Results 121 to 130 of about 742,946 (271)
, 2013 本论文研究直接以油脂发酵醪液为原料，进行水相微生物油脂提取和转化，取得如下结果： （1）建立了酶辅助水相微生物油脂提取方法。直接以Rhodosporidium toruloides Y4发酵醪液为原料，经微波热处理、重组β-1,3-葡甘露聚糖酶（plMAN5C）处理和乙酸乙酯萃取，在含水量为92.0%的体系中，获得了96.6%的油脂提取率； （2）确定了酶辅助水相微生物油脂提取方法易放大。在10-L规模体系中，R. toruloides Y4发酵醪液经热处理、酶解和乙酸乙酯浸提，油脂提取率达到92.9%。
靳国杰
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Rare Metals, Volume 45, Issue 10, October 2026.ABSTRACT Zinc‐based biodegradable metals are promising implant materials, and additive manufacturing offers a powerful route for their patient‐specific fabrication. However, process‐induced surface defects can accelerate degradation and compromise biocompatibility, rendering post‐processing essential.
Yixuan Shi +13 more
wiley +1 more source
Rare Metals, Volume 45, Issue 10, October 2026.ABSTRACT Photocatalytic hydrogen peroxide (H2O2) production from water and oxygen driven by solar energy represents a highly promising green and sustainable strategy. Herein, lignin‐derived carbon quantum dots (LCDs) were strategically introduced at the heterojunction between a Bi‐based metal organic framework (Bi‐MOF) and ZnIn2S4 (ZIS).
Wanpeng Sun +8 more
wiley +1 more source
, 2014 本发明涉及植物甾醇的生产制备领域，具体地说是一种从菊芋枝叶中提取甾醇的方法。具体以菊芋枝叶为原料，原料浸在石油醚-乙醇体系中，5-35℃下搅拌反复浸提，浸提后溶剂旋蒸回收后得浓缩浸膏，所得浸膏依次进行硅胶柱层析、凝胶柱层析和制备高效液相色谱分离，分别得纯度均大于90%的β-谷甾醇(I)和豆甾醇(II)。本发明所使用的提取方法能够保持产品的天然特性，所用溶剂可以回收再利用，常温提取减少溶剂挥发损失并节约能源，石油醚乙醇毒性小 ...
季乃云, 王超之, 苗凤萍
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Rare Metals, Volume 45, Issue 10, October 2026.ABSTRACT Spent automotive exhaust catalysts represent the largest secondary resource of palladium (Pd), and their efficient recovery is essential to support the sustainability of Pd‐related industries. Inspired by supramolecular chemistry, a novel calixarene derivative, 5,11,17,23‐tetra‐tert‐butyl‐25,27‐bis[(N′‐hydroxyacetimidamide)ethoxy]‐26,28 ...
Tao Ge +8 more
wiley +1 more source
Zhongguo youzhi为了对水酶法提取酸枣仁油的工业化应用提供参考，以酸枣仁为原料，通过单因素试验和响应面试验对水酶法提取酸枣仁油的工艺条件进行优化，并将水酶法提取的酸枣仁油与索氏提取法和超声辅助提取法提取的酸枣仁油的体外抗氧化活性和脂肪酸组成进行比较。结果表明：水酶法提取酸枣仁油的最优工艺条件为料液比1∶ 2、碱性蛋白酶添加量3%、酶解温度40 ℃、酶解时间9 h、酶解 pH 10，在此条件下酸枣仁油提取率达54.84%；与其他2种工艺提取的酸枣仁油相比，水酶法提取的酸枣仁油体外抗氧化活性最强 ...
胡亚宁1,2，刘旭东1,2，马志博1,2，魏谦1,2，黄建1,2HU Yaning1,2, LIU Xudong1,2, MA Zhibo1,2, WEI Qian1,2, HUANG Jian1,2
doaj +1 more source
, 2016 采用索氏提取法提取水浸预处理后的五味子中的木脂素,考察了虹吸次数、液固比、颗粒粒径及乙醇浓度对萃取率的影响,采用响应面法进行优化.结果表明,五味子醇甲的最佳提取条件为:乙醇浓度98.05%(?),液固比67.20m L/g,颗粒平均粒度0.33 mm,该条件下理论萃取率为80.90%,实际萃取率为77.17%;五味子甲素的最佳提取条件为:乙醇浓度96.38%(?),液固比72.52 m L/g,颗粒平均粒度0.21 mm,该条件下五味子甲素理论萃取率为77.11%,实际萃取率为74.31 ...
肖清贵 +3 more
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Rare Metals, Volume 45, Issue 10, October 2026.ABSTRACT Metal–organic framework (MOF) membranes are a novel class of composite membranes. They use crystalline porous MOF materials as separation layers or functional fillers. Because of their well‐ordered and tunable pore structures and highly controllable chemical environments, MOF membranes show broad application prospects in gas separation ...
Yanqing Qu +7 more
wiley +1 more source
, 1999 本发明是一种螺旋藻营养成分的分步提取技术，主要包括冻融、组合酶解、热水提取等过程。该方法提取充分，所得营养液可分别或配合使用，制成不同类型的饮料、口服液或化妆品添加剂。提取过程中不用酸、碱或有机溶剂，不污染环境，操作方便 ...
沈银武 +8 more
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