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- Chapter 4.The synthesis of the water-soluble modified Nipagin ester series preservatives was investigated. 第四章 研究了水溶性改性尼泊金酯系列（甲、丙）防腐剂的合成方法。
- Chapter 3.The preparationmethod of the Nipagin ester series preservatives was investigated. 第三章 介绍了尼泊金酯系列（甲、乙、丙、丁）防腐剂的合成方法。
- This paper introduces the properties, applications and syntheses of Nipagin ester, and its production situation at home and abroad. 介绍了尼泊金酯的性质、应用与合成方法以及国内外生产情况。
- Recent methods of Nipagin esters were reviewed in the paper. 对近年来尼泊金酯类催化合成方法进行评述。
- It showed that this catalyst was reused and regenerated,and excellent one for the synthesis of Nipagin esters. 且该催化剂具有良好的重复使用和再生能力,非常适宜合成尼泊金酯。
- Nipagin esters was synthesized by the esterification of n-butyl and iso-butyl alcohol with p-hydroxybenzoic acid in the presence of vitamin C. 以维生素C为催化剂,对羟基苯甲酸和正丁醇及异丁醇为原料合成尼泊金正丁酯与尼泊金异丁醇。
- The effect of acid and alcohol mole ratio, the amount of vitamin C catalyst and reaction time on the yield of Nipagin esters was investigated. 考察了酸醇摩尔比,催化剂用量,反应时间等对酯收率的影响。
- Nipagin esters were synthesized by the esterification of dodecyl and octadecyl alcohol with p -hydroxybenzoic acid in the presence of vitamin C. 以维生素C为催化剂,对羟基苯甲酸和十六醇及十八醇为原料合成尼泊金十六酯与尼泊金十八酯。
- Yuan Hai-tao,Rui Han-ming,Ning Zheng-xiang.Study on antibacterial activity of Nipagin esters and fumarates [J].Food Science &Technology,2001(5):43-44. [5]袁海涛;芮汉明;宁正祥.;尼泊金酯类和富马酸酯类抑菌效果的研究 [J]
- At the same time, The paper also briefly prospected the vista of exploiting uses in the condiment and research trends of sodium nipagin esters. 同时阐述了尼泊金酯钠在调味品中的应用前景和生产研究开发动态。
- The development of food preservative at home and abroad is introduced,and especially the properties and applications of a series of Nipagin esters. 介绍了国内外食品防腐剂的发展趋势,并重点介绍了尼泊金系列酯的性质和应用等。
- Keywords nipagin ester;antiseptic agent;synthesis;progress; 尼泊金酯;防腐剂;合成;进展;
- The inhibition effect of Nipagin esters on three kinds of bacteria in neutral culture medium was studiec by means of filter paper disks and spectrophotometric investigation. 该文用滤纸圆片法和分光光度法研究了尼泊金酯等防腐剂在中性条件下对3种常见细菌的抑制作用。
- The synthesis methods of nipagin esters catalyzed by sulfuric acid, p- toluene sulfonic acid, ferric sul-fate hydrate, ferric chloride hexahydrate, aluminium chloride hexahydrate, rare earth compound, solid super acid and heteropoly acid were reviewed. 评述了采用硫酸、甲苯磺酸、合硫酸铁、水合三氯化铁、水合三氯化铝、土化合物、体超强酸和杂多酸等催化剂催化合成对羟基苯甲酸酯的方法。
- Recent methods of Nipagin esters were reviewed in the paper.It is also proposed that the experiment and selection of promising catalysts developed in the recent years should be enhanced. 对近年来尼泊金酯类催化合成方法进行评述。建议对近年来开发的有应用前景的催化剂扩大试验与筛选。
- A salt or an ester of boric acid. 硼酸盐一种硼酸盐或硼酸酯
- Keywords ethyl nipagin ester ethanol catalysis synthesis Chitosan Sulfate; 尼泊金乙酯;催化;合成;壳聚糖硫酸盐;
- Keywords acid catalyst;octyl and iso-propyl nipagin ester;esterification; 酸催化;尼泊金辛酯;尼泊金异丙酯;酯化反应;
- Keywords Nipagin;Nipagin ester;preservative;hydroxy-benzoic acid ester; 尼泊金;尼泊金酯;防腐剂;对羟基苯甲酸酯;
- Keywords nipagin esters;Nd 2O 3;catalysis; 尼泊金乙酯;三氧化二钕;催化;
