Nutritional and oil characterization of Erythrina stricta Roxb. seeds: a potential resource for functional foods

Figures & data

Figure 1. Morphology of Erythrina stricta. A. Habit; B. Flowers; C. Mature pods; D. Seeds; E. Seed oil.

Table 1. Proximate and mineral composition of Erythrina stricta seeds.

Component	Composition
Proximate (%)
Moisture	15.39 ± 0.18
Fat	13.43 ± 0.50
Protein	26.81 ± 0.70
Carbohydrate	19.34 ± 2.41
Fiber	18.71 ± 1.21
Ash	6.04 ± 0.28
Energy (Kcal/100 g)	284.15
Macro elements (mg/g DW)
Nitrogen	16.60 ± 0.17
Phosphorous	6.47 ± 0.18
Potassium	14.00 ± 0.25
Sulphur	2.99 ± 0.07
Sodium	0.30 ± 0.03
Calcium	5.00 ± 0.06
Magnesium	6.00 ± 0.14
Microelements (µg/g DW)
Iron	787.00 ± 7.62
Copper	32.70 ± 1.01
Manganese	55.20 ± 2.15
Boron	36.80 ± 0.14
Zinc	497.00 ± 6.89

Each value represents the mean ± standard error of three replicates.

Figure 2. GC-MS chromatogram of fatty acid profiling of Erythrina stricta seed oil.

Table 2. Physicochemical properties and fatty acid profile of Erythrina stricta seed oil.

Parameter	Values
Physicochemical properties
Color at 25 °C	Greenish yellow
Physical state at 25 °C	Liquid
Density at 25 °C (mg/cm^3)	0.910 ± 0.03
Refractive index at 25 °C	1.471 ± 0.01
Free fatty acid content (%)	1.41 ± 0.11
Peroxide value (meq O2/kg)	19.91 ± 1.10
Iodine value (I2/100 g)	79.99 ± 0.60
Unsaponification value (%)	0.16 ± 0.02
Carotenoids (mg/kg)	36.18 ± 3.94
Lignans (mg/100 g SE)	165.47 ± 1.10
Fatty acid composition (%)
12-Methyltridecanoic acid (14Me-13:0)	0.53 ± 0.06
Palmitic acid (16:0)	20.63 ± 0.23
Stearic acid (18:0)	6.47 ± 0.12
Oleic acid (18:1)	48.82 ± 0.29
Linoleic acid (18:2)	20.27 ± 0.17
Linolenic acid (18:3)	0.81 ± 0.06
Behenic acid (20:0)	1.48 ± 0.09
Paullinic acid (20:1)	1.00 ± 0.06
Total SFA	29.11
Total MUFA	49.82
Total PUFA	21.08

Each value represents the mean ± standard error of three replicates

SE: Sesamol equivalent; SFA: saturated fatty acids; MUFA: monounsaturated fatty acids; PUFA: polyunsaturated fatty acids

Table 3. Anti-nutritional factors of Erythrina stricta seeds.

Factor	Composition (mg/g FW)
Phytate	26.85 ± 3.30
Oxalate	16.04 ± 3.07

Each value represents the mean ± standard error of three replicates.

Data availability statement

Data and materials supporting the results or analyses ­presented in our paper are available upon reasonable request.