According to Science and Technology Daily, January 20, 2015, about 90 million tons of protein by-products are produced in my country's agricultural product processing industry every year. Due to high degree of denaturation, low solubility, and poor nutritional quality, it cannot be fully utilized, resulting in serious waste of protein resources.

The National 863 Program "Key Technologies and Development of Biotransformation and Refining of Low-value Protein Resources" project Jiangsu University research group broke through the bottleneck problem, pioneered a number of key technologies, and created a series of multi-mode ultrasonic equipment. Among them, "Research on Key Technologies for Efficient Enzymatic Preparation of Functional Polypeptides and Creation of Ultrasonic-assisted Enzymatic Hydrolysis Equipment" won the second prize of Science and Technology Progress Award of the Ministry of Education in 2013, and won the first prize of the Science and Technology Innovation Award of the Chinese Society of Food Science and Technology in 2014.

The research group has established a new multi-mode ultrasonic-assisted extraction technology, and a new method of multi-mode ultrasonic enhancement of protease hydrolysis reaction, pioneered the protein enzyme hydrolysis membrane separation coupling reaction technology method of gradual thinning feed intelligent control, and established a new technology of ultrasonic enhanced fermentation process.

China's ultrasonic equipment is crude and backward. The project has created 12 working modes and developed 15 ultrasonic equipment, of which two modes are the first at home and abroad. China's first swept multi-frequency ultrasonic-assisted enzymatic hydrolysis test equipment, the first multi-frequency countercurrent energy gathering type and the first dual-frequency swept divergent ultrasonic-assisted enzymatic hydrolysis industrialization equipment have been developed. The first production line of functional polypeptides by ultrasonic-assisted enzymatic hydrolysis was established in China, and the large-scale production of rapeseed polypeptides was realized. The production of rapeseed polypeptide, corn polypeptide and other products are well received by the market, and wheat germ polypeptide production line is being built.

my country's vegetable oil preparation technology, oil quality and safety are unstable, environmental pollution is large, and the utilization rate of raw materials is low. The national 863 plan "Food New Enzyme Creation and Bioprocessing Key Technology Research and Innovative Application" project National Academy of Food Sciences, Northeast Agricultural University research group, With mild bioprocessing technology to achieve safe, efficient and clean food production.

The project broke through the core technology, created a new sugar enzyme preparation, realized the acquisition of new enzymes and their genes from high temperature environment, constructed genetically engineered bacteria, created a new enzyme preparation enzyme for enzymatic oil extraction, realized the construction of a composite protease catalytic technology system, established a pretreatment technology suitable for different research objects, and developed a pretreatment equipment suitable for protein-based oil dissociation.

Emulsification is common in oil biological dissociation technology. The project has determined the appropriate breaking technology, so that the free oil yield in soybean and sunflower seeds is more than 90%, and the free oil yield of special oil is more than 80%. The demulsification mechanism of the efficient demulsification method is clarified, thermophilic cellulase and glycosidase are obtained, and the speed and efficiency of oil biological dissociation are improved. Among them, "key technology and equipment innovation and application of biological dissociation and refining of vegetable oil" won the first prize of scientific and technological invention of Heilongjiang Province in 2013.

Science and Technology Daily/Ma Aiping