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. 2015 Oct;52(10):6475-83.
doi: 10.1007/s13197-014-1698-7. Epub 2015 Jan 20.

Radiations and biodegradation techniques for detoxifying Carica papaya seed oil for effective dietary and industrial use

Israel Sunmola Afolabi  1 , Tolulope Dorcas Bisi-Adeniyi  1 , Toluwalase Ronke Adedoyin  1 , Solomon Oladapo Rotimi  1
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Free PMC article

Radiations and biodegradation techniques for detoxifying Carica papaya seed oil for effective dietary and industrial use

Israel Sunmola Afolabi et al. J Food Sci Technol. 2015 Oct.
Free PMC article

Abstract

Benzyl isothiocyanate (BITC) is toxic in high concentration. The capacity of Aspergillus niger, microwave and ultraviolet radiations to reduce the BITC levels in Carica papaya Linn seed oil were assessed in vitro. BITC at different concentrations were periodically exposed to microwave and ultraviolet radiations for 30 min and 10 h, respectively; and to identify Aspergillus niger for 4 days. Microwave radiation significantly reduced (p < 0.05) BITC levels (0.0272, 0.0544, and 0.0816 μmol) to 12.19, 8.99 and 27.5 % respectively within 15 min. Ultraviolet radiation significantly reduced (p < 0.05) BITC levels at all the concentrations. A. niger significantly increased (p < 0.05) BITC degradation on days 2 and 4 at 0.816, 1.36 and 2.72 nmol. Glutathione activity was significantly increased (p < 0.05) while glutathione S-transferase activity significantly reduced (p < 0.05) at all concentrations on days 3 and 4 respectively. The three techniques are possible models for improving the dietary consumption of the oil.

Keywords: Aspergillus niger; Benzyl isothiocyanate; Carica papaya seed; Microwave; Ultraviolet light.

Figures

Fig. 1
Fig. 1
Effect of microwave radiations on benzyl isothiocyanate
Fig. 2
Fig. 2
Effect of ultraviolet radiations on benzyl isothiocyanate
Fig. 3
Fig. 3
Levels of benzyl isothiocyanate biotransformation to 1,3-benzodithiole-2-thione by A. niger
Fig. 4
Fig. 4
The effect of benzyl isothiocyanate on Glutathione S-Transferase activity in A. niger
Fig. 5
Fig. 5
The effect of benzyl isothiocyanate on glutathione concentration in A. niger
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