Degradation study of Bromelain-extracted virgin coconut oil based on peroxide and fatty acid formation under the elevated temperatures
This research seeks to ascertain the kinetic parameters of VCO degradation based on the formation of peroxide and free fatty acids and to evaluate the shelf life of bromelain-extracted VCO at various temperatures. The kinetic parameters and shelf life of VCO were determined by measuring the valu...
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| Main Authors: | , , , , , , , |
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| Format: | Proceeding Paper |
| Language: | English |
| Published: |
EDP Sciences
2024
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/116458/1/116485_Degradation%20Study%20of%20Bromelain-extracted.pdf http://irep.iium.edu.my/116458/ https://www.bio-conferences.org/articles/bioconf/abs/2024/63/bioconf_sage-grace2024_05003/bioconf_sage-grace2024_05003.html https://doi.org/10.1051/bioconf/202414405003 |
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| Summary: | This research seeks to ascertain the kinetic parameters of VCO
degradation based on the formation of peroxide and free fatty acids and to
evaluate the shelf life of bromelain-extracted VCO at various temperatures.
The kinetic parameters and shelf life of VCO were determined by
measuring the value of peroxides and free fatty acids (FFA) concentration
at temperatures of 50 ºC to 200 ºC. The heating was performed in a 1 L
conical flask immersed in the paraffin bath. Samples were collected for
each temperature at 0 to 60 minutes. The rate constant of peroxide and
FFA formation was determined by regression analysis using Microsoft
Excel, based on the plot of sampling time and value of peroxide and FFA
concentration. The rate constant of peroxide formation escalated from
0.0114 to 0.1419 mEq Kg-1 min-1 when the VCO was heated at 50 ºC to
200 ºC. Meanwhile, the rate constant of FFA formation rose from 0.0188
to 0.0393 % min-1 when subjected to heating at 50 ºC to 200 ºC. Based on
the shelf-life prediction established by Indonesian National Standards or
the Asian and Pacific Coconut Community, the shelf-life of bromelain extracted VCO varies from 10 to 3 hours at temperatures ranging from 2 ºC
to 50 ºC. It was determined that elevating the temperature reduced the
shelf-life of bromelain-extracted VCO. These findings suggest that
temperature is crucial for the stability of bromelain-extracted VCO. |
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