Eicosapentaenoic Acid Enrichment from Sardine Oil by Argentation Chromatography
作者:Kajal Chakraborty、R. Paul Raj
DOI:10.1021/jf071407r
日期:2007.9.1
with 93.74% yield. After complexation of saturated and less unsaturated fatty acids by ureacomplexation, argentation chromatography resulted in an EPA of high purity (99.6%) with an overall recovery of 54.09% using 50% diethyl ether/n-hexane as eluting solvent. The peroxide (POV) and thiobarbituric acid (TBS) values were found to be highest (4.0 mequiv of O2/kg and 5.2 mg of malondialdehyde/kg, respectively)
在不同温度(2、4和6摄氏度)和尿素/脂肪酸比(2:1、3:1和4:1)下,使用甲醇通过尿素分馏浓缩源自化学水解沙丁鱼油的二十碳五烯酸(EPA) w / w),并通过中和氧化铝柱色谱法纯化。通过气-液相色谱法和作为FAME和N-酰基吡咯烷化物的气相色谱-质谱法确定了各个脂肪酸的脂肪酸甲酯(FAME)。在FAME的质量裂解模式中,基峰被指定为通过McLafferty重排获得的1-甲氧基乙烯醇部分(m / z = 74)。在FAME-PUFA中,在具有四个或更多双键的脂肪酸中形成了环状对yl离子(m / z = 91)。N-酰基吡咯烷化物的基峰是McLafferty重排离子,1-(吡咯烷-1-基)乙烯醇(m / z = 113)。在4摄氏度的结晶温度下,尿素/脂肪酸比例为4:1(w / w)时,EPA的最高浓度为47.78%,收率为93.74%。通过尿素络合将饱和脂肪酸和较少不饱和脂肪酸络合后
Variation in Fatty Acid Composition of <i>Artemia salina</i> Nauplii Enriched with Microalgae and Baker's Yeast for Use in Larviculture
作者:Rekha D. Chakraborty、Kajal Chakraborty、E. V. Radhakrishnan
DOI:10.1021/jf063654l
日期:2007.5.1
The high content of the essential fattyacids in some microalgae and baker'syeast has made them excellent diets for boosting the fattyacid content of livefood Artemia. The influences of baker'syeast (Saccharomyces cerevisiae) and three microalgae, viz., Chlorella salina, Chaetoceros calcitrans, and Nannochloropsis salina, were tested as diet components in marine livefeed brine shrimp Artemia salina
Several classes of biologically occurring fatty acid amides have been reported from mammalian and plant sources. Many amides conjugated with fatty acids of mammalian origin exhibit specific activation of individual receptors. Their potential as pharmacological tools or as lead compounds towards the development of novel therapeutics is of great interest. Hence, access to such amides by a practical,