Premium
Effect of repeated heating on thermal behavior of crude palm oil
Author(s) -
Haryati T.,
Che Man Y. B.,
Swe P. Z.
Publication year - 1997
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/s11746-997-0096-y
Subject(s) - palm stearin , differential scanning calorimetry , palm oil , materials science , overheating (electricity) , fractionation , thermal , yield (engineering) , refinery , chemical engineering , chemistry , composite material , chromatography , thermodynamics , organic chemistry , food science , physics , quantum mechanics , engineering
Thermal behavior of crude palm oil (CPO) is important to determine the optimal fractionation process and product yield. In this study, the effects of repeated heating on thermal behavior of CPO were examined by differential scanning calorimetry. CPO was heated at 80°C for 5 min, and heating was repeated five times to simulate the common conditions experienced by an oil before reaching the refinery. The result revealed that the thermal behavior of CPO changed after heating. The change, however, occurred only in the behavior of the high‐melting stearin peak but not in the low‐melting olein peak. Overheating split the stearin peak at 17.30°C to two peaks at 18.88 and 17.30°C and formed a new peak at 11.28°C. Apparently, a new substance has been synthesized.