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- W2046516401 abstract "Anthocyanins extracted from picao, quaresmeira, petunia, flamboyant, purple ipe, lobeira, pata de vaca, jaboticaba, purple cabbage and jambul were evaluated as natural acid-base indicators. Anthocyanins in extracts were identified using HPLC/MS. Clear, rapid change in color at final-point titration was observed for extracts but only picao showed strong change in pH. Indirect determination of carbonate in limestone using a natural indicator was performed and results compared with phenolphthalein indicator and potentiometer titration. Optimal results were obtained with picao but other extracts showed good accuracy and precision." @default.
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- W2046516401 date "2012-01-01" @default.
- W2046516401 modified "2023-09-23" @default.
- W2046516401 title "Antocianinas em extratos vegetais: aplicação em titulação ácido-base e identificação via cromatografia líquida/espectrometria de massas" @default.
- W2046516401 cites W1518549821 @default.
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- W2046516401 doi "https://doi.org/10.1590/s0100-40422012000800030" @default.
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