Dietary incorporation of jojoba extract eliminates oxidative damage in livers of rats fed fumonisin-contaminated diet

Abstract

Aim: This study aimed to determine the composition of ethanol extract of jojoba seeds, and to evaluate its hepatoprotective effects in rats fed fumonisin B₁ (FB₁)-contaminated diet.

Methods: Jojoba seeds were extracted in 95% ethanol, and the chemical composition was determined. Male rats were divided into six groups and treated for 8 weeks as follows: (1) Untreated control; (2) FB₁-contaminated diet (80 mg/kg diet); (3) low dose (0.5 mg/kg b.w.) jojoba extract; (4) high dose (1.0 mg/kg b.w.) jojoba extract; (5) low dose jojoba extract plus FB₁; and (6) high dose jojoba extract plus FB₁. Blood and liver samples were collected for different biochemical analyses and histological examinations.

Results: The results indicated that the ethanolic extract of jojoba is rich in protein, phenolic compounds, phytic acid, and considerable amounts of simmondsin. Animals fed FB₁-contaminated diet showed severe biochemical and histological changes typical to those reported in literature. Treatment with jojoba seed extract alone at the two tested doses did not induce significant alterations in all parameters tested. Combined treatment of jojoba seed extract with FB₁ eliminated hepatotoxicity induced by FB₁, especially at low dose of jojoba seed extract.

Conclusion: The authors concluded that jojoba seed extract can be incorporated in FB₁-contaminated feed to eliminate FB₁-induced hepatotoxicity.

Keywords

Fumonisin B₁ / health hazards / jojoba seed / liver / mycotoxins / oxidative stress

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