Exposure of cherry radish (Raphanus sativus L. var. Radculus Pers) to iron-based nanoparticles enhances its nutritional quality by trigging the essential elements

摘要

Iron (Fe) deficiency is a pervasive nutritional disorder, and producing vegetables enriched with Fe as a dietary source is imperative. Herein, Fe3O4, FeO(OH), alpha-Fe2O3, beta-Fe2O3, gamma-Fe3O4, and nZVI nanoparticles (NPs) were applied in soil as fertilizer to enhance the Fe nutrition in cherry radish. The highest enhancement of Fe content (58%) was observed in Fe3O4 treatment at 100 mg kg- 1, followed by FeO(OH) (49%), alpha-Fe2O3 (24%), nZVI (14%), beta-Fe2O3 (13%) and gamma-Fe3O4 (4%). The daily intake of Fe was 97-104% and 77-91% with Fe3O4 and FeO (OH) at 100-200 mg kg- 1, respectively. Moreover, the zinc, vitamin C and crude protein contents were also increased by 37, 48 and 67% under Fe3O4 treatment as compared to control. Fe3O4 at 100 mg kg- 1 also increased the essential amino acids (phenylalanine, leucine and isoleucine) contents by 11-14%. These data suggest that Fe3O4 and FeO(OH) NPs could be effective nanofertilizers to enhance Fe nutrition in plants.

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