Meanwhile , the partial proenzyme from the abomasums would be activated automatically by the latter two methods 同时还发现盐渍风干处理和自然风干处理可使皱胃中一部分酶原自动激活。
2.
The greatest activity could be obtained on the condition of 8 % salt concentration , 1 : 20 ratio of abomasums and butter , 30w / cm2 supersonic strength and 40min extraction time 在食盐浓度8 ，皱胃与提取液比例1 ： 15时，用30w cm2超声强度提取40min ，可获得最大的凝乳活性。
3.
The methods of the abomasums treatment suggested that the freezing method had least influence on milk - clotting activity , while the salting air - drying and natural air - drying went to another extreme 皱胃处理方式研究结果表明，冷冻处理对酶活性影响最小，盐渍风干处理影响较大，自然风干处理酶活性损失最多。
4.
As the kid chymosin was extracted by the traditional way and the buffering way at different ph values , its activity mainly depended on the salt concentration , extraction time and temperature , the ratio of buffer and abomasums and extraction times 用传统方法和不同ph缓冲液方法提取羔羊凝乳酶时，食盐浓度、提取时间、提取温度、提取液与皱胃比例、提取次数对凝乳活性有重要的影响。
5.
With the increasing salt concentration , milk - clotting activity became higher and higher , then reached its peak , and then decreased gradually ; in the early extraction , the speed was quick , the milk - clotting activity was increased obviously . after it amounted to the maximum , the activity became steadily lower steadily ; the increasing temperature in extracting could improve the extraction activity , but too high temperature could result in the denaturation and inactivation ; the greater the ratio of abomasums and butter and was , the quicker speed was when the enzymes was drawn out , and after extracting for twice , most of the enzymes in the abomasums could be drawn out 随着食盐浓度增大，凝乳活性逐渐提高，当达到一定浓度后，凝乳活性又逐渐降低；在提取初期，提取速度较快，凝乳活性明显提高，当提取达到最大值后，凝乳活性又逐渐下降；随着提取温度的升高，凝乳活性逐渐增大，但温度过高时，会导致酶变性失活；随着提取液与皱胃比例的增大，酶溶出速度加快，提取次数越多，皱胃中酶提取越充分，提取2次后，皱胃中绝大部分酶被提出。
6.
The training course on livestock production diseases control is lectured mainly on biosecurity epidemic disease prevention and treatment of dairy cattle in livestock farms , fine quality dairy production , biosecurity measures for prevention of dairy udder diseases , mastitis , artificial insemination technology , abomasums displacement , caesarean section technology on the standing cows , dairy reproduction failures , etc . the training course is instructed by the combination of lectures with practices 动物疾病防治培训班讲授内容包括牧场奶牛的生物安全疫病防治优质牛奶生产预防奶牛乳房疾病的生物安全措施奶牛的乳房炎牛人工授精技术皱胃移位站立牛的剖腹产术奶牛繁殖障碍等。培训班采用讲授与实习相结合的方法。
7.
The research on the condition of kid ' s suckling indicates that the highest milk - dotting activity ( 26108su / g ) was obtained for the whole suckling section , whereas proteolytic activity were no significant different between the whole suckling and random section ( p > 0 . 05 ) , but proteolytic activity ( 1925u / g ) was highest for the complete grass - feeding , which demonstrated suckling could stimulate the continuous secretion of chymosin in the abomasum 羔羊哺乳状况研究表明，全哺乳组凝乳活性最高( 26108su g ) ，蛋白水解活性与随机哺乳组无明显差别( p 0 . 05 ) ，而全喂草料组蛋白水解活性最高( 1925u g ) ，这表明哺乳能够刺激皱胃中凝乳酶的持续分泌。
8.
This experiment is to probe the factors , such as the effect of the kid ' s suckling , the butchering age and the ay of the abomasums treatment on the chymosin activity ; the activation of the prochymosin ; the purification and separation of chymosin and the characterization of chymosin and pepsin , using cuan zhong dairy kid ' s abomasums as material , which would provide the theoretic base for the exploitation of the kid chymosin and its application to the cheese production 本实验以关中奶山羊皱胃为原料，对羔羊哺乳状况、屠宰年龄、皱胃处理方式和不同提取方法对凝乳酶活性的影响，凝乳酶原的激活，凝乳酶纯化与分离以及凝乳酶和胃蛋白酶特性进行了系统的研究，为羔羊凝乳酶开发以及在干酪生产中的应用提供理论基础。
