In the present work, the physicochemical properties namely fatty acid composition (FAC), iodine value (IV), acylglycerol content and thermal profiles of palm-based diacylglycerol (PDAG) in blend with soybean oil (SBO) at different concentrations (0-100 wt %) were evaluated. The Fourier-transform infrared spectroscopy (FTIR) spectra were determined at mid-infrared region to assign the functional groups. SBO exhibited the same absorption bands as PDAG except at wavelength of 1711, 1450, 1359, 850 and 779 cm-1. This phenomenon indicated that the absorption frequency of the binary mixtures greatly depended on the composition of oil samples. IV of the oil blends was found to decrease from 131.09 ± 0.88 I2/100 g to 51.55 ± 0.60 I2/100 g with increasing PDAG concentrations due to the reduced degree of unsaturation. Generally, binary blends with an increasing PDAG concentration showed a decrease in linoleic acid (C18:2) as well as increase in oleic acid (C18:1) and palmitic acid (C16:0) contents. The DAG content for all the blends increased from 5.15 ± 1.40% to 87.80 ± 0.33% and TAG content decreased from 94.85 ± 1.40% to 12.20 ± 0.33% in tandem with increasing PDAG content. Incorporation of PDAG into SBO significantly affected the crystallisation and melting profiles of SBO.
The primary objectives of this study were to process corncob into corncob powder (CCP)
and to apply CCP in the formulation of instant cereal beverage (ICB) in order to produce
high fibre ICB, and to investigate the physicochemical and sensory properties of the
corncob-based instant cereal beverage. Corncobs were sourced and washed thoroughly
before drying and grinding into CCP. CCP was then imparted into ICB formulation in
three different ratios (10, 20 and 30% w/w) to partially substitute corn flour in the
formulation. All four ICB samples including the commercial counterpart were analysed
for their physicochemical and sensory properties. The incorporation of CCP has affected
the viscosity, colour and sensory attributes significantly of the produced ICB. Higher
contents of CCP in the formulation was found to be responsible for less viscous and
browner effect compared to the commercial ICB samples. Formulation of ICB
incorporated with 30% w/w CCP had the highest mean scores (6.00, p
Fibre-rich manure derived from grass-fed cattle showed significantly higher intrinsic sorption efficiency on Cr(VI) solution as compared to corncob, sawdust and cogon grass. This observation could be attributed to the ligneous nature and rough surface morphology of the cattle manure. Four-factor, three-level, face-centred composite design (FCCD) suggested the process was greatly affected by initial pH of the solution, contact time and sorbent dosage (p50% adsorption efficiency. It is predicted that both physisorption and chemisorption are involved in the sorption process.