Figure 2: NMR measurements and (pseudo) two-dimensional mapping with
Clustering NMR approach. T1 and T2relaxation times were carried on various edible oils (i.e., peanut,
olive, sunflower, corn), with the label of (A, B, C, D) respectively
using micro NMR relaxometry. One-dimensional mapping with (a)
T1 relaxation time, (b) T2 relaxation
time, and (c) (pseudo) two-dimensional mapping using a pair of
(T1, T2) relaxation times. NMR
measurements were carried out on each edible oils in quintuplicate
manner with a total of 40 points (datasets). The clustering circles were
drawn for eye-balling purposes. Details of the oils (e.g.,
manufacturers, fat compositions) were presented in Supp. Fig. 1. The box
plots represent 25% and 75% quantile of the entire measurements. The
diaganol line (T1=T2) represents the
border limit where it is physically non-measurable. Two tailed Student“s
T-test was used to calculate the P -value.