Analysis of aroma volatiles in flowers of four camellia varieties
YANG Min, XIE Yan-feng, XU Lin, XIANG Cong-lin, FU Shao, CHEN Bao-lin, WEI Ming, CHEN Xiao-gui, LI Qing-yuan
2023, 62(7):
137-142.
doi:10.14088/j.cnki.issn0439-8114.2023.07.024
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Four fragrant camellia varieties, namely C37 （Camellia japonica C37）, Sweet Emily Kate （Camellia japonica Sweet Emily Kate）, Hime （Camellia lutchuensis Hime）, and Liexiang （Camellia japonica Liexiang）, were used as materials to analyze the volatiles components and relative content of the flowers of these four camellia varieties during their blooming period using headspace solid-phase microextraction gas chromatography （SPME/GC-MS） technology. The results showed that aroma volatiles compounds were detected in C37, Sweet Emily Kate, Hime, and Liexiang, with 27, 10, 19, and 27 types, mainly including alcohols, esters, aldehydes, aromatic compounds, phenols, ethers, terpenoids, ketones, alkanes, and fatty acids. N-hexanol, Benzaldehyde, Benzyl alcohol, Phenylacetaldehyde, Methyl benzoate, Phenethyl alcohol, Naphthalene, and Methyl salicylate were the main volatiles components of the four camellia varieties. These compounds accounted for 86.84%, 90.32%, 93.81%, and 82.20% of the total volatiles content of C37, Sweet Emily Kate, Hime, and Liexiang, respectively. Benzene ring compounds were the main floral components. The relative content of Methyl benzoate in C37 and Hime was the highest, 39.37% and 42.00%, respectively; the relative content of Phenethyl alcohol （31.60%） in Liexiang was the highest; N-hexanol （70.22%） was the main volatiles compound of Sweet Emily Kate.The relative content of esters and alcohols in the flowers of four camellia varieties was much higher than that of other compounds, making them the main volatiles of camellia.
