Abstract
Nutmeg, Myristica fragrans is used as a spice or medicinal plant to manage ailments. This study evaluated the nutritional and safety assessment of an aqueous extract of Myristica fragrans in Wistar rats. Thirty male Wistar rats weighing 180 - 240 g were randomly distributed into five groups: Control received distilled water, while 100, 200, 300, and 400 mg/kg body weight represented the treatment groups, respectively. The extract was orally administered to the animals for 28 days and then euthanized under anesthesia. Blood, serum, and liver homogenates from rats were used for biochemical analysis. The phytate and tannin contents were 0.38 mg/100 g and 0.15 mg/100 g, respectively. The calculated phytic acid to zinc ratio was 0.12. The respective percentage proximate components of the extract include moisture, ash, fat, protein, and carbohydrates: 10.61%, 45.42%, 5.95%, 1.81%, 13.78%, and 22.43%, respectively. Sodium, potassium, calcium, iron, magnesium, zinc, manganese, and lead were present in the extract. There was a significant increase (p<0.05) in serum aspartate aminotransferase (AST), alanine aminotransferase (ALT), and acid phosphatase (ALP) activity in the groups treated with the extract compared to the control groups. Similarly, there was a significant increase (p<0.05) in serum total bilirubin and albumin concentrations in the extract treatment groups compared to control groups. On the contrary, there was a significant decrease (p<0.05) in the liver AST and ALP activity in the treatment groups compared to the control. The liver total protein and albumin concentrations showed a significant decrease (p<0.05) in the extract treatment groups compared to the control. There was a significant decrease (p<0.05) in the pack cell volume (PCV), haemoglobin (Hb), red blood cell (RBC), Mean cell volume (MCV), and platelet (PLT) levels in the animals in the extract treatment groups compared to the control group. Myristica fragrans is abundant in essential nutrients crucial for maintaining optimal physiological functions within the body, however, it is important to avoid excessive dosage or prolonged consumption which might be toxic to liver cells. Key words: Myristica, animals, tannins, phytic acid, chemical and drug Induced liver injury, minerals
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