49results about How to "Achieve commercial production" patented technology

A SiC single crystal is produced by the solution growth method in which a seed crystal attached to a seed shaft is immersed in a solution of SiC dissolved in a melt of Si or a Si alloy and a SiC single crystal is allowed to grow on the seed crystal by gradually cooling the solution or by providing a temperature gradient therein. To this method, accelerated rotation of a crucible is applied by repeatedly accelerating to a prescribed rotational speed and holding at that speed and decelerating to a lower rotational speed or a 0 rotational speed. The rotational direction of the crucible may be reversed each acceleration. The seed shaft may also be rotated synchronously with the rotation of the crucible in the same or opposite rotational as the crucible. A large, good quality single crystal having no inclusions are produced with a high crystal growth rate.

The invention relates to a method for producing mycophenolic acid by efficiently accumulating Penicillium brevicompactum and supplementing a precursor in the later period, which comprises the following steps: culturing Penicillium brevicompactum on a PDA (potato dextrose agar) slope medium for 10 days, eluting with 30% glycerol to obtain a spore suspension, inoculating 2 wt% of spore suspension to the seed culture medium, carrying out activation culture at the controlled temperature of 28 DEG C for 72 hours, inoculating the activated Penicillium brevicompactum in a fermentation tank, carryingout fermentation and culture by using the optimized glucose-glycine liquid culture medium at the controlled temperature of 28 DEG C, and supplementing methionine in the later fermentation period, thereby obtaining the mycophenolic acid. Compared with the prior art, the invention has the following advantages: the fermentation period is less than 192 hours, and the maximum yield is up to 5.0g / L, which is about 30% higher than batch fermentation. The fermentation strategy of supplementing the precursor to the optimized carbon nitrogen source can be controlled easily, has the characteristics of short fermentation period and high yield, and has wide industrialization application prospects.

The invention belongs to the technical field of protein engineering, and particularly relates to a method for extracting albumen powder from corn germ meal. The method comprises the following steps: firstly, crushing the corn germ meal, then adding water into the crushed corn germ meal, uniformly stirring the water and the corn germ meal till the turbid liquid is formed, and performing pasteurization at 85 DEG C; secondly, naturally cooling the turbid liquid, adjusting the pH value of the turbid liquid to 8.0 to 8.5 through a 0.1mol / l NaOH solution when the temperature of the turbid liquid is stabilized at 40 DEG C; thirdly, adding compound protease to perform enzymolysis to obtain the enzymatic hydrolysate; fourthly, adding Alacalase-2.4 liquid and papain into the enzymatic hydrolysate obtained in the third step to perform enzymolysis continuously, performing enzyme deactivation and centrifugal separation, taking the liquid supernatant, heating the liquid supernatant to evaporate moisture, and obtaining the albumen powder product after drying. Through the adoption of the method for extracting albumen powder from corn germ meal, both corn germ protein which is denatured at high temperature and corn germ protein which is not denatured can be used for extracting albumen powder. The method is wide in application scope, and various corn germ materials can be adopted.

The invention relates to preservation and refrigeration equipment, in particular to a low-temperature transportation device for long-term preservation and transportation, specifically a continuous air suction type depressurized refrigerator truck, which comprises a truck body and a storehouse body. A shockproof device is installed at a junction between the truck body and the storehouse body. The storehouse body comprises a storeroom for storing products and an equipment installation room for installing equipment. An automatic information control system is installed in the equipment installation room. A gas pretreatment chamber is arranged in the equipment installation room and is communicated with the storeroom. The equipment installation room additionally comprises a humidifying system, an ozone sterilization system, refrigeration systems and depressurization systems. Two sets of refrigeration systems and the depressurization systems are arranged, wherein one set of refrigeration system and depressurization system is communicated with the gas pretreatment chamber and is matched with the gas pretreatment chamber in use; and the other set of refrigeration system and depressurization system is communicated with the storeroom and is matched with the storeroom in use. The continuous air suction type depressurized refrigerator truck has the advantages the growth of aerobic bacteria can be effectively inhibited by creating an environment with extremely-low-content oxygen, the function of ozone sterilization is obtained, and the reproduction of the bacteria and the rot of fruits and vegetables are effectively inhibited.