TY - JOUR
T1 - Steady-state and time-resolved fluorescence studies of stripped Borage oil
AU - Smyk, Bogdan
AU - Amarowicz, Ryszard
AU - Szabelski, Mariusz
AU - Gryczynski, Ignacy
AU - Gryczynski, Zygmunt
N1 - Funding Information:
Mariusz Szabelski is the recipient of a researcher's mobility program from the Polish Ministry of Science and Higher Education (No. 18/MOB/2007/0).
PY - 2009/7/30
Y1 - 2009/7/30
N2 - In this study we explored the spectroscopic properties of Borage oil, particularly the use of fluorescence techniques to investigate the presence of conjugated fatty acids (CFAs). This research has important health and dietary applications. The absorption and fluorescence spectra of different CFAs and Borage oil in ethanol were measured. Time-domain fluorescence was employed to establish the life times of the samples. We found that Borage oil contains 1.2 × 10-3 mol L-1 of α-eleostearic acid or its isomer (i.e., a conjugated triene), 1.6 × 10-4 mol L-1 of cis-parinaric acid (i.e., a conjugated tetraene) and 1.1 × 10-5 mol L-1 of c-COPA (i.e., a conjugated pentaene). Because of the three-exponential fluorescence intensity decay for Borage oil, other fatty acids with a four conjugated double bond system could not be excluded.
AB - In this study we explored the spectroscopic properties of Borage oil, particularly the use of fluorescence techniques to investigate the presence of conjugated fatty acids (CFAs). This research has important health and dietary applications. The absorption and fluorescence spectra of different CFAs and Borage oil in ethanol were measured. Time-domain fluorescence was employed to establish the life times of the samples. We found that Borage oil contains 1.2 × 10-3 mol L-1 of α-eleostearic acid or its isomer (i.e., a conjugated triene), 1.6 × 10-4 mol L-1 of cis-parinaric acid (i.e., a conjugated tetraene) and 1.1 × 10-5 mol L-1 of c-COPA (i.e., a conjugated pentaene). Because of the three-exponential fluorescence intensity decay for Borage oil, other fatty acids with a four conjugated double bond system could not be excluded.
KW - Borage oil
KW - Conjugated fatty acids (CFAs)
KW - Pentaene
KW - Steady-state fluorescence spectroscopy
KW - Tetraene
KW - Time-resolved fluorescence spectroscopy
KW - Triene
UR - http://www.scopus.com/inward/record.url?scp=66449136317&partnerID=8YFLogxK
U2 - 10.1016/j.aca.2009.05.007
DO - 10.1016/j.aca.2009.05.007
M3 - Article
C2 - 19523559
AN - SCOPUS:66449136317
SN - 0003-2670
VL - 646
SP - 85
EP - 89
JO - Analytica Chimica Acta
JF - Analytica Chimica Acta
IS - 1-2
ER -