Analysis of volatile compounds of black bean, mung bean, and soybean extracts prepared with distillation under reduced pressure–continuous liquid–liquid extraction and hot water extraction

Han, Eunji; Ahn, Hyunwoo; Lee, Seongho; Lee, Kwang-Geun

doi:10.1186/s40538-022-00369-1

Chemical and Biological Technologies in Agriculture

Table 2 Concentrations of volatile compounds identified in mung bean (Vigna radiata L.) extracts with DRP–LLE

From: Analysis of volatile compounds of black bean, mung bean, and soybean extracts prepared with distillation under reduced pressure–continuous liquid–liquid extraction and hot water extraction

Compounds	KI	KI (Ref.)	Identification	Peak area ratio¹
				Distillation at 50 °C			Distillation at 60 °C			Distillation at 70 °C
				355–500 μm	500–710 μm	Whole size	355–500 μm	500–710 μm	Whole size	355–500 μm	500–710 μm	Whole size
Aldehydes
Octanal	1282	1264	MS², KI³, Co⁴	0.020 ± 0.001^a,A	N.D	0.016 ± 0.002^a,B	0.006 ± 0.001^b,A	0.015 ± 0.001^a,BC	0.015 ± 0.001^ab,BC	N.D	0.019 ± 0.002^b,A	0.014 ± 0.002^b,B
Nonanal	1401	1395	MS, KI, Co	0.418 ± 0.025^a,A	0.123 ± 0.007^a,B	0.255 ± 0.028^a,C	0.361 ± 0.045^ab,AB	0.283 ± 0.014^b,C	0.302 ± 0.032^ab,AC	0.163 ± 0.079^c,A	0.279 ± 0.023^b,B	0.260 ± 0.028^a,B
Benzaldehyde	1539	1527	MS, KI, Co	0.292 ± 0.018^a,A	0.335 ± 0.017^a,A	0.219 ± 0.024^a,A	0.252 ± 0.031^a,A	0.694 ± 0.035^b,B	0.215 ± 0.023^a,A	0.428 ± 0.108^ab,AB	0.256 ± 0.022^a,A	4.666 ± 0.122^b,C
Total aldehydes				0.507 ± 0.031	0.525 ± 0.026	0.324 ± 0.035	0.406 ± 0.051	0.990 ± 0.050	0.319 ± 0.034	0.577 ± 0.144	0.429 ± 0.036	4.501 ± 0.484
Alcohols
2-Methyl-1-butanol	1205	1208	MS, KI, Co	4.529 ± 0.273^a,A	4.957 ± 0.253^a,A	1.242 ± 0.134^a,B	3.668 ± 0.453^b,A	6.140 ± 0.313^b,B	1.254 ± 0.135^a,C	1.138 ± 0.065^c,A	4.037 ± 0.333^c,A	0.842 ± 0.090^a,A
1-Pentanol	1235	1212	MS, KI, Co	0.433 ± 0.026^a,A	0.447 ± 0.023^a,A	0.223 ± 0.025^a,B	0.322 ± 0.040^b,A	0.615 ± 0.031^b,B	0.247 ± 0.027^a,C	0.217 ± 0.097^c,A	0.343 ± 0.032^c,A	0.232 ± 0.025^a,A
1-Hexanol	1377	1360	MS, KI, Co	1.467 ± 0.088^a,A	1.084 ± 0.055^a,B	0.678 ± 0.073^a,C	1.049 ± 0.129^b,A	1.644 ± 0.084^b,B	0.680 ± 0.073^a,C	0.250 ± 0.030^c,A	0.873 ± 0.073^c,B	0.483 ± 0.052^b,C
1-Octanol	1577	1563	MS, KI, Co	0.195 ± 0.012^a,A	0.190 ± 0.009^a,A	0.089 ± 0.010^a,B	0.148 ± 0.019^b,A	0.281 ± 0.014^b,B	0.089 ± 0.010^a,C	0.149 ± 0.037^b,A	0.150 ± 0.013^c,A	0.090 ± 0.010^a,B
1-Nonanol	1714	1724	MS, KI, Co	0.432 ± 0.026^a,A	0.384 ± 0.020^a,B	0.173 ± 0.019^a,C	0.224 ± 0.028^b,A	0.594 ± 0.030^b,B	0.172 ± 0.019^a,C	0.224 ± 0.0450^b,A	0.293 ± 0.025^c,B	0.159 ± 0.017^a,C
Benzyl alcohol	1900	1880	MS, KI, Co	1.120 ± 0.067^a,A	2.168 ± 0.111^a,B	0.966 ± 0.104^ab,AC	0.466 ± 0.057^b,A	3.170 ± 0.161^b,B	1.114 ± 0.120^b,C	0.299 ± 0.097^b,A	1.112 ± 0.093^c,B	0.798 ± 0.086^a,C
Phenethyl alcohol	1930	1929	MS, KI, Co	1.010 ± 0.061^a,A	2.399 ± 0.122^a,B	1.150 ± 0.124^a,A	0.199 ± 0.025^b,A	2.604 ± 0.135^b,B	1.148 ± 0.124^a,C	N.D	0.835 ± 0.070^c,A	0.438 ± 0.048^b,B
Total alcohols				9.184 ± 0.553	11.628 ± 0.592	4.527 ± 0.487	6.076 ± 0.750	15.048 ± 0.768	4.705 ± 0.507	2.277 ± 0.096	7.643 ± 0.638	3.041 ± 0.328
Total volatiles				9.915 ± 0.597^a,A	12.093 ± 0.616^a,B	5.017 ± 0.540^a,C	6.695 ± 0.827^b,A	16.039 ± 0.818^b,B	5.237 ± 0.564^a,C	2.869 ± 0.242^c,A	8.201 ± 0.684^c,B	7.712 ± 0.831^b,BC

¹All concentration values are presented as mean ± standard deviation. ²MS, identification of mass spectrum with reference to the NIST mass spectrum library, ³Kovats retention index on DB-WAX; KI (Ref), Retention index on DB-WAX in the NIST database.), ⁴Co-injection with authentic chemicals Mean values with different letters (a, b, c—extraction temperature/A, B, C—particle size) in the same horizontal line indicate significant differences according to Duncan’s test (p < 0.05). N.D.: not detected

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