Differential Contribution of Jasmine Floral Volatiles to the Aroma of Scented Green Tea

Figure 1

OPLS-DA score plot (a) and corresponding loading plot (b) derived from the integrated volatile emission data sets of jasmine flowers (JF) and the infusions of scented (ST) and nonscented (NT) green teas. Data were derived from three independent biological replicates. Names of numbered compounds in panel (b) are outlined in Supplementary Table  1. and represent principal component 1 (volatile compounds). and represent principal component 2 (sample group). Equations R2X = 0.529 and R2X0 = 0.394 represent, respectively, the contributions of principal component 1 (R2X) and component 2 (R2X0) to the variation among the ST, NT, and JF. Compounds in the left two quadrants of panel (b) make a negative contribution to tea odor discrimination and compounds in the right two quadrants make a positive contribution. Criteria for selecting top volatiles of importance were in accordance with the SIMCA-P program where a VIP value more than 1 was considered as a positive contributor.

(a)

(b)