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Analysis of aroma components in fresh Litchi by HS-SPME-GC-MS.

Chen YuXu, Cai Chang-he, Zeng Qing-xiao

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Abstract

The aroma components extracted from fresh later-harvest Litchi Nuomici were analyzed by HS-SPME-GC-MS.36 Kinds of compounds were identified with their total content of 96.97%.The major constituents were alkenes(73.58%),esters(9.24%),aromatic compounds(5.69%),alcohols(3.6%),heterocyclic compounds(2.09%),nitrogen compounds(1.30%),and alkanes(0.44%),among which the main aroma components were a-Myrcene(19.41%),DL-Limonene(19.09%),1-methyl-4-(1-methylethylidene) –Cyclohexene(18.28%),1-methoxy-3,7-dimethyl-2,6-Octadiene(4.98%),1-butanol,3-methyl-,acetate(4.5%),2-Buten-1-ol,3-methyl-,acetate(4.02%),1,2,4a,5,6,8a-hexahydro -4,7-dimethyl-1-(1-methylethyl)-,(1a,4aa,8aa)-Naphthalene(3.10%),and a –Elemene(2.49%) .Compared with other kinds of Litchi,similar main components of Litchi aroma were found as alkenes,alcohols,esters and alkanes,while their composing and relative contents varied with the different kinds of Litchi.

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What this paper is about

The aroma components extracted from fresh later-harvest Litchi Nuomici were analyzed by HS-SPME-GC-MS.36 Kinds of compounds were identified with their total content of 96.97%.The major constituents were alkenes(73.58%),esters(9.24%),aromatic compounds(5.69%),alcohols(3.6%),heterocyclic compounds(2.09%),nitrogen compounds(1.30%),and alkanes(0.44%),among which the main aroma components were a-Myrcene(19.41%),DL-Limonene(19.09%),1-methyl-4-(1-methylethylidene) –Cyclohexene(18.28%),1-methoxy-3,7-dimethyl-2,6-Octadiene(4.98%),1-butanol,3-methyl-,acetate(4.5%),2-Buten-1-ol,3-methyl-,acetate(4.02%),1,2,4a,5,6,8a-hexahydro -4,7-dimethyl-1-(1-methylethyl)-,(1a,4aa,8aa)-Naphthalene(3.10%),and a –Elemene(2.49%) .Compared with other kinds of Litchi,similar main components of Litchi aroma were found as alkenes,alcohols,esters and alkanes,while their composing and relative contents varied with the different kinds of Litchi.

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Available abstract

The aroma components extracted from fresh later-harvest Litchi Nuomici were analyzed by HS-SPME-GC-MS.36 Kinds of compounds were identified with their total content of 96.97%.The major constituents were alkenes(73.58%),esters(9.24%),aromatic compounds(5.69%),alcohols(3.6%),heterocyclic compounds(2.09%),nitrogen compounds(1.30%),and alkanes(0.44%),among which the main aroma components were a-Myrcene(19.41%),DL-Limonene(19.09%),1-methyl-4-(1-methylethylidene) –Cyclohexene(18.28%),1-methoxy-3,7-dimethyl-2,6-Octadiene(4.98%),1-butanol,3-methyl-,acetate(4.5%),2-Buten-1-ol,3-methyl-,acetate(4.02%),1,2,4a,5,6,8a-hexahydro -4,7-dimethyl-1-(1-methylethyl)-,(1a,4aa,8aa)-Naphthalene(3.10%),and a –Elemene(2.49%) .Compared with other kinds of Litchi,similar main components of Litchi aroma were found as alkenes,alcohols,esters and alkanes,while their composing and relative contents varied with the different kinds of Litchi.

Key concepts: Aroma, Chemistry, Limonene, Gas chromatography–mass spectrometry, Naphthalene, Myrcene, Organic chemistry, Chromatography

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