<div align="center"><div align="left"><section class="_135editor" data-role="paragraph" style="max-inline-size: 100%; margin: 0px; padding: 0px; border: 0px none; z-index: 0; overflow-wrap: break-word !important; outline: none 0px !important;"><section data-role="outer" class="article135" label="edit by 135editor" style="font-size: medium;"><section class="_135editor" data-role="paragraph" style="max-inline-size: 100%; margin: 0px; padding: 0px; border: 0px none; z-index: 0; overflow-wrap: break-word !important; outline: none 0px !important;"><p style="margin-bottom: 0px; max-inline-size: 100%; clear: both; min-height: 1em; cursor: text; line-height: 1.75em; overflow-wrap: break-word !important; outline: none 0px !important;"><span style="font-size: 14px;">　　答 胰酶和BF-7658酶都是淀粉酶，对以淀粉为浆料的织物都可合用此两种酶进行退浆。但由于两种酶的性质不同，在使用上有一定的区别。现分述如下。</span></p><p style="margin-bottom: 0px; max-inline-size: 100%; clear: both; min-height: 1em; cursor: text; overflow-wrap: break-word !important; outline: none 0px !important;"><br></p><p style="margin-bottom: 0px; max-inline-size: 100%; clear: both; min-height: 1em; cursor: text; line-height: 1.75em; overflow-wrap: break-word !important; outline: none 0px !important;"><span style="font-size: 14px;">　　胰酶为动物胰腺的萃取物，一般从猪胰、牛胰中提制。胰酶最适宜的温度为40～55℃，在65～70℃时能被全部破坏。在pH=6.8～7.3范围内，其活度与稳定性可兼顾；在pH一4时失去活力最大；pH=11.5时活力最大，但极易被破坏。胰酶的稳定性差，配成溶液后一般应在2h 内用完。活化剂一般用1.55g／L食盐最好。</span></p><p style="margin-bottom: 0px; max-inline-size: 100%; clear: both; min-height: 1em; cursor: text; overflow-wrap: break-word !important; outline: none 0px !important;"><br></p><p style="margin-bottom: 0px; max-inline-size: 100%; clear: both; min-height: 1em; cursor: text; line-height: 1.75em; overflow-wrap: break-word !important; outline: none 0px !important;"><span style="font-size: 14px;">　　BF-7658酶属于细菌淀粉酶的一种，是枯草杆菌分泌出来的类似蛋白质的有机体。一般在40～80℃活性较高，最适宜温度为65℃。在pH=5时退浆率可达80％，pH值为6～7时，最高退浆率为85％。在强酸、强碱中BF--7658酶被破坏。Fe3+、Cu2+、Zn2+、Hg+等重金属离子能使酶钝化，抑制酶的活化力，因此退浆槽不可用金属器皿。同时要使用食盐或CaCl2可提高酶的活化力，使酶在高温时更稳定。BF-7658酶遇肥皂、拉开粉时活力被抑制，自来水中若含游离氯过多对酶也不利，使用时应避免与各种有害物接触。至于酶的用量应根据退浆工艺（保温堆置法、高温汽蒸法、热浴法等）及坯布含浆量、淀粉酶的转化率来决定。具体退浆工艺如表2-1所示。</span></p><p style="margin-bottom: 0px; max-inline-size: 100%; clear: both; min-height: 1em; cursor: text; overflow-wrap: break-word !important; outline: none 0px !important;"><br></p><p style="margin-bottom: 0px; max-inline-size: 100%; clear: both; min-height: 1em; cursor: text; line-height: 1.75em; overflow-wrap: break-word !important; outline: none 0px !important;"><img alt="" src="http://dayaotex-img.gz.bcebos.com/article/fffspic/rzscyn1.png" draggable="false" data-ratio="0.46678321678321677" data-w="572" style="margin: 0px; padding: 0px; cursor: pointer; text-align: center; caret-color: rgb(255, 0, 0); width: 767px; max-inline-size: 100%; max-width: 100%; overflow-wrap: break-word !important; outline: none 0px !important; height: auto !important;"></p><p style="margin-bottom: 0px; max-inline-size: 100%; clear: both; min-height: 1em; cursor: text; overflow-wrap: break-word !important; outline: none 0px !important;"><br></p><p style="margin-bottom: 0px; max-inline-size: 100%; clear: both; min-height: 1em; cursor: text; line-height: 1.75em; overflow-wrap: break-word !important; outline: none 0px !important;"><span style="font-size: 14px;">　　注如用胰酶，轧酶温度为40℃，浸水温度、堆置温度相应降低。</span></p><p style="margin-bottom: 0px; max-inline-size: 100%; clear: both; min-height: 1em; cursor: text; line-height: 1.75em; overflow-wrap: break-word !important; outline: none 0px !important;"><br></p></section><section class="_135editor" data-role="paragraph" style="max-inline-size: 100%; margin: 0px; padding: 0px; border: 0px none; z-index: 0; overflow-wrap: break-word !important; outline: none 0px !important;"><section align="center" style="max-inline-size: 100%; margin: 0px; padding: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); overflow-wrap: break-word !important; outline: none 0px !important;"><br style="max-inline-size: 100%; margin: 0px; padding: 0px; overflow-wrap: break-word !important; outline: none 0px !important;"></section></section><section class="_135editor" data-role="paragraph" style="max-inline-size: 100%; margin: 0px; padding: 0px; border: 0px none; z-index: 0; overflow-wrap: break-word !important; outline: none 0px !important;"><p style="margin-bottom: 0px; max-inline-size: 100%; clear: both; min-height: 1em; cursor: text; overflow-wrap: break-word !important; outline: none 0px !important;"><br></p></section><section data-role="paragraph" class="_135editor"><p><br></p></section></section></section></div></div>