Nutritional Properties and Hydrolyzing Rates of Rice Grown with Biofilm Bio-Fertilizer (BFBF)

EasyChair Preprint 5692

Abstract

Rice (Oryza sativa) is the staple food for a larger proportion of the world population. Excessive chemical fertilizer (CF) usage in rice farming, especially urea is one of the causes of global warming and ground water pollution. Biofilm Biofertilizer (BFBF) has been developed as an envionmentally friendly alternative for reducing excessive CF usage in rice farming. This study compared the nutritional properties and hydrolyzing rates of the rice grown with BFBF and CF. Rice samples (BG 94/1) grown with six fertilizer treatments;different ratios of BFBF and CF (T₁-100% CF, T₂-80% CF, T₃-80% CF+BFBF, T₄-65% CF, T₅-65% CF+BFBF and T₆-control: normal soil) were analyzed. All the experiments were carried out in triplicates, and data were analyzed by using one-way ANOVA. Based on the results, moisture, ash, crude fat contents among the treatments varied from 10.2% (T₄) to 12% (T₁), 2.1% (T₁) to 5.1% (T₄), and 1.0% (T₁) to 2.7% (T₄), respectively. Protein content was in the range between 5.6% (T₂) to 7.3% (T₄). Available carbohydrate content varied between 68.3% (T₄) to 74.8% (T₁). The mineral profile of rice showed that no harmful trace elements exceeded the acceptable level. A significantly higher level of Zn was observed in T₅. Total dietary fibre (TDF) content ranged between 6.8 to 3.1g/100 g belonging to T₂ and T₁, respectively. Moreover, when the rice samples were hydrolyzed, the lowest maltose releasing rate was observed in T₄. The results of the present analysis revealed that rice grown with 65% CF+BFBF have satisfactory level of macro and micronutrient composition. Protein, TDF and zinc content in rice grown with 65% CF+BFBF treatment were significantly higher than those in the rice grown with 100% CF and the control sample.

Keyphrases: Biofilm Biofertilizers, Nutritional properties, Oryza sativa, chemical fertilizers, sustainable agriculture

@booklet{EasyChair:5692,
  author    = {Isuri Rathnayaka and Shanthi De Silva and Shehani Maheepala and Gamini Seneviratne and Ruvini Liyanage},
  title     = {Nutritional Properties and Hydrolyzing Rates of Rice Grown with Biofilm Bio-Fertilizer (BFBF)},
  howpublished = {EasyChair Preprint 5692},
  year      = {EasyChair, 2021}}