Development and utilization of waste wheat bran

2023-03-01 05:06:27

Wheat bran is a by-product of wheat processing flour, accounting for 20% to 25% of the total wheat. Wheat has a large area in China, is widely distributed, and has a high yield (the annual output has exceeded 100 million tons). The wheat bran processed each year can reach more than 20 million tons. Wheat bran has good nutritional value and is rich in iron, manganese, zinc and B vitamins. It is commonly used in brewing and feed industries. Wheat bran is used as animal feed and has certain restrictions, so it is not used in large quantities. Fermented wheat bran uses microbial activity to improve the digestion and utilization of wheat bran and expand its application in the feed industry. At present, people have realized that the level and quality of wheat bran crude protein are higher than wheat, and are rich in dietary fiber, so bran health food has become a new hot spot for wheat bran development.

1. Brewing industry

The brewing of vinegar and soy sauce in China has a long history. The traditional method is the use of soybean and (or) defatted soybean, wheat and (or) wheat bran as raw materials, made by the fermentation of microorganisms with a special color, flavor, taste, body liquid seasonings. The loose, light and large surface area of â€‹â€‹bran cortex is suitable for the growth of microorganisms and the production of enzymes. It is easy to obtain and is a common and ideal raw material for brewing vinegar or sauce. Bran is rich in hydrolyzing enzymes (equivalent to barley malt), which is commonly used in the industry as a saccharifying agent. At present, the purebred bran koji which is commonly used in China is also an excellent Aspergillus oryzae that has been expanded and cultivated using bran as a raw material, and then fermented wheat bran for brewing, saving food. It has been reported that using bran instead of corn to produce acetone and butanol can not only make the fermentation run smoothly, but also fully achieve the level of fermentation of added corn.

2. Feed and Fermented Wheat Bran

Wheat bran is a byproduct of wheat processing. It has large volume, high fiber content and good palatability. It is an excellent feed material for dairy cows, beef cattle and sheep. In the diet of pigs, nutrient concentrations can be adjusted to change the physical properties of the feed. In addition, wheat bran has high fiber content and has laxative effect. Appropriate amount of wheat bran for postpartum sows can regulate digestive tract function. However, long-term or large-scale feeding of wheat bran will cause the pig's nutritional disease. The use of 10% to 15% in dairy concentrates can increase milk production, but the use of too high a dose is more than a disadvantage, and 50% can be used in beef concentrates. In addition, although wheat bran is a better concentrate, its energy value is lower, calcium is less phosphorus, and the ratio of calcium and phosphorus is unbalanced. Therefore, it is best to use it together with energy feed, while using wheat bran as the main ingredient. The diet of the material needs to add some calcium-rich feed such as stone powder, shell powder, eggshell powder, and bone meal.

Wheat bran as a feed has the advantages of wide source, low cost, and easy processing. However, in the aquaculture industry, wheat bran has only been used as a primary raw material for feeding livestock and poultry directly into other feeds for a long time, and its nutritional value is low. Feed microbial fermentation technologies and products, such as the Kimpo Fermenter, have unparalleled advantages and enormous potential for development in solving this problem. After fermented by the golden baby starter, the crude fiber of wheat bran was degraded, the palatability and digestibility utilization were improved, and there was a certain acid odor, which could induce the intake of food and increase the feed intake.

3. Health food

Wheat bran protein content is generally 12% to 17%, containing a variety of amino acids required by the human body. Rich in minerals (mostly iron, manganese, zinc, and phosphorus), dietary fiber, and B vitamins. Dietary fiber can promote intestinal peristalsis, prevent constipation, reduce the contact time between harmful substances and the intestinal wall, and reduce the risk of disease. At the same time, it can reduce the absorption of fat in the digestion process, thereby lowering cholesterol and triglycerides in the blood and preventing hypertension and cardiovascular and cerebrovascular diseases. Xiangqing can consult: Beijing Huaxia Kangyuan Technology Co., Ltd., telephone toll-free hotline