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a 5-μm particle size (Merck, Darmstadt, Germany). The mobile phase was 2% KH 2 PO 4 adjusted to pH 2.3 with H 3 PO 4 . Results were expressed as mg AA/100 mL of juice. Flavanone glycosides. HES, NAT, and DID (mg/100 mL) were determined by

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inheritance of flower color was attributed to the combined effect of anthocyanin pigmentation and pH, the latter being controlled by two independent codominant genes, Ph1 and Ph2 ( Griesbach, 1996 ). In morning glory, flower color varied from reddish

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-18e resin). Elution was performed in a stepwise gradient with a water (pH 2.6 adjusted with H 3 PO 4 )/acetonitrile (ACN) volumetric ratio of 0 min, 7% ACN; 0 to 20 min, 20% ACN; 20 to 28 min, 23% ACN; 28 to 40 min, 27%, ACN; 40 to 45 min, 29%, ACN

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of ethanol 70% and 30 mL of HCl 0.1%, pH 2.0) for 2 min in a blender, then placed in a beaker covered with parafilm and aluminum foil, and extracted in darkness for 12 h at 4 °C. Afterward, a filtration was made, transferring the content to a 250-mL

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chelate-associated Fe solubility is 1) a function of substrate pH; 2) chelating agent stability constants with other cations like Ca, Cu, Mn, and Zn; and 3) relative abundance of these cations ( Boxma, 1981 ; de Kreij, 1998 ; Lindsay and Norvell, 1969

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acidity, combined acidity, and the pH of brine samples were periodically measured in a titroprocessor (Metrohm 670; Herisau, Switzerland). Analyses of free and combined acidity were made by titrating up to pH 8.3 with 0.2 N OHNa, and down to pH 2.6 with 2

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present experiment, infusion or postpeeling treatment with 1% citric acid solution (pH = 2.30) reduced surface pH from 5.0 to 5.5 to ≈3.0 to 3.5, which would explain growth suppression of fast-growing spoilage bacteria ( Pao and Petracek, 1997 ). The

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.00125pHT – 0.01857pH 2 – 0.000032T 2 ( F = 90.4048**)]. Three-dimensional response surface plot showing the effect that when pH = 5.4461, T = 8.916 h, the solubility reached a maximum value of 0.0564 ± 0.0032 mg. At the same time, the pH value of

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samples were collected 39, 74, 94, and 138 DAPF in 2014; and 30, 63, 93, and 122 DAPF in 2015. Soil P was extracted by Mehlich-3 [solution pH, 2.5; soil:solution ratio, 1:10 ( Mehlich, 1984 )], AB-DTPA [solution pH, 7.6; soil:solution ratio, 1

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evaporator and the aqueous phase was adjusted to pH 2.8 with 1% hydrochloric acid (Merck) and extracted three times with ethyl acetate (Merck). It was evaporated to dryness, dissolved in 1 mL of HPLC methanol, and used for of ABA and GA 3 quantification at

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