作　　者： ; ; ; ; ; (高加龙）;

机构地区： 广东海洋大学食品科技学院

出　　处： 《农业工程学报》 2013年第A01期301-308,共8页

摘　　要： 为了探讨高密度CO2(DPCD)应用于加工皱纹盘鲍的可行性,在压力5～25MPa、温度30～50℃、处理时间10～50min下分别处理皱纹盘鲍,研究DPCD对其色泽、pH值、保水性、质量损失、质构等指标的影响规律。结果表明:与未处理的相比,DPCD处理对皱纹盘鲍的外观和pH值无显著影响(P>0.05),但对其色泽、基本营养成分、质量损失、保水性和质构有显著影响(P<0.05),并且随着处理强度的增加,其影响程度也加强;结合杀菌效果,DPCD处理皱纹盘鲍的适宜条件为:20MPa、45℃、(40～50)min。研究结果将为DPCD加工技术在贝类肌肉食品中的应用提供参考。 Dense phase carbon dioxide （DPCD） is a non-thermal processing technology, which affects microorganisms and enzymes through molecular effects of CO2 under pressures below 50 MPa and 60℃. DPCD has less significance effect on the quality of foods. DPCD has been applied to the process of meats, vegetables, seeds and food powders, fruits, spices and herbs, and fish. The studied objective is to investigate the effects of DPCD on bacteria inactivation and qualities of Haliotis discus hannai and to explore whether it can be applied to process Haliotis discus hannai. In this paper, the effects of pressure （5-25 MPa）, exposure time （10-50 min） and temperature （30-50℃） of DPCD treatment on bacteria inactivation and qualities of Haliotis discus hannai were studied. DPCD can reach the ideal sterilizing effect for Haliotis discus hannai under the conditions of pressure 20MPa, temperature 45℃, exposure time 40-50 min. Compared with Haliotis discus hannai cooked in boiling water for 2 min （logarithmic decline of 3.59）, the sterilizing effect was the equivalent by DPCD of 20 MPa and 45℃ for 40-50 min （logarithmic decline of 3.46）. The total number of colonies was less than 1000 cfu/mL. Compared with untreated Haliotis discus hannai, DPCD treatment had no significant effect on muscle pH value and appearance of Haliotis discus hannai （P〈0.05）, the reason was that the solubility of CO2 was lower in solid foods. However, DPCD treatment had the significant effects on color, proximate composition, weight loss, water holding capacity and texture （P〈0.05） and the effects were more obvious with DPCD treatment parameters increasing, which could be related to protein denaturation. Combined with the bactericidal effect, optimum conditions of Haliotis discus hannai treated by DPCD are： 20 MPa, 45℃, （40-50） min. The results provided the reference for processing shellfish foods by DPCD.

关 键 词： 质构 值 保水性 色泽 皱纹盘鲍

领　　域： [轻工技术与工程] [轻工技术与工程]