Characterization of difference in muscle volatile compounds between triploid and diploid crucian carp
Cai, Li | Ao, Zhipeng | Tang, Tao | Tong, Fangle | Wei, Zehong | Yang, Fuzhong | Shu, Yuqing | Liu, Shaojun | Mai, Kangsen
The present study was conducted to investigate the volatile compounds profile of raw muscle between diploid (2n = 100) and triploid crucian carp (produced by hybridization from mating diploid crucian carp to allotetraploid, 3n = 150) cultured under the same conditions. Volatile compounds of crucian carp between ploidy were qualitatively analyzed by headspace solid-phase microextraction and gas chromatography-tandem mass spectrometry (HS-SPME-GC/MS). A total of 52 volatiles were identified in the two groups of crucian carp including 5 alcohols, 5 aromatics, 8 aldehydes, 1 ketone, 10 alkanes, 19 alkenes and 4 esters. No significant difference was observed in the total relative concentration between the two groups (P > 0.05). Based on the data of odor-active value (OAV ≥ 1), 10 odor-active compounds may mainly contribute to the overall odor, including 1-nonanol, 1-octen-3-ol, hexanal, decanal, octanal, 1-nonanal, p-cymene, styrene, limonene and tridecane. Triploid crucian carp had more odor-active compounds and higher total OAV value than that of diploid (P < 0.05). With the results of partial least squares discrimination analysis (PLS-DA) in total volatiles and odor-active compounds, the overall odor of triploid and diploid crucian carp was obviously different.
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