In vitro mineral nutrition of Curcuma longa L. affects production of volatile compounds in rhizomes after transfer to the greenhouse

Table 1 Compounds identified in the hexane extract of Curcuma longa L. 35–1 rhizomes by GC-MS

	Compound	Rt (min)	Molecular formula	Molecular weight	Control peak area%	Low-input peak area%	High-input peak area%
1	β-elemene	20.83	C₁₅H₂₄	204	0.85 ± 0.14	0.33 ± 0.04	1.96 ± 0.40
2	Germacrene D	23.57	C₁₅H₂₄	204	0.16 ± 0.06	0.07 ± 0.01	0.57 ± 0.16
3	Germacrene A	24.3	C₁₅H₂₄	204	0.14 ± 0.04	0.14 ± 0.2	0.36 ± 0.08
4	Germacrene B	25.81	C₁₅H₂₄	204	0.12 ± 0.01	0.10 ± 0.02	0.45 ± 0.13
5	β-elemenone	27.33	C₁₅H₂₂O	218	0.88 ± 0.04	1.04 ± 0.23	1.65 ± 0.14
6	Isocurcumenol	27.97	C₁₅H₂₂O₂	234	3.24 ± 0.14	2.78 ± 0.33	3.21 ± 0.20
7	Germacrone	29.81	C₁₅H₂₂O	218	4.46 ± 1.51	6.14 ± 1.26	9.64 ± 0.72
8	Neocurdione	30.42	C₁₅H₂₄O₂	236	1.48 ± 0.10	1.08 ± 0.28	1.42 ± 0.14
9	Curcumenone	30.85	C₁₅H₂₂O₂	234	2.10 ± 0.22	3.37 ± 0.73	2.16 ± 0.40
10	Curcumenol isomer I	32.39	C₁₅H₂₂O₂	234	28.68 ± 0.9	25.94 ± 2.8	29.56 ± 2.0
11	Curcumenol isomer II	33.75	C₁₅H₂₂O₂	234	17.96 ± 0.7	22.56 ± 3.2	21.82 ± 2.9
12	Methenolone	40.14	C₂₀H₃₀O₂	302	20.95 ± 0.5	19.36 ± 5.3	8.56 ± 2.75
12	Total	40.14	C₂₀H₃₀O₂	302	81.01 ± 1.4	82.93 ± 3.6	81.36 ± 3.6

The volatile content in turmeric rhizomes of the control and the fertilizer treatments using GC-MS analysis. Percentages were measured based on peak area of each compound to total peak area of the GC chromatogram ± standard deviation (n = 3)

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