In situ CHARACTERISATION OF PALM OLEIN CRYSTALLISATION BEHAVIOUR BY FOCUSED BEAM REFLECTANCE MEASUREMENT (FBRM)

Hishamuddin, Elina

doi:10.21894/jopr.2016.2801.06

Cited by 3 publications

(3 citation statements)

References 18 publications

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“…PGE additives helped enhance the crystallisation by inhibiting the growth of larger crystals which may contribute to the occurrence of olein entrainment. This was because the larger crystals tend to group together in clumps and occlude oleins (Hishamuddin and Omar, 2016). These findings also concur with the study on effects of PGE on palm oil fractionation done by Kuriyama et al (2011).…”

Section: Effects Of Pge On Crystal Nucleationsupporting

confidence: 91%

“…However, the sizes of increased crystal amounts observed in this present study were slightly different from the crystal sizes suggested by Normah et al (2013) and Saw et al (2017) due to different process where the previous studies were done in palm oil crystallisation which contained more saturated fatty acid with higher melting points (tripalmitoyl-glycerol, PPP). The present study on olein crystallisation contained mainly POP which lowers the melting points (Hishamuddin and Omar, 2016). Figure 6 shows the IV of the products after the fractionation of RBDPOo viz.…”

Section: Effects Of Pge On Crystal Nucleationmentioning

confidence: 68%

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The Effects of Polyglycerol Esters on Palm Olein Fractionation

Hao¹

2019

JOPR

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This study was undertaken to investigate the effects of adding 0.1% (w/w)-0.9% (w/w) polyglycerol esters (PGE) on palm olein fractionation based on crystal nucleation, crystal growth and product quality aspects. Palm olein (IV 56) with PGE additives was subjected to crystallisation at a temperature of 13°C for 335 min. The crystal nucleation and its growth were monitored using focused beam reflectance measurement (FBRM) technique, during which the in-line changes of crystal size distribution during the process were analysed. The fractionated products were analysed for their iodine value (IV) and triacylglycerol (TAG) composition. The FBRM results showed that the PGE promoted crystal nucleation coupled with reduced formation of undesired large crystals during the crystallisation stage. The product analysis also showed that the PGE discouraged the formation of olein entrainment in the solid fraction but promoted the formation of 1, 3-dipalmitoyl-2-oleoyl-glycerol (POP) content in the solid fraction. In addition, PGE also slowed the formation of 1-palmitoyl-2,3-dioleoy-glycerol (POO). The optimal dosage that offered best performance was 0.3% (w/w) PGE which gave the most medium sized crystals and best palm mid fraction product with lowest IV and highest content of POP. These results implied that PGE is a nucleation enhancing and crystal growth retarding additive in palm olein crystallisation at 0.3% (w/w) dosage.

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Section: Effects Of Pge On Crystal Nucleationsupporting

confidence: 91%

Section: Effects Of Pge On Crystal Nucleationmentioning

confidence: 68%

The Effects of Polyglycerol Esters on Palm Olein Fractionation

Hao¹

2019

JOPR

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“…In this study, the chord length distribution of palm oil slurries at the end of isothermal crystallisation before final filtration was measured using FBRM as shown in Figure 1. FBRM is an effective technique in monitoring particle characteristics within different physical or chemical processes in agitated crystallisation system which ensures real time in situ monitoring of the particle size in the system (Hishamuddin et al, 2011;2016). The data on the final crystal size distribution of the palm oil slurry in the crystalliser allows us to understand the actual situation in the system before the filtration step which can be related to the fractionation process.…”

Section: Effect Of Pgemix-8 On Chord Length Distributionmentioning

confidence: 99%

Influence of Polyglycerol Ester Additive on Palm Oil Fractionation in Relation to the Crystal Size Distribution

H¹

2020

JOPR

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The effect of polyglycerol ester (PGEmix-8) additive on palm oil fractionation was studied at isothermal temperature of 24°C. Sampling was conducted at 20 min intervals to determine the solid fat content (SFC) of the slurries and the yield and compositions of the olein and stearin fractions. The peak of crystal size distribution was reduced from 100 μm to an average of 70 μm when 0.1% (w/w) to 0.5% (w/w) of PGEmix-8 were added in palm oil. The peak value was further reduced to 35 μm when 0.7% (w/w) additive was used. In spite of this, the SFC of the slurries remained unchanged during the isothermal crystallisation. These results show that PGEmix-8 had influenced the crystal size distribution without affecting the volume of the crystals formed. The fractionation results showed that olein yield increased about 3% to 6% but the triacylglycerol composition of the oleins were comparable with the control. An increase of saturation and a reduction of monounsaturation content in the stearin fractions were observed with increasing PGEmix-8 addition. These results implied that the increase in olein yield was due to less olein entrainment as a result of the more homogeneous and smaller crystals of the palm oil slurries.

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Effect of polyglycerol esters additive on palm oil crystallization using focused beam reflectance measurement and differential scanning calorimetry

et al. 2017

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The effect of 0.1-0.7% (w/w) of polyglycerol esters (PGEmix-8) on palm oil crystallization was studied using focused beam reflectance measurement (FBRM) to analyze the in-line changes of crystal size distribution during the crystallization. FBRM results show that 0.1-0.5% (w/w) of PGEmix-8 did not significantly affect nucleation but slightly retarded crystal growth. The use of 0.7% (w/w) additive showed greater heterogeneous nucleation compared to those with lower dosages of additive. Crystal growth was also greatly reduced when using 0.7% (w/w) dosage. The morphological study indicated that the palm oil crystals were smaller and more even in size than when more additive was added. Isothermal crystallization studies using differential scanning calorimetry (DSC) showed increased inhibitory effects on palm oil crystal growth with increasing concentration of PGEmix-8. These results imply that PGEmix-8 is a nucleation enhancing and crystal growth retarding additive in palm oil crystallization at 0.7% (w/w) dosage.

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In situ CHARACTERISATION OF PALM OLEIN CRYSTALLISATION BEHAVIOUR BY FOCUSED BEAM REFLECTANCE MEASUREMENT (FBRM)

Abstract: ABSTRACT

Cited by 3 publications

References 18 publications

The Effects of Polyglycerol Esters on Palm Olein Fractionation

The Effects of Polyglycerol Esters on Palm Olein Fractionation

Influence of Polyglycerol Ester Additive on Palm Oil Fractionation in Relation to the Crystal Size Distribution

Effect of polyglycerol esters additive on palm oil crystallization using focused beam reflectance measurement and differential scanning calorimetry

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