Optimizing The Formulation And The Comparative Different Aseptic Technic On The Duck Feet With Pickled Peppers

Duck feet with pickled peppers is a type of animal pickle and also a kind of meat products based on traditional sichuan pickles, which is fragrant and crisp, tasty appetizer, nutrient-rich, health and safety, easy to carry and has infinitely broad market prospects, hi the experiment, the subject of duck feet with pickled peppers recipe and shelf-life are determined, optimizing the formulation and extending the shelf-life of pickled duck. Firstly, select the optimal combination by determining TVB-N of pickled duck at 37 "C incubator. Secongdly, the shelf-life at room temperature for pickled duck is explored by detecting the sensory quality, microbiological and physicochemical indexetermining of pickled duck at room temperature.The main results are as follows:(1) According to the single factor test and orthogonal test, the optimum composite formula is Pickle 20.0%, salt 2.5%, Calcium chloride 0.5%, Curing time 36 hours.(2) According to the single factor test and orthogonal test combined with other factors, the optimum composite formula of the three biological preservatives is epsilon-polylysine 0.15g/kg, Nisin 0.4g/kg, natamycin 0.3g/kg.(3) Because the precipitation of sensory evaluation scores declined sharply, the pickled duck after the thermal sterilization by the single factor experiment is difficult to be accepted for consumers, so the heat sterilization is not suitable for pickled duck.(4) In the condition of adding preservatives, the optimal pressure and time was:ultra high pressure of 400MPa, time 25min, optimizating by the software Design expert 8.0.5.b.(5) In the case of no preservatives, the optimal pressure and time was:ultra high pressure of 400MPa, time 25min, optimizating by the software Design expert 8.0.5.b.(6) In the condition of adding preservatives, duck feet with pickled peppers can be stored up for three months at room temperature; In the condition of and preservatives, duck feet with pickled peppers can be stored up for six months at room temperature; In the condition of ultra high pressure but not preservatives, duck feet with pickled peppers can be stored up for four-and-a-half months.