2014
DOI: 10.1016/j.jfoodeng.2013.09.011
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Ascorbic acid degradation and color changes in acerola pulp during ohmic heating: Effect of electric field frequency

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Cited by 102 publications
(50 citation statements)
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“…In addition, (Somavat, Mohamed, & Sastry, 2013) showed that degradation was faster for Bacillus coagulans in case of ohmic treatment (lower D-values). Electrical fields did not affect vitamin C degradation in acerola juices or orange juices (Mercali, Schwartz, Marczak, Tessaro, & Sastry, 2014;Vikram, Ramesh, & Prapulla, 2005). However, at high voltage, (Sarkis, Jaeschke, Tessaro, & Marczak, 2013) showed that the level of anthocyanins degradation was greater during ohmic-heating of blueberry pulp in comparison to conventional heating.…”
Section: Accepted M Manuscriptmentioning
confidence: 84%
“…In addition, (Somavat, Mohamed, & Sastry, 2013) showed that degradation was faster for Bacillus coagulans in case of ohmic treatment (lower D-values). Electrical fields did not affect vitamin C degradation in acerola juices or orange juices (Mercali, Schwartz, Marczak, Tessaro, & Sastry, 2014;Vikram, Ramesh, & Prapulla, 2005). However, at high voltage, (Sarkis, Jaeschke, Tessaro, & Marczak, 2013) showed that the level of anthocyanins degradation was greater during ohmic-heating of blueberry pulp in comparison to conventional heating.…”
Section: Accepted M Manuscriptmentioning
confidence: 84%
“…Teixeira et al (2006) comprovaram que a retenção de vitamina C em goiabada era maior em temperatura de refrigeração (5°C) do que em temperatura ambiente (30°C). No entanto, diversos trabalhos vêm verifi cando que o efeito do binômio 'tempo temperatura' sobre a degradação de ácido ascórbico pode ser menor do que o esperado, como observado por Mercali et al (2012Mercali et al ( , 2014 Embora ainda seja o método ofi cial (AOAC) para amostras de sucos de frutas, o método titulométrico do DCFI vem sendo considerado ultrapassado quando comparado às metodologias instrumentais envolvendo cromatografi a líquida de alta efi ciência (CLAE). No entanto, segundo Aldrigue (1998), que comparou a determinação de ácido ascórbico em frutas e seus principais produtos por CLAE e pelo Método de Tillmans, não houve diferença significativa entre os resultados obtidos pelos dois métodos.…”
Section: Efeito Da Temperatura De Armazenamento Na Estabilidade Do áCunclassified
“…According to Mercali et al, 12 the pulp showed kinetic rate constants ranging from 1.1 to 1.6 × 10 −3 min −1 and D values ranging between 1480 and 2145 min. For the serum, the rate constants were between 1.1 and 1.5 × 10 −3 min −1 and D values ranged from 1524 to 1951 min.…”
Section: Resultsmentioning
confidence: 96%
“…Figure 4 shows the results reported for acerola pulp. 12 The degradation percentage of ascorbic acid in acerola pulp after 120 min of heating varied between 12 and 17%. For the serum, the degradation percentage was in the range of 13 and 18%.…”
Section: Resultsmentioning
confidence: 99%