2012
DOI: 10.1590/s0100-40422012000600014
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Caracterização por ressonância magnética nuclear de sucos de maçã obtidos por preparações enzimáticas

Abstract: Recebido em 4/9/11; aceito em 19/1/12; publicado na web em 30/4/12 NUCLEAR MAGNETIC RESONANCE CHARACTERIZATION OF APPLE JUICE CONTAINING ENZYME PREPARATIONS. In this work, 1 H Nuclear Magnetic Resonance ( 1 H NMR) was employed to evaluate changes in apple juice in response to the addition of Panzym ® Yieldmash and Ultrazym ® AFP-L enzymatic complexes and compare it with premium apple juice. The juice was processed at different temperatures and concentrations of enzymatic complexes. The differences in the resul… Show more

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Cited by 3 publications
(2 citation statements)
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“…Samples were placed into NMR tubes five mm in diameter and subsequently in a five mm probe. Typical acquisition parameters included frequency of observation of 200.0 MHz, acquisition time 4.0 s, spectral 3200.0 Hz window, pulse width 0.0 µs, number of accumulations (410), interval between pulses 1.0 s. The spectra were processed by MestReNova® program version 6.1.0 and the chemical shifts are expressed in ppm (Iulianelli and Tavares, 2011;Prestes et al, 2012).…”
Section: H Nmr Spectramentioning
confidence: 99%
“…Samples were placed into NMR tubes five mm in diameter and subsequently in a five mm probe. Typical acquisition parameters included frequency of observation of 200.0 MHz, acquisition time 4.0 s, spectral 3200.0 Hz window, pulse width 0.0 µs, number of accumulations (410), interval between pulses 1.0 s. The spectra were processed by MestReNova® program version 6.1.0 and the chemical shifts are expressed in ppm (Iulianelli and Tavares, 2011;Prestes et al, 2012).…”
Section: H Nmr Spectramentioning
confidence: 99%
“…The 90º pulse width was 7.5 µs, acquisition time was 7.5 s and recycle delay were 10 s long, totalizing 17.5 s. These conditions was used in other work (Prestes et al 2012). For the in vitro analysis, the sugar fraction was dissolved in D 2 O (600 µL), containing dimethyl-d6 sulfoxide (DMSO-d6) as internal standard and 2,2,3,3-D4-sodium trimethylsilylpropionate tetra deuterated (TMSP-d4) as chemical shift reference.…”
Section: Nuclear Magnetic Resonance (Nmr)mentioning
confidence: 99%