2002
DOI: 10.1590/s0100-40422002000400024
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Comparação de metodologias para a determinação de umidade em geléia real

Abstract: . Prof. Lineu Prestes, 580, bloco 14, 05508-900 São Paulo -SP Recebido em 11/6/01; aceito em 21/11/01 COMPARISON OF METHODOLOGIES FOR ROYAL JELLY'S MOISTURE DETERMINATION. The aim of this paper was to compare methods of moisture determination to choose the best one for the determination of this parameter in royal jelly samples. Royal jelly is sensitive to high temperatures becoming dark and loosing volatiles in high temperatures. The methods were: vacuum oven at 60 ºC, 70 ºC, conventional oven at 105 ºC, Karl … Show more

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Cited by 23 publications
(16 citation statements)
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“…these methods are larger and could be due to loss of volatile compounds, besides water, during heating. These events were also observed by Garcia-Amoedo and Almeida-Muradian (2002), who analyzed royal jelly samples through different drying methods. According to Cecchi (2003), in the event of evaporation in oven at 100 °C until constant weight, a moisture overestimation can occur due to loss of volatile substances or decomposition reactions.…”
Section: Resultssupporting
confidence: 65%
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“…these methods are larger and could be due to loss of volatile compounds, besides water, during heating. These events were also observed by Garcia-Amoedo and Almeida-Muradian (2002), who analyzed royal jelly samples through different drying methods. According to Cecchi (2003), in the event of evaporation in oven at 100 °C until constant weight, a moisture overestimation can occur due to loss of volatile substances or decomposition reactions.…”
Section: Resultssupporting
confidence: 65%
“…Th is method, while exposing the samples to an increase in temperature, does it for short periods only. Th is could contribute to the integrality of the samples (GARCIA-AMOEDO; ALMEIDA-MURADIAN, 2002). Serra-Bonvehi and Casanova (1987), in studying methods of bee pollen moisture analysis from Spain, obtained the following average values: 13.4% for oven at 110-105 °C (n = 31); 5.9% for vacuum oven at 65 °C (n = 31); 4.7% for the Karl Fischer's method (n = 3); 5.2% for radiation Infra-red (n = 3).…”
Section: Resultsmentioning
confidence: 99%
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“…Moisture content is among the most important attributes analysed in food (Garcia-Amoedo & Almeida-Muradian, 2002), since it is an indicator of product quality. It is related to the perishability; therefore, inadequate levels may lead to large losses in chemical stability and microbiological contamination (Drdóñez, 2005).…”
Section: Resultsmentioning
confidence: 99%
“…Infrared moisture analyzer was used for moisture content analysis according to GARCIA-AMOEDO & ALMEIDA-MURADIAN [12].…”
Section: -Methods Used For Pure Royal Jellymentioning
confidence: 99%