concentration of the Sn 4+ modifier. Veena [ 19 ] reported that the m -DNB gave 90% overall

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Kliewer, W. M., Howarth, L. & Omori, M. (1967): Concentrations of tartaric acid and malic acids and their salts in Vitis vinifera grapes. Am. J. Enol. Vitic. , 18 , 42-54. Concentrations of tartaric acid and malic acids and

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-CQA concentration. The residual solid powder in the vessels were diluted with 20 ml of ultrapure water and taken in an ultrasonic bath (Ultraclear 800A, Unique) for 600 s to have a homogeneous solution with a 5-CQA concentration not greater than 0

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Byrne, R., Ravnik, V. & Kosta, L. (1976): Trace element concentrations in higher fungi. Sci. Total Environment , 6 , 65–78. Kosta L

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type of support [ 5 ]. The physical structures and chemical properties of silicas vary widely in terms of surface area, pore size distribution, particle size, the type and concentration of hydroxyl groups and the acid–base properties according

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effect of gum concentration, amount of water, and temperature of treatment on starch modification based on swelling, solubility, and freeze-thaw stability of the starch for the development of pudding. Furthermore, sensory, surface characteristics, and

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concentration and temperature . J. Fd. Sci. , 47 , 765 – 767 , 773. Hermann , J. , Duan , L. & Moussa , M. ( 1978 ): Reaktionskinetische Berechnung

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.R. (2003): Effects of sub-MIC concentrations of antibiotics on growth of and toxin production by Clostridium difficile . J. med. Microbiol. , 52 , 1033–1038. Poxton I.R. Effects of sub

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163 168 Ohta, A., Motohashi, Y., Ohtsuki, M., Hirayama, M., Adachi, T. & Sakuma, K. (1998): Dietary fructooligosaccharides change the concentration of calbidin-D9k differently

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and interaction of crop management factors on the glycoalkaloids concentration of potato tubers. Potato Res. , 37 , 77–85. Baker T.P. Effect and interaction of crop management

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