甲酯化

用改良的罗兹-哥特里法提取脂肪，然后将样品进行甲酯化，以3%OV-101色谱柱用气相色谱法测定亚油酸。结果：LA的回收率为97.1%&103.3%，RSD为1.53%。

In this paper , fat was extracted by improved Rose-Gottlieb method . After esterification the LA was determined by GC with the column of 3 % OV-101 . The results were that recoveries of LA was 97.1 % - 103.3 % , relative standard deviation was 1.53 % .

在此条件下脂肪酸甲酯化率达到98%以上。

The esterification rate is over 98 % under the optimized conditions .

采用毛细柱气相色谱分析、酸性甲酯化反应和GC-MS证实等手段对棉铃虫雄蛾味刷抽提物进行了结构鉴定。

Extracts of hairpencils ffom male cotton bollworm moth were analyzed by capillary gas chromatography , acid methanolysis , and GC-MS.

本文综述了果胶类化合物的甲酯化取代度的测定方法，包括比色、滴定、高效液相、气相、核磁共振、红外IR等方法。

The methods for determinating degrees of pectins methylation were described , including colorimetric method , titration , GC , HPLC , NMR , IR and so on .

采用两种方法对石榴籽中的脂肪酸进行了甲酯化，所得脂肪酸甲酯经GC-MS分析。

Two methods were used to methylate the fatty acid in pomegranate seeds . The methylated fatty acids were analyzed by GC-MS.

该抗体对甲酯化的IAA有专一性识别，而对IAA的系列类似物及其代谢中间产物的交叉反应均极低。

The antibody showed high specificity to MelAA but little cross-reactivity with some compounds structurally similar to IAA and some intermediates in IAA metabolism .

报道了我国重要药用植物皱皮木瓜中有机酸的酸碱树脂法提取分离、甲酯化以及GC-MS分析结果。

The results of the extracting-separating by acid-alkali resining , esterifying and GC-MS analyzing of the organic acids from Chaenomeles speciosa , a trueborn TCM in the middle of China were reported .

半乳糖醛酸聚糖链部分羧基被甲酯化，部分O-2或O-3位被乙酰基取代。

Parts of carboxyls on the polysaccharide were methylated , while some were replaced by acetyl at the position of O-2 or O-3 .

方法：选用10%丁二酸二乙二醇酯（DEGS）色谱柱，样品经乙酸乙酯提取后，用三氟化硼-乙醚/甲醇甲酯化处理。

Meth ods : 10 % dethylenegly col succinate ( DEGS ) column was chosen and extractions with ethyl acetate from samples were methylated with BF 3 - ether / methanol .

最佳甲酯化工艺条件为：料溶摩尔比1：1.5，酶用量60plu/g，反应温度60℃，反应时间8h，该条件下转化率达94.78%。

The optimum factor combinations are : the molar ratio of substances 1:1.5 , lipase concentration 60plu / g , esterification temperature 60 ℃ and esterification time 8 hours . Under these conditions , the optimun esterification ratio is 94.78 % .

经正交实验确定甲酯化最佳条件为：反应温度65℃，醇油摩尔比7∶1，反应时间60min，催化剂用量为油重的0.9%。

Through orthogonal experiment test , the optimum methylation conditions were as follows : reaction temperature 65 ℃, molar ratio of methanol to oil 7 ∶ 1 , reaction time 60 min , and dosage of sodium methoxide catalyst 0.9 % .

新型除草剂助剂甲酯化棉籽油乳剂的研究

A New Herbicide Adjuvant : Methyl Esterfied Cottonseed Oil Emulsion

蓖麻油的酯交换甲酯化反应

Methyl esterification of castor oil by ester exchanging reaction

专一识别甲酯化赤霉素7,4的单克隆抗体的制备

Preparation of Monoclonal Antibodies Specific for Methyl Esters of Gibberellins A_7 and A_4

甲酯化植物油助剂对除草剂的药效增强作用

The research on the enhancement effect of methylated vegetable oil adjuvant on herbicides

对苯甲酸甲酯化的合成工艺条件及抑菌效果进行了研究。

Effect of fatty acid methyl esterification methods on analysis of conjugated linoleic acids ;

杜仲籽油中α-亚麻酸的甲酯化方法优化乙酰蓖麻酸甲氧基乙酯

Optimization of methyl esterification method of α - linolenic acid in Eucommia seed oil

甲酯化率979%，VE保留率94%。

Esterification rate is up to 97.9 % and V_E retention rate is 94 % .

样品经提取后用三氟化硼-乙醚/甲醇，甲酯化处理。

Samples were extracted with ethyl acetate and were methylated with BF3 ether / methanol .

测定果胶中甲酯化取代度的方法

Methods for Determinating Degrees of Pectins Methylation

建立了甲酯化-毛细管气相色谱法测定脂肪乳剂中反式脂肪酸。

A methylation-capillary GC method was established for the determination of trans-fatty acids in lipid emulsion .

本论文主要探讨通过脱色或甲酯化工艺，改变废油脂的某些物理化学性状，从而使之能够再利用。

This paper focuses on using decoloration and methyl-esterification technology to change some of its qualities and making it renewable .

鱼油甲酯化试验表明，快速酯化法操作简单，所用试剂比较常规，是最适合应用于鱼油甘油三酯的甲酯化方法。

Esterification experiment showed that the best method was quick esterification whose process was simple and the reagents used were common .

研究了在催化剂存在下低酯化度果胶与甲醇进行的甲酯化反应。

The methyl - esterification reaction of low - methoxyl pectin with methylalcohol by the presence of some catalysts was observed .

2,6-萘二甲酸甲酯化反应工艺研究&催化剂的筛选及工艺条件的确定

Research for the process of esterifying 2,6-naphthalene dicarboxylic acid by methanol & determination for the optimum catalyst and the reaction conditions

用乙醚萃取蓖麻籽油，油脂皂化后的脂肪酸采用三氟化硼-甲醇溶液进行甲酯化。

Ethylether was used to extract castor seed oil and boron fluoride-methanol solution was used to methyl-esterify the saponified fatty acids .

方法用索氏提取法对脂肪油进行提取，采用不同甲酯化处理后，采用气相色谱-质谱联用技术分离和鉴定其组分和含量。

MethodsThe fatty acids were extracted by Soxlet extraction , etherified by different methods and its components were analyzed by GC / MS.

选用强酸性阳离子交换树脂代替浓硫酸催化剂，对古龙酸的甲酯化反应进行了探索性研究。

In this paper , the strong acid cation exchange resin has been studied as the catalyst for the esterification of gulonic acid .

棉籽油脱臭馏出物中含有40%-80%的游离脂肪酸，对这部分脂肪酸的甲酯化进行了研究。

The percentage of free fatty acid ( FFA ) in cottonseed oil deodorizer distillate ( CODD ) is 40 % ~ 80 % .

采用盆栽试验探索甲酯化大豆油助剂中乳化剂含量与种类变化对其增效作用的影响以及喷液量与甲酯化大豆油增效作用间的关系。

We explored the influence of different emulsifier amount and species in MSO adjuvant and different spray volume to synergism of MVO by pot test .