Phospholipid‐ phospholipid interaction in soybean oil

Kanamoto, Ryuhei; Wada, Yoshihiro; Miyajima, Goh; Kito, Makoto

doi:10.1007/bf02679324

Cited by 56 publications

(38 citation statements)

References 15 publications

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“…It was observed that there was a significant reduction in the phospholipid content to 261.5 ppm from 612.66 ppm with 5 w/w OPA p 0.05 . However, higher strength of acid beyond 5 OPA, did not show a significant reduction in the phospholipid content p 0.05 and tends to make the oil darker in colour by decomposing non-hydratable phospholipids to form brown sludge 28 . Hence, 5 OPA was chosen for degumming of crude sardine oil.…”

Section: Degummingmentioning

confidence: 83%

A New Strategy to Refine Crude Indian Sardine Oil

2017

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Section: Degummingmentioning

confidence: 83%

A New Strategy to Refine Crude Indian Sardine Oil

2017

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“…The quality and quantity of PC in the lecithin primarily decide its applications. Among the various phospholipids present in the vegetable oils, PC has the lowest critical micelle concentration (CMC) (14) and hence exhibits the highest surfactant activity. Therefore, the HOSF oil model solution containing the principal phospholipid (PC) could be considered close to the real system.…”

Section: Resultsmentioning

confidence: 99%

Rejection of carotenoids in oil systems by a nonporous polymeric composite membrane

Subramanian

Nabetani

Nakajima

et al. 2001

J Americ Oil Chem Soc

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Earlier studies by the authors on crude vegetable oils showed that color compounds are reduced to the extent of 74-80% during membrane processing. In the present study, attempts were made to understand the rejection mechanism of carotenoids using real and model oil systems. In case of model systems consisting of refined high-oleic sunflower (HOSF) oil, lecithin and β-carotene, the rejection of carotenes was low (11-20%). This could be explained based on the differences between the model and real systems as well as on the solution-diffusion mechanism controlling the material transport across the membrane. This study revealed that β-carotene did not have affinity for the phospholipid reverse micelles present in the oil. Xanthophylls, the major carotenoids present in the crude soybean oil, were rejected to the extent of 60% in the model system (HOSF oil and lutein). High-performance liquid chromatographic analysis of crude oil revealed that there were few other xanthophylls, which are more polar than lutein. These unidentified xanthophylls would be rejected to a much greater extent by the hydrophobic membrane. The extent of color reduction would depend on the actual composition of xanthophylls present in the crude oil and their relative polarity.Paper no. J9845 in JAOCS 78, 803-807 (August 2001).

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“…In that instance, the Zwitterion would be removed on water degumming leaving the molecule without charges in the oil. Further Zwitterions would then be formed so that on subsequent water degumming, further PE would be removed (Kanamoto et al, 1981). However, this is just speculation on my part.…”

Section: Phosphatide Behaviour During Oil Milling Degumming and Neutmentioning

confidence: 97%

Thanks to literature and fellow scientists

Dijkstra¹

2010

OCL

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Formal training has the disadvantage that trainees may simply accept what they are taught without questioning it, unlike the autodidact who can only learn by asking questions all the time. Sometimes, he will not get an answer and that need not be because the question is stupid, but may be because his peers are used to there being no satisfactory answer and have simply accepted the conventional mythology without further question. So it is about time to ask some assorted questions and where possible, suggest how to find an answer: 1) Why does the composition of the solvent used to extract oil from oilseeds affect the amount of oil being extracted and its phosphatide content? 2) Why does a heat treatment (Alcon, Exergy, expander) increase the phosphatide content of the crude oil and decrease its non-hydratable phosphatide (NHP) content? 3) Why does water degumming of crude oil remove relatively more magnesium than calcium? 4) What is the mechanism of phosphatide removal by silica hydrogel and why is it enhanced by simultaneous soap removal? 5) What is the mechanism of NHP-removal during alkali neutralisation? 6) Could it be that the Long Mix neutralisation process as used in the US leads to insufficient removal of the pro-oxidants copper and iron and that this explains why oil tends to less stable in the US than in Europe, especially when it contains linolenic acid? 7) Could different deodorisation conditions explain this geographically determined anomaly? 8) What happens during flavour reversion? 9) Why is walnut oil more stable in the nut than in the bottle? 10) How much oil is lost by saponification or hydrolysis during refining? 11) What is the mechanism of colour fixation? 12) Does the activity of interesterification catalysts depend on their counter cation? 13) What is the chemical nature of the colour formed on interesterification catalyst activation? 14) What is crystal memory? Does it exist? However, we should not forget the Dutch proverb that: "One fool can ask more questions than ten wise men can answer." On the other hand, exposing myths is half the fun and asking the right question often provides half the answer.

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Phospholipid‐ phospholipid interaction in soybean oil

Cited by 56 publications

References 15 publications

A New Strategy to Refine Crude Indian Sardine Oil

A New Strategy to Refine Crude Indian Sardine Oil

Rejection of carotenoids in oil systems by a nonporous polymeric composite membrane

Thanks to literature and fellow scientists

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