Results 11 to 20 of about 438,033 (125)
Zhongguo youzhi旨在为大豆油精炼中脱色剂的应用提供参考，以大豆碱炼油和3种常用脱色剂活性白土、凹凸棒土、中性膨润土为原料，考察了3种脱色剂对大豆油的脱色、脱皂和脱磷脂能力。结果表明：活性白土、凹凸棒土、中性膨润土添加量超过2%后，脱色率上升速率变慢；脱色剂添加量为3%时，活性白土、凹凸棒土、中性膨润土脱色率分别为92.1%、86.9%、90.7%；大豆碱炼油在426、450、479、665 nm波长处有吸收峰，可通过油样在上述4个波长处吸光度的变化来考察脱色剂的脱色能力;脱色剂添加量为1%时，活性白土、凹凸棒土 ...
王宏平，孙日飞，何立军，马莉，蒋甜燕，邵彦智WANG Hongping, SUN Rifei, HE Lijun, MA Li, JIANG Tianyan, SHAO Yanzhi
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, 2017 采用正交实验研究了米糠毛油脱胶工艺，得到的酸法脱胶工艺最佳条件为磷酸添加量0．3％、脱胶温度70℃、加水量3％、反应时间40min，此时米糠油脱胶率为87．7％。在此基础上，采用单因素实验考察了酸化凹凸棒土添加量、脱色温度、脱色时间对脱色率的影响。结果表明：在酸化凹凸棒土添加量5％、脱色温度110℃、脱色时间30min条件下，米糠油脱色率达到96．6％
王璨 +4 more
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蒙脱土对植物油脱色效果的综合评价Comprehensive evaluation of the bleaching effect of montmorillonite on vegetable oil
, 2022 为了开发高效、环保的食用油脱色剂，以一种环保方法（半干法）生产的蒙脱土为研究对象，研究其在不同脱色条件（脱色温度、脱色时间和脱色剂添加量）下对大豆油、葵花籽油和菜籽油品质的影响。结果表明：该蒙脱土具有吸附色素和过氧化物从而降低油脂红值和过氧化值的作用，与脱色前相比，大豆油、葵花籽油和菜籽油的红值最大降幅分别为77.4%、92.3%和87.2%，过氧化值最大降幅分别为82.7%、83.2%和91.2%；蒙脱土用于3种植物油的脱色，植物油中总甾醇和总生育酚含量下降，而酸值总体上缓慢上升。进一步研究发现 ...
黄俊圻1，张海龙1，2，吕晓雅1，谌刚3，胡勇杰3， 李冰4，龚任4，齐玉堂1,2，张维农1,2 HUANG Junqi1, ZHANG Hailong1,2, LYU Xiaoya1, CHEN Gang3, HU Yongjie3, LI Bing4 , GONG Ren4, QI Yutang1,2, ZHANG Weinong1,2
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植物油中的色素及吸附脱色研究进展Progress on pigment and adsorption bleaching of vegetable oil
, 2022 植物油中的色素不仅会影响油脂的色泽，还会降低油脂的品质和贮藏稳定性。脱色过程是去除油脂不良色泽的重要工序，而吸附脱色是油脂企业加工过程中最常用的脱色方法。概述了植物油中色素的来源以及色素的存在对油脂营养和安全性的影响，简要介绍了膜脱色法、光能脱色法、超声辅助脱色法、热脱色法、吸附脱色法等常见的脱色方法，综述了活性白土、活性炭、凹凸棒土（石）、硅胶和复合脱色剂等吸附剂的应用研究进展，总结了吸附脱色目前所存在的问题,如脱色过程中废白土处理率低、深色油脂脱色难，并提出了解决建议（提高废白土中油脂的回收利用 ...
张文龙1,黄成义2，赵晨伟1，金青哲1，王兴国1 ZHANG Wenlong1, HUANG Chengyi2, ZHAO Chenwei1, JIN Qingzhe1, WANG Xingguo1
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, 2023 为对油脂精炼脱色加工提供参考，以活性白土、凹凸棒土以及二者复配作为脱色剂对大豆中和油进行脱色，测定脱色油的酸值、色泽，并通过返酸返色试验探究脱色吸附剂对大豆脱色油返酸返色的影响。结果表明：脱色油酸值与活性白土添加量和复配脱色剂中活性白土质量分数呈正相关，与凹凸棒土添加量呈负相关；脱色剂添加量越多，脱色效果越明显，但在活性白土或凹凸棒土添加量超过3%时，脱色效果增加较少；随活性白土或凹凸棒土添加量的增多，脱色油返酸总体呈先降后升趋势；脱色油会有不同程度的返色，与活性白土相比，凹凸棒土脱色返色程度更高。综上，
蒋甜燕，王宏平，孙日飞，孔伟，李亮亮，孟庆宇 JIANG Tianyan, WANG Hongping, SUN Rifei, KONG Wei, LI Liangliang, MENG Qingyu
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Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Developing efficient catalytic thermal desorption systems is of great significance in the field of sustainable soil remediation. Herein, novel Mn–Ce solid solution modified Co3O4 nanocrystals were successfully prepared for the removal of perfluorooctanoic acid (PFOA) in soil.
Yu‐Hao Liu +8 more
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Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT The design of nanoparticles confined in hollow N‐doped carbon structures is crucial for improving the oxygen reduction reaction (ORR) kinetics, yet achieving this remains a significant challenge. In this work, hollow porous nitrogen‐doped carbon encapsulated FeP/Fe2P (H‐FeP/Fe2P) were successfully constructed via a templating method combined ...
Li‐Xia Wang +8 more
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Evaluating protected areas’ coverage of threats to terrestrial biodiversity
Conservation Biology, Volume 39, Issue 6, December 2025.Abstract Protected areas (PAs) are vital for biodiversity conservation and have expanded globally. However, increasing pressures on biodiversity make it difficult to achieve conservation goals. Using threat probability maps based on the International Union for Conservation of Nature Red List and the World Database of Protected Areas, we analyzed the ...
Katherine Pulido‐Chadid +2 more
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Zhejiang Daxue xuebao. Lixue ban, 2003 以阳离子红X-GRL染料为模型污染物,研究了反应时间、气相氧气流量和水中是否存在溶解氧(DO)等条件对阳离子红X-GRL光降解脱色效果的影响.在缺氧条件下,阳离子红X-GRL染料的光降解脱色效果较差,脱色率仅为9.1%,染料的光降解脱色以光直接降解脱色为主,·OH脱色次之.在有氧条件下,阳离子红X-GRL染料的光降解脱色效果得到显著提高,脱色率由缺氧时的9.1%分别提高到氧气流量为40 L·h-1的27.6%和100L·h-1的38.8%.脱色率的提高主要归因于DO和气相氧气在184.9 ...
ZHAOWei-rong(赵伟荣) +2 more
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Study on Preparation Technology of Polysaccharide from Pleurotus djamor(一种淡红侧耳多糖的制备工艺) [PDF]
Shipin kexue jishu xuebao, 2017 In this study, the extraction of polysaccharides from Pleurotus djamor and its decolorization and deproteinization were investigated. The optimal extraction conditions were obtained by RSM.
TIAN Youqiu(田有秋) +6 more
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