mold infection is one of the most important problems in aquaculture. recently, administration of some chemicals such as malachite green in order to control mold infections has been limited in aquaculture. in the current decade, researchers have been more focused on using herbal extracts and essential oils in aquaculture. in this study, minimum inhibitory concentration (mic) and minimum fungicid...

We evaluated bronopol as a practical alternative anti-fungal agent to malachite green for use in hatcheries. Repeated exposure everyday, just after fertilization to the stage of eggs showing eye development to 50 mg/L and 100 mg/L bronopol for 30 min showed an efficacy comparable to 0 mg/L (control) for the inhibition of fungal infection in rainbow trout (Oncorhynchus mykiss) eggs. The 100 mg/L...

This paper presents the feasibility of removal of basic dye malachite green from aqueous solutions by using a low cost AC-MnO2-NC. Batch adsorption experiments were carried out as a function of pH, contact time, initial concentration of the adsorbate, adsorbent dosage and temperature . Langmuir, Freundlich and Tempkin isotherms were also studied . Pseudo first order, Pseudo second order , intra...

Wavelength-tunable pulses from a synchronously pumped cavity-dumped dye laser were compressed by using an optical fiber. The resulting 250-fs pulses were used to study ground-state recovery in malachite green solutions. The coherent coupling artifact was removed from the data by an antisymmetrizing procedure, and the resultant signals were deconvoluted in the usual manner. The ground-state reco...

A simple and highly sensitive method is proposed for determination of trace amount of cerium. New method involves bleaching of greenish colour dye-malachite green, by the action of iodine, which is released by reaction between potassium iodide and cerium (IV) in acidic medium. Beer’s law is obeyed over concentration range of 0.6 to 4.6 μg cerium (IV) in final volume of 25 ml (0.024-0.184 ppm). ...

Three laccase isoenzymes (Lac1, Lac2 and Lac3) have been purified to homogeneity from Pleurotus nebrodensis in our previous study. Lac2 was shown to be the dominant isoform, capable of oxidizing the majority of laccase substrates and manifesting good thermostability and pH stability. Hence, Lac2 was selected to decolourize structurally different dyes and the colour removal efficiencies of Lac2 ...

introduction malachite green (mg) has been used as a food coloring agent, food additive, medical disinfectant as well as a dye in silk, wool, jute, leather, cotton, paper, and acrylic industries. it is also extensively used as a topical fungicide and ectoparasiticide in aquaculture industries throughout the world. the findings reveal that this dye has now become one of the most controversial co...