Evaluation of Proximate, Sugar and Fatty Acids Compositions of African Walnut (Plukenetia conophora Mull. Arg.) Root Bark

Figures & data

Figure 1. GPS of the sampling area (AJawa, Ogooluwa LG Ogbomoso Nigeria)

Table 1. Proximate composition of the P. conophora root bark

Parameter	% Composition
Moisture Ash Crude fiber Crude fat Crude protein Carbohydrate	71.70 ± 0.01 2.84 ± 0.02 18.80 ± 0.01 1.34 ± 0.01 3.42 ± 0.01 1.70 ± 0.02

Values are mean of triplicate determination(±SD).

Table 2. Fatty acids profiles of the Plukenetia conophora root bark using spectrophotometric method

Type of Fatty acid	Fatty acid	Carbon and bond	Root bark oil (%)
Saturated fatty acid	Caproic acid Caprylic acid Capric acid Lauric acid Myristic acid Palmitic acid Stearic acid Behenic acid Lignoceric acid	6:0 8:0 10:0 12:0 14:0 16:0 18:0 22:0 24:0	0.40 1.41 1.55 1.18 1.59 3.36 4.10 0.00 0.00
Monounsaturated fatty acids (MUFA)	Palmitoleic Oleic acid Erucic acid	16:1 18:1 22:1	0.51 33.88 0.05
Polyunsaturated fatty acids (PUFA)	Linoleic acid Linolenic acid Arachidonic (Omega 6)	18.2 18.3 20.4	0.02 35.57 0.05

Table 3. Quantity of Vitamin E in the Plukenetia conophora root bark

Vitamin	Content(µg/100 g)
Tocopherol(E)	0.64 ± 0.01

Values are mean of triplicate determination (±SD).

Table 4. Levels of sugar content in the Plukenetia conophora root bark

Parameter	Content (%)
Galactose	ND
Glucose	3.28 ± 0.2
Fructose	ND
Maltose	0.86 ± 0.02
Sucrose	4.37 ± 0.02

Values are mean of triplicate determination (±SD).

Plate 1. Plukenetia conophora plant climbing a kolanut tree displaying the stem

Plate 2. Plukenetia conophora root bark cut into smaller pieces. Source: Ayoola et.al .2015