Effect of Coolant Temperature on Progressive Freeze Concentration of Refined, Bleached and Deodorised Palm Oil

Jusoh, Mazura; Yahya, Noor Yahida; Hamid, Farah Hanim Ab; Safiei, Nor Zanariah

doi:10.11113/jt.v69.3168

Cited by 3 publications

(2 citation statements)

References 14 publications

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“…In addition, the rate of ice crystals or solid growth is controlled by coolant temperature (Amran and Jusoh 2016 ; Jusoh et al 2014a ). When the temperature is close to the crystallization point, the likelihood of FAME being trapped is higher within the solid layer formed by glycerol and other impurities.…”

Section: Resultsmentioning

confidence: 99%

Parametric study of glycerol and contaminants removal from biodiesel through solvent-aided crystallization

Ahmad

Letchumanan

Samsuri

et al. 2021

Bioresour. Bioprocess.

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At present, biodiesel is known as an alternative fuel globally. It is also known that the purification of biodiesel before consumption is mandatory to comply with international standards. Commonly, purification using water washing generates a massive amount of wastewater with a high content of organic compounds that can harm the environment. Therefore, this study applied and tested a waterless method, i.e., the solvent-aided crystallization (SAC), to remove glycerol and other traces of impurities in the crude biodiesel. The parameters of coolant temperature, crystallization time, and stirring rate on the SAC system were investigated. It was discovered that with 14 °C coolant temperature, 300 RPM and higher cooling time result in the highest percentage of FAME up to 99.54%, which indicates that contaminants' presence is limited in the purified biodiesel. The use of 1-butanol as the solvent for crystallization process remarkably enhanced the separation and improved the higher biodiesel quality.

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Section: Resultsmentioning

confidence: 99%

Parametric study of glycerol and contaminants removal from biodiesel through solvent-aided crystallization

Ahmad

Letchumanan

Samsuri

et al. 2021

Bioresour. Bioprocess.

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show abstract

“…Apart from that, Ding et al (2019) found that in SFC, ice crystals are suspended in a bulk solution and developed, creating a two-phase fluid of ice and mother liquor, also known as ice slurry. In general, a conventional SFC consists of three phases which are an ice nucleator, a re-crystalliser, and an ice crystal separator (Jusoh et al, 2014a).…”

Section: Suspension Freeze Concentrationmentioning

confidence: 99%

Separation methods in the food industry: An exploration of reverse osmosis, evaporation and freeze concentration applications

Abu Bakar,

Ab Hamid

2023

MJCET

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Separation method is broadly used in various industries, mainly in the food industry. Some of the applications include retaining the nutrients and concentrating fruit juices, liquid foods, and milk products. Fundamentally, the concentrated liquid product is achieved by these separation methods. Technology advances daily, impacting food quality characteristics such as flavour, colour, and texture. Production and commercialisation processes are key considerations, from conventional to modern approaches. Hence, this study aims to review the various types of separation methods with their application in food industries which are evaporation, reverse osmosis, and freeze concentration that is separated into two: suspension freeze concentration and progressive freeze concentration

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Retention of Bioactive Compound in the Concentration of Centella Asiatica Extract through Progressive Freezing

Amran

Rafee²,

Samsuri

2020

IOP Conf. Ser.: Mater. Sci. Eng.

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Phenolics and flavonoids were the two major bioactive compounds in C.asiatica that contributes to its therapeutic values. However, concentration by evaporation resulted in denaturation of the compounds due to their heat sensitivity nature. Therefore, this paper aims to introduce progressive freezing (PF) process as a new concentration method for the C.asiatica. PF separates two liquid compounds based on their freezing point difference. One with a higher freezing point would solidify first while another one would remain as a liquid. Low temperature involved in this process could minimize the heat abuse to the volatile compounds of C.asiatica. In this study, maceration was done to get the C.asiatica extract by preparing 1:80 ratio of solute to solvent and stirred at 1200 rpm for 24 hours. On the other hand, the PF was conducted in a cylindrical stirred crystallizer. For PF process, two operating parameters which are coolant temperature ranging from −6°C to −12°C, and stirring rate ranging from 100 rpm to 250 rpm have been tested for their effects towards the process performance. Two determinant parameters which were effective partition constant, K and retention efficiency (Reff) of bioactive compounds (flavonoid and phenolic) in the concentrated solution had been used to portray the process efficiency. On completing the experimental work, it was found that lower coolant temperature, and a moderate stirring rate resulted in the higher concentration efficiency of the bioactive compounds. The highest concentration efficiency of 69% and the smallest effective partition constant (K) of 0.51 were achieved at −10°C, 150 rpm and 30 minutes.

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Effect of Coolant Temperature on Progressive Freeze Concentration of Refined, Bleached and Deodorised Palm Oil

Cited by 3 publications

References 14 publications

Parametric study of glycerol and contaminants removal from biodiesel through solvent-aided crystallization

Parametric study of glycerol and contaminants removal from biodiesel through solvent-aided crystallization

Separation methods in the food industry: An exploration of reverse osmosis, evaporation and freeze concentration applications

Retention of Bioactive Compound in the Concentration of Centella Asiatica Extract through Progressive Freezing

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