Summary: Soluble gas stabilisation (SGS) is a recently proposed method to extend the shelf life of food. However, no studies have determined the amount of carbon dioxide absorbed in food and particularly in oysters. Thus, the aim of this study was to determine CO2 absorption and desorption rates in oysters during the solubilisation process. Cooked oysters were placed in the apparatus's chamber, CO2 was injected into the chamber, and the SGS process started at different pressures, temperatures and gas/product (g/p) ratios. CO2 absorption and desorption rates were obtained from data of CO2 concentration in the chamber headspace and calculated by mathematical models. The results showed higher absorption rates under higher pressure, higher g/p ratio and lower temperature (0 °C). The concentration of CO2 dissolved in the oysters was 21008.45 mg CO2 kg product-1. On the other hand, lower desorption rates occurred for the lowest pressure (200 kPa) and lowest gas/product ratio (1:1). For CO2 desorption from oysters, it was observed that 10 min was enough to desorb a large amount of CO2 under normal atmosphere. CO2 absorption and desorption rate in oysters by manometric method.
Evaluation of CO2 absorption and desorption rate in oysters (Cassostrea gigas) using the soluble gas stabilisation method
Lerin L. A.;
2015
Abstract
Summary: Soluble gas stabilisation (SGS) is a recently proposed method to extend the shelf life of food. However, no studies have determined the amount of carbon dioxide absorbed in food and particularly in oysters. Thus, the aim of this study was to determine CO2 absorption and desorption rates in oysters during the solubilisation process. Cooked oysters were placed in the apparatus's chamber, CO2 was injected into the chamber, and the SGS process started at different pressures, temperatures and gas/product (g/p) ratios. CO2 absorption and desorption rates were obtained from data of CO2 concentration in the chamber headspace and calculated by mathematical models. The results showed higher absorption rates under higher pressure, higher g/p ratio and lower temperature (0 °C). The concentration of CO2 dissolved in the oysters was 21008.45 mg CO2 kg product-1. On the other hand, lower desorption rates occurred for the lowest pressure (200 kPa) and lowest gas/product ratio (1:1). For CO2 desorption from oysters, it was observed that 10 min was enough to desorb a large amount of CO2 under normal atmosphere. CO2 absorption and desorption rate in oysters by manometric method.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
