Effect of zinc fortification on the vitamin, mineral, and amino acid composition of <i>Pleurotus ostreatus</i> cultivated on different wood substrate

Olubunmi Olatomiwa Ariyo; Victor Olusegun Oyetayo; Olubunmi Olatomiwa Ariyo; Victor Olusegun Oyetayo

doi:10.48130/sif-0026-0004

Figures (1) Tables (2)

Figure 1.
Vitamin A and C content (mg/100 g) of cultivated mineral fortified, and non-mineral fortified P. ostreatus. A, P. ostreatus cultivated on wood substrate (Canarium sp.) without fortification. B, P. ostreatus cultivated on wood substrate (Canarium sp.) fortified with zinc. C, P. ostreatus cultivated on wood substrate (Ceiba pentandra) without fortification, D, P. ostreatus cultivated on wood substrate (Ceiba pentandra) fortified with zinc. E, P. ostreatus cultivated on wood substrate (Pycnanthus angolensis) without fortification. F, P. ostreatus cultivated on wood substrate (Pycnanthus angolensis) fortified with zinc.

Minerals	A	B	C	D	E	F
Fe	0.33 ± 0.06^ab	0.39 ± 0.05^b	0.28 ± 0.05^a	0.34 ± 0.03^ab	0.34 ± 0.04^ab	0.40 ± 0.04^b
Cu	0.15 ± 0.00^a	0.19 ± 0.01^b	0.73 ± 0.03^d	0.19 ± 0.00^b	0.25 ± 0.03^c	0.24 ± 0.00^c
Zn	0.56 ± 0.04^a	1.07 ± 0.04^c	0.73 ± 0.04^b	1.72 ± 0.02^d	0.74 ± 0.05^b	1.95 ± 0.05^e
Ca	0.13 ± 0.00^b	0.07 ± 0.01^a	0.28 ± 0.01^d	0.25 ± 0.02^c	0.45 ± 0.01^f	0.32 ± 0.02^e
Mn	0.02 ± 0.00^d	0.02 ± 0.00^d	0.01 ± 0.00^b	0.01 ± 0.00^c	0.00 ± 0.00^a	0.00 ± 0.00^a
Ni	0.26 ± 0.00^b	0.13 ± 0.00^a	0.30 ± 0.00^c	0.14 ± 0.00^a	0.44 ± 0.00^e	0.33 ± 0.01^d
Mg	1.40 ± 0.01^d	1.42 ± 0.01^e	1.37 ± 0.02^b	1.41 ± 0.01^de	1.43 ± 0.00^e	1.40 ± 0.00^d
K	714.03 ± 8.82^f	717.50 ± 5.07^f	507.82 ± 3.28^b	466.52 ± 10.17^a	539.96 ± 10.59^c	580.33 ± 12.66^d
Na	11.65 ± 0.38^de	11.34 ± 0.37^cd	11.33 ± 0.32^cd	10.83 ± 0.06^ab	11.89 ± 0.12^e	10.59 ± 0.33^a
P	11.84 ± 0.12^abc	14.67 ± 0.28^d	11.44 ± 0.28^abc	10.93 ± 0.08^ab	10.33 ± 0.19^a	10.32 ± 0.32^a
Values are means of triplicate ± SD. Samples carrying the same superscripts in the same row are not significantly different at (p > 0.05). A, P. ostreatus cultivated on wood substrate (Canarium sp.) without fortification. B, P. ostreatus cultivated on wood substrate (Canarium sp.) fortified with zinc. C, P. ostreatus cultivated on wood substrate (Ceiba pentandra) without fortification. D, P. ostreatus cultivated on wood substrate (Ceiba pentandra) fortified with zinc. E, P. ostreatus cultivated on wood substrate (Pycnanthus angolensis) without fortification. F, P. ostreatus cultivated on wood substrate (Pycnanthus angolensis) fortified with zinc.

Table 1.

Mineral composition (mg/100 g) of cultivated mineral fortified and non-mineral fortified P. ostreatus.

Amino acid	A	B	C	D	E	F
Alanine	3.56 ± 0.09^a	3.54 ± 0.02^a	3.56 ± 0.03^a	3.59 ± 0.01^a	3.76 ± 0.03^b	3.82 ± 0.03^c
Arginine	5.04 ± 0.02^b	5.04 ± 0.02^b	5.75 ± 0.02^b	5.79 ± 0.02^b	6.30 ± 0.02^c	6.35 ± 0.02^c
Aspartic acid	3.82 ± 0.02^a	3.93 ± 0.03^a	4.10 ± 0.02a^b	4.30 ± 0.01^b	4.32 ± 0.03^b	4.98 ± 0.03^c
Cystine	0.47 ± 0.02^a	0.49 ± 0.01^a	0.54 ± 0.02b	0.57 ± 0.02^b	0.54 ± 0.01^b	0.57 ± 0.02^b
Glutamic acid	9.09 ± 0.02^a	9.30 ± 0.03^ab	9.94 ± 0.01^b	9.96 ± 0.01^b	10.40 ± 0.20^c	11.17 ± 0.03^d
Glycine	0.44 ± 0.02^a	0.48 ± 0.02^a	1.54 ± 0.03^b	1.56 ± 0.01^b	1.64 ± 0.02^c	1.70 ± 0.01^d
Histidine	1.05 ± 0.02^a	1.05 ± 0.00^a	1.13 ± 0.03^b	1.12 ± 0.01^b	1.12 ± 0.03^b	1.17 ± 0.02^b
Isoleucine	1.12 ± 0.03^a	1.31 ± 0.03^a	1.21 ± 0.02^b	1.24 ± 0.02^b	1.24 ± 0.02^b	1.55 ± 0.01^c
Leucine	1.77 ± 0.02^a	1.97 ± 0.02^a	2.19 ± 0.02^b	2.32 ± 0.01^b	2.33 ± 0.02^b	2.70 ± 0.02^b
Lysine	1.42 ± 0.02^a	1.83 ± 0.01^c	1.44 ± 0.02^a	1.59 ± 0.01^b	1.48 ± 0.02^a	1.83 ± 0.02^c
Methionine	0.48 ± 0.01^b	0.48 ± 0.01^b	0.44 ± 0.02^a	0.47 ± 0.02^b	0.55 ± 0.02^c	0.59 ± 0.02^d
Phenylalanine	1.28 ± 0.02^a	1.35 ± 0.03^b	1.45 ± 0.01^c	1.46 ± 0.02^d	1.28 ± 0.02^a	1.31 ± 0.03^b
Proline	0.44 ± 0.02^a	0.48 ± 0.01^b	0.45 ± 0.03^a	0.47 ± 0.02^b	0.44 ± 0.01^a	0.48 ± 0.02^b
Serine	1.96 ± 0.02^a	1.99 ± 0.00^b	2.06 ± 0.02^b	2.08 ± 0.02^b	2.12 ± 0.02^c	2.19 ± 0.03^d
Threonine	2.10 ± 0.02^a	2.11 ± 0.01^a	2.27 ± 0.03^b	2.31 ± 0.02^c	2.30 ± 0.03^c	2.33 ± 0.01^a
Tyrosine	0.84 ± 0.03^b	0.82 ± 0.02^a	0.99 ± 0.02^c	1.00 ± 0.02^d	1.15 ± 0.02^e	1.20 ± 0.02^e
Valine	1.44 ± 0.02^a	1.44 ± 0.02^a	1.62 ± 0.02^b	1.63 ± 0.01^b	1.62 ± 0.02^b	1.69 ± 0.01^c
Values are means of triplicate ± SD. Samples carrying the same superscripts in the same row are not significantly different at (p > 0.05). A, P. ostreatus cultivated on wood substrate (Canariumsp) without fortification. B, P. ostreatus cultivated on wood substrate (Canariumsp) fortified with zinc. C, P. ostreatus cultivated on wood substrate (Ceiba pentandra) without fortification. D, P. ostreatus cultivated on wood substrate (Ceiba pentandra) fortified with zinc. E, P. ostreatus cultivated on wood substrate (Pycnanthus angolensis) without fortification. F, P. ostreatus cultivated on wood substrate (Pycnanthus angolensis) fortified with zinc.

Table 2.

Amino acid composition (g/100.g) of cultivated mineral fortified and non-mineral fortified P. ostreatus.