优博干燥山楂渣提取液喷雾干燥塔设�?参数-价格-中国粉体罐�/title>

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$(this).css({"color":"#1479d7","border-bottom-color":"#1479d7"}); }); }); </script>  <div class="cpjj"> <p style="color: rgb(51, 51, 51); font-family: 微软雅黑; font-size: 12.727272033691406px; line-height: 25px; white-space: normal;">山楂渣提取液<strong>喷雾干燥塔设夆�/strong></p><p style="color: rgb(51, 51, 51); font-family: 微软雅黑; font-size: 12.727272033691406px; line-height: 25px; white-space: normal;"> (一)工艺流程</p><p style="color: rgb(51, 51, 51); font-family: 微软雅黑; font-size: 12.727272033691406px; line-height: 25px; white-space: normal;">山楂渣→漂洗→水解抽提→粗滤→离心分离→过滤→浓缩→<strong>喷雾千燥</strong>→果胶粉</p><p style="color: rgb(51, 51, 51); font-family: 微软雅黑; font-size: 12.727272033691406px; line-height: 25px; white-space: normal;">(�?操作要点说明</p><p style="color: rgb(51, 51, 51); font-family: 微软雅黑; font-size: 12.727272033691406px; line-height: 25px; white-space: normal;">(1)漂洗：为了不影响果胶的质量和凝胶力，浸提后的山楂渣需要用水漂洗，以进一步除去渣中残留的糖、酸、色素等可溶性成分、�/p><p style="color: rgb(51, 51, 51); font-family: 微软雅黑; font-size: 12.727272033691406px; line-height: 25px; white-space: normal;">(2)水解抽提：包括原果胶的水解和果胶溶出两个过程。一般用热的稀酸溶液作为水解液进行水解，使原果胶成为可溶性果胶，但水解不要过度，防止可溶性果胶降解为果胶酸。抽提效果与水解液的酸度、水解抽提的温度、时间有关，也可采用多次抽提。根据经验，一般水溶液的pH值应保持�?.8�?.5，水解抽提温�?0�?5℃，时间50�?0分钟，抽提用�?*经过软化处理、�/p><p style="color: rgb(51, 51, 51); font-family: 微软雅黑; font-size: 12.727272033691406px; line-height: 25px; white-space: normal;">(3)抽提液的处理：抽提液经过粗滤后，用蝶片式离心分离机分离出固体杂质，再用酶水解抽提液中的淀粉。酶反应条件是：淀粉酶添加�?％～2％，反应温度45�?0℃，时间2�?小时，酶反应后加热，�?5�?0℃温度下保持3�?分钟灭酶。在其中加入0.3％～0.5％活性炭，在50�?0℃下搅拌20�?0分钟，使果胶脱色�?后经过硅藻土过滤，可得澄清的果胶抽提液、�/p><p style="color: rgb(51, 51, 51); font-family: 微软雅黑; font-size: 12.727272033691406px; line-height: 25px; white-space: normal;"> (4)果胶抽提液的浓缩：一般用真空加热浓缩法，将澄清的果胶抽提液放入真空蒸发器中，�?1.3�?6.6千帕真空下浓缩，使果胶液的可溶性固形物含量�?％～9％。这种浓缩液可以作饮料原料用，也可进一步加工成果胶粉、�/p><p style="color: rgb(51, 51, 51); font-family: 微软雅黑; font-size: 12.727272033691406px; line-height: 25px; white-space: normal;"> (5)果胶粉的加工：用浓缩果胶液加工果胶粉有以下几种方法：</p><p style="color: rgb(51, 51, 51); font-family: 微软雅黑; font-size: 12.727272033691406px; line-height: 25px; white-space: normal;">①喷雾干燥法：用喷雾干燥机干燥，热风温度130�?60℃，干燥后用孔径0.25毫米的筛筛分。用这种方法加工成的果胶粉颗粒细、溶解性好、成本低，但成品果胶粉中杂质较高、�/p><p style="color: rgb(51, 51, 51); font-family: 微软雅黑; font-size: 12.727272033691406px; line-height: 25px; white-space: normal;">②乙醇沉淀法：将浓缩果胶液放入凝结器中，添加果胶液�?.5％的盐酸，搅�?0秒，促进果胶的凝结，并溶解部分盐类，减少杂质沉淀。然后加入等量的浓度90％的乙醇，边加边搅拌，加完后每隔2�?分钟搅拌一次，果胶即沉淀析出。用压榨机去液汁，榨出的液汁供乙醇回收用。在沉淀的果胶中加果�?倍量的浓度为95％的乙醇，边搅拌边洗�?.5小时，然后取出凝结果胶，榨干液汁。如此反复洗�?次，榨干后，将凝结果胶送入真空干燥室中，在65�?5℃下干燥至水分含�?％以下为止。将干燥果胶粉研细，�?0目筛(筛孔直径0.25毫米)，筛后尽快包装。用此方法加工的果胶粉纯度高，凝胶力强，但成本高，耗用的乙醇多，因此，用这种方法制取果胶粉时必须配备乙醇回收装置、�/p><p style="color: rgb(51, 51, 51); font-family: 微软雅黑; font-size: 12.727272033691406px; line-height: 25px; white-space: normal;">③铝盐沉淀法：通常用硫酸铝沉淀，果胶抽提液可不经浓缩处理。将果胶液在搅拌过程中慢慢加入一定浓度的硫酸铝溶液，然后用氢氧化铵溶液调整pH�?.8�?.2，调pH值应在搅拌下进行，以免局部碱化而引起果胶的脱甲基作用。当pH值达�?.5左右时，开始生成氢氧化铝，pH超过3.5时，氢氧化铝就与果胶一起沉淀，形成黄绿色的凝胶体。经过搅拌并放置一段时间，果胶便可完全沉淀。用滚筒筛沥去沉淀果胶的水分，并用冷水洗涤去除过多的母液，然后压滤，并将滤饼破碎成3毫米大小的碎片。由于氢氧化铝不溶于乙醇，用含有10％盐酸的乙醇滚洗氢氧化铝—果胶沉淀的碎片，就可将其中的氢氧化铝转变为氯化铝，使铝与果胶分离。为了去酸，果胶要用75％的碱性乙醇和中性无水乙醇先后洗涤。压滤后的湿果胶约含60％的水分，经干燥至含水量7％～10％后便可研细、过筛和包装。用铝盐法生产的果胶呈黄绿色。此法的优点是乙醇用量少，但铝离子不易除尽，会使果胶中含有较多的灰分、�/p><p><br/></p> </div>  <div class="cxd"> <div class="cxd_tit"><span></span>创新炸�/div> <p style=" color: #333; 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