共查询到20条相似文献,搜索用时 46 毫秒
2.
3.
4.
5.
6.
7.
8.
Nisin在红肠保鲜中的应用 总被引:15,自引:6,他引:15
本试验将Nisin应用于红肠中,研究其抑菌效果和对产品的感观及pH值的影响。结果表明,添加Nisin可显著降低细菌总数,并延长产品保存期。 相似文献
9.
10.
11.
12.
13.
14.
15.
主要目的是重新认识淀粉测定中的操作要点,并结合实践经验加以改进和完善,提高化验结果的准确度,更好地指导和监督生产。 相似文献
16.
低盐低硝红肠保质期的研究 总被引:1,自引:0,他引:1
研究以氯化钾替代部分食盐氯化钠,以山梨酸钾和红曲米部分代替亚硝酸钠,加工低盐低硝酸盐的红肠制品,分别从感官指标、pH值、细菌总数、脂质过氧化值等几方面对其保质期进行测定。结果表明:采用上述替代方法加工出的红肠产品的保质期能够达到24d,与没有进行替代的产品无显著差异,其中最佳替代方案为氯化钾7.2g/kg,氯化钠28.8g/kg,亚硝酸钠0.12g/kg,山梨酸钾1.60g/kg,红曲米2.0g/kg。 相似文献
17.
18.
19.
María C. García Fontán 《LWT》2007,40(9):1610-1622
Counts of total aerobic mesophilic flora on Standard Plate Count (SPC) agar, lactic acid bacteria on de Man Rogosa Sharpe (MRS) agar, salt tolerant flora on SPC agar +7.5% NaCl, and Enterobacteriaceae on Violet Red Bile Glucose (VRBG) agar, and some physico-chemical parameters (Total solids and NaCl contents and pH and aw values) were determined in 15 units of Botillo, a traditional dry-fermented sausage made in the NW of Spain.In general, high counts of all the investigated microbial groups were observed, with average values of 8.65 log Colony Forming Units (CFU)/g for the total aerobic mesophilic flora, 8.87 log CFU/g for the lactic acid bacteria, 6.56 log CFU/g for the salt tolerant flora, and 2.98 log CFU/g for the Enterobacteriaceae.After the end of the incubation period, from MRS agar, SPC agar +7.5% NaCl, and VRBG agar, 10 colonies were randomly taken from each Botillo unit and from each culture medium. A total of 150 strains per culture medium were then identified using classical methods.Among the isolates from MRS agar, Lactobacillus sakei predominated (23.3% of the isolates), followed by Lactobacillus alimentarius (17.3%), Lactobacillus curvatus (15.3%), Lactobacillus plantarum (12%) and Lactobacillus farciminis (10%). Of the 150 isolates obtained from SPC agar +7.5% NaCl, only 34 strains (22.6% of the isolates) belonged to the Staphylococcaceae or Micrococcaceae families. Among the Staphylococcaceae, Staphylococcus saprophyticus (8.6% of the isolates) was the main species, followed by Staphylococcus xylosus (4%), Staphylococcus lentus (2%) and Staphylococcus cohnii cohnii (1.3%); Staphylococcus epidermidis, Staphylococcus sciuri and Staphylococcus capitis were isolated in very low proportions. The Micrococcaceae strains isolated, belonging to the Micrococcus genus, could not be identified at species level. Of the 140 isolates obtained from VRBG agar, Hafnia alvei (32.14% of the isolates) was the main species, followed by Serratia liquefaciens (12.85%), Klebsiella oxytoca (5.71%) and Enterobacter cloacae (3.71%); only one isolate was identified as Salmonella (Salmonella arizonae) and one as Escherichia coli. 相似文献
20.
实验采用复合酶制剂处理美国红鱼,红鱼肉中的蛋白质及各种营养成分的价值都得到了提高,通过优化实验工艺条件,确定了红鱼重组香肠加工生产的最佳加工工艺条件。 相似文献