An infra-red study of the cis- and trans-isomers of some c18 fatty acids

2007 ◽  
Vol 3 (10) ◽  
pp. 433-443 ◽  
Author(s):  
N. H. E. Ahlers ◽  
R. A. Brett ◽  
N. G. McTaggart
Keyword(s):  
Fatty Acids ◽  
Trans Isomers ◽  
Cis And Trans Isomers ◽  
Infra Red ◽  
Cis And Trans

Effect of weaning status on lipids of Galician Blond veal: Total fatty acids and 18:1 cis and trans isomers

Meat Science ◽  
2010 ◽  
Vol 86 (2) ◽  
pp. 357-363 ◽  
Author(s):  
Esperanza Bispo ◽  
Teresa Moreno ◽  
Alicia Latorre ◽  
Laura González ◽  
Pedro G. Herradón ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Trans Isomers ◽  
Cis And Trans Isomers ◽  
Total Fatty Acids ◽  
Cis And Trans

A note on the effect of use of bovine somatotropin on the fatty acid composition of the milk fat in dairy cows

1993 ◽  
Vol 57 (2) ◽  
pp. 319-322 ◽  
Author(s):  
P. Polidori ◽  
G. L. Maggi ◽  
V. M. Moretti ◽  
F. Valfrè ◽  
P. Navarotto
Keyword(s):  
Fatty Acids ◽  
Milk Fat ◽  
Considerable Increase ◽  
Bovine Somatotropin ◽  
Trans Isomers ◽  
Milk Fatty Acids ◽  
Recombinant Bovine Somatotropin ◽  
Cis And Trans Isomers ◽  
Cis And Trans ◽  
The Impact

Commencing on day 100 ± 10 of lactation, 10 Italian Friesian cows averaging 32·6 kg milk per day were injected biweekly with recombinant bovine somatotropin (BST), while 10 other cows averaging 33-4 kg milk per day were injected with a placebo. Cows were offered ad libitum a total mixed diet throughout the lactation. The experiment lasted 16 weeks; milk samples were taken before and 16, 62 and 91 days after the commencement of BST injection. The objective was to determine the impact of biweekly injections of BST on the synthesis and proportion of milk fatty acids, particularly on cis and trans isomers and on fatty acids with an odd number of carbon atoms (C15 and C17). A decrease in the proportion of shortchain (C4 to C14) fatty acids (P < 0·001) and an increase in the proportion of long-chain (C16 to C20) fatty acids (P < 0·001) were observed in the first period of the treatment. With regard to cis and trans isomers, a considerable increase of the cis isomers (P < 0·001), particularly C18.1cis9 (oleic acid) was observed, while differences in trans isomers were not statistically significant. Concentrations of C15 (pentadecanoic acid) were not affected but heptadecanoic acid (C17) concentration showed a considerable increase (P < 0·01) but only in the sample taken after 16 days.

scholarly journals Identification of Anthocyanin Compounds in Butterfly Pea Flowers (Clitoria ternatea L.) by Ultra Performance Liquid Chromatography/Ultraviolet Coupled to Mass Spectrometry

Molecules ◽  
2021 ◽  
Vol 26 (15) ◽  
pp. 4539
Author(s):  
Nguyen Minh Thuy ◽  
Vo Minh ◽  
Tran Ben ◽  
My Tuyen Thi Nguyen ◽  
Ho Ha ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Liquid Chromatography ◽  
Ultra Performance Liquid Chromatography ◽  
Negative Ion ◽  
Trans Isomers ◽  
Clitoria Ternatea ◽  
Flower Extract ◽  
Cis And Trans Isomers ◽  
Butterfly Pea ◽  
Cis And Trans

Butterfly pea flower have great sensory attraction, but they have not yet been used widely in Vietnam. Extracts of butterfly pea flowers can be used conveniently as a natural blue colorant for food products. In this study, the identification of anthocyanin compounds in butterfly pea flowers was performed by UPLC coupled with a UV and Mass spectrometer instrument. Positive and negative ion electrospray MS/MS chromatograms and spectra of the anthocyanin compounds were determined. By analyzing the chromatograms and spectra for each ion, five anthocyanins were identified in the butterfly pea flower extract; these were delphinidin-3-(6”‐p-coumaroyl)-rutinoside, cyanidin 3-(6”-p-coumaroyl)-rutinoside, delphinidin-3-(p-coumaroyl) glucose in both cis- and trans- isomers, cyanidin-3-(p-coumaroyl-glucoside) and delphinidin-3-pyranoside. Additionally, based on their intensity, it was determined that cyanidin-3-(p-coumaroyl-glucoside) was the most abundant anthocyanin, followed by cyanidin 3-(6”-p-coumaroyl)-rutinoside, delphinidin-3-(p-coumaroyl-glucoside), delphinidin-3-(6”-p-coumaroyl)-rutinoside and delphinidin-3-pyranoside. In this study, cyanidin derivatives were discovered in butterfly pea flower extract, where these compounds had not been detected in previous studies.

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