pepsin a 中文意思是什麼
pepsin a
解釋
胃蛋白酶a-
Now, studies on immunogenicity of hp vaccine mainly focus on oral administration with liquid or microparticles. whereas the vaccine solution administrated orally would be digested and decomposed by the low ph and pepsin. though microparticle is a popular form, it has a series of significant problems such as low encapsulation rate and possibility of antigen denaturation as a consequence of expose to organic solvents and high temperature
目前，國內外對幽門螺桿菌疫苗的研究僅局限在口服免疫，劑型以溶液或微球為主，眾所周知，液體疫苗口服后易受到胃內低ph及胃蛋白酶的破壞;微球雖然是疫苗載體研究的熱點，但在制備過程中應用的有機溶劑及高溫操作會破壞疫苗的完整性，降低免疫效果 -
In young chickens aev induces paralysis, ataxia and muscular dystrophy, while in older chickens, infection is usually subclinical, resulting in a decline in egg production and hatchability. infectivity was shown to remain unaffected by chloroform, low ph, pepsin, trypsin and deoxyribonuclease. magnesium cations were shown to stabilise preparations of the virus against heat inactivation. the buoyant density of virions are 1. 31g / ml. the diameter of the virion was estimated to be 22 to 30nm. the aev can be adapted to grow in chicken embryo. the inability of aev to grow effeciently in most cell cultures
幼雞感染該病毒后，引起麻痹、頭頸震顫甚至共濟失調，而成雞常呈亞臨床感染或導致產蛋量和孵化率下降。病毒的感染性不受氯仿、低ph 、胃蛋白酶、胰酶和脫氧核糖核酸酶的影響，鎂離子可增強病毒對熱的穩定性，病毒的浮密度為1 . 31g ml ，直徑為22 - 30nm ，該病毒主要在雞胚中增殖，在大多數細胞培養物中不生長。 -
Escherichia coli phytase appa is an alternative enzyme with performance advantages over the conventional a. niger enzyme. the appa phytase displays several favorable characteristics : an acidic ph optimum close to the physiological ph range of the stomach of pigs and chickens, higher affinity to sodium phytate, greater resistance to pepsin than the commercially available a. niger phya, and higher catalytic efficiency for phytate than that of all other known phytases
大腸桿菌來源的appa植酸酶是一種新型的植酸酶，與常規的黑麴黴植酸酶相比具有許多優點，如與豬、雞等畜禽胃的ph環境更加適應，與底物植酸更強的親合性以及對消化道蛋白酶更強的抵抗性。
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