Noor Hasyierah Mohd Salleh
Thumbnail Image
Preferred name
Noor Hasyierah Mohd Salleh
Official Name
Noor Hasyierah, Mohd Salleh
Alternative Name
Salleh, N. H.M.
Salleh, N. H.Mohd
Mohd Salleh, N. H.
Mohd Salleh, Noor Hasyierah
Main Affiliation
Scopus Author ID
41762655600

Research Output

Filters

5 1
1
5
Reset filters

Settings
Now showing 1 - 5 of 5
  • Publication
    Inhibition of Aspergillus flavus by Momordica charantia Ethanolic Leaves Extract for Mushroom Protection
    ( 2023-06-09)
    Noor Hasyierah Mohd Salleh
    ;
    Zulkarnay Zakaria
    ;
    Aziz N.H.
    ;
    Ahmad Anas Nagoor Gunny
    ;
    Alina Rahayu Mohamed
    ;
    Munusamy T.
    Pleurotus ostreatus, better known as oyster mushroom is one of the world’s widely cultivated mushroom. Infection from pathogenic fungi is one of the major reasons causing losses of mushroom during cultivation. The objective of this study is to investigate the antifungal property of Momordica charantia leaves extract against Aspergillus flavus for mushroom protection. The inhibitory effect of M. charantia leaves extract against A. flavus isolated from infected P. ostreatus mushroom bag was investigated using pour plate technique. Inhibition of A. flavus mycelial growth was the highest at extract concentration of 9.64 v/v %, temperature 26℃ and incubation time of 96 hours with inhibitory value of 70.58 ± 0.00 %, 78.4 ± 0.00 % and 63.33 ± 2.89 % respectively. Structural morphology of the mycelia grown on the treated plate also showed morphological alteration compared to the control plate. Hence, Momordica charantia leaves extract may serves as a promising fungicides alternative to chemical use for controlling invasion of A. flavus on oyster mushroom.
  • Publication
    Thermal pyrolysis of empty fruit bunch (EFB) in a vertical fixed-bed reactor
    (IOP Publishing, 2020)
    Alina Rahayu Mohamed
    ;
    A N Awang
    ;
    Noor Hasyierah Mohd Salleh
    ;
    R Badlishah Ahmad
    In the production of crude palm oil, huge quantities of solid biomass waste is generated such as empty fruit bunch (EFB), palm fronds and palm–pressed fibre (PPF). This inevitably resulted in the environmental pollution due to its natural conversion to methane. In this study, thermal pyrolysis of EFB was conducted using a fixed bed reactor. The factors such as nitrogen gas flowrate and holding time that affect the distribution of pyrolysis product yields were being investigated by evaluating the percentage product yields. It was determined that at nitrogen gas flowrate of 300 cm3/min and 30 mins holding time, the maximum bio-oil yield of 46.20 % was attained with gas and char yield of 21.79 % and 32.01 % respectively. The existence of functional groups in bio-oil was analyzed by Fourier Transfrom Infra-Red (FTIR) spectroscopy. It was identified that the bio-oil has several functional groups such as hydroxyl (OH), ketone/aldehyde (C=O) and ester (O-C=O) groups. The dynamic viscoscity of bio-oil was analyzed by Brookfield viscometer. It showed that the viscosity of bio-oil decreased with increasing temperature from 25-50 °C.
  • Publication
    Botanical insecticide of chili and ginger extract on Nilaparvata lugens, brown planthopper
    (IOP Publishing Ltd., 2020)
    Noor Hasyierah Mohd Salleh
    ;
    Norhidayah Abd Aziz
    ;
    Alina Rahayu Mohamed
    ;
    Adilah Anuar
    ;
    I Nur Humaira
    Invasion of Nilaparvata lugens or brown planthopper (BPH) in paddy fields has led to the use of excessive chemical insecticides due to its effectiveness. However, excessive applications has contributed several negative effects on the environment, farmers as well as non-targeting organisms. As an alternative, a mixture of a botanical insecticide containing mixture of chili and ginger extracts have been studied. Three parameters were studied namely the extract concentration, time of exposure and temperature of exposure. The results showed that 90% of BPH mortality was found at 40% extract concentration with 72 hr duration time of exposure at optimal temperature 30 C. HPLC analysis proved the presence of capsaicin and gingerol at peaks of 4.502 min and 11.046 min respectively. From repellency analysis, the BPH showed selective repel action against the treated paddy. This is due to the pungent odor contributed from compound of gingerol, shogaol and capsaicin presented in the mixture. Meanwhile, contact toxicity studies have successfully give 100% of mortality of BPH. Microscopic analysis have shown BPH deformities was increased by the extract concentration.
      4  28
  • Publication
    Durability Studies of Solid Pellets from Torrefied Leucaena Leucocephala
    ( 2020-12-18)
    Kee Wei Chin
    ;
    Alina Rahayu Mohamed
    ;
    Zin A.M.
    ;
    Noor Hasyierah Mohd Salleh
    ;
    Aziz A.H.A.
    ;
    Mohd Qalani Che Kasim
    Torrefaction of Leucaena Leucocephala was performed in a fixed bed reactor at temperature of 300 C and 20 minutes holding time under inert environment. The torrefied Leucaena Leucocephala was pelletized with starch as the binder. Two parameters were investigated such as different ratio of starch addition to torrefied Leucaena Leucocephala pellets and the thickness of torrefied Leucaena Leucocephala pellets towards its durability. The ratios of starch addition to torrefied Leucaena Leucocephala pellets studied were 0, 5,10,15,20 and 25 wt%. Meanwhile, the studied thickness of torrefied Leucaena Leucocephala pellets were 0.3, 0.4, 0.5, 0.6 and 0.7 cm. It was observed that when the ratio of starch addition to torrefied Leucaena Leucocephala pellets was varied from 0-25 wt%, the durability increased steadily and the highest durability of 56.06% was achieved at 20 wt%. When the thickness of torrefied Leucaena Leucocephala pellets was increased from 0.3-0.7 cm, the highest durability of 93.18 % was achieved at 0.5 cm thickness. Scanning Electron Microscope (SEM) analysis was performed on the torrefied Leucaena Leucocephala pellets of 0 and 20 wt% ratio of starch addition. SEM images show the existence of some minor pores on the surface of torrefied Leucaena Leucocephala pellet at 250X and 1000X magnifications.
      6  43
  • Publication
    Torrefaction of Leucaena Leucocephala in a fixed-bed reactor
    (IOP Publishing, 2020)
    A N Awang
    ;
    Alina Rahayu Mohamed
    ;
    Noor Hasyierah Mohd Salleh
    Raw biomass contained low energy and high moisture content which contributed to its limitation as energy source. However, the biomass properties can be improved via torrefaction method. Torrefaction is a biomass pretreatment method that is performed between 200-300 C using slow heating rate in an inert condition. In this study, Leucaena Leucocephala (Leucaena) was torrefied in a fixed-bed reactor at 20 C/min from 200-300 C at holding times of 20 min. The changes in the elemental and chemical properties of Leucaena were studied using a few methods of analysis such as proximate, elemental analysis and fourier transform infrared (FTIR) spectrophotometer. When the torrefaction temperature was increased from 200 to 300 C, the oxygen to carbon (O/C) and hydrogen to carbon (H/C) ratio of torrefied Leucaena reduced significantly. From FTIR, the broad peak at wavenumber of approximately 3400 cm-1 due to the presence of OH group reduced in its intensity upon increasing torrefaction temperature from 200 to 300 C which indicated that the degree of hydrophobicity of torrefied Leucaena had improved.
      2  36