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Research on Mechanism of Decarboxylation of Intermediates Involved in Preparation of Flavor Furanone(食用香料呋喃酮制备过程中中间体脱羧反应机理研究) [PDF]
Shipin kexue jishu xuebao, 2023 The decarboxylations of the intermediates involved in the industrial production of furanone starting from diethyl α-methyldiglycolate and diethyl oxalate were investigated. Furanone was obtained through two successive Claisen condensations, hydrolysis of
WANG Yutong(王禹茼) +5 more
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Synthesis and Structure Characterization of Bioactive Polymethoxy Flavonoids Carboxylic Acid and Amino Acids Derivatives(生物活性多甲氧基黄酮羧酸和氨基酸衍生物的合成及其结构表征) [PDF]
Shipin kexue jishu xuebao, 2020 Polymethoxy flavonoids (PMFs) are a class natural products, which almost exclusively exist in citrus plants possessing distinguished anti-carcinogenic, anti-inflammatory and antioxidative activities.
LIU Wei(刘伟) +3 more
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Effect of Different Emulsion Stabilizers on Stability of Whole Grain Milk and Proportion Optimization(不同乳化稳定剂对全谷物糙米营养乳稳定性的影响及其配比优化) [PDF]
Shipin kexue jishu xuebao, 2017 The major factors affected the stability of whole grain milk was investigated. Then the emulsion stabilizer was screened and its proportion was optimized.
MA Yongxuan(马永轩) +9 more
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Gongye shui chuli, 1995 以高锰酸钾和次氯酸钠为氧化剂对淀粉进行适度重叠氧化制得了高羧基含量和适度分子量的羧酸化淀粉，经磷酸酯化反应制得羧酸磷酸化淀粉。实验表明该药剂具有优良的阻垢和缓蚀性能，并具有良好的协同效应。
叶文玉, 陈卫平, 董自祥
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Zhongguo youzhi, 2022 为比较不同修饰方法对油茶籽粕多糖抗氧化活性的影响，通过硫酸酯化、羧甲基化及乙酰化3种方法对纯化的油茶籽粕多糖(COP)进行分子修饰，以制备具有不同取代度的COP。采用体外实验法，以羟自由基(·OH)、超氧阴离子自由基（·O-2）及DPPH自由基(DPPH·)清除率为指标，探究COP及其分子修饰产物的抗氧化活性。结果表明：较低取代度的硫酸酯化修饰能提高COP对·OH、·O-2以及DPPH·的清除能力；高取代度的羧甲基化修饰能提高COP对·OH的清除能力，低取代度的羧甲基化修饰则能提高COP对DPPH ...
杨建安1，2，张超1，文焱炳2，方芳1YANG Jian′an1，2, ZHANG Chao1,WEN Yanbing2, FANG Fang1
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Gongye shui chuli, 2015 羧酸系阻垢剂具有对水环境无磷污染优势。通过实验对新型聚醚型羧酸系共聚物马来酸酐-烯丙氧基聚乙烯氧基羧酸钠(MA-APEC)、丙烯酸-烯丙氧基聚乙烯氧基羧酸钠(AA-APEC)及羧酸系聚合物水解聚马来酸酐、聚丙烯酸、丙烯酸/丙烯酸羟丙酯的阻磷酸钙垢能力进行了对比研究。实验结果显示, 5种阻垢剂均可使磷酸钙晶体形貌发生改变, 但拥有强亲水性聚乙烯氧基链段的聚合物MA-APEC和AA-APEC具有更优异的阻磷酸钙垢能力。
符嫦娥 +5 more
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MA/HPA/IPPA膦酰基羧酸三元共聚物阻垢分散性能的研究
Gongye shui chuli, 2003 考察了合成的马来酸酐(MA)/丙烯酸羟丙酯(HPA)/异丙烯膦酸(IPPA)新型膦酰基羧酸共聚物对碳酸钙、硫酸钙和磷酸钙垢的阻垢性能，探讨了MA/HPA/IPPA膦酰基羧酸共聚物稳定锌离子和分散氧化铁能力．结果表明，MA/HPA/IPPA膦酰基羧酸三元共聚物不仅具有优异的抑制钙盐沉积 的性能，而且具有良好的稳定金属锌离子和分散氧化铁颗粒能力，是一种综合性能较好的多功能水质稳定剂．
何焕杰 +5 more
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四川大学学报. 自然科学版, 2002 作者以二苄胺 (2 )、原甲酸三乙酯以及亚磷酸二乙酯 (3)为原料经四步反应合成了含羧基的偕二膦酸酯 (1) ,总收率 4 4 %～ 4 5 % .目标物结构经IR ,1HNMR和元素分析确证 .结果表明 ,该方法实验操作简单 ,收率高 ,该反应是合成含羧基的偕二膦酸酯 (1 ...
郭子维, 郭丽, 李佩杰, 吴勇
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Composition Analysis of Phenolic Compounds with Different Polarities in Walnut Green Husk(核桃青皮不同极性酚类物质组成分析) [PDF]
Shipin kexue jishu xuebao, 2019 As a by-product of walnut processing, walnut green husk contains different polar phenolic substances with different compositions. In order to grading utilization of walnut green husk resources, orthogonal test was used to optimize the extraction process ...
LIU Rui(刘瑞) +4 more
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Gongye shui chuli, 1989 本文讨论了油田常见垢CaCO3、CaSO4和BaSO4生成的原因和影响结垢的因素,油田水防垢处理使用的无机磷酸盐、有机磷酸酯、有机膦酸、膦羧酸和高分子防垢剂的结构与性能的关系。
朱清泉
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