Moon cake The 3 primary forms of metamorphic failure to Kazakhstan and mildew, if creating use of good quality preservative and correct the oxygen wrapping method, can inhibit the deterioration phenomena of moon cake.
Lead to failure regarding the primary reasons for moon cake and Kazakhstan within the following areas:
(1) Temperature: fat auto-oxidation rate increased with the heat rising. Near room temperature, the heat of each rise 10 , fat oxidation rate increases about 2.5 to 4 times, it should also accelerate the decomposition of peroxides.
(2) light and radiation exposure: light shall velocity up the response to oxidative rancidity of fat, while the more stable amino acids, shall also promote its oxidation.
(3) Water: H2o on the auto-oxidation of fat is not directly related, but indirectly. When the moon cake within the moisture content is high or special dry, shall hold a faster acidification rate.
(4) oxygen partial pressure: the rate of fat auto-oxidation with atmospheric oxygen partial compression increases.
(5) exposure area: In fact, the oil-bearing moon cake with the space in contact with the surface region and packing cake relationship is more important than the oxygen partial pressure, large surface region of moon cake faster the oxidation. To prevent the oxidation of oil-bearing moon cake degeneration phenomenon, more effective approach is to improve the moon cake wrapping technology. Nitrogen creating use of vacuum wrapping or packaging, or wrapping oxygen absorber used to remove free oxygen, can reduce or prevent the oxidation of fat, all of which require wrapping packaging measures can absolutely prevent gas leakage. Within the above measures on, he placed the greatest ideal method deoxidizer, because, whether vacuum or nitrogen packing, moon cake wrapping bag are little residual oxygen. Wrapping methods used to remove oxygen, in addition to preventing the effect of oxidation of moon cake ingredients, similar time, oxygen can inhibit the microbial growth and good reproduction.
Lead to primary moon cake mold: (1) Biological Pollution: moon cake during processing, due to unsafe operation and management, to make moon cake is the environment, equipment, utensils contaminated by micro-organisms attached.
(2) temperature: the growth of many micro-organisms suitable heat for 20 , 25 , the temperature, the microbial growth rate to increase in geometric shape reproduction. The heat of 42 , 65 , the microbial growth was inhibited, so the moon cake moon cake manufacturers usually take heat sealing packaging.
(3) Relative humidity: absorption of nutrients and microbes to outside world outside metabolite excretion, are subject to h2o like a medium. Microorganisms from the water, it can not be life activities.
(4) Nutrition: Nutrition moon cake is more complete, rich in protein for microbial growth, provides a good breeding material.
(5) Oxygen: moon cake production, wrapping process, within and around its frequent presence of oxygen. Within the moon cake wrapping bag if there is oxygen, it shall promote the growth of aerobic microorganisms. Is a shape of aerobic bacteria on the fungus.
Oxygen absorber should be extended shelf life of moon cake. Deoxidant primary mechanism is the moon cake wrapping sucked the oxygen bag (including the outside world to continuously penetrate into the moon cake wrapping bag of oxygen), the wrapping bag regarding the oxygen concentration was controlled below 0.1%, to moon cake in a anaerobic environment, thereby inhibiting oxidation and moon cake mold phenomena. However, if the moon cake quality raw fabric itself, for example moon cake within the microbial content of raw fabrics higher, or use the peroxide value of oil is too high, the use of any moon cake late preservatives, for the sanitary quality regarding the moon cake, are useless of. Whether you need to raise the position of preservation of moon cake, moon cake's shelf life extension, you should sum a preservative to leave outside the path, that is to be the quality of raw fabrics from the moon cake guard to manage the entire production process, supporting the use of oxygen added preservatives and other internal and external preservative to improve the hygienic quality of moon cake, and shelf life.
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