The triacylglycerols of two Sapindaceae seed oils : study of Litchi sinensis Sonn. and Euphoria longana Lam. lipids.
Litchi (Litchi sinensis [L. chinensis]) and longan (Euphoria longana [Dimocarpus longan]) seed oils are known for their high cyclopropanoid fatty acid contents (41.5%) and 18.7, respectively). In these 2 oils, the predominant cyclic fatty acids are the cis-7,8-methylenehexadecanoic (Mh) and cis-9,10-methyleneoctadecanoic (Mo) acids. The distribution of these particular fatty acids in the triacylglycerols was studied. After isolation on an open silica column, the triacylglycerols were analysed by HPLC and silver TLC. The triacylglycerols were then submitted to chemical hydrolysis using ethylmagnesium bromide, a reagent without structural specificity and regioselectivity. The results enabled the triacylglycerol composition to be determined, with particular interest in the 2(1,3)-type isomer. The sn-2 position of the majority of the triacylglycerol molecular species was esterified by oleic acid (O), which was present in the internal position in 50% of fatty acids. Litchi seed oil was characterized by one major triacylglycerol O(MoMo); 26.1% content. The longan seed oil contained 2 major triacylglycerols O(PS) and O(MoMo), where P is palmitic acid and S is stearic acid; 14.0% and 11.2% a, respectively.
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Subjects: | chemical composition, cyclopropenoid fatty acids, fatty acids, fatty oil plants, fatty oils, fruit crops, isomers, longans, plant composition, seed oils, seeds, subtropical fruits, triacylglycerols, Fatty acids, Seeds, Tropical fruit, |
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dig-fedepalma-123456789-830582022-08-05T10:11:53Z The triacylglycerols of two Sapindaceae seed oils : study of Litchi sinensis Sonn. and Euphoria longana Lam. lipids. Grondin, I., autor. aut 56461 Farines, M. 42357 Smadja, J. 56462 Soulier, J. 42358 chemical composition cyclopropenoid fatty acids fatty acids fatty oil plants fatty oils fruit crops isomers longans plant composition seed oils seeds subtropical fruits triacylglycerols Fatty acids Seeds Seeds Tropical fruit Litchi (Litchi sinensis [L. chinensis]) and longan (Euphoria longana [Dimocarpus longan]) seed oils are known for their high cyclopropanoid fatty acid contents (41.5%) and 18.7, respectively). In these 2 oils, the predominant cyclic fatty acids are the cis-7,8-methylenehexadecanoic (Mh) and cis-9,10-methyleneoctadecanoic (Mo) acids. The distribution of these particular fatty acids in the triacylglycerols was studied. After isolation on an open silica column, the triacylglycerols were analysed by HPLC and silver TLC. The triacylglycerols were then submitted to chemical hydrolysis using ethylmagnesium bromide, a reagent without structural specificity and regioselectivity. The results enabled the triacylglycerol composition to be determined, with particular interest in the 2(1,3)-type isomer. The sn-2 position of the majority of the triacylglycerol molecular species was esterified by oleic acid (O), which was present in the internal position in 50% of fatty acids. Litchi seed oil was characterized by one major triacylglycerol O(MoMo); 26.1% content. The longan seed oil contained 2 major triacylglycerols O(PS) and O(MoMo), where P is palmitic acid and S is stearic acid; 14.0% and 11.2% a, respectively. Litchi (Litchi sinensis [L. chinensis]) and longan (Euphoria longana [Dimocarpus longan]) seed oils are known for their high cyclopropanoid fatty acid contents (41.5%) and 18.7, respectively). In these 2 oils, the predominant cyclic fatty acids are the cis-7,8-methylenehexadecanoic (Mh) and cis-9,10-methyleneoctadecanoic (Mo) acids. The distribution of these particular fatty acids in the triacylglycerols was studied. After isolation on an open silica column, the triacylglycerols were analysed by HPLC and silver TLC. The triacylglycerols were then submitted to chemical hydrolysis using ethylmagnesium bromide, a reagent without structural specificity and regioselectivity. The results enabled the triacylglycerol composition to be determined, with particular interest in the 2(1,3)-type isomer. The sn-2 position of the majority of the triacylglycerol molecular species was esterified by oleic acid (O), which was present in the internal position in 50% of fatty acids. Litchi seed oil was characterized by one major triacylglycerol O(MoMo); 26.1% content. The longan seed oil contained 2 major triacylglycerols O(PS) and O(MoMo), where P is palmitic acid and S is stearic acid; 14.0% and 11.2% a, respectively. text d |
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chemical composition cyclopropenoid fatty acids fatty acids fatty oil plants fatty oils fruit crops isomers longans plant composition seed oils seeds subtropical fruits triacylglycerols Fatty acids Seeds Seeds Tropical fruit chemical composition cyclopropenoid fatty acids fatty acids fatty oil plants fatty oils fruit crops isomers longans plant composition seed oils seeds subtropical fruits triacylglycerols Fatty acids Seeds Seeds Tropical fruit |
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chemical composition cyclopropenoid fatty acids fatty acids fatty oil plants fatty oils fruit crops isomers longans plant composition seed oils seeds subtropical fruits triacylglycerols Fatty acids Seeds Seeds Tropical fruit chemical composition cyclopropenoid fatty acids fatty acids fatty oil plants fatty oils fruit crops isomers longans plant composition seed oils seeds subtropical fruits triacylglycerols Fatty acids Seeds Seeds Tropical fruit Grondin, I., autor. aut 56461 Farines, M. 42357 Smadja, J. 56462 Soulier, J. 42358 The triacylglycerols of two Sapindaceae seed oils : study of Litchi sinensis Sonn. and Euphoria longana Lam. lipids. |
description |
Litchi (Litchi sinensis [L. chinensis]) and longan (Euphoria longana [Dimocarpus longan]) seed oils are known for their high cyclopropanoid fatty acid contents (41.5%) and 18.7, respectively). In these 2 oils, the predominant cyclic fatty acids are the cis-7,8-methylenehexadecanoic (Mh) and cis-9,10-methyleneoctadecanoic (Mo) acids. The distribution of these particular fatty acids in the triacylglycerols was studied. After isolation on an open silica column, the triacylglycerols were analysed by HPLC and silver TLC. The triacylglycerols were then submitted to chemical hydrolysis using ethylmagnesium bromide, a reagent without structural specificity and regioselectivity. The results enabled the triacylglycerol composition to be determined, with particular interest in the 2(1,3)-type isomer. The sn-2 position of the majority of the triacylglycerol molecular species was esterified by oleic acid (O), which was present in the internal position in 50% of fatty acids. Litchi seed oil was characterized by one major triacylglycerol O(MoMo); 26.1% content. The longan seed oil contained 2 major triacylglycerols O(PS) and O(MoMo), where P is palmitic acid and S is stearic acid; 14.0% and 11.2% a, respectively. |
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Texto |
topic_facet |
chemical composition cyclopropenoid fatty acids fatty acids fatty oil plants fatty oils fruit crops isomers longans plant composition seed oils seeds subtropical fruits triacylglycerols Fatty acids Seeds Seeds Tropical fruit |
author |
Grondin, I., autor. aut 56461 Farines, M. 42357 Smadja, J. 56462 Soulier, J. 42358 |
author_facet |
Grondin, I., autor. aut 56461 Farines, M. 42357 Smadja, J. 56462 Soulier, J. 42358 |
author_sort |
Grondin, I., autor. aut 56461 |
title |
The triacylglycerols of two Sapindaceae seed oils : study of Litchi sinensis Sonn. and Euphoria longana Lam. lipids. |
title_short |
The triacylglycerols of two Sapindaceae seed oils : study of Litchi sinensis Sonn. and Euphoria longana Lam. lipids. |
title_full |
The triacylglycerols of two Sapindaceae seed oils : study of Litchi sinensis Sonn. and Euphoria longana Lam. lipids. |
title_fullStr |
The triacylglycerols of two Sapindaceae seed oils : study of Litchi sinensis Sonn. and Euphoria longana Lam. lipids. |
title_full_unstemmed |
The triacylglycerols of two Sapindaceae seed oils : study of Litchi sinensis Sonn. and Euphoria longana Lam. lipids. |
title_sort |
triacylglycerols of two sapindaceae seed oils : study of litchi sinensis sonn. and euphoria longana lam. lipids. |
work_keys_str_mv |
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