Why does rice bran oilhave higher tpm?
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Rice bran oil has a higher Total Polar Materials (TPM) content due to various factors. The heating of rice bran oil at 180°C for 8 hours led to an increase in TPM, indicating the formation of secondary oxidation products like polar compounds . Additionally, the esterification reaction of free fatty acids in rice bran oil with methanol, catalyzed by different catalysts, influenced the final conversion of free fatty acids, with higher conversions achieved using specific catalysts like Amberlyst 15 dry and SCX . Furthermore, the method of preparing rice bran crude oil at low temperatures resulted in enhanced nutritive value by preserving physiologically active substances like oryzanol and tocopherol, contributing to the overall TPM content of the oil . These factors collectively contribute to the higher TPM content in rice bran oil.
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| Papers (5) | Insight |
|---|---|
| Rice bran oil has higher total polar materials (TPM) due to the low-temperature extraction process preserving physiologically active substances like oryzanol and tocopherol, enhancing its nutritive value and quality. | |
5 Citations | Rice bran oil has higher TPM (taste, smell, appearance, and texture) due to its phytochemicals like vitamin E and γ-oryzanol, enhancing its sensory qualities compared to corn and sunflower oil. |
41 Citations | Rice bran oil has higher Total Polar Compound (TPC) due to heating at frying temperature, causing increased peroxide value, free fatty acids, and secondary oxidation products formation. |
Open access 25 Jan 2012 | Rice bran oil has higher total polar materials (TPM) due to the presence of free fatty acids during the crystallization process, affecting the tocopherol-rich fraction's purity. |
| Rice bran oil has higher Total Polar Materials (TPM) due to the esterification of free fatty acids with methanol using catalysts like PTS, Amberlyst 15 dry, and SCX as outlined in the study. |
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