摘要
探讨降低脂肪含量对羊肉发酵香肠理化及微生物特性的影响。选取3个梯度的脂肪添加量(10%、20%、30%)以相同工艺加工羊肉发酵香肠,对其品质特性进行测定。加工结束后,各组乳酸菌数均达到107 CFU/g。各组Aw(水分活度)在加工过程中存在显著差异(p<0.05),且20%组Aw值下降最快。脂肪含量的不同对pH值无显著影响(p>0.05)。在加工结束后,20%组的硬度值显著低于10%组(p<0.05)。随加工时间的延长,硫代巴比妥酸值(TBRSA)显著增加(p<0.05);加工结束后,组间存在显著差异(p<0.05)。综合以上各项指标,降低脂肪的添加量至20%对羊肉发酵香肠的品质无不良影响,可以为低脂发酵香肠的开发提供一定的试验依据。
The effect of the fat reduction on the physicochemical and microbiological characteristics was discussed of fermented sausages. Three gradient of fat content(10 %,20 %,30 %) was selected and the quality characteristics was tested of fermented sausage. The results showed that number of lactic acid bacteria both reached 107 CFU/g at the end of process. There were significant differences in the processing of water activity in each group(p<0.05). The water activity of 20 percent group was significantly lower than the other two groups during process. Difference of fat content was no significant for pH value(p>0.05). The hardness of 20 percnt group was significantly lower thah 10 percent group after processing. TBARS was significantly increased during process(p<0.05).There was a significant difference between groups after processing(p<0.05). Comprehensive the above features,fat content of 20 percent could maintain the fermentation characteristics of mutton sausage well,a theoretical basis was provided for the development of low-fat fermented sausage.
引文
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