Nik Noriman Zulkepli
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Preferred name
Nik Noriman Zulkepli
Official Name
Nik Noriman , Zulkepli
Alternative Name
Zulkepli, N. N.
Noriman, Nik Zulkepli
Noriman, N. Z.
Zulkepli, Nik N.
Zulkepli, Nik Noriman
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Scopus Author ID
55898485400
Researcher ID
J-6410-2015

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Publication

Bioprotein optimization from spent mushroom substrate for fish feed application

2020 , Nuradibah Mohd Amer , Z. Masyitah , Sam Sung Ting , Khairul Farihan Kasim , Nik Noriman Zulkepli , Omar S. Dahham , Saad S. Dahham

The utilization of spent mushroom substrate as potential substrate for bioprotein production is being explored in this study. The objectives of this study were to screen three different types of fungi in bioprotein production from spent mushroom substrate and to optimize the process condition of the best fungi for production of bioprotein by using Design Expert Software. In this present study, screening of three different strains; Aspergillus terreus UniMAP AA-1, Aspergillus niger (ATCC 16404) and Phanerochaete chrysosporium (ATCC 24725), was done for bioprotein production by solid state fermentation process. P. chrysosporium produced the highest amount of protein on the sixth day, with the amount of 0.3951 mg/mL. Optimization of two parameters; substrate concentration and inoculum size for the selected fungi, P. chrysosporium was done conducted by Response Surface Methodology (RSM): Central Composite Design (CCD) to investigate optimal condition of bioprotein production. The optimum condition for P. chrysosporium to produce bioprotein using SMS was achieved at 60% of substrate concentration and 15% (w/v) of inoculum size with maximum protein concentration of 0.3812 mg/mL.

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UV-visible performance of urea beads coated with banana peels bioplastic and epoxidized natural rubber

2020 , S. A. Abdul Shukor , Rosniza Hamzah , Nik Noriman Zulkepli , Omar S. Dahham , N. A. Faris , Saad S. Dahham , Haliza Jaya

This study describes UV-Visible (UV-Vis) performance of urea beads coated with banana peels bioplastics and epoxidized natural rubber (ENR-50). Both banana peels bioplastics and ENR-50 were used as coating materials to the urea beads. Three different type of salts which are NaCl, MgCl2 and MgSO4 with different concentrations was added to this coating materials to produce pores and later modify the release rate of urea. UV-Vis spectroscopy techniques was applied to study the performance of urea release rate. The results of 30 days release study indicate the performance of coating materials is depend on types and its salts concentration. The addition of 5 wt% of MgSO4 salt recorded lowest urea concentration at 3 mg/mL, followed by 15 wt% of NaCl at 4.4 mg/mL and 5 wt% of MgCl2 at 9 mg/mL respectively.

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Preparation coated of urea beads from banana peel bioplastic and epoxidized natural rubber 50

2020 , H. K. Abdulkadir , S. A. Abdul Shukor , Rosniza Hamzah , Nik Noriman Zulkepli , Omar S. Dahham , Saad S. Dahham , N. A. Faris

This study produce coated urea beads with both banana peels bioplastics and epoxidized natural rubber 50 (ENR-50). In order to form small and homogenous pores of the coating materials, three types of different salt composites such as NaCl, MgCl2 and MgSO4 were used separately. The study between three different loadings for each salt were investigated. The interaction between salts and the both coating materials were investigated via Fourier transform infrared spectroscopy (FTIR) technique. FTIR spectra showed the peaks of the samples and it determined the functional groups present in the samples. ENR-50 was detected at peak 876 cm-1 while the CH3 reading show at peak 1472 cm-1. However, the peak was overlap at 1470 cm-1. Banana peel contain high amount of starch and it can increase the absorbance reading. Thus, it helps increase the nutrient taken up by the plants.

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