Corn silage fermentation

Corn stalk silage is the use of lactic acid bacteria present in the green feed to ferment the feed under anaerobic conditions, so that part of the sugar source in the feed is converted to lactic acid, and the pH of the silage is reduced to below 4.2 to inhibit Others. Aerobic microorganisms such as molds, spoilage bacteria and other reproductive growth, so as to achieve the purpose of long-term storage of green feed.

The mechanism of silage fermentation is a complex microbial activity and biochemical change process. Its duration is about three weeks or so and can be roughly divided into five price segments: The first price segment is the phase of creating an anaerobic environment. When the silage material is put into the pit, the plant cells continue to breathe. Some people call this period the plant's respiration period. The plant respiration period of high-quality silage is about 3 days. As a result, carbon dioxide and heat are generated, gradually making the silage material gradually. Transformation into an anaerobic environment, coupled with heat production, provides conditions for the propagation of lactic acid bacteria. If the air in the silage gap is not compacted, not only does it prolong the respiration period of the plant, but it also causes loss of nutrients.

The second stage is mainly to produce the acetic acid stage. Increasing the acid concentration creates conditions for the lactic acid bacteria to begin to multiply.

The third stage is that lactic acid begins to produce a price segment. It is also a stage where acetic acid bacteria cannot live in higher acids and is restricted. The above three price segments take about 5 days, and the three are interspersed with each other without certain boundaries.

The fourth price segment is the price segment of lactic acid bacteria proliferation and lactic acid formation. Under normal conditions, the temperature in the pit lowered from 330C to 250C, and the pH decreased from 6 to 3.4-4.0. This price segment lasts 15-20 days. Since the lactic acid produced has reached the highest level, the lactic acid bacteria itself is also suppressed.

The fifth stage is transferred to a stable period after one month. The situation depends on the first four price bands. First, if enough lactic acid and acetic acid are produced, the effect of other bacteria can be prevented. Otherwise, if the amount of lactic acid is small, harmful bacteria will proliferate; butyric acid bacteria will produce butyric acid, and then act on silage raw materials to cause decomposition, so that protein, amino acids are decomposed into ammonia and amines, silage odor, affect palatability. Second, if the tightness of the silo is suppressed and the air is discharged cleanly, the cap is tightly leak-proof (for the first few days, the maximum sinks, and after the cap sinks, the soil should be sealed in time), and the silage can be stored for more than 10 years. Otherwise, once the air enters, it will oxidize heat and cause losses; at the same time, in the presence of air, the mold will multiply, and the lactic acid produced in the fourth stage will be used, so that the acidity will decrease and the bacteria will multiply, making the silage material. Moldy odor and suffer loss. To ensure the quality of silage, such as green corn and other green feed silage, at least 30 days or more, common feed silage more than 40 days, legumes should be silage for more than 90 days before they can access.

TYVEK Tray

TYVEK Tray,tyvek lid for tray,tyvek tray cover,tyvek tray extra thick

taicang hexiang packaging material co.,ltd , https://www.medpackhexiang.com