Ameliorative role of nano-ceria against amine coated Ag-NP induced toxicity in Labeo rohita

Sauce was produced from Rohu (Labeo rohita) by enzymatic and fermentatively under conditions optimized by response surface method. Salt (20% w/w) and commercial papain (3% w/w) were employed for enzymatic production; while, salt (25%, w/w), sugar (7.5%, w/w) and lactic culture (10%, w/v; Pediococcus pentosaceus FSBP4-40) were used in case of fermentative production. Total antioxidant activity (as ascorbic acid, µg/ml), 2,2`-diphenyl-1-picryl-hydrazyl (DPPH, %) and 2,2`- azinobis-3-ethylbenzothizoline-6 sulphonate (ABTS; %) scavenging activities of fermented sauce samples were higher at 3441±60, 49.57±1.7 and 99.0±0.3, respectively; as compared to enzyme treated samples which showed 803±13, 28.60±1.1 and 78.4±1.0, for the respective parameters, after 180 days storage at 37°C. Superoxide anion scavenging activity and reducing potential were found significantly higher (P<0.05) in both fermented as well as enzymatically prepared sauces in comparison to control. Fermented sauce exhibited excellent antibacterial property against Listeria monocytogenes ScottA. Bacterial counts such as total plate count and halophile count, after 180 days, were significantly lower (P<0.05) in the fermentatively produced sauce than enzymatically prepared sauce. Pediococcus, Micrococcus, Enterococcus and Staphylococcus were the dominant bacterial genera in fermented sauce. The study emphasizes the role of accelerating fermentation process, either enzymatically or fermentatively, to produce biofunctionally and bacteriologically superior rohu sauce.

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Role of micro and macronutrients enrich fertilizers on the growth performance of prawn (Macrobrachium rosenbergii), rohu (Labeo rohita) and mola (Amblypharyngodon mola) in a polyculture system

International Journal of Agricultural Research Innovation and Technology ◽

10.3329/ijarit.v8i2.40555 ◽

2018 ◽

Vol 8 (2) ◽

pp. 47-53

Author(s):

MM Rahman ◽

S Sultana ◽

M Kabiraj ◽

M Das

Keyword(s):

Growth Performance ◽

Labeo Rohita ◽

Survival Rates ◽

Macrobrachium Rosenbergii ◽

Quality Parameters ◽

Mean Value ◽

Control Treatment ◽

Significant Difference ◽

Level Of Significance

A six month’s experiment was carried out in earthen ponds to evaluate the effect of micro and macro nutrients on the growth performance of Prawn (Macrobrachium rosenbergii), Rohu (Labeo rohita) and Mola (Amblypharyngodon mola) in a polyculture system during July to December 2017. The trial was conducted into two different treatments and one control each with three replications. In treatment-1, macronutrients enrich fertilizers like urea, TSP and molasses-yeast mixture were applied at the rate of 2.45, 2.45, and 3.09 (g m-2 week-1), whereas in treatment-2 micronutrients composition mixer applied at the rate of 4.50 g m-2 week-1 while no micro and macronutrients were applied in control. The mean value of all water quality parameters showed no significant differences among control and two treatments when One-way ANOVA was performed except hardness. The average final mean individual weights of prawn, rohu and mola in control, treatment-1 and treatment-2 were 22.10, 24.35, and 24.70 g; 141.10, 190.60 and 182.20 g; 3.36, 3.67 and 3.73 g, respectively. The survival rates of various species namely prawn, rohu and mola in control, treatment-1 and treatment-2 were 73.33, 89.58 and 86.25%; 78.00, 74.00 and 74.00%; 10.67, 15.33 and 15.33%, respectively. There was no significant difference in the survival rates of prawn, rohu and mola among control and treatments. Production after six months of culture was 351.8, 461.5 and 445.3 kg ha-1 in control, treatment-1 and treatment-2, respectively which were significantly different at 5% level of significance. Int. J. Agril. Res. Innov. & Tech. 8 (2): 47-53, December, 2018

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